You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
331 lines
12 KiB
331 lines
12 KiB
/* crypto/asn1/a_sign.c */ |
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
|
* All rights reserved. |
|
* |
|
* 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: |
|
* 1. Redistributions of source code must retain the copyright |
|
* 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 the |
|
* documentation and/or other materials provided with the distribution. |
|
* 3. All advertising materials mentioning features or use of this software |
|
* must display the following acknowledgement: |
|
* "This product includes cryptographic software written by |
|
* 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 |
|
* 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 |
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
* 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 |
|
* [including the GNU Public Licence.] |
|
*/ |
|
/* ==================================================================== |
|
* Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* |
|
* 1. Redistributions of source code must retain the above copyright |
|
* 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 |
|
* the documentation and/or other materials provided with the |
|
* distribution. |
|
* |
|
* 3. All advertising materials mentioning features or use of this |
|
* software must display the following acknowledgment: |
|
* "This product includes software developed by the OpenSSL Project |
|
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
|
* |
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
|
* endorse or promote products derived from this software without |
|
* prior written permission. For written permission, please contact |
|
* openssl-core@openssl.org. |
|
* |
|
* 5. Products derived from this software may not be called "OpenSSL" |
|
* nor may "OpenSSL" appear in their names without prior written |
|
* permission of the OpenSSL Project. |
|
* |
|
* 6. Redistributions of any form whatsoever must retain the following |
|
* acknowledgment: |
|
* "This product includes software developed by the OpenSSL Project |
|
* for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
|
* STRICT 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. |
|
* ==================================================================== |
|
* |
|
* This product includes cryptographic software written by Eric Young |
|
* (eay@cryptsoft.com). This product includes software written by Tim |
|
* Hudson (tjh@cryptsoft.com). |
|
* |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include <time.h> |
|
|
|
#include "cryptlib.h" |
|
|
|
#ifndef NO_SYS_TYPES_H |
|
# include <sys/types.h> |
|
#endif |
|
|
|
#include <openssl/bn.h> |
|
#include <openssl/evp.h> |
|
#include <openssl/x509.h> |
|
#include <openssl/objects.h> |
|
#include <openssl/buffer.h> |
|
#include "asn1_locl.h" |
|
|
|
#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; |
|
|
|
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); |
|
} |
|
|
|
#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_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; |
|
|
|
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 (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 (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); |
|
|
|
} |
|
|
|
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); |
|
}
|
|
|