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crypto: add support for PBKDF2 algorithm

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The LUKS data format includes use of PBKDF2 (Password-Based
Key Derivation Function). The Nettle library can provide
an implementation of this, but we don't want code directly
depending on a specific crypto library backend. Introduce
a new include/crypto/pbkdf.h header which defines a QEMU
API for invoking PBKDK2. The initial implementations are
backed by nettle & gcrypt, which are commonly available
with distros shipping GNUTLS.

The test suite data is taken from the cryptsetup codebase
under the LGPLv2.1+ license. This merely aims to verify
that whatever backend we provide for this function in QEMU
will comply with the spec.

Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-10-14 13:14:04 +01:00
parent b917da4cbd
commit 37788f253a
10 changed files with 853 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
configure vendored
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@ -309,6 +309,7 @@ gnutls_hash=""
gnutls_rnd=""
nettle=""
gcrypt=""
gcrypt_kdf="no"
vte=""
virglrenderer=""
tpm="yes"
@ -2302,6 +2303,19 @@ if test "$gcrypt" != "no"; then
if test -z "$nettle"; then
nettle="no"
fi
cat > $TMPC << EOF
#include <gcrypt.h>
int main(void) {
gcry_kdf_derive(NULL, 0, GCRY_KDF_PBKDF2,
GCRY_MD_SHA256,
NULL, 0, 0, 0, NULL);
return 0;
}
EOF
if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
gcrypt_kdf=yes
fi
else
if test "$gcrypt" = "yes"; then
feature_not_found "gcrypt" "Install gcrypt devel"
@ -4726,6 +4740,7 @@ echo "GNUTLS support $gnutls"
echo "GNUTLS hash $gnutls_hash"
echo "GNUTLS rnd $gnutls_rnd"
echo "libgcrypt $gcrypt"
echo "libgcrypt kdf $gcrypt_kdf"
if test "$nettle" = "yes"; then
echo "nettle $nettle ($nettle_version)"
else
@ -5108,6 +5123,9 @@ if test "$gnutls_rnd" = "yes" ; then
fi
if test "$gcrypt" = "yes" ; then
echo "CONFIG_GCRYPT=y" >> $config_host_mak
if test "$gcrypt_kdf" = "yes" ; then
echo "CONFIG_GCRYPT_KDF=y" >> $config_host_mak
fi
fi
if test "$nettle" = "yes" ; then
echo "CONFIG_NETTLE=y" >> $config_host_mak

4
crypto/Makefile.objs
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@ -10,8 +10,12 @@ crypto-obj-y += tlssession.o
crypto-obj-y += secret.o
crypto-obj-$(CONFIG_GCRYPT) += random-gcrypt.o
crypto-obj-$(if $(CONFIG_GCRYPT),n,$(CONFIG_GNUTLS_RND)) += random-gnutls.o
crypto-obj-y += pbkdf.o
crypto-obj-$(CONFIG_NETTLE) += pbkdf-nettle.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(CONFIG_GCRYPT_KDF)) += pbkdf-gcrypt.o
# Let the userspace emulators avoid linking gnutls/etc
crypto-aes-obj-y = aes.o
stub-obj-y += random-stub.o
stub-obj-y += pbkdf-stub.o

68
crypto/pbkdf-gcrypt.c Normal file
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@ -0,0 +1,68 @@
/*
* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "crypto/pbkdf.h"
#include "gcrypt.h"
bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash)
{
switch (hash) {
case QCRYPTO_HASH_ALG_MD5:
case QCRYPTO_HASH_ALG_SHA1:
case QCRYPTO_HASH_ALG_SHA256:
return true;
default:
return false;
}
}
int qcrypto_pbkdf2(QCryptoHashAlgorithm hash,
const uint8_t *key, size_t nkey,
const uint8_t *salt, size_t nsalt,
unsigned int iterations,
uint8_t *out, size_t nout,
Error **errp)
{
static const int hash_map[QCRYPTO_HASH_ALG__MAX] = {
[QCRYPTO_HASH_ALG_MD5] = GCRY_MD_MD5,
[QCRYPTO_HASH_ALG_SHA1] = GCRY_MD_SHA1,
[QCRYPTO_HASH_ALG_SHA256] = GCRY_MD_SHA256,
};
int ret;
if (hash >= G_N_ELEMENTS(hash_map) ||
hash_map[hash] == GCRY_MD_NONE) {
error_setg(errp, "Unexpected hash algorithm %d", hash);
return -1;
}
ret = gcry_kdf_derive(key, nkey, GCRY_KDF_PBKDF2,
hash_map[hash],
salt, nsalt, iterations,
nout, out);
if (ret != 0) {
error_setg(errp, "Cannot derive password: %s",
gcry_strerror(ret));
return -1;
}
return 0;
}

65
crypto/pbkdf-nettle.c Normal file
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@ -0,0 +1,65 @@
/*
* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "crypto/pbkdf.h"
#include "nettle/pbkdf2.h"
bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash)
{
switch (hash) {
case QCRYPTO_HASH_ALG_SHA1:
case QCRYPTO_HASH_ALG_SHA256:
return true;
default:
return false;
}
}
int qcrypto_pbkdf2(QCryptoHashAlgorithm hash,
const uint8_t *key, size_t nkey,
const uint8_t *salt, size_t nsalt,
unsigned int iterations,
uint8_t *out, size_t nout,
Error **errp)
{
switch (hash) {
case QCRYPTO_HASH_ALG_SHA1:
pbkdf2_hmac_sha1(nkey, key,
iterations,
nsalt, salt,
nout, out);
break;
case QCRYPTO_HASH_ALG_SHA256:
pbkdf2_hmac_sha256(nkey, key,
iterations,
nsalt, salt,
nout, out);
break;
default:
error_setg_errno(errp, ENOSYS,
"PBKDF does not support hash algorithm %d", hash);
return -1;
}
return 0;
}

42
crypto/pbkdf-stub.c Normal file
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@ -0,0 +1,42 @@
/*
* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "crypto/pbkdf.h"
bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash G_GNUC_UNUSED)
{
return false;
}
int qcrypto_pbkdf2(QCryptoHashAlgorithm hash G_GNUC_UNUSED,
const uint8_t *key G_GNUC_UNUSED,
size_t nkey G_GNUC_UNUSED,
const uint8_t *salt G_GNUC_UNUSED,
size_t nsalt G_GNUC_UNUSED,
unsigned int iterations G_GNUC_UNUSED,
uint8_t *out G_GNUC_UNUSED,
size_t nout G_GNUC_UNUSED,
Error **errp)
{
error_setg_errno(errp, ENOSYS,
"No crypto library supporting PBKDF in this build");
return -1;
}

109
crypto/pbkdf.c Normal file
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@ -0,0 +1,109 @@
/*
* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "crypto/pbkdf.h"
#ifndef _WIN32
#include <sys/resource.h>
#endif
static int qcrypto_pbkdf2_get_thread_cpu(unsigned long long *val_ms,
Error **errp)
{
#ifdef _WIN32
FILETIME creation_time, exit_time, kernel_time, user_time;
ULARGE_INTEGER thread_time;
if (!GetThreadTimes(GetCurrentThread(), &creation_time, &exit_time,
&kernel_time, &user_time)) {
error_setg(errp, "Unable to get thread CPU usage");
return -1;
}
thread_time.LowPart = user_time.dwLowDateTime;
thread_time.HighPart = user_time.dwHighDateTime;
/* QuadPart is units of 100ns and we want ms as unit */
*val_ms = thread_time.QuadPart / 10000ll;
return 0;
#elif defined(RUSAGE_THREAD)
struct rusage ru;
if (getrusage(RUSAGE_THREAD, &ru) < 0) {
error_setg_errno(errp, errno, "Unable to get thread CPU usage");
return -1;
}
*val_ms = ((ru.ru_utime.tv_sec * 1000ll) +
(ru.ru_utime.tv_usec / 1000));
return 0;
#else
*val_ms = 0;
error_setg(errp, "Unable to calculate thread CPU usage on this platform");
return -1;
#endif
}
int qcrypto_pbkdf2_count_iters(QCryptoHashAlgorithm hash,
const uint8_t *key, size_t nkey,
const uint8_t *salt, size_t nsalt,
Error **errp)
{
uint8_t out[32];
long long int iterations = (1 << 15);
unsigned long long delta_ms, start_ms, end_ms;
while (1) {
if (qcrypto_pbkdf2_get_thread_cpu(&start_ms, errp) < 0) {
return -1;
}
if (qcrypto_pbkdf2(hash,
key, nkey,
salt, nsalt,
iterations,
out, sizeof(out),
errp) < 0) {
return -1;
}
if (qcrypto_pbkdf2_get_thread_cpu(&end_ms, errp) < 0) {
return -1;
}
delta_ms = end_ms - start_ms;
if (delta_ms > 500) {
break;
} else if (delta_ms < 100) {
iterations = iterations * 10;
} else {
iterations = (iterations * 1000 / delta_ms);
}
}
iterations = iterations * 1000 / delta_ms;
if (iterations > INT32_MAX) {
error_setg(errp, "Iterations %lld too large for a 32-bit int",
iterations);
return -1;
}
return iterations;
}

152
include/crypto/pbkdf.h Normal file
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@ -0,0 +1,152 @@
/*
* QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QCRYPTO_PBKDF_H__
#define QCRYPTO_PBKDF_H__
#include "crypto/hash.h"
/**
* This module provides an interface to the PBKDF2 algorithm
*
* https://en.wikipedia.org/wiki/PBKDF2
*
* <example>
* <title>Generating an AES encryption key from a user password</title>
* <programlisting>
* #include "crypto/cipher.h"
* #include "crypto/random.h"
* #include "crypto/pbkdf.h"
*
* ....
*
* char *password = "a-typical-awful-user-password";
* size_t nkey = qcrypto_cipher_get_key_len(QCRYPTO_CIPHER_ALG_AES_128);
* uint8_t *salt = g_new0(uint8_t, nkey);
* uint8_t *key = g_new0(uint8_t, nkey);
* int iterations;
* QCryptoCipher *cipher;
*
* if (qcrypto_random_bytes(salt, nkey, errp) < 0) {
* g_free(key);
* g_free(salt);
* return -1;
* }
*
* iterations = qcrypto_pbkdf2_count_iters(QCRYPTO_HASH_ALG_SHA256,
* (const uint8_t *)password,
* strlen(password),
* salt, nkey, errp);
* if (iterations < 0) {
* g_free(key);
* g_free(salt);
* return -1;
* }
*
* if (qcrypto_pbkdf2(QCRYPTO_HASH_ALG_SHA256,
* (const uint8_t *)password, strlen(password),
* salt, nkey, iterations, key, nkey, errp) < 0) {
* g_free(key);
* g_free(salt);
* return -1;
* }
*
* g_free(salt);
*
* cipher = qcrypto_cipher_new(QCRYPTO_CIPHER_ALG_AES_128,
* QCRYPTO_CIPHER_MODE_ECB,
* key, nkey, errp);
* g_free(key);
*
* ....encrypt some data...
*
* qcrypto_cipher_free(cipher);
* </programlisting>
* </example>
*
*/
/**
* qcrypto_pbkdf2_supports:
* @hash: the hash algorithm
*
* Determine if the current build supports the PBKDF2 algorithm
* in combination with the hash @hash.
*
* Returns true if supported, false otherwise
*/
bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash);
/**
* qcrypto_pbkdf2:
* @hash: the hash algorithm to use
* @key: the user password / key
* @nkey: the length of @key in bytes
* @salt: a random salt
* @nsalt: length of @salt in bytes
* @iterations: the number of iterations to compute
* @out: pointer to pre-allocated buffer to hold output
* @nout: length of @out in bytes
* @errp: pointer to a NULL-initialized error object
*
* Apply the PBKDF2 algorithm to derive an encryption
* key from a user password provided in @key. The
* @salt parameter is used to perturb the algorithm.
* The @iterations count determines how many times
* the hashing process is run, which influences how
* hard it is to crack the key. The number of @iterations
* should be large enough such that the algorithm takes
* 1 second or longer to derive a key. The derived key
* will be stored in the preallocated buffer @out.
*
* Returns: 0 on success, -1 on error
*/
int qcrypto_pbkdf2(QCryptoHashAlgorithm hash,
const uint8_t *key, size_t nkey,
const uint8_t *salt, size_t nsalt,
unsigned int iterations,
uint8_t *out, size_t nout,
Error **errp);
/**
* qcrypto_pbkdf2_count_iters:
* @hash: the hash algorithm to use
* @key: the user password / key
* @nkey: the length of @key in bytes
* @salt: a random salt
* @nsalt: length of @salt in bytes
* @errp: pointer to a NULL-initialized error object
*
* Time the PBKDF2 algorithm to determine how many
* iterations are required to derive an encryption
* key from a user password provided in @key in 1
* second of compute time. The result of this can
* be used as a the @iterations parameter of a later
* call to qcrypto_pbkdf2().
*
* Returns: number of iterations in 1 second, -1 on error
*/
int qcrypto_pbkdf2_count_iters(QCryptoHashAlgorithm hash,
const uint8_t *key, size_t nkey,
const uint8_t *salt, size_t nsalt,
Error **errp);
#endif /* QCRYPTO_PBKDF_H__ */

1
tests/.gitignore vendored
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@ -14,6 +14,7 @@ test-blockjob-txn
test-coroutine
test-crypto-cipher
test-crypto-hash
test-crypto-pbkdf
test-crypto-secret
test-crypto-tlscredsx509
test-crypto-tlscredsx509-work/

2
tests/Makefile
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@ -92,6 +92,7 @@ check-unit-$(CONFIG_GNUTLS) += tests/test-io-channel-tls$(EXESUF)
check-unit-y += tests/test-io-channel-command$(EXESUF)
check-unit-y += tests/test-io-channel-buffer$(EXESUF)
check-unit-y += tests/test-base64$(EXESUF)
check-unit-$(if $(CONFIG_NETTLE),y,$(CONFIG_GCRYPT_KDF)) += tests/test-crypto-pbkdf$(EXESUF)
check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
@ -496,6 +497,7 @@ tests/test-io-channel-command$(EXESUF): tests/test-io-channel-command.o \
tests/io-channel-helpers.o $(test-io-obj-y)
tests/test-io-channel-buffer$(EXESUF): tests/test-io-channel-buffer.o \
tests/io-channel-helpers.o $(test-io-obj-y)
tests/test-crypto-pbkdf$(EXESUF): tests/test-crypto-pbkdf.o $(test-crypto-obj-y)
libqos-obj-y = tests/libqos/pci.o tests/libqos/fw_cfg.o tests/libqos/malloc.o
libqos-obj-y += tests/libqos/i2c.o tests/libqos/libqos.o

392
tests/test-crypto-pbkdf.c Normal file
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@ -0,0 +1,392 @@
/*
* QEMU Crypto cipher algorithms
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "crypto/init.h"
#ifndef _WIN32
#include <sys/resource.h>
#endif
#if ((defined(CONFIG_NETTLE) || defined(CONFIG_GCRYPT)) && \
(defined(_WIN32) || defined(RUSAGE_THREAD)))
#include "crypto/pbkdf.h"
typedef struct QCryptoPbkdfTestData QCryptoPbkdfTestData;
struct QCryptoPbkdfTestData {
const char *path;
QCryptoHashAlgorithm hash;
unsigned int iterations;
const char *key;
size_t nkey;
const char *salt;
size_t nsalt;
const char *out;
size_t nout;
bool slow;
};
/* This test data comes from cryptsetup package
*
* $SRC/lib/crypto_backend/pbkdf2_generic.c
*
* under LGPLv2.1+ license
*/
static QCryptoPbkdfTestData test_data[] = {
/* RFC 3962 test data */
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter1",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 1,
.key = "password",
.nkey = 8,
.salt = "ATHENA.MIT.EDUraeburn",
.nsalt = 21,
.out = "\xcd\xed\xb5\x28\x1b\xb2\xf8\x01"
"\x56\x5a\x11\x22\xb2\x56\x35\x15"
"\x0a\xd1\xf7\xa0\x4b\xb9\xf3\xa3"
"\x33\xec\xc0\xe2\xe1\xf7\x08\x37",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter2",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 2,
.key = "password",
.nkey = 8,
.salt = "ATHENA.MIT.EDUraeburn",
.nsalt = 21,
.out = "\x01\xdb\xee\x7f\x4a\x9e\x24\x3e"
"\x98\x8b\x62\xc7\x3c\xda\x93\x5d"
"\xa0\x53\x78\xb9\x32\x44\xec\x8f"
"\x48\xa9\x9e\x61\xad\x79\x9d\x86",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter1200a",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 1200,
.key = "password",
.nkey = 8,
.salt = "ATHENA.MIT.EDUraeburn",
.nsalt = 21,
.out = "\x5c\x08\xeb\x61\xfd\xf7\x1e\x4e"
"\x4e\xc3\xcf\x6b\xa1\xf5\x51\x2b"
"\xa7\xe5\x2d\xdb\xc5\xe5\x14\x2f"
"\x70\x8a\x31\xe2\xe6\x2b\x1e\x13",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter5",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 5,
.key = "password",
.nkey = 8,
.salt = "\0224VxxV4\022", /* "\x1234567878563412 */
.nsalt = 8,
.out = "\xd1\xda\xa7\x86\x15\xf2\x87\xe6"
"\xa1\xc8\xb1\x20\xd7\x06\x2a\x49"
"\x3f\x98\xd2\x03\xe6\xbe\x49\xa6"
"\xad\xf4\xfa\x57\x4b\x6e\x64\xee",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter1200b",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 1200,
.key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
.nkey = 64,
.salt = "pass phrase equals block size",
.nsalt = 29,
.out = "\x13\x9c\x30\xc0\x96\x6b\xc3\x2b"
"\xa5\x5f\xdb\xf2\x12\x53\x0a\xc9"
"\xc5\xec\x59\xf1\xa4\x52\xf5\xcc"
"\x9a\xd9\x40\xfe\xa0\x59\x8e\xd1",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter1200c",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 1200,
.key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
.nkey = 65,
.salt = "pass phrase exceeds block size",
.nsalt = 30,
.out = "\x9c\xca\xd6\xd4\x68\x77\x0c\xd5"
"\x1b\x10\xe6\xa6\x87\x21\xbe\x61"
"\x1a\x8b\x4d\x28\x26\x01\xdb\x3b"
"\x36\xbe\x92\x46\x91\x5e\xc8\x2a",
.nout = 32
},
{
.path = "/crypto/pbkdf/rfc3962/sha1/iter50",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 50,
.key = "\360\235\204\236", /* g-clef ("\xf09d849e) */
.nkey = 4,
.salt = "EXAMPLE.COMpianist",
.nsalt = 18,
.out = "\x6b\x9c\xf2\x6d\x45\x45\x5a\x43"
"\xa5\xb8\xbb\x27\x6a\x40\x3b\x39"
"\xe7\xfe\x37\xa0\xc4\x1e\x02\xc2"
"\x81\xff\x30\x69\xe1\xe9\x4f\x52",
.nout = 32
},
/* RFC-6070 test data */
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter1",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 1,
.key = "password",
.nkey = 8,
.salt = "salt",
.nsalt = 4,
.out = "\x0c\x60\xc8\x0f\x96\x1f\x0e\x71\xf3\xa9"
"\xb5\x24\xaf\x60\x12\x06\x2f\xe0\x37\xa6",
.nout = 20
},
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter2",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 2,
.key = "password",
.nkey = 8,
.salt = "salt",
.nsalt = 4,
.out = "\xea\x6c\x01\x4d\xc7\x2d\x6f\x8c\xcd\x1e"
"\xd9\x2a\xce\x1d\x41\xf0\xd8\xde\x89\x57",
.nout = 20
},
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter4096",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 4096,
.key = "password",
.nkey = 8,
.salt = "salt",
.nsalt = 4,
.out = "\x4b\x00\x79\x01\xb7\x65\x48\x9a\xbe\xad"
"\x49\xd9\x26\xf7\x21\xd0\x65\xa4\x29\xc1",
.nout = 20
},
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter16777216",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 16777216,
.key = "password",
.nkey = 8,
.salt = "salt",
.nsalt = 4,
.out = "\xee\xfe\x3d\x61\xcd\x4d\xa4\xe4\xe9\x94"
"\x5b\x3d\x6b\xa2\x15\x8c\x26\x34\xe9\x84",
.nout = 20,
.slow = true,
},
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter4096a",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 4096,
.key = "passwordPASSWORDpassword",
.nkey = 24,
.salt = "saltSALTsaltSALTsaltSALTsaltSALTsalt",
.nsalt = 36,
.out = "\x3d\x2e\xec\x4f\xe4\x1c\x84\x9b\x80\xc8"
"\xd8\x36\x62\xc0\xe4\x4a\x8b\x29\x1a\x96"
"\x4c\xf2\xf0\x70\x38",
.nout = 25
},
{
.path = "/crypto/pbkdf/rfc6070/sha1/iter4096b",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 4096,
.key = "pass\0word",
.nkey = 9,
.salt = "sa\0lt",
.nsalt = 5,
.out = "\x56\xfa\x6a\xa7\x55\x48\x09\x9d\xcc\x37"
"\xd7\xf0\x34\x25\xe0\xc3",
.nout = 16
},
/* non-RFC misc test data */
#ifdef CONFIG_NETTLE
{
/* empty password test.
* Broken with libgcrypt <= 1.5.0, hence CONFIG_NETTLE */
.path = "/crypto/pbkdf/nonrfc/sha1/iter2",
.hash = QCRYPTO_HASH_ALG_SHA1,
.iterations = 2,
.key = "",
.nkey = 0,
.salt = "salt",
.nsalt = 4,
.out = "\x13\x3a\x4c\xe8\x37\xb4\xd2\x52\x1e\xe2"
"\xbf\x03\xe1\x1c\x71\xca\x79\x4e\x07\x97",
.nout = 20
},
#endif
{
/* Password exceeds block size test */
.path = "/crypto/pbkdf/nonrfc/sha256/iter1200",
.hash = QCRYPTO_HASH_ALG_SHA256,
.iterations = 1200,
.key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
.nkey = 65,
.salt = "pass phrase exceeds block size",
.nsalt = 30,
.out = "\x22\x34\x4b\xc4\xb6\xe3\x26\x75"
"\xa8\x09\x0f\x3e\xa8\x0b\xe0\x1d"
"\x5f\x95\x12\x6a\x2c\xdd\xc3\xfa"
"\xcc\x4a\x5e\x6d\xca\x04\xec\x58",
.nout = 32
},
#if 0
{
.path = "/crypto/pbkdf/nonrfc/sha512/iter1200",
.hash = QCRYPTO_HASH_ALG_SHA512,
.iterations = 1200,
.key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
.nkey = 129,
.salt = "pass phrase exceeds block size",
.nsalt = 30,
.out = "\x0f\xb2\xed\x2c\x0e\x6e\xfb\x7d"
"\x7d\x8e\xdd\x58\x01\xb4\x59\x72"
"\x99\x92\x16\x30\x5e\xa4\x36\x8d"
"\x76\x14\x80\xf3\xe3\x7a\x22\xb9",
.nout = 32
},
{
.path = "/crypto/pbkdf/nonrfc/whirlpool/iter1200",
.hash = QCRYPTO_HASH_ALG_WHIRLPOOL,
.iterations = 1200,
.key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
.nkey = 65,
.salt = "pass phrase exceeds block size",
.nsalt = 30,
.out = "\x9c\x1c\x74\xf5\x88\x26\xe7\x6a"
"\x53\x58\xf4\x0c\x39\xe7\x80\x89"
"\x07\xc0\x31\x19\x9a\x50\xa2\x48"
"\xf1\xd9\xfe\x78\x64\xe5\x84\x50",
.nout = 32
}
#endif
};
static inline char hex(int i)
{
if (i < 10) {
return '0' + i;
}
return 'a' + (i - 10);
}
static char *hex_string(const uint8_t *bytes,
size_t len)
{
char *hexstr = g_new0(char, len * 2 + 1);
size_t i;
for (i = 0; i < len; i++) {
hexstr[i * 2] = hex((bytes[i] >> 4) & 0xf);
hexstr[i * 2 + 1] = hex(bytes[i] & 0xf);
}
hexstr[len * 2] = '\0';
return hexstr;
}
static void test_pbkdf(const void *opaque)
{
const QCryptoPbkdfTestData *data = opaque;
size_t nout = data->nout;
uint8_t *out = g_new0(uint8_t, nout);
gchar *expect, *actual;
qcrypto_pbkdf2(data->hash,
(uint8_t *)data->key, data->nkey,
(uint8_t *)data->salt, data->nsalt,
data->iterations,
(uint8_t *)out, nout,
&error_abort);
expect = hex_string((const uint8_t *)data->out, data->nout);
actual = hex_string(out, nout);
g_assert_cmpstr(actual, ==, expect);
g_free(actual);
g_free(expect);
g_free(out);
}
static void test_pbkdf_timing(void)
{
uint8_t key[32];
uint8_t salt[32];
int iters;
memset(key, 0x5d, sizeof(key));
memset(salt, 0x7c, sizeof(salt));
iters = qcrypto_pbkdf2_count_iters(QCRYPTO_HASH_ALG_SHA256,
key, sizeof(key),
salt, sizeof(salt),
&error_abort);
g_assert(iters >= (1 << 15));
}
int main(int argc, char **argv)
{
size_t i;
g_test_init(&argc, &argv, NULL);
g_assert(qcrypto_init(NULL) == 0);
for (i = 0; i < G_N_ELEMENTS(test_data); i++) {
if (!test_data[i].slow ||
g_test_slow()) {
g_test_add_data_func(test_data[i].path, &test_data[i], test_pbkdf);
}
}
if (g_test_slow()) {
g_test_add_func("/crypt0/pbkdf/timing", test_pbkdf_timing);
}
return g_test_run();
}
#else
int main(int argc, char **argv)
{
return 0;
}
#endif