X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fa_sign.c;h=2542f750a21ce0bf79b25543f0a714da1da182a5;hp=e9c41e3d2087b764c82daff43910b012d89df9aa;hb=41a15c4f0f2535591ba9f258cf76119f86477c43;hpb=51ca375e7e640c6f1441d74abcda731ef7306d0c diff --git a/crypto/asn1/a_sign.c b/crypto/asn1/a_sign.c index e9c41e3d20..2542f750a2 100644 --- a/crypto/asn1/a_sign.c +++ b/crypto/asn1/a_sign.c @@ -55,6 +55,59 @@ * 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 #include @@ -71,15 +124,18 @@ #include #include -int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, - ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey, - const EVP_MD *type) +#ifndef NO_ASN1_OLD + +int ASN1_sign(int (*i2d)(void *, unsigned char **), 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) @@ -87,7 +143,14 @@ int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, else a=algor2; if (a == NULL) continue; - if ( (a->parameter == NULL) || + 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); @@ -108,9 +171,9 @@ int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, } } inl=i2d(data,NULL); - buf_in=(unsigned char *)Malloc((unsigned int)inl); + buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl); outll=outl=EVP_PKEY_size(pkey); - buf_out=(unsigned char *)Malloc((unsigned int)outl); + buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl); if ((buf_in == NULL) || (buf_out == NULL)) { outl=0; @@ -120,7 +183,91 @@ int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, p=buf_in; i2d(data,&p); - EVP_SignInit(&ctx,type); + 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_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=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_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)) @@ -129,20 +276,20 @@ int ASN1_sign(int (*i2d)(), X509_ALGOR *algor1, X509_ALGOR *algor2, ASN1err(ASN1_F_ASN1_SIGN,ERR_R_EVP_LIB); goto err; } - if (signature->data != NULL) Free(signature->data); + if (signature->data != NULL) OPENSSL_free(signature->data); signature->data=buf_out; buf_out=NULL; signature->length=outl; - /* In the interests of compatability, I'll make sure that + /* 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: - memset(&ctx,0,sizeof(ctx)); + EVP_MD_CTX_cleanup(&ctx); if (buf_in != NULL) - { memset((char *)buf_in,0,(unsigned int)inl); Free(buf_in); } + { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); } if (buf_out != NULL) - { memset((char *)buf_out,0,outll); Free(buf_out); } + { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); } return(outl); }