a_sign.c
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- /* 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>
- #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);
- 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))
- {
- 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;
- unsigned char *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 ||
- type->pkey_type == NID_ecdsa_with_SHA1)
- {
- /* special case: RFC 3279 tells us to omit 'parameters'
- * with id-dsa-with-sha1 and ecdsa-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_ITEM_SIGN,ASN1_R_UNKNOWN_OBJECT_TYPE);
- goto err;
- }
- if (a->algorithm->length == 0)
- {
- ASN1err(ASN1_F_ASN1_ITEM_SIGN,ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
- goto err;
- }
- }
- inl=ASN1_item_i2d(asn,&buf_in, it);
- 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_ITEM_SIGN,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))
- {
- outl=0;
- ASN1err(ASN1_F_ASN1_ITEM_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);
- }