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openssl/ssl/ssl_locl.h
raja-ashok 84d4b9e31d API to get negotiated key exchange algorithm in TLS1.3 
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9323)
2019-08-06 12:04:52 +01:00

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/*
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
* Copyright 2005 Nokia. All rights reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_SSL_LOCL_H
# define HEADER_SSL_LOCL_H
# include "e_os.h" /* struct timeval for DTLS */
# include <stdlib.h>
# include <time.h>
# include <string.h>
# include <errno.h>
# include <openssl/buffer.h>
# include <openssl/comp.h>
# include <openssl/bio.h>
# include <openssl/rsa.h>
# include <openssl/dsa.h>
# include <openssl/err.h>
# include <openssl/ssl.h>
# include <openssl/async.h>
# include <openssl/symhacks.h>
# include <openssl/ct.h>
# include "record/record.h"
# include "statem/statem.h"
# include "internal/packet.h"
# include "internal/dane.h"
# include "internal/refcount.h"
# include "internal/tsan_assist.h"
# include "internal/bio.h"
# ifdef OPENSSL_BUILD_SHLIBSSL
# undef OPENSSL_EXTERN
# define OPENSSL_EXTERN OPENSSL_EXPORT
# endif
# define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
/* NOTE - c is not incremented as per c2l */
# define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24; \
case 7: l2|=((unsigned long)(*(--(c))))<<16; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24; \
case 3: l1|=((unsigned long)(*(--(c))))<<16; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
l|=((unsigned long)(*((c)++)))<<16, \
l|=((unsigned long)(*((c)++)))<< 8, \
l|=((unsigned long)(*((c)++))))
# define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
l|=((uint64_t)(*((c)++)))<<48, \
l|=((uint64_t)(*((c)++)))<<40, \
l|=((uint64_t)(*((c)++)))<<32, \
l|=((uint64_t)(*((c)++)))<<24, \
l|=((uint64_t)(*((c)++)))<<16, \
l|=((uint64_t)(*((c)++)))<< 8, \
l|=((uint64_t)(*((c)++))))
# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
*((c)++)=(unsigned char)(((l)>>48)&0xff), \
*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
/* NOTE - c is not incremented as per l2c */
# define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
# define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
(((unsigned int)((c)[1])) )),(c)+=2)
# define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
(c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
# define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
(((unsigned long)((c)[1]))<< 8)| \
(((unsigned long)((c)[2])) )),(c)+=3)
# define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
(c)[1]=(unsigned char)(((l)>> 8)&0xff), \
(c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
# define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
# define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
/*
* DTLS version numbers are strange because they're inverted. Except for
* DTLS1_BAD_VER, which should be considered "lower" than the rest.
*/
# define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
# define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
# define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
# define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
# define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
/*
* Define the Bitmasks for SSL_CIPHER.algorithms.
* This bits are used packed as dense as possible. If new methods/ciphers
* etc will be added, the bits a likely to change, so this information
* is for internal library use only, even though SSL_CIPHER.algorithms
* can be publicly accessed.
* Use the according functions for cipher management instead.
*
* The bit mask handling in the selection and sorting scheme in
* ssl_create_cipher_list() has only limited capabilities, reflecting
* that the different entities within are mutually exclusive:
* ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
*/
/* Bits for algorithm_mkey (key exchange algorithm) */
/* RSA key exchange */
# define SSL_kRSA 0x00000001U
/* tmp DH key no DH cert */
# define SSL_kDHE 0x00000002U
/* synonym */
# define SSL_kEDH SSL_kDHE
/* ephemeral ECDH */
# define SSL_kECDHE 0x00000004U
/* synonym */
# define SSL_kEECDH SSL_kECDHE
/* PSK */
# define SSL_kPSK 0x00000008U
/* GOST key exchange */
# define SSL_kGOST 0x00000010U
/* SRP */
# define SSL_kSRP 0x00000020U
# define SSL_kRSAPSK 0x00000040U
# define SSL_kECDHEPSK 0x00000080U
# define SSL_kDHEPSK 0x00000100U
/* all PSK */
# define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
/* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
# define SSL_kANY 0x00000000U
/* Bits for algorithm_auth (server authentication) */
/* RSA auth */
# define SSL_aRSA 0x00000001U
/* DSS auth */
# define SSL_aDSS 0x00000002U
/* no auth (i.e. use ADH or AECDH) */
# define SSL_aNULL 0x00000004U
/* ECDSA auth*/
# define SSL_aECDSA 0x00000008U
/* PSK auth */
# define SSL_aPSK 0x00000010U
/* GOST R 34.10-2001 signature auth */
# define SSL_aGOST01 0x00000020U
/* SRP auth */
# define SSL_aSRP 0x00000040U
/* GOST R 34.10-2012 signature auth */
# define SSL_aGOST12 0x00000080U
/* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
# define SSL_aANY 0x00000000U
/* All bits requiring a certificate */
#define SSL_aCERT \
(SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
/* Bits for algorithm_enc (symmetric encryption) */
# define SSL_DES 0x00000001U
# define SSL_3DES 0x00000002U
# define SSL_RC4 0x00000004U
# define SSL_RC2 0x00000008U
# define SSL_IDEA 0x00000010U
# define SSL_eNULL 0x00000020U
# define SSL_AES128 0x00000040U
# define SSL_AES256 0x00000080U
# define SSL_CAMELLIA128 0x00000100U
# define SSL_CAMELLIA256 0x00000200U
# define SSL_eGOST2814789CNT 0x00000400U
# define SSL_SEED 0x00000800U
# define SSL_AES128GCM 0x00001000U
# define SSL_AES256GCM 0x00002000U
# define SSL_AES128CCM 0x00004000U
# define SSL_AES256CCM 0x00008000U
# define SSL_AES128CCM8 0x00010000U
# define SSL_AES256CCM8 0x00020000U
# define SSL_eGOST2814789CNT12 0x00040000U
# define SSL_CHACHA20POLY1305 0x00080000U
# define SSL_ARIA128GCM 0x00100000U
# define SSL_ARIA256GCM 0x00200000U
# define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
# define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
# define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
# define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
# define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
# define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
# define SSL_ARIA (SSL_ARIAGCM)
/* Bits for algorithm_mac (symmetric authentication) */
# define SSL_MD5 0x00000001U
# define SSL_SHA1 0x00000002U
# define SSL_GOST94 0x00000004U
# define SSL_GOST89MAC 0x00000008U
# define SSL_SHA256 0x00000010U
# define SSL_SHA384 0x00000020U
/* Not a real MAC, just an indication it is part of cipher */
# define SSL_AEAD 0x00000040U
# define SSL_GOST12_256 0x00000080U
# define SSL_GOST89MAC12 0x00000100U
# define SSL_GOST12_512 0x00000200U
/*
* When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
* sure to update this constant too
*/
# define SSL_MD_MD5_IDX 0
# define SSL_MD_SHA1_IDX 1
# define SSL_MD_GOST94_IDX 2
# define SSL_MD_GOST89MAC_IDX 3
# define SSL_MD_SHA256_IDX 4
# define SSL_MD_SHA384_IDX 5
# define SSL_MD_GOST12_256_IDX 6
# define SSL_MD_GOST89MAC12_IDX 7
# define SSL_MD_GOST12_512_IDX 8
# define SSL_MD_MD5_SHA1_IDX 9
# define SSL_MD_SHA224_IDX 10
# define SSL_MD_SHA512_IDX 11
# define SSL_MAX_DIGEST 12
/* Bits for algorithm2 (handshake digests and other extra flags) */
/* Bits 0-7 are handshake MAC */
# define SSL_HANDSHAKE_MAC_MASK 0xFF
# define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
# define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
# define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
# define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
# define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
# define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
# define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
/* Bits 8-15 bits are PRF */
# define TLS1_PRF_DGST_SHIFT 8
# define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
# define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
/*
* Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
* goes into algorithm2)
*/
# define TLS1_STREAM_MAC 0x10000
# define SSL_STRONG_MASK 0x0000001FU
# define SSL_DEFAULT_MASK 0X00000020U
# define SSL_STRONG_NONE 0x00000001U
# define SSL_LOW 0x00000002U
# define SSL_MEDIUM 0x00000004U
# define SSL_HIGH 0x00000008U
# define SSL_FIPS 0x00000010U
# define SSL_NOT_DEFAULT 0x00000020U
/* we have used 0000003f - 26 bits left to go */
/* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
# define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
/* Check if an SSL structure is using DTLS */
# define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
/* Check if we are using TLSv1.3 */
# define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
&& (s)->method->version >= TLS1_3_VERSION \
&& (s)->method->version != TLS_ANY_VERSION)
# define SSL_TREAT_AS_TLS13(s) \
(SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
|| (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
|| (s)->early_data_state == SSL_EARLY_DATA_WRITING \
|| (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
|| (s)->hello_retry_request == SSL_HRR_PENDING)
# define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3.tmp.finish_md_len == 0 \
|| (s)->s3.tmp.peer_finish_md_len == 0)
/* See if we need explicit IV */
# define SSL_USE_EXPLICIT_IV(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
/*
* See if we use signature algorithms extension and signature algorithm
* before signatures.
*/
# define SSL_USE_SIGALGS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
/*
* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
* apply to others in future.
*/
# define SSL_USE_TLS1_2_CIPHERS(s) \
(s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
/*
* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
* flags because it may not be set to correct version yet.
*/
# define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
(SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
/*
* Determine if a client should send signature algorithms extension:
* as with TLS1.2 cipher we can't rely on method flags.
*/
# define SSL_CLIENT_USE_SIGALGS(s) \
SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
# define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
(((value) >= TLSEXT_max_fragment_length_512) && \
((value) <= TLSEXT_max_fragment_length_4096))
# define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
# define GET_MAX_FRAGMENT_LENGTH(session) \
(512U << (session->ext.max_fragment_len_mode - 1))
# define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
# define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
/* Mostly for SSLv3 */
# define SSL_PKEY_RSA 0
# define SSL_PKEY_RSA_PSS_SIGN 1
# define SSL_PKEY_DSA_SIGN 2
# define SSL_PKEY_ECC 3
# define SSL_PKEY_GOST01 4
# define SSL_PKEY_GOST12_256 5
# define SSL_PKEY_GOST12_512 6
# define SSL_PKEY_ED25519 7
# define SSL_PKEY_ED448 8
# define SSL_PKEY_NUM 9
/*-
* SSL_kRSA <- RSA_ENC
* SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
* SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
* SSL_aRSA <- RSA_ENC | RSA_SIGN
* SSL_aDSS <- DSA_SIGN
*/
/*-
#define CERT_INVALID 0
#define CERT_PUBLIC_KEY 1
#define CERT_PRIVATE_KEY 2
*/
/* Post-Handshake Authentication state */
typedef enum {
SSL_PHA_NONE = 0,
SSL_PHA_EXT_SENT, /* client-side only: extension sent */
SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
SSL_PHA_REQUESTED /* request received by client, or sent by server */
} SSL_PHA_STATE;
/* CipherSuite length. SSLv3 and all TLS versions. */
# define TLS_CIPHER_LEN 2
/* used to hold info on the particular ciphers used */
struct ssl_cipher_st {
uint32_t valid;
const char *name; /* text name */
const char *stdname; /* RFC name */
uint32_t id; /* id, 4 bytes, first is version */
/*
* changed in 1.0.0: these four used to be portions of a single value
* 'algorithms'
*/
uint32_t algorithm_mkey; /* key exchange algorithm */
uint32_t algorithm_auth; /* server authentication */
uint32_t algorithm_enc; /* symmetric encryption */
uint32_t algorithm_mac; /* symmetric authentication */
int min_tls; /* minimum SSL/TLS protocol version */
int max_tls; /* maximum SSL/TLS protocol version */
int min_dtls; /* minimum DTLS protocol version */
int max_dtls; /* maximum DTLS protocol version */
uint32_t algo_strength; /* strength and export flags */
uint32_t algorithm2; /* Extra flags */
int32_t strength_bits; /* Number of bits really used */
uint32_t alg_bits; /* Number of bits for algorithm */
};
/* Used to hold SSL/TLS functions */
struct ssl_method_st {
int version;
unsigned flags;
unsigned long mask;
int (*ssl_new) (SSL *s);
int (*ssl_clear) (SSL *s);
void (*ssl_free) (SSL *s);
int (*ssl_accept) (SSL *s);
int (*ssl_connect) (SSL *s);
int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
int (*ssl_shutdown) (SSL *s);
int (*ssl_renegotiate) (SSL *s);
int (*ssl_renegotiate_check) (SSL *s, int);
int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
unsigned char *buf, size_t len, int peek,
size_t *readbytes);
int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
size_t *written);
int (*ssl_dispatch_alert) (SSL *s);
long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
size_t *len);
size_t (*ssl_pending) (const SSL *s);
int (*num_ciphers) (void);
const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
long (*get_timeout) (void);
const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
int (*ssl_version) (void);
long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
};
/*
* Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
* consistency, even in the event of OPENSSL_NO_PSK being defined.
*/
# define TLS13_MAX_RESUMPTION_PSK_LENGTH 256
/*-
* Lets make this into an ASN.1 type structure as follows
* SSL_SESSION_ID ::= SEQUENCE {
* version INTEGER, -- structure version number
* SSLversion INTEGER, -- SSL version number
* Cipher OCTET STRING, -- the 3 byte cipher ID
* Session_ID OCTET STRING, -- the Session ID
* Master_key OCTET STRING, -- the master key
* Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
* Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
* Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
* Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
* Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
* Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
* HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
* PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
* PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
* Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
* Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
* Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
* SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
* flags [ 13 ] EXPLICIT INTEGER -- optional flags
* }
* Look in ssl/ssl_asn1.c for more details
* I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
*/
struct ssl_session_st {
int ssl_version; /* what ssl version session info is being kept
* in here? */
size_t master_key_length;
/* TLSv1.3 early_secret used for external PSKs */
unsigned char early_secret[EVP_MAX_MD_SIZE];
/*
* For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
* PSK
*/
unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
/* session_id - valid? */
size_t session_id_length;
unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
/*
* this is used to determine whether the session is being reused in the
* appropriate context. It is up to the application to set this, via
* SSL_new
*/
size_t sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
# ifndef OPENSSL_NO_PSK
char *psk_identity_hint;
char *psk_identity;
# endif
/*
* Used to indicate that session resumption is not allowed. Applications
* can also set this bit for a new session via not_resumable_session_cb
* to disable session caching and tickets.
*/
int not_resumable;
/* This is the cert and type for the other end. */
X509 *peer;
int peer_type;
/* Certificate chain peer sent. */
STACK_OF(X509) *peer_chain;
/*
* when app_verify_callback accepts a session where the peer's
* certificate is not ok, we must remember the error for session reuse:
*/
long verify_result; /* only for servers */
CRYPTO_REF_COUNT references;
long timeout;
long time;
unsigned int compress_meth; /* Need to lookup the method */
const SSL_CIPHER *cipher;
unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
* load the 'cipher' structure */
CRYPTO_EX_DATA ex_data; /* application specific data */
/*
* These are used to make removal of session-ids more efficient and to
* implement a maximum cache size.
*/
struct ssl_session_st *prev, *next;
struct {
char *hostname;
/* RFC4507 info */
unsigned char *tick; /* Session ticket */
size_t ticklen; /* Session ticket length */
/* Session lifetime hint in seconds */
unsigned long tick_lifetime_hint;
uint32_t tick_age_add;
/* Max number of bytes that can be sent as early data */
uint32_t max_early_data;
/* The ALPN protocol selected for this session */
unsigned char *alpn_selected;
size_t alpn_selected_len;
/*
* Maximum Fragment Length as per RFC 4366.
* If this value does not contain RFC 4366 allowed values (1-4) then
* either the Maximum Fragment Length Negotiation failed or was not
* performed at all.
*/
uint8_t max_fragment_len_mode;
} ext;
# ifndef OPENSSL_NO_SRP
char *srp_username;
# endif
unsigned char *ticket_appdata;
size_t ticket_appdata_len;
uint32_t flags;
CRYPTO_RWLOCK *lock;
};
/* Extended master secret support */
# define SSL_SESS_FLAG_EXTMS 0x1
# ifndef OPENSSL_NO_SRP
typedef struct srp_ctx_st {
/* param for all the callbacks */
void *SRP_cb_arg;
/* set client Hello login callback */
int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
/* set SRP N/g param callback for verification */
int (*SRP_verify_param_callback) (SSL *, void *);
/* set SRP client passwd callback */
char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
char *login;
BIGNUM *N, *g, *s, *B, *A;
BIGNUM *a, *b, *v;
char *info;
int strength;
unsigned long srp_Mask;
} SRP_CTX;
# endif
typedef enum {
SSL_EARLY_DATA_NONE = 0,
SSL_EARLY_DATA_CONNECT_RETRY,
SSL_EARLY_DATA_CONNECTING,
SSL_EARLY_DATA_WRITE_RETRY,
SSL_EARLY_DATA_WRITING,
SSL_EARLY_DATA_WRITE_FLUSH,
SSL_EARLY_DATA_UNAUTH_WRITING,
SSL_EARLY_DATA_FINISHED_WRITING,
SSL_EARLY_DATA_ACCEPT_RETRY,
SSL_EARLY_DATA_ACCEPTING,
SSL_EARLY_DATA_READ_RETRY,
SSL_EARLY_DATA_READING,
SSL_EARLY_DATA_FINISHED_READING
} SSL_EARLY_DATA_STATE;
/*
* We check that the amount of unreadable early data doesn't exceed
* max_early_data. max_early_data is given in plaintext bytes. However if it is
* unreadable then we only know the number of ciphertext bytes. We also don't
* know how much the overhead should be because it depends on the ciphersuite.
* We make a small allowance. We assume 5 records of actual data plus the end
* of early data alert record. Each record has a tag and a content type byte.
* The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
* content of the alert record either which is 2 bytes.
*/
# define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
/*
* The allowance we have between the client's calculated ticket age and our own.
* We allow for 10 seconds (units are in ms). If a ticket is presented and the
* client's age calculation is different by more than this than our own then we
* do not allow that ticket for early_data.
*/
# define TICKET_AGE_ALLOWANCE (10 * 1000)
#define MAX_COMPRESSIONS_SIZE 255
struct ssl_comp_st {
int id;
const char *name;
COMP_METHOD *method;
};
typedef struct raw_extension_st {
/* Raw packet data for the extension */
PACKET data;
/* Set to 1 if the extension is present or 0 otherwise */
int present;
/* Set to 1 if we have already parsed the extension or 0 otherwise */
int parsed;
/* The type of this extension, i.e. a TLSEXT_TYPE_* value */
unsigned int type;
/* Track what order extensions are received in (0-based). */
size_t received_order;
} RAW_EXTENSION;
typedef struct {
unsigned int isv2;
unsigned int legacy_version;
unsigned char random[SSL3_RANDOM_SIZE];
size_t session_id_len;
unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
size_t dtls_cookie_len;
unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
PACKET ciphersuites;
size_t compressions_len;
unsigned char compressions[MAX_COMPRESSIONS_SIZE];
PACKET extensions;
size_t pre_proc_exts_len;
RAW_EXTENSION *pre_proc_exts;
} CLIENTHELLO_MSG;
/*
* Extension index values NOTE: Any updates to these defines should be mirrored
* with equivalent updates to ext_defs in extensions.c
*/
typedef enum tlsext_index_en {
TLSEXT_IDX_renegotiate,
TLSEXT_IDX_server_name,
TLSEXT_IDX_max_fragment_length,
TLSEXT_IDX_srp,
TLSEXT_IDX_ec_point_formats,
TLSEXT_IDX_supported_groups,
TLSEXT_IDX_session_ticket,
TLSEXT_IDX_status_request,
TLSEXT_IDX_next_proto_neg,
TLSEXT_IDX_application_layer_protocol_negotiation,
TLSEXT_IDX_use_srtp,
TLSEXT_IDX_encrypt_then_mac,
TLSEXT_IDX_signed_certificate_timestamp,
TLSEXT_IDX_extended_master_secret,
TLSEXT_IDX_signature_algorithms_cert,
TLSEXT_IDX_post_handshake_auth,
TLSEXT_IDX_signature_algorithms,
TLSEXT_IDX_supported_versions,
TLSEXT_IDX_psk_kex_modes,
TLSEXT_IDX_key_share,
TLSEXT_IDX_cookie,
TLSEXT_IDX_cryptopro_bug,
TLSEXT_IDX_early_data,
TLSEXT_IDX_certificate_authorities,
TLSEXT_IDX_padding,
TLSEXT_IDX_psk,
/* Dummy index - must always be the last entry */
TLSEXT_IDX_num_builtins
} TLSEXT_INDEX;
DEFINE_LHASH_OF(SSL_SESSION);
/* Needed in ssl_cert.c */
DEFINE_LHASH_OF(X509_NAME);
# define TLSEXT_KEYNAME_LENGTH 16
# define TLSEXT_TICK_KEY_LENGTH 32
typedef struct ssl_ctx_ext_secure_st {
unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
} SSL_CTX_EXT_SECURE;
struct ssl_ctx_st {
const SSL_METHOD *method;
STACK_OF(SSL_CIPHER) *cipher_list;
/* same as above but sorted for lookup */
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
/* TLSv1.3 specific ciphersuites */
STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
struct x509_store_st /* X509_STORE */ *cert_store;
LHASH_OF(SSL_SESSION) *sessions;
/*
* Most session-ids that will be cached, default is
* SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
*/
size_t session_cache_size;
struct ssl_session_st *session_cache_head;
struct ssl_session_st *session_cache_tail;
/*
* This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
* SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
* means only SSL_accept will cache SSL_SESSIONS.
*/
uint32_t session_cache_mode;
/*
* If timeout is not 0, it is the default timeout value set when
* SSL_new() is called. This has been put in to make life easier to set
* things up
*/
long session_timeout;
/*
* If this callback is not null, it will be called each time a session id
* is added to the cache. If this function returns 1, it means that the
* callback will do a SSL_SESSION_free() when it has finished using it.
* Otherwise, on 0, it means the callback has finished with it. If
* remove_session_cb is not null, it will be called when a session-id is
* removed from the cache. After the call, OpenSSL will
* SSL_SESSION_free() it.
*/
int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
const unsigned char *data, int len,
int *copy);
struct {
TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
TSAN_QUALIFIER int sess_miss; /* session lookup misses */
TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
* the cache was passed back via
* the callback. This indicates
* that the application is
* supplying session-id's from
* other processes - spooky
* :-) */
} stats;
CRYPTO_REF_COUNT references;
/* if defined, these override the X509_verify_cert() calls */
int (*app_verify_callback) (X509_STORE_CTX *, void *);
void *app_verify_arg;
/*
* before OpenSSL 0.9.7, 'app_verify_arg' was ignored
* ('app_verify_callback' was called with just one argument)
*/
/* Default password callback. */
pem_password_cb *default_passwd_callback;
/* Default password callback user data. */
void *default_passwd_callback_userdata;
/* get client cert callback */
int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
/* cookie generate callback */
int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
unsigned int *cookie_len);
/* verify cookie callback */
int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
unsigned int cookie_len);
/* TLS1.3 app-controlled cookie generate callback */
int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
size_t *cookie_len);
/* TLS1.3 verify app-controlled cookie callback */
int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
size_t cookie_len);
CRYPTO_EX_DATA ex_data;
const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
STACK_OF(X509) *extra_certs;
STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
/* Default values used when no per-SSL value is defined follow */
/* used if SSL's info_callback is NULL */
void (*info_callback) (const SSL *ssl, int type, int val);
/*
* What we put in certificate_authorities extension for TLS 1.3
* (ClientHello and CertificateRequest) or just client cert requests for
* earlier versions. If client_ca_names is populated then it is only used
* for client cert requests, and in preference to ca_names.
*/
STACK_OF(X509_NAME) *ca_names;
STACK_OF(X509_NAME) *client_ca_names;
/*
* Default values to use in SSL structures follow (these are copied by
* SSL_new)
*/
uint32_t options;
uint32_t mode;
int min_proto_version;
int max_proto_version;
size_t max_cert_list;
struct cert_st /* CERT */ *cert;
int read_ahead;
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
uint32_t verify_mode;
size_t sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* called 'verify_callback' in the SSL */
int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
X509_VERIFY_PARAM *param;
int quiet_shutdown;
# ifndef OPENSSL_NO_CT
CTLOG_STORE *ctlog_store; /* CT Log Store */
/*
* Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
* If they are not, the connection should be aborted.
*/
ssl_ct_validation_cb ct_validation_callback;
void *ct_validation_callback_arg;
# endif
/*
* If we're using more than one pipeline how should we divide the data
* up between the pipes?
*/
size_t split_send_fragment;
/*
* Maximum amount of data to send in one fragment. actual record size can
* be more than this due to padding and MAC overheads.
*/
size_t max_send_fragment;
/* Up to how many pipelines should we use? If 0 then 1 is assumed */
size_t max_pipelines;
/* The default read buffer length to use (0 means not set) */
size_t default_read_buf_len;
# ifndef OPENSSL_NO_ENGINE
/*
* Engine to pass requests for client certs to
*/
ENGINE *client_cert_engine;
# endif
/* ClientHello callback. Mostly for extensions, but not entirely. */
SSL_client_hello_cb_fn client_hello_cb;
void *client_hello_cb_arg;
/* TLS extensions. */
struct {
/* TLS extensions servername callback */
int (*servername_cb) (SSL *, int *, void *);
void *servername_arg;
/* RFC 4507 session ticket keys */
unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
SSL_CTX_EXT_SECURE *secure;
/* Callback to support customisation of ticket key setting */
int (*ticket_key_cb) (SSL *ssl,
unsigned char *name, unsigned char *iv,
EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
/* certificate status request info */
/* Callback for status request */
int (*status_cb) (SSL *ssl, void *arg);
void *status_arg;
/* ext status type used for CSR extension (OCSP Stapling) */
int status_type;
/* RFC 4366 Maximum Fragment Length Negotiation */
uint8_t max_fragment_len_mode;
# ifndef OPENSSL_NO_EC
/* EC extension values inherited by SSL structure */
size_t ecpointformats_len;
unsigned char *ecpointformats;
# endif /* OPENSSL_NO_EC */
size_t supportedgroups_len;
uint16_t *supportedgroups;
/*
* ALPN information (we are in the process of transitioning from NPN to
* ALPN.)
*/
/*-
* For a server, this contains a callback function that allows the
* server to select the protocol for the connection.
* out: on successful return, this must point to the raw protocol
* name (without the length prefix).
* outlen: on successful return, this contains the length of |*out|.
* in: points to the client's list of supported protocols in
* wire-format.
* inlen: the length of |in|.
*/
int (*alpn_select_cb) (SSL *s,
const unsigned char **out,
unsigned char *outlen,
const unsigned char *in,
unsigned int inlen, void *arg);
void *alpn_select_cb_arg;
/*
* For a client, this contains the list of supported protocols in wire
* format.
*/
unsigned char *alpn;
size_t alpn_len;
# ifndef OPENSSL_NO_NEXTPROTONEG
/* Next protocol negotiation information */
/*
* For a server, this contains a callback function by which the set of
* advertised protocols can be provided.
*/
SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
void *npn_advertised_cb_arg;
/*
* For a client, this contains a callback function that selects the next
* protocol from the list provided by the server.
*/
SSL_CTX_npn_select_cb_func npn_select_cb;
void *npn_select_cb_arg;
# endif
unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
} ext;
# ifndef OPENSSL_NO_PSK
SSL_psk_client_cb_func psk_client_callback;
SSL_psk_server_cb_func psk_server_callback;
# endif
SSL_psk_find_session_cb_func psk_find_session_cb;
SSL_psk_use_session_cb_func psk_use_session_cb;
# ifndef OPENSSL_NO_SRP
SRP_CTX srp_ctx; /* ctx for SRP authentication */
# endif
/* Shared DANE context */
struct dane_ctx_st dane;
# ifndef OPENSSL_NO_SRTP
/* SRTP profiles we are willing to do from RFC 5764 */
STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
# endif
/*
* Callback for disabling session caching and ticket support on a session
* basis, depending on the chosen cipher.
*/
int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
CRYPTO_RWLOCK *lock;
/*
* Callback for logging key material for use with debugging tools like
* Wireshark. The callback should log `line` followed by a newline.
*/
SSL_CTX_keylog_cb_func keylog_callback;
/*
* The maximum number of bytes advertised in session tickets that can be
* sent as early data.
*/
uint32_t max_early_data;
/*
* The maximum number of bytes of early data that a server will tolerate
* (which should be at least as much as max_early_data).
*/
uint32_t recv_max_early_data;
/* TLS1.3 padding callback */
size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
void *record_padding_arg;
size_t block_padding;
/* Session ticket appdata */
SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
void *ticket_cb_data;
/* The number of TLS1.3 tickets to automatically send */
size_t num_tickets;
/* Callback to determine if early_data is acceptable or not */
SSL_allow_early_data_cb_fn allow_early_data_cb;
void *allow_early_data_cb_data;
/* Do we advertise Post-handshake auth support? */
int pha_enabled;
/* Callback for SSL async handling */
SSL_async_callback_fn async_cb;
void *async_cb_arg;
};
typedef struct cert_pkey_st CERT_PKEY;
struct ssl_st {
/*
* protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
* DTLS1_VERSION)
*/
int version;
/* SSLv3 */
const SSL_METHOD *method;
/*
* There are 2 BIO's even though they are normally both the same. This
* is so data can be read and written to different handlers
*/
/* used by SSL_read */
BIO *rbio;
/* used by SSL_write */
BIO *wbio;
/* used during session-id reuse to concatenate messages */
BIO *bbio;
/*
* This holds a variable that indicates what we were doing when a 0 or -1
* is returned. This is needed for non-blocking IO so we know what
* request needs re-doing when in SSL_accept or SSL_connect
*/
int rwstate;
int (*handshake_func) (SSL *);
/*
* Imagine that here's a boolean member "init" that is switched as soon
* as SSL_set_{accept/connect}_state is called for the first time, so
* that "state" and "handshake_func" are properly initialized. But as
* handshake_func is == 0 until then, we use this test instead of an
* "init" member.
*/
/* are we the server side? */
int server;
/*
* Generate a new session or reuse an old one.
* NB: For servers, the 'new' session may actually be a previously
* cached session or even the previous session unless
* SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
*/
int new_session;
/* don't send shutdown packets */
int quiet_shutdown;
/* we have shut things down, 0x01 sent, 0x02 for received */
int shutdown;
/* where we are */
OSSL_STATEM statem;
SSL_EARLY_DATA_STATE early_data_state;
BUF_MEM *init_buf; /* buffer used during init */
void *init_msg; /* pointer to handshake message body, set by
* ssl3_get_message() */
size_t init_num; /* amount read/written */
size_t init_off; /* amount read/written */
struct {
long flags;
size_t read_mac_secret_size;
unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
size_t write_mac_secret_size;
unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
unsigned char server_random[SSL3_RANDOM_SIZE];
unsigned char client_random[SSL3_RANDOM_SIZE];
/* flags for countermeasure against known-IV weakness */
int need_empty_fragments;
int empty_fragment_done;
/* used during startup, digest all incoming/outgoing packets */
BIO *handshake_buffer;
/*
* When handshake digest is determined, buffer is hashed and
* freed and MD_CTX for the required digest is stored here.
*/
EVP_MD_CTX *handshake_dgst;
/*
* Set whenever an expected ChangeCipherSpec message is processed.
* Unset when the peer's Finished message is received.
* Unexpected ChangeCipherSpec messages trigger a fatal alert.
*/
int change_cipher_spec;
int warn_alert;
int fatal_alert;
/*
* we allow one fatal and one warning alert to be outstanding, send close
* alert via the warning alert
*/
int alert_dispatch;
unsigned char send_alert[2];
/*
* This flag is set when we should renegotiate ASAP, basically when there
* is no more data in the read or write buffers
*/
int renegotiate;
int total_renegotiations;
int num_renegotiations;
int in_read_app_data;
struct {
/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
size_t finish_md_len;
unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
size_t peer_finish_md_len;
size_t message_size;
int message_type;
/* used to hold the new cipher we are going to use */
const SSL_CIPHER *new_cipher;
# if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
# endif
/* used for certificate requests */
int cert_req;
/* Certificate types in certificate request message. */
uint8_t *ctype;
size_t ctype_len;
/* Certificate authorities list peer sent */
STACK_OF(X509_NAME) *peer_ca_names;
size_t key_block_length;
unsigned char *key_block;
const EVP_CIPHER *new_sym_enc;
const EVP_MD *new_hash;
int new_mac_pkey_type;
size_t new_mac_secret_size;
# ifndef OPENSSL_NO_COMP
const SSL_COMP *new_compression;
# else
char *new_compression;
# endif
int cert_request;
/* Raw values of the cipher list from a client */
unsigned char *ciphers_raw;
size_t ciphers_rawlen;
/* Temporary storage for premaster secret */
unsigned char *pms;
size_t pmslen;
# ifndef OPENSSL_NO_PSK
/* Temporary storage for PSK key */
unsigned char *psk;
size_t psklen;
# endif
/* Signature algorithm we actually use */
const struct sigalg_lookup_st *sigalg;
/* Pointer to certificate we use */
CERT_PKEY *cert;
/*
* signature algorithms peer reports: e.g. supported signature
* algorithms extension for server or as part of a certificate
* request for client.
* Keep track of the algorithms for TLS and X.509 usage separately.
*/
uint16_t *peer_sigalgs;
uint16_t *peer_cert_sigalgs;
/* Size of above arrays */
size_t peer_sigalgslen;
size_t peer_cert_sigalgslen;
/* Sigalg peer actually uses */
const struct sigalg_lookup_st *peer_sigalg;
/*
* Set if corresponding CERT_PKEY can be used with current
* SSL session: e.g. appropriate curve, signature algorithms etc.
* If zero it can't be used at all.
*/
uint32_t valid_flags[SSL_PKEY_NUM];
/*
* For servers the following masks are for the key and auth algorithms
* that are supported by the certs below. For clients they are masks of
* *disabled* algorithms based on the current session.
*/
uint32_t mask_k;
uint32_t mask_a;
/*
* The following are used by the client to see if a cipher is allowed or
* not. It contains the minimum and maximum version the client's using
* based on what it knows so far.
*/
int min_ver;
int max_ver;
} tmp;
/* Connection binding to prevent renegotiation attacks */
unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
size_t previous_client_finished_len;
unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
size_t previous_server_finished_len;
int send_connection_binding; /* TODOEKR */
# ifndef OPENSSL_NO_NEXTPROTONEG
/*
* Set if we saw the Next Protocol Negotiation extension from our peer.
*/
int npn_seen;
# endif
/*
* ALPN information (we are in the process of transitioning from NPN to
* ALPN.)
*/
/*
* In a server these point to the selected ALPN protocol after the
* ClientHello has been processed. In a client these contain the protocol
* that the server selected once the ServerHello has been processed.
*/
unsigned char *alpn_selected;
size_t alpn_selected_len;
/* used by the server to know what options were proposed */
unsigned char *alpn_proposed;
size_t alpn_proposed_len;
/* used by the client to know if it actually sent alpn */
int alpn_sent;
# ifndef OPENSSL_NO_EC
/*
* This is set to true if we believe that this is a version of Safari
* running on OS X 10.6 or newer. We wish to know this because Safari on
* 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
*/
char is_probably_safari;
# endif /* !OPENSSL_NO_EC */
/* For clients: peer temporary key */
# if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
/* The group_id for the DH/ECDH key */
uint16_t group_id;
EVP_PKEY *peer_tmp;
# endif
} s3;
struct dtls1_state_st *d1; /* DTLSv1 variables */
/* callback that allows applications to peek at protocol messages */
void (*msg_callback) (int write_p, int version, int content_type,
const void *buf, size_t len, SSL *ssl, void *arg);
void *msg_callback_arg;
int hit; /* reusing a previous session */
X509_VERIFY_PARAM *param;
/* Per connection DANE state */
SSL_DANE dane;
/* crypto */
STACK_OF(SSL_CIPHER) *peer_ciphers;
STACK_OF(SSL_CIPHER) *cipher_list;
STACK_OF(SSL_CIPHER) *cipher_list_by_id;
/* TLSv1.3 specific ciphersuites */
STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
/*
* These are the ones being used, the ones in SSL_SESSION are the ones to
* be 'copied' into these ones
*/
uint32_t mac_flags;
/*
* The TLS1.3 secrets.
*/
unsigned char early_secret[EVP_MAX_MD_SIZE];
unsigned char handshake_secret[EVP_MAX_MD_SIZE];
unsigned char master_secret[EVP_MAX_MD_SIZE];
unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
EVP_MD_CTX *read_hash; /* used for mac generation */
COMP_CTX *compress; /* compression */
COMP_CTX *expand; /* uncompress */
EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
EVP_MD_CTX *write_hash; /* used for mac generation */
/* session info */
/* client cert? */
/* This is used to hold the server certificate used */
struct cert_st /* CERT */ *cert;
/*
* The hash of all messages prior to the CertificateVerify, and the length
* of that hash.
*/
unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
size_t cert_verify_hash_len;
/* Flag to indicate whether we should send a HelloRetryRequest or not */
enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
hello_retry_request;
/*
* the session_id_context is used to ensure sessions are only reused in
* the appropriate context
*/
size_t sid_ctx_length;
unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
/* This can also be in the session once a session is established */
SSL_SESSION *session;
/* TLSv1.3 PSK session */
SSL_SESSION *psksession;
unsigned char *psksession_id;
size_t psksession_id_len;
/* Default generate session ID callback. */
GEN_SESSION_CB generate_session_id;
/*
* The temporary TLSv1.3 session id. This isn't really a session id at all
* but is a random value sent in the legacy session id field.
*/
unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
size_t tmp_session_id_len;
/* Used in SSL3 */
/*
* 0 don't care about verify failure.
* 1 fail if verify fails
*/
uint32_t verify_mode;
/* fail if callback returns 0 */
int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
/* optional informational callback */
void (*info_callback) (const SSL *ssl, int type, int val);
/* error bytes to be written */
int error;
/* actual code */
int error_code;
# ifndef OPENSSL_NO_PSK
SSL_psk_client_cb_func psk_client_callback;
SSL_psk_server_cb_func psk_server_callback;
# endif
SSL_psk_find_session_cb_func psk_find_session_cb;
SSL_psk_use_session_cb_func psk_use_session_cb;
SSL_CTX *ctx;
/* Verified chain of peer */
STACK_OF(X509) *verified_chain;
long verify_result;
/* extra application data */
CRYPTO_EX_DATA ex_data;
/*
* What we put in certificate_authorities extension for TLS 1.3
* (ClientHello and CertificateRequest) or just client cert requests for
* earlier versions. If client_ca_names is populated then it is only used
* for client cert requests, and in preference to ca_names.
*/
STACK_OF(X509_NAME) *ca_names;
STACK_OF(X509_NAME) *client_ca_names;
CRYPTO_REF_COUNT references;
/* protocol behaviour */
uint32_t options;
/* API behaviour */
uint32_t mode;
int min_proto_version;
int max_proto_version;
size_t max_cert_list;
int first_packet;
/*
* What was passed in ClientHello.legacy_version. Used for RSA pre-master
* secret and SSLv3/TLS (<=1.2) rollback check
*/
int client_version;
/*
* If we're using more than one pipeline how should we divide the data
* up between the pipes?
*/
size_t split_send_fragment;
/*
* Maximum amount of data to send in one fragment. actual record size can
* be more than this due to padding and MAC overheads.
*/
size_t max_send_fragment;
/* Up to how many pipelines should we use? If 0 then 1 is assumed */
size_t max_pipelines;
struct {
/* Built-in extension flags */
uint8_t extflags[TLSEXT_IDX_num_builtins];
/* TLS extension debug callback */
void (*debug_cb)(SSL *s, int client_server, int type,
const unsigned char *data, int len, void *arg);
void *debug_arg;
char *hostname;
/* certificate status request info */
/* Status type or -1 if no status type */
int status_type;
/* Raw extension data, if seen */
unsigned char *scts;
/* Length of raw extension data, if seen */
uint16_t scts_len;
/* Expect OCSP CertificateStatus message */
int status_expected;
struct {
/* OCSP status request only */
STACK_OF(OCSP_RESPID) *ids;
X509_EXTENSIONS *exts;
/* OCSP response received or to be sent */
unsigned char *resp;
size_t resp_len;
} ocsp;
/* RFC4507 session ticket expected to be received or sent */
int ticket_expected;
# ifndef OPENSSL_NO_EC
size_t ecpointformats_len;
/* our list */
unsigned char *ecpointformats;
size_t peer_ecpointformats_len;
/* peer's list */
unsigned char *peer_ecpointformats;
# endif /* OPENSSL_NO_EC */
size_t supportedgroups_len;
/* our list */
uint16_t *supportedgroups;
size_t peer_supportedgroups_len;
/* peer's list */
uint16_t *peer_supportedgroups;
/* TLS Session Ticket extension override */
TLS_SESSION_TICKET_EXT *session_ticket;
/* TLS Session Ticket extension callback */
tls_session_ticket_ext_cb_fn session_ticket_cb;
void *session_ticket_cb_arg;
/* TLS pre-shared secret session resumption */
tls_session_secret_cb_fn session_secret_cb;
void *session_secret_cb_arg;
/*
* For a client, this contains the list of supported protocols in wire
* format.
*/
unsigned char *alpn;
size_t alpn_len;
/*
* Next protocol negotiation. For the client, this is the protocol that
* we sent in NextProtocol and is set when handling ServerHello
* extensions. For a server, this is the client's selected_protocol from
* NextProtocol and is set when handling the NextProtocol message, before
* the Finished message.
*/
unsigned char *npn;
size_t npn_len;
/* The available PSK key exchange modes */
int psk_kex_mode;
/* Set to one if we have negotiated ETM */
int use_etm;
/* Are we expecting to receive early data? */
int early_data;
/* Is the session suitable for early data? */
int early_data_ok;
/* May be sent by a server in HRR. Must be echoed back in ClientHello */
unsigned char *tls13_cookie;
size_t tls13_cookie_len;
/* Have we received a cookie from the client? */
int cookieok;
/*
* Maximum Fragment Length as per RFC 4366.
* If this member contains one of the allowed values (1-4)
* then we should include Maximum Fragment Length Negotiation
* extension in Client Hello.
* Please note that value of this member does not have direct
* effect. The actual (binding) value is stored in SSL_SESSION,
* as this extension is optional on server side.
*/
uint8_t max_fragment_len_mode;
/*
* On the client side the number of ticket identities we sent in the
* ClientHello. On the server side the identity of the ticket we
* selected.
*/
int tick_identity;
} ext;
/*
* Parsed form of the ClientHello, kept around across client_hello_cb
* calls.
*/
CLIENTHELLO_MSG *clienthello;
/*-
* no further mod of servername
* 0 : call the servername extension callback.
* 1 : prepare 2, allow last ack just after in server callback.
* 2 : don't call servername callback, no ack in server hello
*/
int servername_done;
# ifndef OPENSSL_NO_CT
/*
* Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
* If they are not, the connection should be aborted.
*/
ssl_ct_validation_cb ct_validation_callback;
/* User-supplied argument that is passed to the ct_validation_callback */
void *ct_validation_callback_arg;
/*
* Consolidated stack of SCTs from all sources.
* Lazily populated by CT_get_peer_scts(SSL*)
*/
STACK_OF(SCT) *scts;
/* Have we attempted to find/parse SCTs yet? */
int scts_parsed;
# endif
SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
# ifndef OPENSSL_NO_SRTP
/* What we'll do */
STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
/* What's been chosen */
SRTP_PROTECTION_PROFILE *srtp_profile;
# endif
/*-
* 1 if we are renegotiating.
* 2 if we are a server and are inside a handshake
* (i.e. not just sending a HelloRequest)
*/
int renegotiate;
/* If sending a KeyUpdate is pending */
int key_update;
/* Post-handshake authentication state */
SSL_PHA_STATE post_handshake_auth;
int pha_enabled;
uint8_t* pha_context;
size_t pha_context_len;
int certreqs_sent;
EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
# ifndef OPENSSL_NO_SRP
/* ctx for SRP authentication */
SRP_CTX srp_ctx;
# endif
/*
* Callback for disabling session caching and ticket support on a session
* basis, depending on the chosen cipher.
*/
int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
RECORD_LAYER rlayer;
/* Default password callback. */
pem_password_cb *default_passwd_callback;
/* Default password callback user data. */
void *default_passwd_callback_userdata;
/* Async Job info */
ASYNC_JOB *job;
ASYNC_WAIT_CTX *waitctx;
size_t asyncrw;
/*
* The maximum number of bytes advertised in session tickets that can be
* sent as early data.
*/
uint32_t max_early_data;
/*
* The maximum number of bytes of early data that a server will tolerate
* (which should be at least as much as max_early_data).
*/
uint32_t recv_max_early_data;
/*
* The number of bytes of early data received so far. If we accepted early
* data then this is a count of the plaintext bytes. If we rejected it then
* this is a count of the ciphertext bytes.
*/
uint32_t early_data_count;
/* TLS1.3 padding callback */
size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
void *record_padding_arg;
size_t block_padding;
CRYPTO_RWLOCK *lock;
/* The number of TLS1.3 tickets to automatically send */
size_t num_tickets;
/* The number of TLS1.3 tickets actually sent so far */
size_t sent_tickets;
/* The next nonce value to use when we send a ticket on this connection */
uint64_t next_ticket_nonce;
/* Callback to determine if early_data is acceptable or not */
SSL_allow_early_data_cb_fn allow_early_data_cb;
void *allow_early_data_cb_data;
/* Callback for SSL async handling */
SSL_async_callback_fn async_cb;
void *async_cb_arg;
/*
* Signature algorithms shared by client and server: cached because these
* are used most often.
*/
const struct sigalg_lookup_st **shared_sigalgs;
size_t shared_sigalgslen;
};
/*
* Structure containing table entry of values associated with the signature
* algorithms (signature scheme) extension
*/
typedef struct sigalg_lookup_st {
/* TLS 1.3 signature scheme name */
const char *name;
/* Raw value used in extension */
uint16_t sigalg;
/* NID of hash algorithm or NID_undef if no hash */
int hash;
/* Index of hash algorithm or -1 if no hash algorithm */
int hash_idx;
/* NID of signature algorithm */
int sig;
/* Index of signature algorithm */
int sig_idx;
/* Combined hash and signature NID, if any */
int sigandhash;
/* Required public key curve (ECDSA only) */
int curve;
} SIGALG_LOOKUP;
typedef struct tls_group_info_st {
int nid; /* Curve NID */
int secbits; /* Bits of security (from SP800-57) */
uint32_t flags; /* For group type and applicable TLS versions */
uint16_t group_id; /* Group ID */
} TLS_GROUP_INFO;
/* flags values */
# define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
# define TLS_GROUP_CURVE_PRIME 0x00000001U
# define TLS_GROUP_CURVE_CHAR2 0x00000002U
# define TLS_GROUP_CURVE_CUSTOM 0x00000004U
# define TLS_GROUP_FFDHE 0x00000008U
# define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
# define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
/*
* Structure containing table entry of certificate info corresponding to
* CERT_PKEY entries
*/
typedef struct {
int nid; /* NID of public key algorithm */
uint32_t amask; /* authmask corresponding to key type */
} SSL_CERT_LOOKUP;
/* DTLS structures */
# ifndef OPENSSL_NO_SCTP
# define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
# endif
/* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
# define DTLS1_MAX_MTU_OVERHEAD 48
/*
* Flag used in message reuse to indicate the buffer contains the record
* header as well as the handshake message header.
*/
# define DTLS1_SKIP_RECORD_HEADER 2
struct dtls1_retransmit_state {
EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
EVP_MD_CTX *write_hash; /* used for mac generation */
COMP_CTX *compress; /* compression */
SSL_SESSION *session;
unsigned short epoch;
};
struct hm_header_st {
unsigned char type;
size_t msg_len;
unsigned short seq;
size_t frag_off;
size_t frag_len;
unsigned int is_ccs;
struct dtls1_retransmit_state saved_retransmit_state;
};
struct dtls1_timeout_st {
/* Number of read timeouts so far */
unsigned int read_timeouts;
/* Number of write timeouts so far */
unsigned int write_timeouts;
/* Number of alerts received so far */
unsigned int num_alerts;
};
typedef struct hm_fragment_st {
struct hm_header_st msg_header;
unsigned char *fragment;
unsigned char *reassembly;
} hm_fragment;
typedef struct pqueue_st pqueue;
typedef struct pitem_st pitem;
struct pitem_st {
unsigned char priority[8]; /* 64-bit value in big-endian encoding */
void *data;
pitem *next;
};
typedef struct pitem_st *piterator;
pitem *pitem_new(unsigned char *prio64be, void *data);
void pitem_free(pitem *item);
pqueue *pqueue_new(void);
void pqueue_free(pqueue *pq);
pitem *pqueue_insert(pqueue *pq, pitem *item);
pitem *pqueue_peek(pqueue *pq);
pitem *pqueue_pop(pqueue *pq);
pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
pitem *pqueue_iterator(pqueue *pq);
pitem *pqueue_next(piterator *iter);
size_t pqueue_size(pqueue *pq);
typedef struct dtls1_state_st {
unsigned char cookie[DTLS1_COOKIE_LENGTH];
size_t cookie_len;
unsigned int cookie_verified;
/* handshake message numbers */
unsigned short handshake_write_seq;
unsigned short next_handshake_write_seq;
unsigned short handshake_read_seq;
/* Buffered handshake messages */
pqueue *buffered_messages;
/* Buffered (sent) handshake records */
pqueue *sent_messages;
size_t link_mtu; /* max on-the-wire DTLS packet size */
size_t mtu; /* max DTLS packet size */
struct hm_header_st w_msg_hdr;
struct hm_header_st r_msg_hdr;
struct dtls1_timeout_st timeout;
/*
* Indicates when the last handshake msg sent will timeout
*/
struct timeval next_timeout;
/* Timeout duration */
unsigned int timeout_duration_us;
unsigned int retransmitting;
# ifndef OPENSSL_NO_SCTP
int shutdown_received;
# endif
DTLS_timer_cb timer_cb;
} DTLS1_STATE;
# ifndef OPENSSL_NO_EC
/*
* From ECC-TLS draft, used in encoding the curve type in ECParameters
*/
# define EXPLICIT_PRIME_CURVE_TYPE 1
# define EXPLICIT_CHAR2_CURVE_TYPE 2
# define NAMED_CURVE_TYPE 3
# endif /* OPENSSL_NO_EC */
struct cert_pkey_st {
X509 *x509;
EVP_PKEY *privatekey;
/* Chain for this certificate */
STACK_OF(X509) *chain;
/*-
* serverinfo data for this certificate. The data is in TLS Extension
* wire format, specifically it's a series of records like:
* uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
* uint16_t length;
* uint8_t data[length];
*/
unsigned char *serverinfo;
size_t serverinfo_length;
};
/* Retrieve Suite B flags */
# define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
/* Uses to check strict mode: suite B modes are always strict */
# define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
(SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
typedef enum {
ENDPOINT_CLIENT = 0,
ENDPOINT_SERVER,
ENDPOINT_BOTH
} ENDPOINT;
typedef struct {
unsigned short ext_type;
ENDPOINT role;
/* The context which this extension applies to */
unsigned int context;
/*
* Per-connection flags relating to this extension type: not used if
* part of an SSL_CTX structure.
*/
uint32_t ext_flags;
SSL_custom_ext_add_cb_ex add_cb;
SSL_custom_ext_free_cb_ex free_cb;
void *add_arg;
SSL_custom_ext_parse_cb_ex parse_cb;
void *parse_arg;
} custom_ext_method;
/* ext_flags values */
/*
* Indicates an extension has been received. Used to check for unsolicited or
* duplicate extensions.
*/
# define SSL_EXT_FLAG_RECEIVED 0x1
/*
* Indicates an extension has been sent: used to enable sending of
* corresponding ServerHello extension.
*/
# define SSL_EXT_FLAG_SENT 0x2
typedef struct {
custom_ext_method *meths;
size_t meths_count;
} custom_ext_methods;
typedef struct cert_st {
/* Current active set */
/*
* ALWAYS points to an element of the pkeys array
* Probably it would make more sense to store
* an index, not a pointer.
*/
CERT_PKEY *key;
# ifndef OPENSSL_NO_DH
EVP_PKEY *dh_tmp;
DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
int dh_tmp_auto;
# endif
/* Flags related to certificates */
uint32_t cert_flags;
CERT_PKEY pkeys[SSL_PKEY_NUM];
/* Custom certificate types sent in certificate request message. */
uint8_t *ctype;
size_t ctype_len;
/*
* supported signature algorithms. When set on a client this is sent in
* the client hello as the supported signature algorithms extension. For
* servers it represents the signature algorithms we are willing to use.
*/
uint16_t *conf_sigalgs;
/* Size of above array */
size_t conf_sigalgslen;
/*
* Client authentication signature algorithms, if not set then uses
* conf_sigalgs. On servers these will be the signature algorithms sent
* to the client in a certificate request for TLS 1.2. On a client this
* represents the signature algorithms we are willing to use for client
* authentication.
*/
uint16_t *client_sigalgs;
/* Size of above array */
size_t client_sigalgslen;
/*
* Certificate setup callback: if set is called whenever a certificate
* may be required (client or server). the callback can then examine any
* appropriate parameters and setup any certificates required. This
* allows advanced applications to select certificates on the fly: for
* example based on supported signature algorithms or curves.
*/
int (*cert_cb) (SSL *ssl, void *arg);
void *cert_cb_arg;
/*
* Optional X509_STORE for chain building or certificate validation If
* NULL the parent SSL_CTX store is used instead.
*/
X509_STORE *chain_store;
X509_STORE *verify_store;
/* Custom extensions */
custom_ext_methods custext;
/* Security callback */
int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
void *other, void *ex);
/* Security level */
int sec_level;
void *sec_ex;
# ifndef OPENSSL_NO_PSK
/* If not NULL psk identity hint to use for servers */
char *psk_identity_hint;
# endif
CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
CRYPTO_RWLOCK *lock;
} CERT;
# define FP_ICC (int (*)(const void *,const void *))
/*
* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
* of a mess of functions, but hell, think of it as an opaque structure :-)
*/
typedef struct ssl3_enc_method {
int (*enc) (SSL *, SSL3_RECORD *, size_t, int);
int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
int (*setup_key_block) (SSL *);
int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
size_t, size_t *);
int (*change_cipher_state) (SSL *, int);
size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
const char *client_finished_label;
size_t client_finished_label_len;
const char *server_finished_label;
size_t server_finished_label_len;
int (*alert_value) (int);
int (*export_keying_material) (SSL *, unsigned char *, size_t,
const char *, size_t,
const unsigned char *, size_t,
int use_context);
/* Various flags indicating protocol version requirements */
uint32_t enc_flags;
/* Set the handshake header */
int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
/* Close construction of the handshake message */
int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
/* Write out handshake message */
int (*do_write) (SSL *s);
} SSL3_ENC_METHOD;
# define ssl_set_handshake_header(s, pkt, htype) \
s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
# define ssl_close_construct_packet(s, pkt, htype) \
s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
# define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
/* Values for enc_flags */
/* Uses explicit IV for CBC mode */
# define SSL_ENC_FLAG_EXPLICIT_IV 0x1
/* Uses signature algorithms extension */
# define SSL_ENC_FLAG_SIGALGS 0x2
/* Uses SHA256 default PRF */
# define SSL_ENC_FLAG_SHA256_PRF 0x4
/* Is DTLS */
# define SSL_ENC_FLAG_DTLS 0x8
/*
* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
* apply to others in future.
*/
# define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
# ifndef OPENSSL_NO_COMP
/* Used for holding the relevant compression methods loaded into SSL_CTX */
typedef struct ssl3_comp_st {
int comp_id; /* The identifier byte for this compression
* type */
char *name; /* Text name used for the compression type */
COMP_METHOD *method; /* The method :-) */
} SSL3_COMP;
# endif
typedef enum downgrade_en {
DOWNGRADE_NONE,
DOWNGRADE_TO_1_2,
DOWNGRADE_TO_1_1
} DOWNGRADE;
/*
* Dummy status type for the status_type extension. Indicates no status type
* set
*/
#define TLSEXT_STATUSTYPE_nothing -1
/* Sigalgs values */
#define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
#define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
#define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
#define TLSEXT_SIGALG_ecdsa_sha224 0x0303
#define TLSEXT_SIGALG_ecdsa_sha1 0x0203
#define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
#define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
#define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
#define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
#define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
#define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
#define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
#define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
#define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
#define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
#define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
#define TLSEXT_SIGALG_dsa_sha256 0x0402
#define TLSEXT_SIGALG_dsa_sha384 0x0502
#define TLSEXT_SIGALG_dsa_sha512 0x0602
#define TLSEXT_SIGALG_dsa_sha224 0x0302
#define TLSEXT_SIGALG_dsa_sha1 0x0202
#define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
#define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
#define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
#define TLSEXT_SIGALG_ed25519 0x0807
#define TLSEXT_SIGALG_ed448 0x0808
/* Known PSK key exchange modes */
#define TLSEXT_KEX_MODE_KE 0x00
#define TLSEXT_KEX_MODE_KE_DHE 0x01
/*
* Internal representations of key exchange modes
*/
#define TLSEXT_KEX_MODE_FLAG_NONE 0
#define TLSEXT_KEX_MODE_FLAG_KE 1
#define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
#define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
/* A dummy signature value not valid for TLSv1.2 signature algs */
#define TLSEXT_signature_rsa_pss 0x0101
/* TLSv1.3 downgrade protection sentinel values */
extern const unsigned char tls11downgrade[8];
extern const unsigned char tls12downgrade[8];
extern SSL3_ENC_METHOD ssl3_undef_enc_method;
__owur const SSL_METHOD *ssl_bad_method(int ver);
__owur const SSL_METHOD *sslv3_method(void);
__owur const SSL_METHOD *sslv3_server_method(void);
__owur const SSL_METHOD *sslv3_client_method(void);
__owur const SSL_METHOD *tlsv1_method(void);
__owur const SSL_METHOD *tlsv1_server_method(void);
__owur const SSL_METHOD *tlsv1_client_method(void);
__owur const SSL_METHOD *tlsv1_1_method(void);
__owur const SSL_METHOD *tlsv1_1_server_method(void);
__owur const SSL_METHOD *tlsv1_1_client_method(void);
__owur const SSL_METHOD *tlsv1_2_method(void);
__owur const SSL_METHOD *tlsv1_2_server_method(void);
__owur const SSL_METHOD *tlsv1_2_client_method(void);
__owur const SSL_METHOD *tlsv1_3_method(void);
__owur const SSL_METHOD *tlsv1_3_server_method(void);
__owur const SSL_METHOD *tlsv1_3_client_method(void);
__owur const SSL_METHOD *dtlsv1_method(void);
__owur const SSL_METHOD *dtlsv1_server_method(void);
__owur const SSL_METHOD *dtlsv1_client_method(void);
__owur const SSL_METHOD *dtls_bad_ver_client_method(void);
__owur const SSL_METHOD *dtlsv1_2_method(void);
__owur const SSL_METHOD *dtlsv1_2_server_method(void);
__owur const SSL_METHOD *dtlsv1_2_client_method(void);
extern const SSL3_ENC_METHOD TLSv1_enc_data;
extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
extern const SSL3_ENC_METHOD SSLv3_enc_data;
extern const SSL3_ENC_METHOD DTLSv1_enc_data;
extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
/*
* Flags for SSL methods
*/
# define SSL_METHOD_NO_FIPS (1U<<0)
# define SSL_METHOD_NO_SUITEB (1U<<1)
# define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
s_connect, enc_data) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
version, \
flags, \
mask, \
tls1_new, \
tls1_clear, \
tls1_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
ssl3_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
ssl3_read_bytes, \
ssl3_write_bytes, \
ssl3_dispatch_alert, \
ssl3_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
ssl3_get_cipher, \
tls1_default_timeout, \
&enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
# define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
SSL3_VERSION, \
SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
SSL_OP_NO_SSLv3, \
ssl3_new, \
ssl3_clear, \
ssl3_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
ssl3_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
ssl3_read_bytes, \
ssl3_write_bytes, \
ssl3_dispatch_alert, \
ssl3_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
ssl3_get_cipher, \
ssl3_default_timeout, \
&SSLv3_enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
# define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
s_connect, enc_data) \
const SSL_METHOD *func_name(void) \
{ \
static const SSL_METHOD func_name##_data= { \
version, \
flags, \
mask, \
dtls1_new, \
dtls1_clear, \
dtls1_free, \
s_accept, \
s_connect, \
ssl3_read, \
ssl3_peek, \
ssl3_write, \
dtls1_shutdown, \
ssl3_renegotiate, \
ssl3_renegotiate_check, \
dtls1_read_bytes, \
dtls1_write_app_data_bytes, \
dtls1_dispatch_alert, \
dtls1_ctrl, \
ssl3_ctx_ctrl, \
ssl3_get_cipher_by_char, \
ssl3_put_cipher_by_char, \
ssl3_pending, \
ssl3_num_ciphers, \
ssl3_get_cipher, \
dtls1_default_timeout, \
&enc_data, \
ssl_undefined_void_function, \
ssl3_callback_ctrl, \
ssl3_ctx_callback_ctrl, \
}; \
return &func_name##_data; \
}
struct openssl_ssl_test_functions {
int (*p_ssl_init_wbio_buffer) (SSL *s);
int (*p_ssl3_setup_buffers) (SSL *s);
};
const char *ssl_protocol_to_string(int version);
/* Returns true if certificate and private key for 'idx' are present */
static ossl_inline int ssl_has_cert(const SSL *s, int idx)
{
if (idx < 0 || idx >= SSL_PKEY_NUM)
return 0;
return s->cert->pkeys[idx].x509 != NULL
&& s->cert->pkeys[idx].privatekey != NULL;
}
static ossl_inline void tls1_get_peer_groups(SSL *s, const uint16_t **pgroups,
size_t *pgroupslen)
{
*pgroups = s->ext.peer_supportedgroups;
*pgroupslen = s->ext.peer_supportedgroups_len;
}
# ifndef OPENSSL_UNIT_TEST
__owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
__owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
void ssl_clear_cipher_ctx(SSL *s);
int ssl_clear_bad_session(SSL *s);
__owur CERT *ssl_cert_new(void);
__owur CERT *ssl_cert_dup(CERT *cert);
void ssl_cert_clear_certs(CERT *c);
void ssl_cert_free(CERT *c);
__owur int ssl_generate_session_id(SSL *s, SSL_SESSION *ss);
__owur int ssl_get_new_session(SSL *s, int session);
__owur SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
size_t sess_id_len);
__owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello);
__owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket);
__owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
__owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
const SSL_CIPHER *const *bp);
__owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
STACK_OF(SSL_CIPHER) **cipher_list,
STACK_OF(SSL_CIPHER) **cipher_list_by_id,
const char *rule_str,
CERT *c);
__owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format);
__owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
STACK_OF(SSL_CIPHER) **skp,
STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
int fatal);
void ssl_update_cache(SSL *s, int mode);
__owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
const EVP_MD **md, int *mac_pkey_type,
size_t *mac_secret_size, SSL_COMP **comp,
int use_etm);
__owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
size_t *int_overhead, size_t *blocksize,
size_t *ext_overhead);
__owur int ssl_cert_is_disabled(size_t idx);
__owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
const unsigned char *ptr,
int all);
__owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
__owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
__owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
__owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
__owur int ssl_cert_select_current(CERT *c, X509 *x);
__owur int ssl_cert_set_current(CERT *c, long arg);
void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
__owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
__owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
__owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
int ref);
__owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
__owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
void *other);
__owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
size_t *pidx);
__owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
int ssl_undefined_function(SSL *s);
__owur int ssl_undefined_void_function(void);
__owur int ssl_undefined_const_function(const SSL *s);
__owur int ssl_get_server_cert_serverinfo(SSL *s,
const unsigned char **serverinfo,
size_t *serverinfo_length);
void ssl_set_masks(SSL *s);
__owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
__owur int ssl_x509err2alert(int type);
void ssl_sort_cipher_list(void);
int ssl_load_ciphers(void);
__owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
size_t len, DOWNGRADE dgrd);
__owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
int free_pms);
__owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
__owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
int genmaster);
__owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl);
__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl);
__owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
__owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
__owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
__owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
size_t *len);
int ssl3_init_finished_mac(SSL *s);
__owur int ssl3_setup_key_block(SSL *s);
__owur int ssl3_change_cipher_state(SSL *s, int which);
void ssl3_cleanup_key_block(SSL *s);
__owur int ssl3_do_write(SSL *s, int type);
int ssl3_send_alert(SSL *s, int level, int desc);
__owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *p, size_t len,
size_t *secret_size);
__owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
__owur int ssl3_num_ciphers(void);
__owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
int ssl3_renegotiate(SSL *ssl);
int ssl3_renegotiate_check(SSL *ssl, int initok);
void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
OSSL_PARAM params[]);
__owur int ssl3_dispatch_alert(SSL *s);
__owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
unsigned char *p);
__owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
void ssl3_free_digest_list(SSL *s);
__owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
CERT_PKEY *cpk);
__owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
STACK_OF(SSL_CIPHER) *clnt,
STACK_OF(SSL_CIPHER) *srvr);
__owur int ssl3_digest_cached_records(SSL *s, int keep);
__owur int ssl3_new(SSL *s);
void ssl3_free(SSL *s);
__owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
__owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
__owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
__owur int ssl3_shutdown(SSL *s);
int ssl3_clear(SSL *s);
__owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
__owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
__owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
__owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
__owur int ssl3_do_change_cipher_spec(SSL *ssl);
__owur long ssl3_default_timeout(void);
__owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
__owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
__owur int tls_setup_handshake(SSL *s);
__owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
__owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
__owur int ssl3_handshake_write(SSL *s);
__owur int ssl_allow_compression(SSL *s);
__owur int ssl_version_supported(const SSL *s, int version,
const SSL_METHOD **meth);
__owur int ssl_set_client_hello_version(SSL *s);
__owur int ssl_check_version_downgrade(SSL *s);
__owur int ssl_set_version_bound(int method_version, int version, int *bound);
__owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
DOWNGRADE *dgrd);
__owur int ssl_choose_client_version(SSL *s, int version,
RAW_EXTENSION *extensions);
__owur int ssl_get_min_max_version(const SSL *s, int *min_version,
int *max_version, int *real_max);
__owur long tls1_default_timeout(void);
__owur int dtls1_do_write(SSL *s, int type);
void dtls1_set_message_header(SSL *s,
unsigned char mt,
size_t len,
size_t frag_off, size_t frag_len);
int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
size_t *written);
__owur int dtls1_read_failed(SSL *s, int code);
__owur int dtls1_buffer_message(SSL *s, int ccs);
__owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
__owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
int dtls1_retransmit_buffered_messages(SSL *s);
void dtls1_clear_received_buffer(SSL *s);
void dtls1_clear_sent_buffer(SSL *s);
void dtls1_get_message_header(unsigned char *data,
struct hm_header_st *msg_hdr);
__owur long dtls1_default_timeout(void);
__owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
__owur int dtls1_check_timeout_num(SSL *s);
__owur int dtls1_handle_timeout(SSL *s);
void dtls1_start_timer(SSL *s);
void dtls1_stop_timer(SSL *s);
__owur int dtls1_is_timer_expired(SSL *s);
void dtls1_double_timeout(SSL *s);
__owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
size_t cookie_len);
__owur size_t dtls1_min_mtu(SSL *s);
void dtls1_hm_fragment_free(hm_fragment *frag);
__owur int dtls1_query_mtu(SSL *s);
__owur int tls1_new(SSL *s);
void tls1_free(SSL *s);
int tls1_clear(SSL *s);
__owur int dtls1_new(SSL *s);
void dtls1_free(SSL *s);
int dtls1_clear(SSL *s);
long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
__owur int dtls1_shutdown(SSL *s);
__owur int dtls1_dispatch_alert(SSL *s);
__owur int ssl_init_wbio_buffer(SSL *s);
int ssl_free_wbio_buffer(SSL *s);
__owur int tls1_change_cipher_state(SSL *s, int which);
__owur int tls1_setup_key_block(SSL *s);
__owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
unsigned char *p);
__owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *p, size_t len,
size_t *secret_size);
__owur int tls13_setup_key_block(SSL *s);
__owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
unsigned char *p);
__owur int tls13_change_cipher_state(SSL *s, int which);
__owur int tls13_update_key(SSL *s, int send);
__owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
const unsigned char *secret,
const unsigned char *label, size_t labellen,
const unsigned char *data, size_t datalen,
unsigned char *out, size_t outlen, int fatal);
__owur int tls13_derive_key(SSL *s, const EVP_MD *md,
const unsigned char *secret, unsigned char *key,
size_t keylen);
__owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
const unsigned char *secret, unsigned char *iv,
size_t ivlen);
__owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
const unsigned char *secret,
unsigned char *fin, size_t finlen);
int tls13_generate_secret(SSL *s, const EVP_MD *md,
const unsigned char *prevsecret,
const unsigned char *insecret,
size_t insecretlen,
unsigned char *outsecret);
__owur int tls13_generate_handshake_secret(SSL *s,
const unsigned char *insecret,
size_t insecretlen);
__owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
unsigned char *prev, size_t prevlen,
size_t *secret_size);
__owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
const char *label, size_t llen,
const unsigned char *p, size_t plen,
int use_context);
__owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen,
const char *label, size_t llen,
const unsigned char *context,
size_t contextlen, int use_context);
__owur int tls13_export_keying_material_early(SSL *s, unsigned char *out,
size_t olen, const char *label,
size_t llen,
const unsigned char *context,
size_t contextlen);
__owur int tls1_alert_code(int code);
__owur int tls13_alert_code(int code);
__owur int ssl3_alert_code(int code);
# ifndef OPENSSL_NO_EC
__owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
# endif
SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
__owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id);
__owur int tls1_group_id2nid(uint16_t group_id);
__owur int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_curves);
__owur uint16_t tls1_shared_group(SSL *s, int nmatch);
__owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
int *curves, size_t ncurves);
__owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen,
const char *str);
__owur EVP_PKEY *ssl_generate_pkey_group(SSL *s, uint16_t id);
__owur int tls_valid_group(SSL *s, uint16_t group_id, int version);
__owur EVP_PKEY *ssl_generate_param_group(uint16_t id);
# ifndef OPENSSL_NO_EC
void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
size_t *num_formats);
__owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
# endif /* OPENSSL_NO_EC */
__owur int tls_group_allowed(SSL *s, uint16_t curve, int op);
void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups,
size_t *pgroupslen);
__owur int tls1_set_server_sigalgs(SSL *s);
__owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
SSL_SESSION **ret);
__owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick,
size_t eticklen,
const unsigned char *sess_id,
size_t sesslen, SSL_SESSION **psess);
__owur int tls_use_ticket(SSL *s);
void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
__owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
__owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
int client);
__owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
int client);
int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
int idx);
void tls1_set_cert_validity(SSL *s);
# ifndef OPENSSL_NO_CT
__owur int ssl_validate_ct(SSL *s);
# endif
# ifndef OPENSSL_NO_DH
__owur DH *ssl_get_auto_dh(SSL *s);
# endif
__owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
__owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
int vfy);
int tls_choose_sigalg(SSL *s, int fatalerrs);
__owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
__owur long ssl_get_algorithm2(SSL *s);
__owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
const uint16_t *psig, size_t psiglen);
__owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
__owur int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert);
__owur int tls1_process_sigalgs(SSL *s);
__owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
__owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd);
__owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
# ifndef OPENSSL_NO_EC
__owur int tls_check_sigalg_curve(const SSL *s, int curve);
# endif
__owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
__owur int ssl_set_client_disabled(SSL *s);
__owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op, int echde);
__owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
size_t *hashlen);
__owur const EVP_MD *ssl_md(int idx);
__owur const EVP_MD *ssl_handshake_md(SSL *s);
__owur const EVP_MD *ssl_prf_md(SSL *s);
/*
* ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
* with |ssl|, if logging is enabled. It returns one on success and zero on
* failure. The entry is identified by the first 8 bytes of
* |encrypted_premaster|.
*/
__owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
const uint8_t *encrypted_premaster,
size_t encrypted_premaster_len,
const uint8_t *premaster,
size_t premaster_len);
/*
* ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
* logging is available. It returns one on success and zero on failure. It tags
* the entry with |label|.
*/
__owur int ssl_log_secret(SSL *ssl, const char *label,
const uint8_t *secret, size_t secret_len);
#define MASTER_SECRET_LABEL "CLIENT_RANDOM"
#define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
#define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
#define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
#define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
#define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
#define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
#define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
/* s3_cbc.c */
__owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
__owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
unsigned char *md_out,
size_t *md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
size_t mac_secret_length, char is_sslv3);
__owur int srp_generate_server_master_secret(SSL *s);
__owur int srp_generate_client_master_secret(SSL *s);
__owur int srp_verify_server_param(SSL *s);
/* statem/statem_srvr.c */
__owur int send_certificate_request(SSL *s);
/* statem/extensions_cust.c */
custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
ENDPOINT role, unsigned int ext_type,
size_t *idx);
void custom_ext_init(custom_ext_methods *meths);
__owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
const unsigned char *ext_data, size_t ext_size,
X509 *x, size_t chainidx);
__owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
size_t chainidx, int maxversion);
__owur int custom_exts_copy(custom_ext_methods *dst,
const custom_ext_methods *src);
__owur int custom_exts_copy_flags(custom_ext_methods *dst,
const custom_ext_methods *src);
void custom_exts_free(custom_ext_methods *exts);
void ssl_comp_free_compression_methods_int(void);
/* ssl_mcnf.c */
void ssl_ctx_system_config(SSL_CTX *ctx);
# else /* OPENSSL_UNIT_TEST */
# define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
# define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
# endif
#endif
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