@@ -22,17 +22,16 @@
#include <openssl/evp.h>
/* Prints out the data buffer as a sequence of hex bytes */
static void print_data_hex(const void *data, size_t len) {
size_t i;
for (i = 0; i < len; ++i) {
// Prints out the data buffer as a sequence of hex bytes.
static void PrintDataHex(const void *data, size_t len) {
for (size_t i = 0; i < len; ++i) {
fprintf(stderr, "%02x", (int)((const uint8_t *)data)[i]);
}
}
/* Helper for testing that PBKDF2 derives the expected key from the given
* inputs. Returns 1 on success, 0 otherwise. */
static int test_ PBKDF2(const void *password, size_t password_len,
// Helper for testing that PBKDF2 derives the expected key from the given
// inputs. Returns 1 on success, 0 otherwise.
static bool Test PBKDF2(const void *password, size_t password_len,
const void *salt, size_t salt_len, unsigned iterations,
const EVP_MD *digest, size_t key_len,
const uint8_t *expected_key) {
@@ -40,64 +39,65 @@ static int test_PBKDF2(const void *password, size_t password_len,
if (key_len > sizeof(key)) {
fprintf(stderr, "Output buffer is not large enough.\n");
return 0 ;
return false ;
}
if (!PKCS5_PBKDF2_HMAC(password, password_len, salt, salt_len, iterations,
digest, key_len, key)) {
if (!PKCS5_PBKDF2_HMAC((const char *)password, password_len,
(const uint8_t *)salt, salt_len, iterations, digest,
key_len, key)) {
fprintf(stderr, "Call to PKCS5_PBKDF2_HMAC failed\n");
BIO_print_errors_fp(stderr);
return 0 ;
return false ;
}
if (memcmp(key, expected_key, key_len) != 0) {
fprintf(stderr, "Resulting key material does not match expectation\n");
fprintf(stderr, "Expected:\n ");
print_data_h ex(expected_key, key_len);
PrintDataH ex(expected_key, key_len);
fprintf(stderr, "\nActual:\n ");
print_data_h ex(key, key_len);
PrintDataH ex(key, key_len);
fprintf(stderr, "\n");
return 0 ;
return false ;
}
return 1 ;
return true ;
}
/* Tests deriving a key using an empty password (specified both as NULL and as
* non-NULL). Note that NULL has special meaning to HMAC initialization. */
static int test_empty_password(void ) {
// Tests deriving a key using an empty password (specified both as NULL and as
// non-NULL). Note that NULL has special meaning to HMAC initialization.
static bool TestEmptyPassword( ) {
const uint8_t kKey[] = {0xa3, 0x3d, 0xdd, 0xc3, 0x04, 0x78, 0x18,
0x55, 0x15, 0x31, 0x1f, 0x87, 0x52, 0x89,
0x5d, 0x36, 0xea, 0x43, 0x63, 0xa2};
if (!test_ PBKDF2(NULL, 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey) ||
!test_ PBKDF2("", 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey)) {
return 0 ;
if (!Test PBKDF2(NULL, 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey) ||
!Test PBKDF2("", 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey)) {
return false ;
}
return 1 ;
return true ;
}
/* Tests deriving a key using an empty salt. Note that the expectation was
* generated using OpenSSL itself, and hence is not verified. */
static int test_empty_salt(void ) {
// Tests deriving a key using an empty salt. Note that the expectation was
// generated using OpenSSL itself, and hence is not verified.
static bool TestEmptySalt( ) {
const uint8_t kKey[] = {0x8b, 0xc2, 0xf9, 0x16, 0x7a, 0x81, 0xcd, 0xcf,
0xad, 0x12, 0x35, 0xcd, 0x90, 0x47, 0xf1, 0x13,
0x62, 0x71, 0xc1, 0xf9, 0x78, 0xfc, 0xfc, 0xb3,
0x5e, 0x22, 0xdb, 0xea, 0xfa, 0x46, 0x34, 0xf6};
if (!test_ PBKDF2("password", 8, NULL, 0, 2, EVP_sha256(), sizeof(kKey),
kKey) ||
!test_ PBKDF2("password", 8, "", 0, 2, EVP_sha256(), sizeof(kKey), kKey)) {
return 0 ;
if (!Test PBKDF2("password", 8, NULL, 0, 2, EVP_sha256(), sizeof(kKey),
kKey) ||
!Test PBKDF2("password", 8, "", 0, 2, EVP_sha256(), sizeof(kKey), kKey)) {
return false ;
}
return 1 ;
return true ;
}
/* Exercises test vectors taken from https://tools.ietf.org/html/rfc6070.
* Note that each of these test vectors uses SHA-1 as the digest. */
static int test_rfc6070_vectors(void ) {
// Exercises test vectors taken from https://tools.ietf.org/html/rfc6070.
// Note that each of these test vectors uses SHA-1 as the digest.
static bool TestRFC6070Vectors( ) {
const uint8_t kKey1[] = {0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e,
0x71, 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60,
0x12, 0x06, 0x2f, 0xe0, 0x37, 0xa6};
@@ -107,29 +107,29 @@ static int test_rfc6070_vectors(void) {
const uint8_t kKey3[] = {0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3};
if (!test_ PBKDF2("password", 8, "salt", 4, 1, EVP_sha1(), sizeof(kKey1),
kKey1) ||
!test_ PBKDF2("password", 8, "salt", 4, 2, EVP_sha1(), sizeof(kKey2),
kKey2) ||
!test_ PBKDF2("pass\0word", 9, "sa\0lt", 5, 4096, EVP_sha1(),
sizeof(kKey3), kKey3)) {
return 0 ;
if (!Test PBKDF2("password", 8, "salt", 4, 1, EVP_sha1(), sizeof(kKey1),
kKey1) ||
!Test PBKDF2("password", 8, "salt", 4, 2, EVP_sha1(), sizeof(kKey2),
kKey2) ||
!Test PBKDF2("pass\0word", 9, "sa\0lt", 5, 4096, EVP_sha1(),
sizeof(kKey3), kKey3)) {
return false ;
}
return 1 ;
return true ;
}
/* Tests key derivation using SHA-2 digests */
static int test_sha2(void ) {
/* This test was taken from:
* http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors */
// Tests key derivation using SHA-2 digests.
static bool TestSHA2( ) {
// This test was taken from:
// http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors.
const uint8_t kKey1[] = {0xae, 0x4d, 0x0c, 0x95, 0xaf, 0x6b, 0x46, 0xd3,
0x2d, 0x0a, 0xdf, 0xf9, 0x28, 0xf0, 0x6d, 0xd0,
0x2a, 0x30, 0x3f, 0x8e, 0xf3, 0xc2, 0x51, 0xdf,
0xd6, 0xe2, 0xd8, 0x5a, 0x95, 0x47, 0x4c, 0x43};
/* This test was taken from:
* http://stackoverflow.com/questions/15593184/pbkdf2-hmac-sha-512-test-vectors */
// This test was taken from:
// http://stackoverflow.com/questions/15593184/pbkdf2-hmac-sha-512-test-vectors.
const uint8_t kKey2[] = {
0x8c, 0x05, 0x11, 0xf4, 0xc6, 0xe5, 0x97, 0xc6, 0xac, 0x63, 0x15,
0xd8, 0xf0, 0x36, 0x2e, 0x22, 0x5f, 0x3c, 0x50, 0x14, 0x95, 0xba,
@@ -138,38 +138,38 @@ static int test_sha2(void) {
0x75, 0xae, 0xfe, 0x30, 0x22, 0x5c, 0x58, 0x3a, 0x18, 0x6c, 0xd8,
0x2b, 0xd4, 0xda, 0xea, 0x97, 0x24, 0xa3, 0xd3, 0xb8};
if (!test_ PBKDF2("password", 8, "salt", 4, 2, EVP_sha256(), sizeof(kKey1),
kKey1) ||
!test_ PBKDF2("passwordPASSWORDpassword", 24,
"saltSALTsaltSALTsaltSALTsaltSALTsalt", 36, 4096,
EVP_sha512(), sizeof(kKey2), kKey2)) {
return 0 ;
if (!Test PBKDF2("password", 8, "salt", 4, 2, EVP_sha256(), sizeof(kKey1),
kKey1) ||
!Test PBKDF2("passwordPASSWORDpassword", 24,
"saltSALTsaltSALTsaltSALTsaltSALTsalt", 36, 4096,
EVP_sha512(), sizeof(kKey2), kKey2)) {
return false ;
}
return 1 ;
return true ;
}
int main(void) {
CRYPTO_library_init();
ERR_load_crypto_strings();
if (!test_empty_p assword()) {
fprintf(stderr, "test_empty_p assword failed\n");
if (!TestEmptyP assword()) {
fprintf(stderr, "TestEmptyP assword failed\n");
return 1;
}
if (!test_empty_s alt()) {
fprintf(stderr, "test_empty_s alt failed\n");
if (!TestEmptyS alt()) {
fprintf(stderr, "TestEmptyS alt failed\n");
return 1;
}
if (!test_rfc6070_v ectors()) {
fprintf(stderr, "test_rfc6070_v ectors failed\n");
if (!TestRFC6070V ectors()) {
fprintf(stderr, "TestRFC6070V ectors failed\n");
return 1;
}
if (!test_sha 2()) {
fprintf(stderr, "test_sha 2 failed\n");
if (!TestSHA 2()) {
fprintf(stderr, "TestSHA 2 failed\n");
return 1;
}