| /* 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 <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| #include <stdio.h> |
| #include <time.h> |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| |
| #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); |
| } |
