mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
ed576acdf5
For functions that exist in 1.1.1 provide a simple aliases via #define. Fixes #15236 Functions with OSSL_DECODER_, OSSL_ENCODER_, OSSL_STORE_LOADER_, EVP_KEYEXCH_, EVP_KEM_, EVP_ASYM_CIPHER_, EVP_SIGNATURE_, EVP_KEYMGMT_, EVP_RAND_, EVP_MAC_, EVP_KDF_, EVP_PKEY_, EVP_MD_, and EVP_CIPHER_ prefixes are renamed. Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15405)
397 lines
11 KiB
C
397 lines
11 KiB
C
/*
|
|
* Copyright 2005-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/*
|
|
* RSA low level APIs are deprecated for public use, but still ok for
|
|
* internal use.
|
|
*/
|
|
#include "internal/deprecated.h"
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/bn.h>
|
|
#include <openssl/rsa.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/rand.h>
|
|
#include <openssl/sha.h>
|
|
#include "rsa_local.h"
|
|
|
|
static const unsigned char zeroes[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
|
|
#if defined(_MSC_VER) && defined(_ARM_)
|
|
# pragma optimize("g", off)
|
|
#endif
|
|
|
|
int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
|
|
const EVP_MD *Hash, const unsigned char *EM,
|
|
int sLen)
|
|
{
|
|
return RSA_verify_PKCS1_PSS_mgf1(rsa, mHash, Hash, NULL, EM, sLen);
|
|
}
|
|
|
|
int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
|
|
const EVP_MD *Hash, const EVP_MD *mgf1Hash,
|
|
const unsigned char *EM, int sLen)
|
|
{
|
|
int i;
|
|
int ret = 0;
|
|
int hLen, maskedDBLen, MSBits, emLen;
|
|
const unsigned char *H;
|
|
unsigned char *DB = NULL;
|
|
EVP_MD_CTX *ctx = EVP_MD_CTX_new();
|
|
unsigned char H_[EVP_MAX_MD_SIZE];
|
|
|
|
if (ctx == NULL)
|
|
goto err;
|
|
|
|
if (mgf1Hash == NULL)
|
|
mgf1Hash = Hash;
|
|
|
|
hLen = EVP_MD_get_size(Hash);
|
|
if (hLen < 0)
|
|
goto err;
|
|
/*-
|
|
* Negative sLen has special meanings:
|
|
* -1 sLen == hLen
|
|
* -2 salt length is autorecovered from signature
|
|
* -3 salt length is maximized
|
|
* -N reserved
|
|
*/
|
|
if (sLen == RSA_PSS_SALTLEN_DIGEST) {
|
|
sLen = hLen;
|
|
} else if (sLen < RSA_PSS_SALTLEN_MAX) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_SLEN_CHECK_FAILED);
|
|
goto err;
|
|
}
|
|
|
|
MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
|
|
emLen = RSA_size(rsa);
|
|
if (EM[0] & (0xFF << MSBits)) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_FIRST_OCTET_INVALID);
|
|
goto err;
|
|
}
|
|
if (MSBits == 0) {
|
|
EM++;
|
|
emLen--;
|
|
}
|
|
if (emLen < hLen + 2) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE);
|
|
goto err;
|
|
}
|
|
if (sLen == RSA_PSS_SALTLEN_MAX) {
|
|
sLen = emLen - hLen - 2;
|
|
} else if (sLen > emLen - hLen - 2) { /* sLen can be small negative */
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE);
|
|
goto err;
|
|
}
|
|
if (EM[emLen - 1] != 0xbc) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_LAST_OCTET_INVALID);
|
|
goto err;
|
|
}
|
|
maskedDBLen = emLen - hLen - 1;
|
|
H = EM + maskedDBLen;
|
|
DB = OPENSSL_malloc(maskedDBLen);
|
|
if (DB == NULL) {
|
|
ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
if (PKCS1_MGF1(DB, maskedDBLen, H, hLen, mgf1Hash) < 0)
|
|
goto err;
|
|
for (i = 0; i < maskedDBLen; i++)
|
|
DB[i] ^= EM[i];
|
|
if (MSBits)
|
|
DB[0] &= 0xFF >> (8 - MSBits);
|
|
for (i = 0; DB[i] == 0 && i < (maskedDBLen - 1); i++) ;
|
|
if (DB[i++] != 0x1) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_SLEN_RECOVERY_FAILED);
|
|
goto err;
|
|
}
|
|
if (sLen != RSA_PSS_SALTLEN_AUTO && (maskedDBLen - i) != sLen) {
|
|
ERR_raise_data(ERR_LIB_RSA, RSA_R_SLEN_CHECK_FAILED,
|
|
"expected: %d retrieved: %d", sLen,
|
|
maskedDBLen - i);
|
|
goto err;
|
|
}
|
|
if (!EVP_DigestInit_ex(ctx, Hash, NULL)
|
|
|| !EVP_DigestUpdate(ctx, zeroes, sizeof(zeroes))
|
|
|| !EVP_DigestUpdate(ctx, mHash, hLen))
|
|
goto err;
|
|
if (maskedDBLen - i) {
|
|
if (!EVP_DigestUpdate(ctx, DB + i, maskedDBLen - i))
|
|
goto err;
|
|
}
|
|
if (!EVP_DigestFinal_ex(ctx, H_, NULL))
|
|
goto err;
|
|
if (memcmp(H_, H, hLen)) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_BAD_SIGNATURE);
|
|
ret = 0;
|
|
} else {
|
|
ret = 1;
|
|
}
|
|
|
|
err:
|
|
OPENSSL_free(DB);
|
|
EVP_MD_CTX_free(ctx);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
|
|
const unsigned char *mHash,
|
|
const EVP_MD *Hash, int sLen)
|
|
{
|
|
return RSA_padding_add_PKCS1_PSS_mgf1(rsa, EM, mHash, Hash, NULL, sLen);
|
|
}
|
|
|
|
int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
|
|
const unsigned char *mHash,
|
|
const EVP_MD *Hash, const EVP_MD *mgf1Hash,
|
|
int sLen)
|
|
{
|
|
int i;
|
|
int ret = 0;
|
|
int hLen, maskedDBLen, MSBits, emLen;
|
|
unsigned char *H, *salt = NULL, *p;
|
|
EVP_MD_CTX *ctx = NULL;
|
|
|
|
if (mgf1Hash == NULL)
|
|
mgf1Hash = Hash;
|
|
|
|
hLen = EVP_MD_get_size(Hash);
|
|
if (hLen < 0)
|
|
goto err;
|
|
/*-
|
|
* Negative sLen has special meanings:
|
|
* -1 sLen == hLen
|
|
* -2 salt length is maximized
|
|
* -3 same as above (on signing)
|
|
* -N reserved
|
|
*/
|
|
if (sLen == RSA_PSS_SALTLEN_DIGEST) {
|
|
sLen = hLen;
|
|
} else if (sLen == RSA_PSS_SALTLEN_MAX_SIGN) {
|
|
sLen = RSA_PSS_SALTLEN_MAX;
|
|
} else if (sLen < RSA_PSS_SALTLEN_MAX) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_SLEN_CHECK_FAILED);
|
|
goto err;
|
|
}
|
|
|
|
MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
|
|
emLen = RSA_size(rsa);
|
|
if (MSBits == 0) {
|
|
*EM++ = 0;
|
|
emLen--;
|
|
}
|
|
if (emLen < hLen + 2) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
|
|
goto err;
|
|
}
|
|
if (sLen == RSA_PSS_SALTLEN_MAX) {
|
|
sLen = emLen - hLen - 2;
|
|
} else if (sLen > emLen - hLen - 2) {
|
|
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
|
|
goto err;
|
|
}
|
|
if (sLen > 0) {
|
|
salt = OPENSSL_malloc(sLen);
|
|
if (salt == NULL) {
|
|
ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
if (RAND_bytes_ex(rsa->libctx, salt, sLen, 0) <= 0)
|
|
goto err;
|
|
}
|
|
maskedDBLen = emLen - hLen - 1;
|
|
H = EM + maskedDBLen;
|
|
ctx = EVP_MD_CTX_new();
|
|
if (ctx == NULL)
|
|
goto err;
|
|
if (!EVP_DigestInit_ex(ctx, Hash, NULL)
|
|
|| !EVP_DigestUpdate(ctx, zeroes, sizeof(zeroes))
|
|
|| !EVP_DigestUpdate(ctx, mHash, hLen))
|
|
goto err;
|
|
if (sLen && !EVP_DigestUpdate(ctx, salt, sLen))
|
|
goto err;
|
|
if (!EVP_DigestFinal_ex(ctx, H, NULL))
|
|
goto err;
|
|
|
|
/* Generate dbMask in place then perform XOR on it */
|
|
if (PKCS1_MGF1(EM, maskedDBLen, H, hLen, mgf1Hash))
|
|
goto err;
|
|
|
|
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];
|
|
}
|
|
if (MSBits)
|
|
EM[0] &= 0xFF >> (8 - MSBits);
|
|
|
|
/* H is already in place so just set final 0xbc */
|
|
|
|
EM[emLen - 1] = 0xbc;
|
|
|
|
ret = 1;
|
|
|
|
err:
|
|
EVP_MD_CTX_free(ctx);
|
|
OPENSSL_clear_free(salt, (size_t)sLen); /* salt != NULL implies sLen > 0 */
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
/*
|
|
* The defaults for PSS restrictions are defined in RFC 8017, A.2.3 RSASSA-PSS
|
|
* (https://tools.ietf.org/html/rfc8017#appendix-A.2.3):
|
|
*
|
|
* If the default values of the hashAlgorithm, maskGenAlgorithm, and
|
|
* trailerField fields of RSASSA-PSS-params are used, then the algorithm
|
|
* identifier will have the following value:
|
|
*
|
|
* rSASSA-PSS-Default-Identifier RSASSA-AlgorithmIdentifier ::= {
|
|
* algorithm id-RSASSA-PSS,
|
|
* parameters RSASSA-PSS-params : {
|
|
* hashAlgorithm sha1,
|
|
* maskGenAlgorithm mgf1SHA1,
|
|
* saltLength 20,
|
|
* trailerField trailerFieldBC
|
|
* }
|
|
* }
|
|
*
|
|
* RSASSA-AlgorithmIdentifier ::= AlgorithmIdentifier {
|
|
* {PKCS1Algorithms}
|
|
* }
|
|
*/
|
|
static const RSA_PSS_PARAMS_30 default_RSASSA_PSS_params = {
|
|
NID_sha1, /* default hashAlgorithm */
|
|
{
|
|
NID_mgf1, /* default maskGenAlgorithm */
|
|
NID_sha1 /* default MGF1 hash */
|
|
},
|
|
20, /* default saltLength */
|
|
1 /* default trailerField (0xBC) */
|
|
};
|
|
|
|
int ossl_rsa_pss_params_30_set_defaults(RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
*rsa_pss_params = default_RSASSA_PSS_params;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_is_unrestricted(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
static RSA_PSS_PARAMS_30 pss_params_cmp = { 0, };
|
|
|
|
return rsa_pss_params == NULL
|
|
|| memcmp(rsa_pss_params, &pss_params_cmp,
|
|
sizeof(*rsa_pss_params)) == 0;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_copy(RSA_PSS_PARAMS_30 *to,
|
|
const RSA_PSS_PARAMS_30 *from)
|
|
{
|
|
memcpy(to, from, sizeof(*to));
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_set_hashalg(RSA_PSS_PARAMS_30 *rsa_pss_params,
|
|
int hashalg_nid)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
rsa_pss_params->hash_algorithm_nid = hashalg_nid;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_set_maskgenalg(RSA_PSS_PARAMS_30 *rsa_pss_params,
|
|
int maskgenalg_nid)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
rsa_pss_params->mask_gen.algorithm_nid = maskgenalg_nid;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_set_maskgenhashalg(RSA_PSS_PARAMS_30 *rsa_pss_params,
|
|
int maskgenhashalg_nid)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
rsa_pss_params->mask_gen.hash_algorithm_nid = maskgenhashalg_nid;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_set_saltlen(RSA_PSS_PARAMS_30 *rsa_pss_params,
|
|
int saltlen)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
rsa_pss_params->salt_len = saltlen;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_set_trailerfield(RSA_PSS_PARAMS_30 *rsa_pss_params,
|
|
int trailerfield)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return 0;
|
|
rsa_pss_params->trailer_field = trailerfield;
|
|
return 1;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_hashalg(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return default_RSASSA_PSS_params.hash_algorithm_nid;
|
|
return rsa_pss_params->hash_algorithm_nid;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_maskgenalg(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return default_RSASSA_PSS_params.mask_gen.algorithm_nid;
|
|
return rsa_pss_params->mask_gen.algorithm_nid;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_maskgenhashalg(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return default_RSASSA_PSS_params.hash_algorithm_nid;
|
|
return rsa_pss_params->mask_gen.hash_algorithm_nid;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_saltlen(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return default_RSASSA_PSS_params.salt_len;
|
|
return rsa_pss_params->salt_len;
|
|
}
|
|
|
|
int ossl_rsa_pss_params_30_trailerfield(const RSA_PSS_PARAMS_30 *rsa_pss_params)
|
|
{
|
|
if (rsa_pss_params == NULL)
|
|
return default_RSASSA_PSS_params.trailer_field;
|
|
return rsa_pss_params->trailer_field;
|
|
}
|
|
|
|
#if defined(_MSC_VER)
|
|
# pragma optimize("",on)
|
|
#endif
|