diff options
Diffstat (limited to 'openssl/crypto/rsa/rsa_saos.c')
| -rw-r--r-- | openssl/crypto/rsa/rsa_saos.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/openssl/crypto/rsa/rsa_saos.c b/openssl/crypto/rsa/rsa_saos.c new file mode 100644 index 00000000..f98e0a80 --- /dev/null +++ b/openssl/crypto/rsa/rsa_saos.c @@ -0,0 +1,150 @@ +/* crypto/rsa/rsa_saos.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> + +int RSA_sign_ASN1_OCTET_STRING(int type, + const unsigned char *m, unsigned int m_len, + unsigned char *sigret, unsigned int *siglen, RSA *rsa) + { + ASN1_OCTET_STRING sig; + int i,j,ret=1; + unsigned char *p,*s; + + sig.type=V_ASN1_OCTET_STRING; + sig.length=m_len; + sig.data=(unsigned char *)m; + + i=i2d_ASN1_OCTET_STRING(&sig,NULL); + j=RSA_size(rsa); + if (i > (j-RSA_PKCS1_PADDING_SIZE)) + { + RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY); + return(0); + } + s=(unsigned char *)OPENSSL_malloc((unsigned int)j+1); + if (s == NULL) + { + RSAerr(RSA_F_RSA_SIGN_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE); + return(0); + } + p=s; + i2d_ASN1_OCTET_STRING(&sig,&p); + i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING); + if (i <= 0) + ret=0; + else + *siglen=i; + + OPENSSL_cleanse(s,(unsigned int)j+1); + OPENSSL_free(s); + return(ret); + } + +int RSA_verify_ASN1_OCTET_STRING(int dtype, + const unsigned char *m, + unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, + RSA *rsa) + { + int i,ret=0; + unsigned char *s; + const unsigned char *p; + ASN1_OCTET_STRING *sig=NULL; + + if (siglen != (unsigned int)RSA_size(rsa)) + { + RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_WRONG_SIGNATURE_LENGTH); + return(0); + } + + s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen); + if (s == NULL) + { + RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE); + goto err; + } + i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING); + + if (i <= 0) goto err; + + p=s; + sig=d2i_ASN1_OCTET_STRING(NULL,&p,(long)i); + if (sig == NULL) goto err; + + if ( ((unsigned int)sig->length != m_len) || + (memcmp(m,sig->data,m_len) != 0)) + { + RSAerr(RSA_F_RSA_VERIFY_ASN1_OCTET_STRING,RSA_R_BAD_SIGNATURE); + } + else + ret=1; +err: + if (sig != NULL) M_ASN1_OCTET_STRING_free(sig); + if (s != NULL) + { + OPENSSL_cleanse(s,(unsigned int)siglen); + OPENSSL_free(s); + } + return(ret); + } + |