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- Added PKCS#5 PBKDF2 key derivation function

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This commit is contained in:
Paul Bakker 2012-08-23 13:03:18 +00:00
parent 535e97dbab
commit f518b16f97
12 changed files with 372 additions and 2 deletions
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1
ChangeLog
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@ -23,6 +23,7 @@ Features
* Added Thumb assembly optimizations
* Added DEFLATE compression support as per RFC3749 (requires zlib)
* Added blowfish algorithm (Generic and cipher layer)
* Added PKCS#5 PBKDF2 key derivation function
Changes
* Removed redundant POLARSSL_DEBUG_MSG define

13
include/polarssl/config.h
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@ -582,6 +582,19 @@
*/
#define POLARSSL_PADLOCK_C
/**
* \def POLARSSL_PBKDF2_C
*
* Enable PKCS#5 PBKDF2 key derivation function
*
* Module: library/pbkdf2.c
*
* Requires: POLARSSL_MD_C
*
* This module adds support for the PKCS#5 PBKDF2 key derivation function.
#define POLARSSL_PBKDF2_C
*/
/**
* \def POLARSSL_PEM_C
*

1
include/polarssl/error.h
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@ -67,6 +67,7 @@
* SHA1 1 0x0076-0x0076
* SHA2 1 0x0078-0x0078
* SHA4 1 0x007A-0x007A
* PBKDF2 1 0x007C-0x007C
*
* High-level module nr (3 bits - 0x1...-0x8...)
* Name ID Nr of Errors

73
include/polarssl/pbkdf2.h Normal file
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@ -0,0 +1,73 @@
/**
* \file pbkdf2.h
*
* \brief Password-Based Key Derivation Function 2 (from PKCS#5)
*
* \author Mathias Olsson <mathias@kompetensum.com>
*
* Copyright (C) 2006-2012, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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.
*/
#ifndef POLARSSL_PBKDF2_H
#define POLARSSL_PBKDF2_H
#include <string.h>
#include "md.h"
#define POLARSSL_ERR_PBKDF2_BAD_INPUT_DATA -0x007C /**< Bad input parameters to function. */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief PKCS#5 PBKDF2 using HMAC
*
* \param ctx Generic HMAC context
* \param password Password to use when generating key
* \param plen Length of password
* \param salt Salt to use when generating key
* \param slen Length of salt
* \param iteration_count Iteration count
* \param key_length Length of generated key
* \param output Generated key. Must be at least as big as key_length
*
* \returns 0 on success, or a PolarSSL error code if verification fails.
*/
int pbkdf2_hmac( md_context_t *ctx, const unsigned char *password,
size_t plen, const unsigned char *salt, size_t slen,
unsigned int iteration_count,
unsigned long key_length, unsigned char *output );
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if the test failed
*/
int pbkdf2_self_test( int verbose );
#ifdef __cplusplus
}
#endif
#endif /* pbkdf2.h */

1
library/CMakeLists.txt
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@ -28,6 +28,7 @@ set(src
md5.c
net.c
padlock.c
pbkdf2.c
pem.c
pkcs11.c
rsa.c

3
library/Makefile
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@ -41,7 +41,8 @@ OBJS= aes.o arc4.o asn1parse.o \
error.o gcm.o havege.o \
md.o md_wrap.o md2.o \
md4.o md5.o net.o \
padlock.o pem.o pkcs11.o \
padlock.o pbkdf2.o pem.o \
pkcs11.o \
rsa.o sha1.o sha2.o \
sha4.o ssl_cli.o ssl_srv.o \
ssl_tls.o timing.o version.o \

215
library/pbkdf2.c Normal file
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@ -0,0 +1,215 @@
/**
* \file pbkdf2.c
*
* \brief Password-Based Key Derivation Function 2 (from PKCS#5)
*
* \author Mathias Olsson <mathias@kompetensum.com>
*
* Copyright (C) 2006-2012, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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.
*/
/*
* PBKDF2 is part of PKCS#5
*
* http://tools.ietf.org/html/rfc2898 (Specification)
* http://tools.ietf.org/html/rfc6070 (Test vectors)
*/
#include "polarssl/config.h"
#if defined(POLARSSL_PBKDF2_C)
#include "polarssl/pbkdf2.h"
int pbkdf2_hmac( md_context_t *ctx, const unsigned char *password, size_t plen,
const unsigned char *salt, size_t slen,
unsigned int iteration_count,
unsigned long key_length, unsigned char *output )
{
int ret, j;
unsigned int i;
unsigned char md1[POLARSSL_MD_MAX_SIZE];
unsigned char work[POLARSSL_MD_MAX_SIZE];
unsigned char md_size = md_get_size( ctx->md_info );
size_t use_len;
unsigned char *out_p = output;
unsigned char counter[4];
memset( counter, 0, 4 );
counter[3] = 1;
if( iteration_count > 0xFFFFFFFF )
return( POLARSSL_ERR_PBKDF2_BAD_INPUT_DATA );
while( key_length )
{
// U1 ends up in work
//
if( ( ret = md_hmac_starts( ctx, password, plen ) ) != 0 )
return( ret );
if( ( ret = md_hmac_update( ctx, salt, slen ) ) != 0 )
return( ret );
if( ( ret = md_hmac_update( ctx, counter, 4 ) ) != 0 )
return( ret );
if( ( ret = md_hmac_finish( ctx, work ) ) != 0 )
return( ret );
memcpy( md1, work, md_size );
for ( i = 1; i < iteration_count; i++ )
{
// U2 ends up in md1
//
if( ( ret = md_hmac_starts( ctx, password, plen ) ) != 0 )
return( ret );
if( ( ret = md_hmac_update( ctx, md1, md_size ) ) != 0 )
return( ret );
if( ( ret = md_hmac_finish( ctx, md1 ) ) != 0 )
return( ret );
// U1 xor U2
//
for( j = 0; j < md_size; j++ )
work[j] ^= md1[j];
}
use_len = ( key_length < md_size ) ? key_length : md_size;
memcpy( out_p, work, use_len );
key_length -= use_len;
out_p += use_len;
for( i = 4; i > 0; i-- )
if( ++counter[i - 1] != 0 )
break;
}
return( 0 );
}
#if defined(POLARSSL_SELF_TEST)
#include <stdio.h>
#define MAX_TESTS 6
size_t plen[MAX_TESTS] =
{ 8, 8, 8, 8, 24, 9 };
unsigned char password[MAX_TESTS][32] =
{
"password",
"password",
"password",
"password",
"passwordPASSWORDpassword",
"pass\0word",
};
size_t slen[MAX_TESTS] =
{ 4, 4, 4, 4, 36, 5 };
unsigned char salt[MAX_TESTS][40] =
{
"salt",
"salt",
"salt",
"salt",
"saltSALTsaltSALTsaltSALTsaltSALTsalt",
"sa\0lt",
};
unsigned long it_cnt[MAX_TESTS] =
{ 1, 2, 4096, 16777216, 4096, 4096 };
unsigned long key_len[MAX_TESTS] =
{ 20, 20, 20, 20, 25, 16 };
unsigned char result_key[MAX_TESTS][32] =
{
{ 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71,
0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06,
0x2f, 0xe0, 0x37, 0xa6 },
{ 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c,
0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0,
0xd8, 0xde, 0x89, 0x57 },
{ 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a,
0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0,
0x65, 0xa4, 0x29, 0xc1 },
{ 0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4,
0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c,
0x26, 0x34, 0xe9, 0x84 },
{ 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b,
0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a,
0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70,
0x38 },
{ 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 },
};
int pbkdf2_self_test( int verbose )
{
md_context_t sha1_ctx;
const md_info_t *info_sha1;
int ret, i;
unsigned char key[64];
info_sha1 = md_info_from_type( POLARSSL_MD_SHA1 );
if( info_sha1 == NULL )
return( 1 );
if( ( ret = md_init_ctx( &sha1_ctx, info_sha1 ) ) != 0 )
return( 1 );
for( i = 0; i < MAX_TESTS; i++ )
{
printf( " PBKDF2 (SHA1) #%d: ", i );
ret = pbkdf2_hmac( &sha1_ctx, password[i], plen[i], salt[i], slen[i],
it_cnt[i], key_len[i], key );
if( ret != 0 ||
memcmp( result_key[i], key, key_len[i] ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( 1 );
}
if( verbose != 0 )
printf( "passed\n" );
}
printf( "\n" );
return( 0 );
}
#endif /* POLARSSL_SELF_TEST */
#endif /* POLARSSL_PBKDF2_C */

6
programs/test/selftest.c
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@ -49,6 +49,7 @@
#include "polarssl/rsa.h"
#include "polarssl/x509.h"
#include "polarssl/xtea.h"
#include "polarssl/pbkdf2.h"
int main( int argc, char *argv[] )
{
@ -149,6 +150,11 @@ int main( int argc, char *argv[] )
return( ret );
#endif
#if defined(POLARSSL_PBKDF2_C)
if( ( ret = pbkdf2_self_test( v ) ) != 0 )
return( ret );
#endif
#else
printf( " POLARSSL_SELF_TEST not defined.\n" );
#endif

1
tests/CMakeLists.txt
View File

@ -52,6 +52,7 @@ add_test_suite(hmac_shax)
add_test_suite(md)
add_test_suite(mdx)
add_test_suite(mpi)
add_test_suite(pbkdf2)
add_test_suite(pkcs1_v21)
add_test_suite(shax)
add_test_suite(rsa)

7
tests/Makefile
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@ -33,7 +33,8 @@ APPS = test_suite_aes test_suite_arc4 \
test_suite_error test_suite_gcm.decrypt \
test_suite_gcm.decrypt test_suite_hmac_shax \
test_suite_md test_suite_mdx \
test_suite_mpi test_suite_pkcs1_v21 \
test_suite_mpi test_suite_pbkdf2 \
test_suite_pkcs1_v21 \
test_suite_rsa test_suite_shax \
test_suite_x509parse test_suite_x509write \
test_suite_xtea test_suite_version
@ -154,6 +155,10 @@ test_suite_mpi: test_suite_mpi.c ../library/libpolarssl.a
echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@
test_suite_pbkdf2: test_suite_pbkdf2.c ../library/libpolarssl.a
echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@
test_suite_pkcs1_v21: test_suite_pkcs1_v21.c ../library/libpolarssl.a
echo " CC $@.c"
$(CC) $(CFLAGS) $(OFLAGS) $@.c $(LDFLAGS) -o $@

14
tests/suites/test_suite_pbkdf2.data Normal file
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@ -0,0 +1,14 @@
PBKDF2 RFC 6070 Test Vector #1 (SHA1)
pbkdf2_hmac:POLARSSL_MD_SHA1:"70617373776f7264":"73616c74":1:20:"0c60c80f961f0e71f3a9b524af6012062fe037a6"
PBKDF2 RFC 6070 Test Vector #2 (SHA1)
pbkdf2_hmac:POLARSSL_MD_SHA1:"70617373776f7264":"73616c74":2:20:"ea6c014dc72d6f8ccd1ed92ace1d41f0d8de8957"
PBKDF2 RFC 6070 Test Vector #3 (SHA1)
pbkdf2_hmac:POLARSSL_MD_SHA1:"70617373776f7264":"73616c74":4096:20:"4b007901b765489abead49d926f721d065a429c1"
PBKDF2 RFC 6070 Test Vector #5 (SHA1)
pbkdf2_hmac:POLARSSL_MD_SHA1:"70617373776f726450415353574f524470617373776f7264":"73616c7453414c5473616c7453414c5473616c7453414c5473616c7453414c5473616c74":4096:25:"3d2eec4fe41c849b80c8d83662c0e44a8b291a964cf2f07038"
PBKDF2 RFC 6070 Test Vector #6 (SHA1)
pbkdf2_hmac:POLARSSL_MD_SHA1:"7061737300776f7264":"7361006c74":4096:16:"56fa6aa75548099dcc37d7f03425e0c3"

39
tests/suites/test_suite_pbkdf2.function Normal file
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@ -0,0 +1,39 @@
BEGIN_HEADER
#include <polarssl/pbkdf2.h>
END_HEADER
BEGIN_DEPENDENCIES
depends_on:POLARSSL_PBKDF2_C
END_DEPENDENCIES
BEGIN_CASE
pbkdf2_hmac:hash:hex_password_string:hex_salt_string:it_cnt:key_len:result_key_string
{
unsigned char pw_str[100];
unsigned char salt_str[100];
unsigned char dst_str[100];
md_context_t ctx;
const md_info_t *info;
int pw_len, salt_len;
unsigned char key[100];
memset(pw_str, 0x00, 100);
memset(salt_str, 0x00, 100);
memset(dst_str, 0x00, 100);
pw_len = unhexify( pw_str, {hex_password_string} );
salt_len = unhexify( salt_str, {hex_salt_string} );
info = md_info_from_type( {hash} );
TEST_ASSERT( info != NULL );
TEST_ASSERT( md_init_ctx( &ctx, info ) == 0 );
TEST_ASSERT( pbkdf2_hmac( &ctx, pw_str, pw_len, salt_str, salt_len,
{it_cnt}, {key_len}, key ) == 0 );
hexify( dst_str, key, {key_len} );
TEST_ASSERT( strcmp( (char *) dst_str, {result_key_string} ) == 0 );
}
END_CASE