207 lines
7.7 KiB
C
207 lines
7.7 KiB
C
#ifndef GOST_TOOLS_H
|
|
#define GOST_TOOLS_H
|
|
/**********************************************************************
|
|
* gost_lcl.h *
|
|
* Copyright (c) 2006 Cryptocom LTD *
|
|
* This file is distributed under the same license as OpenSSL *
|
|
* *
|
|
* Internal declarations used in GOST engine *
|
|
* OpenSSL 0.9.9 libraries required to compile and use *
|
|
* this code *
|
|
**********************************************************************/
|
|
#include <openssl/bn.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/dsa.h>
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/engine.h>
|
|
#include <openssl/ec.h>
|
|
#include <unistd.h>
|
|
#include "gost89.h"
|
|
#include "gosthash.h"
|
|
/* Control commands */
|
|
#define GOST_PARAM_CRYPT_PARAMS 0
|
|
#define GOST_PARAM_MAX 0
|
|
#define GOST_CTRL_CRYPT_PARAMS (ENGINE_CMD_BASE+GOST_PARAM_CRYPT_PARAMS)
|
|
|
|
extern const ENGINE_CMD_DEFN gost_cmds[];
|
|
int gost_control_func(ENGINE *e,int cmd, long i, void *p, void (*f)(void));
|
|
const char *get_gost_engine_param(int param);
|
|
int gost_set_default_param(int param, const char *value);
|
|
|
|
/* method registration */
|
|
|
|
int register_ameth_gost (int nid, EVP_PKEY_ASN1_METHOD **ameth, const char* pemstr, const char* info);
|
|
int register_pmeth_gost (int id, EVP_PKEY_METHOD **pmeth, int flags);
|
|
|
|
/* Gost-specific pmeth control-function parameters */
|
|
#define param_ctrl_string "paramset"
|
|
#define EVP_PKEY_CTRL_GOST_PARAMSET (EVP_PKEY_ALG_CTRL+1)
|
|
/* Pmeth internal representation */
|
|
struct gost_pmeth_data {
|
|
int sign_param_nid; /* Should be set whenever parameters are filled */
|
|
EVP_PKEY *eph_seckey;
|
|
EVP_MD *md;
|
|
};
|
|
/* GOST-specific ASN1 structures */
|
|
|
|
|
|
typedef struct {
|
|
ASN1_OCTET_STRING *encrypted_key;
|
|
ASN1_OCTET_STRING *imit;
|
|
} GOST_KEY_INFO;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_KEY_INFO)
|
|
|
|
typedef struct {
|
|
ASN1_OBJECT *cipher;
|
|
X509_PUBKEY *ephem_key;
|
|
ASN1_OCTET_STRING *eph_iv;
|
|
} GOST_KEY_AGREEMENT_INFO;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_KEY_AGREEMENT_INFO)
|
|
|
|
typedef struct {
|
|
GOST_KEY_INFO *key_info;
|
|
GOST_KEY_AGREEMENT_INFO *key_agreement_info;
|
|
} GOST_KEY_TRANSPORT;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_KEY_TRANSPORT)
|
|
|
|
typedef struct { /* FIXME incomplete */
|
|
GOST_KEY_TRANSPORT *gkt;
|
|
} GOST_CLIENT_KEY_EXCHANGE_PARAMS;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
|
|
typedef struct {
|
|
ASN1_OBJECT *key_params;
|
|
ASN1_OBJECT *hash_params;
|
|
ASN1_OBJECT *cipher_params;
|
|
} GOST_KEY_PARAMS;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_KEY_PARAMS)
|
|
|
|
typedef struct {
|
|
ASN1_OCTET_STRING *iv;
|
|
ASN1_OBJECT *enc_param_set;
|
|
} GOST_CIPHER_PARAMS;
|
|
|
|
DECLARE_ASN1_FUNCTIONS(GOST_CIPHER_PARAMS)
|
|
/*============== Message digest and cipher related structures ==========*/
|
|
/* Structure used as EVP_MD_CTX-md_data.
|
|
* It allows to avoid storing in the md-data pointers to
|
|
* dynamically allocated memory.
|
|
*
|
|
* I cannot invent better way to avoid memory leaks, because
|
|
* openssl insist on invoking Init on Final-ed digests, and there
|
|
* is no reliable way to find out whether pointer in the passed
|
|
* md_data is valid or not.
|
|
* */
|
|
struct ossl_gost_digest_ctx {
|
|
gost_hash_ctx dctx;
|
|
gost_ctx cctx;
|
|
};
|
|
/* EVP_MD structure for GOST R 34.11 */
|
|
extern EVP_MD digest_gost;
|
|
|
|
/* Cipher context used for EVP_CIPHER operation */
|
|
struct ossl_gost_cipher_ctx {
|
|
int paramNID;
|
|
off_t count;
|
|
int key_meshing;
|
|
gost_ctx cctx;
|
|
};
|
|
/* Structure to map parameter NID to S-block */
|
|
struct gost_cipher_info {
|
|
int nid;
|
|
gost_subst_block *sblock;
|
|
int key_meshing;
|
|
};
|
|
#ifdef USE_SSL
|
|
/* Context for MAC */
|
|
struct ossl_gost_imit_ctx {
|
|
gost_ctx cctx;
|
|
unsigned char buffer[8];
|
|
unsigned char partial_block[8];
|
|
off_t count;
|
|
int key_meshing;
|
|
int bytes_left;
|
|
int key_set;
|
|
};
|
|
#endif
|
|
/* Table which maps parameter NID to S-blocks */
|
|
extern struct gost_cipher_info gost_cipher_list[];
|
|
/* Find encryption params from ASN1_OBJECT */
|
|
const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj);
|
|
/* Implementation of GOST 28147-89 cipher in CFB and CNT modes */
|
|
extern EVP_CIPHER cipher_gost;
|
|
extern EVP_CIPHER cipher_gost_cpacnt;
|
|
#ifdef USE_SSL
|
|
#define EVP_MD_FLAG_NEEDS_KEY 0x20
|
|
#define EVP_MD_CTRL_GET_TLS_MAC_KEY_LENGTH (EVP_MD_CTRL_ALG_CTRL+1)
|
|
#define EVP_MD_CTRL_SET_KEY (EVP_MD_CTRL_ALG_CTRL+2)
|
|
/* Ciphers and MACs specific for GOST TLS draft */
|
|
extern EVP_CIPHER cipher_gost_vizircfb;
|
|
extern EVP_CIPHER cipher_gost_cpacnt;
|
|
extern EVP_MD imit_gost_vizir;
|
|
extern EVP_MD imit_gost_cpa;
|
|
#endif
|
|
/* EVP_PKEY_METHOD key encryption callbacks */
|
|
/* From gost94_keyx.c */
|
|
int pkey_GOST94cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
|
|
int pkey_GOST94cc_encrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * key,size_t key_len);
|
|
|
|
int pkey_GOST94cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
|
|
int pkey_GOST94cc_decrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * in,size_t in_len);
|
|
/* From gost2001_keyx.c */
|
|
int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
|
|
int pkey_GOST01cc_encrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * key,size_t key_len);
|
|
|
|
int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
|
|
int pkey_GOST01cc_decrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * in,size_t in_len);
|
|
|
|
/* Internal functions to make error processing happy */
|
|
int decrypt_cryptocom_key(unsigned char *sess_key,int max_key_len,
|
|
const unsigned char *crypted_key,int crypted_key_len, gost_ctx *ctx);
|
|
int encrypt_cryptocom_key(const unsigned char *sess_key,int key_len,
|
|
unsigned char *crypted_key, gost_ctx *ctx);
|
|
/* Internal functions for signature algorithms */
|
|
int fill_GOST94_params(DSA *dsa,int nid);
|
|
int fill_GOST2001_params(EC_KEY *eckey, int nid);
|
|
int gost_sign_keygen(DSA *dsa) ;
|
|
int gost2001_keygen(EC_KEY *ec) ;
|
|
|
|
DSA_SIG *gost_do_sign(const unsigned char *dgst,int dlen, DSA *dsa) ;
|
|
DSA_SIG *gost2001_do_sign(const unsigned char *dgst,int dlen, EC_KEY *eckey);
|
|
|
|
int gost_do_verify(const unsigned char *dgst, int dgst_len,
|
|
DSA_SIG *sig, DSA *dsa) ;
|
|
int gost2001_do_verify(const unsigned char *dgst,int dgst_len,
|
|
DSA_SIG *sig, EC_KEY *ec);
|
|
int gost2001_compute_public(EC_KEY *ec) ;
|
|
int gost94_compute_public(DSA *dsa) ;
|
|
/*============== miscellaneous functions============================= */
|
|
/* from gost_sign.c */
|
|
/* Convert GOST R 34.11 hash sum to bignum according to standard */
|
|
BIGNUM *hashsum2bn(const unsigned char *dgst) ;
|
|
/* Store bignum in byte array of given length, prepending by zeros
|
|
* if nesseccary */
|
|
int store_bignum(BIGNUM *bn, unsigned char *buf,int len);
|
|
/* Read bignum, which can have few MSB all-zeros from buffer*/
|
|
BIGNUM *getbnfrombuf(const unsigned char *buf,size_t len);
|
|
/* Pack GOST R 34.10 signature according to CryptoCom rules */
|
|
int pack_sign_cc(DSA_SIG *s,int order,unsigned char *sig, size_t *siglen);
|
|
/* Pack GOST R 34.10 signature according to CryptoPro rules */
|
|
int pack_sign_cp(DSA_SIG *s,int order,unsigned char *sig, size_t *siglen);
|
|
/* Unpack GOST R 34.10 signature according to CryptoCom rules */
|
|
DSA_SIG *unpack_cc_signature(const unsigned char *sig,size_t siglen) ;
|
|
/* Unpack GOST R 34.10 signature according to CryptoPro rules */
|
|
DSA_SIG *unpack_cp_signature(const unsigned char *sig,size_t siglen) ;
|
|
/* from ameth.c */
|
|
/* Get private key as BIGNUM from both R 34.10-94 and R 34.10-2001 keys*/
|
|
BIGNUM* gost_get_priv_key(const EVP_PKEY *pkey) ;
|
|
/* Find NID by GOST 94 parameters */
|
|
int gost94_nid_by_params(DSA *p) ;
|
|
|
|
|
|
#endif
|