diff options
Diffstat (limited to 'openssl/crypto/asn1/a_sign.c')
| -rw-r--r-- | openssl/crypto/asn1/a_sign.c | 111 |
1 files changed, 73 insertions, 38 deletions
diff --git a/openssl/crypto/asn1/a_sign.c b/openssl/crypto/asn1/a_sign.c index ff63bfc7b..7b4a193d6 100644 --- a/openssl/crypto/asn1/a_sign.c +++ b/openssl/crypto/asn1/a_sign.c @@ -184,9 +184,9 @@ int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2, p=buf_in; i2d(data,&p); - EVP_SignInit_ex(&ctx,type, NULL); - EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl); - if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out, + if (!EVP_SignInit_ex(&ctx,type, NULL) + || !EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl) + || !EVP_SignFinal(&ctx,(unsigned char *)buf_out, (unsigned int *)&outl,pkey)) { outl=0; @@ -218,65 +218,100 @@ int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2, const EVP_MD *type) { EVP_MD_CTX ctx; + EVP_MD_CTX_init(&ctx); + if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey)) + { + EVP_MD_CTX_cleanup(&ctx); + return 0; + } + return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx); + } + + +int ASN1_item_sign_ctx(const ASN1_ITEM *it, + X509_ALGOR *algor1, X509_ALGOR *algor2, + ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx) + { + const EVP_MD *type; + EVP_PKEY *pkey; unsigned char *buf_in=NULL,*buf_out=NULL; - int inl=0,outl=0,outll=0; + size_t inl=0,outl=0,outll=0; int signid, paramtype; + int rv; + + type = EVP_MD_CTX_md(ctx); + pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx); - if (type == NULL) + if (!type || !pkey) { - int def_nid; - if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0) - type = EVP_get_digestbynid(def_nid); + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED); + return 0; } - if (type == NULL) + if (pkey->ameth->item_sign) { - ASN1err(ASN1_F_ASN1_ITEM_SIGN, ASN1_R_NO_DEFAULT_DIGEST); - return 0; + rv = pkey->ameth->item_sign(ctx, it, asn, algor1, algor2, + signature); + if (rv == 1) + outl = signature->length; + /* Return value meanings: + * <=0: error. + * 1: method does everything. + * 2: carry on as normal. + * 3: ASN1 method sets algorithm identifiers: just sign. + */ + if (rv <= 0) + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB); + if (rv <= 1) + goto err; } + else + rv = 2; - if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) + if (rv == 2) { - if (!pkey->ameth || - !OBJ_find_sigid_by_algs(&signid, EVP_MD_nid(type), - pkey->ameth->pkey_id)) + if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) { - ASN1err(ASN1_F_ASN1_ITEM_SIGN, - ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED); - return 0; + if (!pkey->ameth || + !OBJ_find_sigid_by_algs(&signid, + EVP_MD_nid(type), + pkey->ameth->pkey_id)) + { + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, + ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED); + return 0; + } } - } - else - signid = type->pkey_type; + else + signid = type->pkey_type; - if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL) - paramtype = V_ASN1_NULL; - else - paramtype = V_ASN1_UNDEF; + if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL) + paramtype = V_ASN1_NULL; + else + paramtype = V_ASN1_UNDEF; - if (algor1) - X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL); - if (algor2) - X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL); + if (algor1) + X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL); + if (algor2) + X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL); + + } - EVP_MD_CTX_init(&ctx); inl=ASN1_item_i2d(asn,&buf_in, it); outll=outl=EVP_PKEY_size(pkey); - buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl); + buf_out=OPENSSL_malloc((unsigned int)outl); if ((buf_in == NULL) || (buf_out == NULL)) { outl=0; - ASN1err(ASN1_F_ASN1_ITEM_SIGN,ERR_R_MALLOC_FAILURE); + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_MALLOC_FAILURE); goto err; } - EVP_SignInit_ex(&ctx,type, NULL); - EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl); - if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out, - (unsigned int *)&outl,pkey)) + if (!EVP_DigestSignUpdate(ctx, buf_in, inl) + || !EVP_DigestSignFinal(ctx, buf_out, &outl)) { outl=0; - ASN1err(ASN1_F_ASN1_ITEM_SIGN,ERR_R_EVP_LIB); + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_EVP_LIB); goto err; } if (signature->data != NULL) OPENSSL_free(signature->data); @@ -289,7 +324,7 @@ int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2, signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); signature->flags|=ASN1_STRING_FLAG_BITS_LEFT; err: - EVP_MD_CTX_cleanup(&ctx); + EVP_MD_CTX_cleanup(ctx); if (buf_in != NULL) { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); } if (buf_out != NULL) |