391 lines
12 KiB
C
391 lines
12 KiB
C
/*
|
|
* PKCS#12 Personal Information Exchange Syntax
|
|
*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
|
|
*
|
|
* This file is provided under the Apache License 2.0, or the
|
|
* GNU General Public License v2.0 or later.
|
|
*
|
|
* **********
|
|
* Apache License 2.0:
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* **********
|
|
*
|
|
* **********
|
|
* GNU General Public License v2.0 or later:
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* **********
|
|
*/
|
|
/*
|
|
* The PKCS #12 Personal Information Exchange Syntax Standard v1.1
|
|
*
|
|
* http://www.rsa.com/rsalabs/pkcs/files/h11301-wp-pkcs-12v1-1-personal-information-exchange-syntax.pdf
|
|
* ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1-1.asn
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PKCS12_C)
|
|
|
|
#include "mbedtls/pkcs12.h"
|
|
#include "mbedtls/asn1.h"
|
|
#include "mbedtls/cipher.h"
|
|
#include "mbedtls/platform_util.h"
|
|
|
|
#include <string.h>
|
|
|
|
#if defined(MBEDTLS_ARC4_C)
|
|
#include "mbedtls/arc4.h"
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_DES_C)
|
|
#include "mbedtls/des.h"
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_ASN1_PARSE_C)
|
|
|
|
static int pkcs12_parse_pbe_params( mbedtls_asn1_buf *params,
|
|
mbedtls_asn1_buf *salt, int *iterations )
|
|
{
|
|
int ret;
|
|
unsigned char **p = ¶ms->p;
|
|
const unsigned char *end = params->p + params->len;
|
|
|
|
/*
|
|
* pkcs-12PbeParams ::= SEQUENCE {
|
|
* salt OCTET STRING,
|
|
* iterations INTEGER
|
|
* }
|
|
*
|
|
*/
|
|
if( params->tag != ( MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) )
|
|
return( MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT +
|
|
MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
|
|
|
|
if( ( ret = mbedtls_asn1_get_tag( p, end, &salt->len, MBEDTLS_ASN1_OCTET_STRING ) ) != 0 )
|
|
return( MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT + ret );
|
|
|
|
salt->p = *p;
|
|
*p += salt->len;
|
|
|
|
if( ( ret = mbedtls_asn1_get_int( p, end, iterations ) ) != 0 )
|
|
return( MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT + ret );
|
|
|
|
if( *p != end )
|
|
return( MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT +
|
|
MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#define PKCS12_MAX_PWDLEN 128
|
|
|
|
static int pkcs12_pbe_derive_key_iv( mbedtls_asn1_buf *pbe_params, mbedtls_md_type_t md_type,
|
|
const unsigned char *pwd, size_t pwdlen,
|
|
unsigned char *key, size_t keylen,
|
|
unsigned char *iv, size_t ivlen )
|
|
{
|
|
int ret, iterations = 0;
|
|
mbedtls_asn1_buf salt;
|
|
size_t i;
|
|
unsigned char unipwd[PKCS12_MAX_PWDLEN * 2 + 2];
|
|
|
|
if( pwdlen > PKCS12_MAX_PWDLEN )
|
|
return( MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA );
|
|
|
|
memset( &salt, 0, sizeof(mbedtls_asn1_buf) );
|
|
memset( &unipwd, 0, sizeof(unipwd) );
|
|
|
|
if( ( ret = pkcs12_parse_pbe_params( pbe_params, &salt,
|
|
&iterations ) ) != 0 )
|
|
return( ret );
|
|
|
|
for( i = 0; i < pwdlen; i++ )
|
|
unipwd[i * 2 + 1] = pwd[i];
|
|
|
|
if( ( ret = mbedtls_pkcs12_derivation( key, keylen, unipwd, pwdlen * 2 + 2,
|
|
salt.p, salt.len, md_type,
|
|
MBEDTLS_PKCS12_DERIVE_KEY, iterations ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
|
|
if( iv == NULL || ivlen == 0 )
|
|
return( 0 );
|
|
|
|
if( ( ret = mbedtls_pkcs12_derivation( iv, ivlen, unipwd, pwdlen * 2 + 2,
|
|
salt.p, salt.len, md_type,
|
|
MBEDTLS_PKCS12_DERIVE_IV, iterations ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
return( 0 );
|
|
}
|
|
|
|
#undef PKCS12_MAX_PWDLEN
|
|
|
|
int mbedtls_pkcs12_pbe_sha1_rc4_128( mbedtls_asn1_buf *pbe_params, int mode,
|
|
const unsigned char *pwd, size_t pwdlen,
|
|
const unsigned char *data, size_t len,
|
|
unsigned char *output )
|
|
{
|
|
#if !defined(MBEDTLS_ARC4_C)
|
|
((void) pbe_params);
|
|
((void) mode);
|
|
((void) pwd);
|
|
((void) pwdlen);
|
|
((void) data);
|
|
((void) len);
|
|
((void) output);
|
|
return( MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE );
|
|
#else
|
|
int ret;
|
|
unsigned char key[16];
|
|
mbedtls_arc4_context ctx;
|
|
((void) mode);
|
|
|
|
mbedtls_arc4_init( &ctx );
|
|
|
|
if( ( ret = pkcs12_pbe_derive_key_iv( pbe_params, MBEDTLS_MD_SHA1,
|
|
pwd, pwdlen,
|
|
key, 16, NULL, 0 ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
|
|
mbedtls_arc4_setup( &ctx, key, 16 );
|
|
if( ( ret = mbedtls_arc4_crypt( &ctx, len, data, output ) ) != 0 )
|
|
goto exit;
|
|
|
|
exit:
|
|
mbedtls_platform_zeroize( key, sizeof( key ) );
|
|
mbedtls_arc4_free( &ctx );
|
|
|
|
return( ret );
|
|
#endif /* MBEDTLS_ARC4_C */
|
|
}
|
|
|
|
int mbedtls_pkcs12_pbe( mbedtls_asn1_buf *pbe_params, int mode,
|
|
mbedtls_cipher_type_t cipher_type, mbedtls_md_type_t md_type,
|
|
const unsigned char *pwd, size_t pwdlen,
|
|
const unsigned char *data, size_t len,
|
|
unsigned char *output )
|
|
{
|
|
int ret, keylen = 0;
|
|
unsigned char key[32];
|
|
unsigned char iv[16];
|
|
const mbedtls_cipher_info_t *cipher_info;
|
|
mbedtls_cipher_context_t cipher_ctx;
|
|
size_t olen = 0;
|
|
|
|
cipher_info = mbedtls_cipher_info_from_type( cipher_type );
|
|
if( cipher_info == NULL )
|
|
return( MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE );
|
|
|
|
keylen = cipher_info->key_bitlen / 8;
|
|
|
|
if( ( ret = pkcs12_pbe_derive_key_iv( pbe_params, md_type, pwd, pwdlen,
|
|
key, keylen,
|
|
iv, cipher_info->iv_size ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
|
|
mbedtls_cipher_init( &cipher_ctx );
|
|
|
|
if( ( ret = mbedtls_cipher_setup( &cipher_ctx, cipher_info ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_cipher_setkey( &cipher_ctx, key, 8 * keylen, (mbedtls_operation_t) mode ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_cipher_set_iv( &cipher_ctx, iv, cipher_info->iv_size ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_cipher_reset( &cipher_ctx ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_cipher_update( &cipher_ctx, data, len,
|
|
output, &olen ) ) != 0 )
|
|
{
|
|
goto exit;
|
|
}
|
|
|
|
if( ( ret = mbedtls_cipher_finish( &cipher_ctx, output + olen, &olen ) ) != 0 )
|
|
ret = MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH;
|
|
|
|
exit:
|
|
mbedtls_platform_zeroize( key, sizeof( key ) );
|
|
mbedtls_platform_zeroize( iv, sizeof( iv ) );
|
|
mbedtls_cipher_free( &cipher_ctx );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
#endif /* MBEDTLS_ASN1_PARSE_C */
|
|
|
|
static void pkcs12_fill_buffer( unsigned char *data, size_t data_len,
|
|
const unsigned char *filler, size_t fill_len )
|
|
{
|
|
unsigned char *p = data;
|
|
size_t use_len;
|
|
|
|
while( data_len > 0 )
|
|
{
|
|
use_len = ( data_len > fill_len ) ? fill_len : data_len;
|
|
memcpy( p, filler, use_len );
|
|
p += use_len;
|
|
data_len -= use_len;
|
|
}
|
|
}
|
|
|
|
int mbedtls_pkcs12_derivation( unsigned char *data, size_t datalen,
|
|
const unsigned char *pwd, size_t pwdlen,
|
|
const unsigned char *salt, size_t saltlen,
|
|
mbedtls_md_type_t md_type, int id, int iterations )
|
|
{
|
|
int ret;
|
|
unsigned int j;
|
|
|
|
unsigned char diversifier[128];
|
|
unsigned char salt_block[128], pwd_block[128], hash_block[128];
|
|
unsigned char hash_output[MBEDTLS_MD_MAX_SIZE];
|
|
unsigned char *p;
|
|
unsigned char c;
|
|
|
|
size_t hlen, use_len, v, i;
|
|
|
|
const mbedtls_md_info_t *md_info;
|
|
mbedtls_md_context_t md_ctx;
|
|
|
|
// This version only allows max of 64 bytes of password or salt
|
|
if( datalen > 128 || pwdlen > 64 || saltlen > 64 )
|
|
return( MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA );
|
|
|
|
md_info = mbedtls_md_info_from_type( md_type );
|
|
if( md_info == NULL )
|
|
return( MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE );
|
|
|
|
mbedtls_md_init( &md_ctx );
|
|
|
|
if( ( ret = mbedtls_md_setup( &md_ctx, md_info, 0 ) ) != 0 )
|
|
return( ret );
|
|
hlen = mbedtls_md_get_size( md_info );
|
|
|
|
if( hlen <= 32 )
|
|
v = 64;
|
|
else
|
|
v = 128;
|
|
|
|
memset( diversifier, (unsigned char) id, v );
|
|
|
|
pkcs12_fill_buffer( salt_block, v, salt, saltlen );
|
|
pkcs12_fill_buffer( pwd_block, v, pwd, pwdlen );
|
|
|
|
p = data;
|
|
while( datalen > 0 )
|
|
{
|
|
// Calculate hash( diversifier || salt_block || pwd_block )
|
|
if( ( ret = mbedtls_md_starts( &md_ctx ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_md_update( &md_ctx, diversifier, v ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_md_update( &md_ctx, salt_block, v ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_md_update( &md_ctx, pwd_block, v ) ) != 0 )
|
|
goto exit;
|
|
|
|
if( ( ret = mbedtls_md_finish( &md_ctx, hash_output ) ) != 0 )
|
|
goto exit;
|
|
|
|
// Perform remaining ( iterations - 1 ) recursive hash calculations
|
|
for( i = 1; i < (size_t) iterations; i++ )
|
|
{
|
|
if( ( ret = mbedtls_md( md_info, hash_output, hlen, hash_output ) ) != 0 )
|
|
goto exit;
|
|
}
|
|
|
|
use_len = ( datalen > hlen ) ? hlen : datalen;
|
|
memcpy( p, hash_output, use_len );
|
|
datalen -= use_len;
|
|
p += use_len;
|
|
|
|
if( datalen == 0 )
|
|
break;
|
|
|
|
// Concatenating copies of hash_output into hash_block (B)
|
|
pkcs12_fill_buffer( hash_block, v, hash_output, hlen );
|
|
|
|
// B += 1
|
|
for( i = v; i > 0; i-- )
|
|
if( ++hash_block[i - 1] != 0 )
|
|
break;
|
|
|
|
// salt_block += B
|
|
c = 0;
|
|
for( i = v; i > 0; i-- )
|
|
{
|
|
j = salt_block[i - 1] + hash_block[i - 1] + c;
|
|
c = (unsigned char) (j >> 8);
|
|
salt_block[i - 1] = j & 0xFF;
|
|
}
|
|
|
|
// pwd_block += B
|
|
c = 0;
|
|
for( i = v; i > 0; i-- )
|
|
{
|
|
j = pwd_block[i - 1] + hash_block[i - 1] + c;
|
|
c = (unsigned char) (j >> 8);
|
|
pwd_block[i - 1] = j & 0xFF;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
exit:
|
|
mbedtls_platform_zeroize( salt_block, sizeof( salt_block ) );
|
|
mbedtls_platform_zeroize( pwd_block, sizeof( pwd_block ) );
|
|
mbedtls_platform_zeroize( hash_block, sizeof( hash_block ) );
|
|
mbedtls_platform_zeroize( hash_output, sizeof( hash_output ) );
|
|
|
|
mbedtls_md_free( &md_ctx );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
#endif /* MBEDTLS_PKCS12_C */
|