786dd2c22c
Many signature types define the digest and public key type by a single OID such as ecdsa_with_sha256. Some types (RSA-PSS for example) use a single OID to indicate the signature scheme and additional parameters are encoded in the AlgorithmIdentifier. Add an X509_SIG_INFO structure to contain details about the signature type: specifically the digest algorithm, public key algorithm, security bits and various flags. This supports both existing algorithms and more complex types. Add accessors for the structure and a special case that retrieves signature information from a certificate. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/3301)
100 lines
4.1 KiB
C
100 lines
4.1 KiB
C
/*
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* Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Internal ASN1 structures and functions: not for application use */
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/* ASN1 public key method structure */
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struct evp_pkey_asn1_method_st {
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int pkey_id;
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int pkey_base_id;
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unsigned long pkey_flags;
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char *pem_str;
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char *info;
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int (*pub_decode) (EVP_PKEY *pk, X509_PUBKEY *pub);
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int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
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int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
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int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx);
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int (*priv_decode) (EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf);
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int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
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int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx);
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int (*pkey_size) (const EVP_PKEY *pk);
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int (*pkey_bits) (const EVP_PKEY *pk);
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int (*pkey_security_bits) (const EVP_PKEY *pk);
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int (*param_decode) (EVP_PKEY *pkey,
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const unsigned char **pder, int derlen);
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int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
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int (*param_missing) (const EVP_PKEY *pk);
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int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
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int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
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int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx);
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int (*sig_print) (BIO *out,
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const X509_ALGOR *sigalg, const ASN1_STRING *sig,
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int indent, ASN1_PCTX *pctx);
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void (*pkey_free) (EVP_PKEY *pkey);
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int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
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/* Legacy functions for old PEM */
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int (*old_priv_decode) (EVP_PKEY *pkey,
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const unsigned char **pder, int derlen);
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int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
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/* Custom ASN1 signature verification */
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int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
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X509_ALGOR *a, ASN1_BIT_STRING *sig, EVP_PKEY *pkey);
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int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
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X509_ALGOR *alg1, X509_ALGOR *alg2,
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ASN1_BIT_STRING *sig);
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int (*siginf_set) (X509_SIG_INFO *siginf, const X509_ALGOR *alg,
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const ASN1_STRING *sig);
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} /* EVP_PKEY_ASN1_METHOD */ ;
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DEFINE_STACK_OF_CONST(EVP_PKEY_ASN1_METHOD)
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extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[5];
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extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD ecx25519_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2];
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extern const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD siphash_asn1_meth;
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/*
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* These are used internally in the ASN1_OBJECT to keep track of whether the
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* names and data need to be free()ed
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*/
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# define ASN1_OBJECT_FLAG_DYNAMIC 0x01/* internal use */
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# define ASN1_OBJECT_FLAG_CRITICAL 0x02/* critical x509v3 object id */
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# define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04/* internal use */
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# define ASN1_OBJECT_FLAG_DYNAMIC_DATA 0x08/* internal use */
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struct asn1_object_st {
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const char *sn, *ln;
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int nid;
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int length;
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const unsigned char *data; /* data remains const after init */
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int flags; /* Should we free this one */
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};
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/* ASN1 print context structure */
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struct asn1_pctx_st {
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unsigned long flags;
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unsigned long nm_flags;
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unsigned long cert_flags;
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unsigned long oid_flags;
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unsigned long str_flags;
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} /* ASN1_PCTX */ ;
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int asn1_valid_host(const ASN1_STRING *host);
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