diff options
Diffstat (limited to 'openssl/crypto/asn1/a_sign.c')
| -rw-r--r-- | openssl/crypto/asn1/a_sign.c | 386 |
1 files changed, 192 insertions, 194 deletions
diff --git a/openssl/crypto/asn1/a_sign.c b/openssl/crypto/asn1/a_sign.c index 7b4a193d6..51c6a0c34 100644 --- a/openssl/crypto/asn1/a_sign.c +++ b/openssl/crypto/asn1/a_sign.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,7 +49,7 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -63,7 +63,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -128,206 +128,204 @@ #ifndef NO_ASN1_OLD int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2, - ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey, - const EVP_MD *type) - { - EVP_MD_CTX ctx; - unsigned char *p,*buf_in=NULL,*buf_out=NULL; - int i,inl=0,outl=0,outll=0; - X509_ALGOR *a; + ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey, + const EVP_MD *type) +{ + EVP_MD_CTX ctx; + unsigned char *p, *buf_in = NULL, *buf_out = NULL; + int i, inl = 0, outl = 0, outll = 0; + X509_ALGOR *a; - EVP_MD_CTX_init(&ctx); - for (i=0; i<2; i++) - { - if (i == 0) - a=algor1; - else - a=algor2; - if (a == NULL) continue; - if (type->pkey_type == NID_dsaWithSHA1) - { - /* special case: RFC 2459 tells us to omit 'parameters' - * with id-dsa-with-sha1 */ - ASN1_TYPE_free(a->parameter); - a->parameter = NULL; - } - else if ((a->parameter == NULL) || - (a->parameter->type != V_ASN1_NULL)) - { - ASN1_TYPE_free(a->parameter); - if ((a->parameter=ASN1_TYPE_new()) == NULL) goto err; - a->parameter->type=V_ASN1_NULL; - } - ASN1_OBJECT_free(a->algorithm); - a->algorithm=OBJ_nid2obj(type->pkey_type); - if (a->algorithm == NULL) - { - ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE); - goto err; - } - if (a->algorithm->length == 0) - { - ASN1err(ASN1_F_ASN1_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD); - goto err; - } - } - inl=i2d(data,NULL); - buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl); - outll=outl=EVP_PKEY_size(pkey); - buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl); - if ((buf_in == NULL) || (buf_out == NULL)) - { - outl=0; - ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE); - goto err; - } - p=buf_in; + EVP_MD_CTX_init(&ctx); + for (i = 0; i < 2; i++) { + if (i == 0) + a = algor1; + else + a = algor2; + if (a == NULL) + continue; + if (type->pkey_type == NID_dsaWithSHA1) { + /* + * special case: RFC 2459 tells us to omit 'parameters' with + * id-dsa-with-sha1 + */ + ASN1_TYPE_free(a->parameter); + a->parameter = NULL; + } else if ((a->parameter == NULL) || + (a->parameter->type != V_ASN1_NULL)) { + ASN1_TYPE_free(a->parameter); + if ((a->parameter = ASN1_TYPE_new()) == NULL) + goto err; + a->parameter->type = V_ASN1_NULL; + } + ASN1_OBJECT_free(a->algorithm); + a->algorithm = OBJ_nid2obj(type->pkey_type); + if (a->algorithm == NULL) { + ASN1err(ASN1_F_ASN1_SIGN, ASN1_R_UNKNOWN_OBJECT_TYPE); + goto err; + } + if (a->algorithm->length == 0) { + ASN1err(ASN1_F_ASN1_SIGN, + ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD); + goto err; + } + } + inl = i2d(data, NULL); + buf_in = (unsigned char *)OPENSSL_malloc((unsigned int)inl); + outll = outl = EVP_PKEY_size(pkey); + buf_out = (unsigned char *)OPENSSL_malloc((unsigned int)outl); + if ((buf_in == NULL) || (buf_out == NULL)) { + outl = 0; + ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE); + goto err; + } + p = buf_in; - i2d(data,&p); - 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; - ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB); - goto err; - } - if (signature->data != NULL) OPENSSL_free(signature->data); - signature->data=buf_out; - buf_out=NULL; - signature->length=outl; - /* In the interests of compatibility, I'll make sure that - * the bit string has a 'not-used bits' value of 0 - */ - signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); - signature->flags|=ASN1_STRING_FLAG_BITS_LEFT; -err: - 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) - { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); } - return(outl); - } + i2d(data, &p); + 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; + ASN1err(ASN1_F_ASN1_SIGN, ERR_R_EVP_LIB); + goto err; + } + if (signature->data != NULL) + OPENSSL_free(signature->data); + signature->data = buf_out; + buf_out = NULL; + signature->length = outl; + /* + * In the interests of compatibility, I'll make sure that the bit string + * has a 'not-used bits' value of 0 + */ + signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); + signature->flags |= ASN1_STRING_FLAG_BITS_LEFT; + err: + 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) { + OPENSSL_cleanse((char *)buf_out, outll); + OPENSSL_free(buf_out); + } + return (outl); +} #endif -int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2, - ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey, - 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(const ASN1_ITEM *it, X509_ALGOR *algor1, + X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn, + EVP_PKEY *pkey, 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; - size_t inl=0,outl=0,outll=0; - int signid, paramtype; - int rv; + 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; + 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); + type = EVP_MD_CTX_md(ctx); + pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx); - if (!type || !pkey) - { - ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED); - return 0; - } + if (!type || !pkey) { + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED); + return 0; + } - if (pkey->ameth->item_sign) - { - 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 (pkey->ameth->item_sign) { + 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 (rv == 2) - { - if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) - { - 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; + if (rv == 2) { + if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) { + 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; - 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); - } + } - inl=ASN1_item_i2d(asn,&buf_in, it); - outll=outl=EVP_PKEY_size(pkey); - buf_out=OPENSSL_malloc((unsigned int)outl); - if ((buf_in == NULL) || (buf_out == NULL)) - { - outl=0; - ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_MALLOC_FAILURE); - goto err; - } + inl = ASN1_item_i2d(asn, &buf_in, it); + outll = outl = EVP_PKEY_size(pkey); + buf_out = OPENSSL_malloc((unsigned int)outl); + if ((buf_in == NULL) || (buf_out == NULL)) { + outl = 0; + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_MALLOC_FAILURE); + goto err; + } - if (!EVP_DigestSignUpdate(ctx, buf_in, inl) - || !EVP_DigestSignFinal(ctx, buf_out, &outl)) - { - outl=0; - ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,ERR_R_EVP_LIB); - goto err; - } - if (signature->data != NULL) OPENSSL_free(signature->data); - signature->data=buf_out; - buf_out=NULL; - signature->length=outl; - /* In the interests of compatibility, I'll make sure that - * the bit string has a 'not-used bits' value of 0 - */ - signature->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); - signature->flags|=ASN1_STRING_FLAG_BITS_LEFT; -err: - 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) - { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); } - return(outl); - } + if (!EVP_DigestSignUpdate(ctx, buf_in, inl) + || !EVP_DigestSignFinal(ctx, buf_out, &outl)) { + outl = 0; + ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB); + goto err; + } + if (signature->data != NULL) + OPENSSL_free(signature->data); + signature->data = buf_out; + buf_out = NULL; + signature->length = outl; + /* + * In the interests of compatibility, I'll make sure that the bit string + * has a 'not-used bits' value of 0 + */ + signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); + signature->flags |= ASN1_STRING_FLAG_BITS_LEFT; + err: + 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) { + OPENSSL_cleanse((char *)buf_out, outll); + OPENSSL_free(buf_out); + } + return (outl); +} |