mirror of https://github.com/openssl/openssl.git
Add pss/x931 files.
This commit is contained in:
Dr. Stephen Henson
parent
499fca2db3
commit
429168e7ee
|
|
@ -0,0 +1,220 @@
|
||||||
|
/* rsa_pss.c */
|
||||||
|
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
|
||||||
|
* project 2005.
|
||||||
|
*/
|
||||||
|
/* ====================================================================
|
||||||
|
* Copyright (c) 2005 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
|
||||||
|
* licensing@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 "cryptlib.h"
|
||||||
|
#include <openssl/bn.h>
|
||||||
|
#include <openssl/rsa.h>
|
||||||
|
#include <openssl/evp.h>
|
||||||
|
#include <openssl/rand.h>
|
||||||
|
#include <openssl/sha.h>
|
||||||
|
|
||||||
|
const static unsigned char zeroes[] = {0,0,0,0,0,0,0,0};
|
||||||
|
|
||||||
|
int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
|
||||||
|
const EVP_MD *Hash, const unsigned char *EM, int sLen)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
int ret = 0;
|
||||||
|
int hLen, maskedDBLen, emBits, emLen;
|
||||||
|
const unsigned char *H;
|
||||||
|
unsigned char *DB = NULL;
|
||||||
|
EVP_MD_CTX ctx;
|
||||||
|
unsigned char H_[EVP_MAX_MD_SIZE];
|
||||||
|
emBits = BN_num_bits(rsa->n) - 1;
|
||||||
|
emLen = (emBits + 7) >> 3;
|
||||||
|
hLen = EVP_MD_size(Hash);
|
||||||
|
if (emLen < (hLen + sLen + 2))
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, RSA_R_DATA_TOO_LARGE);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
if (EM[emLen - 1] != 0xbc)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, RSA_R_LAST_OCTET_INVALID);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
if (EM[0] & (0xFF << (emBits & 0x7)))
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, RSA_R_FIRST_OCTET_INVALID);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
maskedDBLen = emLen - hLen - 1;
|
||||||
|
H = EM + maskedDBLen;
|
||||||
|
DB = OPENSSL_malloc(maskedDBLen);
|
||||||
|
if (!DB)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, ERR_R_MALLOC_FAILURE);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
PKCS1_MGF1(DB, maskedDBLen, H, hLen, Hash);
|
||||||
|
for (i = 0; i < maskedDBLen; i++)
|
||||||
|
DB[i] ^= EM[i];
|
||||||
|
DB[0] &= 0xFF >> (8 - (emBits & 0x7));
|
||||||
|
for (i = 0; i < (emLen - hLen - sLen - 2); i++)
|
||||||
|
{
|
||||||
|
if (DB[i] != 0)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS,
|
||||||
|
RSA_R_ZERO_CHECK_FAILED);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (DB[i] != 0x1)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, RSA_R_ONE_CHECK_FAILED);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
EVP_MD_CTX_init(&ctx);
|
||||||
|
EVP_DigestInit_ex(&ctx, Hash, NULL);
|
||||||
|
EVP_DigestUpdate(&ctx, zeroes, sizeof zeroes);
|
||||||
|
EVP_DigestUpdate(&ctx, mHash, hLen);
|
||||||
|
if (sLen)
|
||||||
|
EVP_DigestUpdate(&ctx, DB + maskedDBLen - sLen, sLen);
|
||||||
|
EVP_DigestFinal(&ctx, H_, NULL);
|
||||||
|
EVP_MD_CTX_cleanup(&ctx);
|
||||||
|
if (memcmp(H_, H, hLen))
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS, RSA_R_BAD_SIGNATURE);
|
||||||
|
ret = 0;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
ret = 1;
|
||||||
|
|
||||||
|
err:
|
||||||
|
if (DB)
|
||||||
|
OPENSSL_free(DB);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
|
||||||
|
const unsigned char *mHash,
|
||||||
|
const EVP_MD *Hash, int sLen)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
int ret = 0;
|
||||||
|
int hLen, maskedDBLen, emBits, emLen;
|
||||||
|
unsigned char *H, *salt = NULL, *p;
|
||||||
|
EVP_MD_CTX ctx;
|
||||||
|
emBits = BN_num_bits(rsa->n) - 1;
|
||||||
|
emLen = (emBits + 7) >> 3;
|
||||||
|
hLen = EVP_MD_size(Hash);
|
||||||
|
if (sLen < 0)
|
||||||
|
sLen = 0;
|
||||||
|
if (emLen < (hLen + sLen + 2))
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_PSS,
|
||||||
|
RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
if (sLen > 0)
|
||||||
|
{
|
||||||
|
salt = OPENSSL_malloc(sLen);
|
||||||
|
if (!salt)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_PSS,
|
||||||
|
ERR_R_MALLOC_FAILURE);
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
if (!RAND_bytes(salt, sLen))
|
||||||
|
goto err;
|
||||||
|
}
|
||||||
|
maskedDBLen = emLen - hLen - 1;
|
||||||
|
H = EM + maskedDBLen;
|
||||||
|
EVP_MD_CTX_init(&ctx);
|
||||||
|
EVP_DigestInit_ex(&ctx, Hash, NULL);
|
||||||
|
EVP_DigestUpdate(&ctx, zeroes, sizeof zeroes);
|
||||||
|
EVP_DigestUpdate(&ctx, mHash, hLen);
|
||||||
|
if (sLen)
|
||||||
|
EVP_DigestUpdate(&ctx, salt, sLen);
|
||||||
|
EVP_DigestFinal(&ctx, H, NULL);
|
||||||
|
EVP_MD_CTX_cleanup(&ctx);
|
||||||
|
|
||||||
|
/* Generate dbMask in place then perform XOR on it */
|
||||||
|
PKCS1_MGF1(EM, maskedDBLen, H, hLen, Hash);
|
||||||
|
|
||||||
|
p = EM;
|
||||||
|
|
||||||
|
/* Initial PS XORs with all zeroes which is a NOP so just update
|
||||||
|
* pointer. Note from a test above this value is guaranteed to
|
||||||
|
* be non-negative.
|
||||||
|
*/
|
||||||
|
p += emLen - sLen - hLen - 2;
|
||||||
|
*p++ ^= 0x1;
|
||||||
|
if (sLen > 0)
|
||||||
|
{
|
||||||
|
for (i = 0; i < sLen; i++)
|
||||||
|
*p++ ^= salt[i];
|
||||||
|
}
|
||||||
|
EM[0] &= 0xFF >> (8 - (emBits & 0x7));
|
||||||
|
|
||||||
|
/* H is already in place so just set final 0xbc */
|
||||||
|
|
||||||
|
EM[emLen - 1] = 0xbc;
|
||||||
|
|
||||||
|
ret = 1;
|
||||||
|
|
||||||
|
err:
|
||||||
|
if (salt)
|
||||||
|
OPENSSL_free(salt);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,175 @@
|
||||||
|
/* rsa_x931.c */
|
||||||
|
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
|
||||||
|
* project 2005.
|
||||||
|
*/
|
||||||
|
/* ====================================================================
|
||||||
|
* Copyright (c) 2005 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
|
||||||
|
* licensing@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 "cryptlib.h"
|
||||||
|
#include <openssl/bn.h>
|
||||||
|
#include <openssl/rsa.h>
|
||||||
|
#include <openssl/rand.h>
|
||||||
|
#include <openssl/objects.h>
|
||||||
|
|
||||||
|
int RSA_padding_add_X931(unsigned char *to, int tlen,
|
||||||
|
const unsigned char *from, int flen)
|
||||||
|
{
|
||||||
|
int j;
|
||||||
|
unsigned char *p;
|
||||||
|
|
||||||
|
/* Absolute minimum amount of padding is 1 header nibble, 1 padding
|
||||||
|
* nibble and 2 trailer bytes: but 1 hash if is already in 'from'.
|
||||||
|
*/
|
||||||
|
|
||||||
|
j = tlen - flen - 2;
|
||||||
|
|
||||||
|
if (j < 0)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_ADD_X931,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
p=(unsigned char *)to;
|
||||||
|
|
||||||
|
/* If no padding start and end nibbles are in one byte */
|
||||||
|
if (j == 0)
|
||||||
|
*p++ = 0x6A;
|
||||||
|
else
|
||||||
|
{
|
||||||
|
*p++ = 0x6B;
|
||||||
|
if (j > 1)
|
||||||
|
{
|
||||||
|
memset(p, 0xBB, j - 1);
|
||||||
|
p += j - 1;
|
||||||
|
}
|
||||||
|
*p++ = 0xBA;
|
||||||
|
}
|
||||||
|
memcpy(p,from,(unsigned int)flen);
|
||||||
|
p += flen;
|
||||||
|
*p = 0xCC;
|
||||||
|
return(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
int RSA_padding_check_X931(unsigned char *to, int tlen,
|
||||||
|
const unsigned char *from, int flen, int num)
|
||||||
|
{
|
||||||
|
int i,j;
|
||||||
|
const unsigned char *p;
|
||||||
|
|
||||||
|
p=from;
|
||||||
|
if ((num != flen) || ((*p != 0x6A) && (*p != 0x6B)))
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_CHECK_X931,RSA_R_INVALID_HEADER);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
j=flen-3;
|
||||||
|
if (*p++ == 0x6B)
|
||||||
|
{
|
||||||
|
for (i = 0; i < j; i++)
|
||||||
|
{
|
||||||
|
unsigned char c = *p++;
|
||||||
|
if (c == 0xBA)
|
||||||
|
break;
|
||||||
|
if (c != 0xBB)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_CHECK_X931,
|
||||||
|
RSA_R_INVALID_PADDING);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
j -= i;
|
||||||
|
|
||||||
|
if (i == 0)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_CHECK_X931, RSA_R_INVALID_PADDING);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (p[j] != 0xCC)
|
||||||
|
{
|
||||||
|
RSAerr(RSA_F_RSA_PADDING_CHECK_X931, RSA_R_INVALID_TRAILER);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy(to,p,(unsigned int)j);
|
||||||
|
|
||||||
|
return(j);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Translate between X931 hash ids and NIDs */
|
||||||
|
|
||||||
|
int RSA_X931_hash_id(int nid)
|
||||||
|
{
|
||||||
|
switch (nid)
|
||||||
|
{
|
||||||
|
case NID_sha1:
|
||||||
|
return 0x33;
|
||||||
|
|
||||||
|
case NID_sha256:
|
||||||
|
return 0x34;
|
||||||
|
|
||||||
|
case NID_sha384:
|
||||||
|
return 0x36;
|
||||||
|
|
||||||
|
case NID_sha512:
|
||||||
|
return 0x35;
|
||||||
|
|
||||||
|
}
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
Loading…
Reference in New Issue