diff options
Diffstat (limited to 'openssl/crypto/rsa/rsa_sign.c')
| -rw-r--r-- | openssl/crypto/rsa/rsa_sign.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/openssl/crypto/rsa/rsa_sign.c b/openssl/crypto/rsa/rsa_sign.c deleted file mode 100644 index 0be4ec7f..00000000 --- a/openssl/crypto/rsa/rsa_sign.c +++ /dev/null @@ -1,285 +0,0 @@ -/* crypto/rsa/rsa_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.] - */ - -#include <stdio.h> -#include "cryptlib.h" -#include <openssl/bn.h> -#include <openssl/rsa.h> -#include <openssl/objects.h> -#include <openssl/x509.h> -#include "rsa_locl.h" - -/* Size of an SSL signature: MD5+SHA1 */ -#define SSL_SIG_LENGTH 36 - -int RSA_sign(int type, const unsigned char *m, unsigned int m_len, - unsigned char *sigret, unsigned int *siglen, RSA *rsa) - { - X509_SIG sig; - ASN1_TYPE parameter; - int i,j,ret=1; - unsigned char *p, *tmps = NULL; - const unsigned char *s = NULL; - X509_ALGOR algor; - ASN1_OCTET_STRING digest; - if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_sign) - { - return rsa->meth->rsa_sign(type, m, m_len, - sigret, siglen, rsa); - } - /* Special case: SSL signature, just check the length */ - if(type == NID_md5_sha1) { - if(m_len != SSL_SIG_LENGTH) { - RSAerr(RSA_F_RSA_SIGN,RSA_R_INVALID_MESSAGE_LENGTH); - return(0); - } - i = SSL_SIG_LENGTH; - s = m; - } else { - sig.algor= &algor; - sig.algor->algorithm=OBJ_nid2obj(type); - if (sig.algor->algorithm == NULL) - { - RSAerr(RSA_F_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE); - return(0); - } - if (sig.algor->algorithm->length == 0) - { - RSAerr(RSA_F_RSA_SIGN,RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD); - return(0); - } - parameter.type=V_ASN1_NULL; - parameter.value.ptr=NULL; - sig.algor->parameter= ¶meter; - - sig.digest= &digest; - sig.digest->data=(unsigned char *)m; /* TMP UGLY CAST */ - sig.digest->length=m_len; - - i=i2d_X509_SIG(&sig,NULL); - } - j=RSA_size(rsa); - if (i > (j-RSA_PKCS1_PADDING_SIZE)) - { - RSAerr(RSA_F_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY); - return(0); - } - if(type != NID_md5_sha1) { - tmps=(unsigned char *)OPENSSL_malloc((unsigned int)j+1); - if (tmps == NULL) - { - RSAerr(RSA_F_RSA_SIGN,ERR_R_MALLOC_FAILURE); - return(0); - } - p=tmps; - i2d_X509_SIG(&sig,&p); - s=tmps; - } - i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING); - if (i <= 0) - ret=0; - else - *siglen=i; - - if(type != NID_md5_sha1) { - OPENSSL_cleanse(tmps,(unsigned int)j+1); - OPENSSL_free(tmps); - } - return(ret); - } - -int int_rsa_verify(int dtype, const unsigned char *m, - unsigned int m_len, - unsigned char *rm, size_t *prm_len, - const unsigned char *sigbuf, size_t siglen, - RSA *rsa) - { - int i,ret=0,sigtype; - unsigned char *s; - X509_SIG *sig=NULL; - - if (siglen != (unsigned int)RSA_size(rsa)) - { - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH); - return(0); - } - - if((dtype == NID_md5_sha1) && rm) - { - i = RSA_public_decrypt((int)siglen, - sigbuf,rm,rsa,RSA_PKCS1_PADDING); - if (i <= 0) - return 0; - *prm_len = i; - return 1; - } - - s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen); - if (s == NULL) - { - RSAerr(RSA_F_INT_RSA_VERIFY,ERR_R_MALLOC_FAILURE); - goto err; - } - if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) { - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH); - goto err; - } - i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING); - - if (i <= 0) goto err; - - /* Special case: SSL signature */ - if(dtype == NID_md5_sha1) { - if((i != SSL_SIG_LENGTH) || memcmp(s, m, SSL_SIG_LENGTH)) - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE); - else ret = 1; - } else { - const unsigned char *p=s; - sig=d2i_X509_SIG(NULL,&p,(long)i); - - if (sig == NULL) goto err; - - /* Excess data can be used to create forgeries */ - if(p != s+i) - { - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE); - goto err; - } - - /* Parameters to the signature algorithm can also be used to - create forgeries */ - if(sig->algor->parameter - && ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL) - { - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE); - goto err; - } - - sigtype=OBJ_obj2nid(sig->algor->algorithm); - - - #ifdef RSA_DEBUG - /* put a backward compatibility flag in EAY */ - fprintf(stderr,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype), - OBJ_nid2ln(dtype)); - #endif - if (sigtype != dtype) - { - if (((dtype == NID_md5) && - (sigtype == NID_md5WithRSAEncryption)) || - ((dtype == NID_md2) && - (sigtype == NID_md2WithRSAEncryption))) - { - /* ok, we will let it through */ -#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) - fprintf(stderr,"signature has problems, re-make with post SSLeay045\n"); -#endif - } - else - { - RSAerr(RSA_F_INT_RSA_VERIFY, - RSA_R_ALGORITHM_MISMATCH); - goto err; - } - } - if (rm) - { - const EVP_MD *md; - md = EVP_get_digestbynid(dtype); - if (md && (EVP_MD_size(md) != sig->digest->length)) - RSAerr(RSA_F_INT_RSA_VERIFY, - RSA_R_INVALID_DIGEST_LENGTH); - else - { - memcpy(rm, sig->digest->data, - sig->digest->length); - *prm_len = sig->digest->length; - ret = 1; - } - } - else if (((unsigned int)sig->digest->length != m_len) || - (memcmp(m,sig->digest->data,m_len) != 0)) - { - RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE); - } - else - ret=1; - } -err: - if (sig != NULL) X509_SIG_free(sig); - if (s != NULL) - { - OPENSSL_cleanse(s,(unsigned int)siglen); - OPENSSL_free(s); - } - return(ret); - } - -int RSA_verify(int dtype, const unsigned char *m, unsigned int m_len, - const unsigned char *sigbuf, unsigned int siglen, - RSA *rsa) - { - - if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify) - { - return rsa->meth->rsa_verify(dtype, m, m_len, - sigbuf, siglen, rsa); - } - - return int_rsa_verify(dtype, m, m_len, NULL, NULL, sigbuf, siglen, rsa); - } |