diff options
Diffstat (limited to 'crypto/asn1/a_sign.c')
| -rw-r--r-- | crypto/asn1/a_sign.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/crypto/asn1/a_sign.c b/crypto/asn1/a_sign.c new file mode 100644 index 0000000000..2925ce3ad3 --- /dev/null +++ b/crypto/asn1/a_sign.c @@ -0,0 +1,147 @@ +/* crypto/asn1/a_sign.c */ +/* Copyright (C) 1995-1997 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.] + */ + +#include <stdio.h> +#include <time.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include "cryptlib.h" +#include "bn.h" +#include "evp.h" +#include "x509.h" +#include "objects.h" +#include "buffer.h" +#include "pem.h" + +int ASN1_sign(i2d,algor1,algor2,signature,data,pkey,type) +int (*i2d)(); +X509_ALGOR *algor1; +X509_ALGOR *algor2; +ASN1_BIT_STRING *signature; +char *data; +EVP_PKEY *pkey; +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; + + for (i=0; i<2; i++) + { + if (i == 0) + a=algor1; + else + a=algor2; + if (a == NULL) continue; + 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 *)Malloc((unsigned int)inl); + outll=outl=EVP_PKEY_size(pkey); + buf_out=(unsigned char *)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(&ctx,type); + 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) Free((char *)signature->data); + signature->data=buf_out; + buf_out=NULL; + signature->length=outl; + +err: + memset(&ctx,0,sizeof(ctx)); + if (buf_in != NULL) + { memset((char *)buf_in,0,(unsigned int)inl); Free((char *)buf_in); } + if (buf_out != NULL) + { memset((char *)buf_out,0,outll); Free((char *)buf_out); } + return(outl); + } |