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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* plugins/preauth/pkinit/pkinit_kdf_test.c */
/*
* Copyright (C) 2011 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
/*
* pkinit_kdf_test.c -- Test to verify the correctness of the function
* pkinit_alg_agility_kdf() in pkinit_crypto_openssl, which implements
* the Key Derivation Function from the PKInit Algorithm Agility
* document, currently draft-ietf-krb-wg-pkinit-alg-agility-04.txt.
*/
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <unistd.h>
#include <dirent.h>
#include "k5-platform.h"
#include "pkinit_crypto_openssl.h"
/**
* Initialize a krb5_data from @a s, a constant string. Note @a s is evaluated
* multiple times; this is acceptable for constants.
*/
#define DATA_FROM_STRING(s) \
{0, sizeof(s)-1, (char *) s}
/* values from test vectors in the pkinit-alg-agility draft */
int secret_len = 256;
char twenty_as[10];
char eighteen_bs[9];
char party_u_name[] = "lha@SU.SE";
char party_v_name[] = "krbtgt/SU.SE@SU.SE";
int enctype_aes = ENCTYPE_AES256_CTS_HMAC_SHA1_96;
int enctype_des3 = ENCTYPE_DES3_CBC_SHA1;
const krb5_data lha_data = DATA_FROM_STRING("lha");
krb5_octet key1_hex[] =
{0xe6, 0xAB, 0x38, 0xC9, 0x41, 0x3E, 0x03, 0x5B,
0xB0, 0x79, 0x20, 0x1E, 0xD0, 0xB6, 0xB7, 0x3D,
0x8D, 0x49, 0xA8, 0x14, 0xA7, 0x37, 0xC0, 0x4E,
0xE6, 0x64, 0x96, 0x14, 0x20, 0x6F, 0x73, 0xAD};
krb5_octet key2_hex[] =
{0x77, 0xEF, 0x4E, 0x48, 0xC4, 0x20, 0xAE, 0x3F,
0xEC, 0x75, 0x10, 0x9D, 0x79, 0x81, 0x69, 0x7E,
0xED, 0x5D, 0x29, 0x5C, 0x90, 0xc6, 0x25, 0x64,
0xF7, 0xBF, 0xD1, 0x01, 0xFA, 0x9b, 0xC1, 0xD5};
krb5_octet key3_hex[] =
{0xD3, 0xC7, 0x8A, 0x79, 0xD6, 0x52, 0x13, 0xEF,
0xE9, 0xA8, 0x26, 0xF7, 0x5D, 0xFB, 0x01, 0xF7,
0x23, 0x62, 0xFB, 0x16, 0xFB, 0x01, 0xDA, 0xD6};
int
main(int argc, char **argv)
{
/* arguments for calls to pkinit_alg_agility_kdf() */
krb5_context context = 0;
krb5_data secret;
krb5_algorithm_identifier alg_id;
krb5_data as_req;
krb5_data pk_as_rep;
krb5_keyblock key_block;
/* other local variables */
int retval = 0;
int max_keylen = 2048;
krb5_enctype enctype = 0;
krb5_principal u_principal = NULL;
krb5_principal v_principal = NULL;
krb5_keyblock *key_block_ptr = &key_block;
/* initialize variables that get malloc'ed, so cleanup is safe */
krb5_init_context (&context);
memset(&alg_id, 0, sizeof(alg_id));
memset(&as_req, 0, sizeof(as_req));
memset(&pk_as_rep, 0, sizeof(pk_as_rep));
memset(&key_block, 0, sizeof(key_block));
/* set up a 256-byte, ALL-ZEROS secret */
if (NULL == (secret.data = malloc(secret_len))) {
printf("ERROR in pkinit_kdf_test: Memory allocation failed.");
retval = ENOMEM;
goto cleanup;
}
secret.length = secret_len;
memset(secret.data, 0, secret_len);
/* set-up the partyUInfo and partyVInfo principals */
if ((0 != (retval = krb5_parse_name(context, party_u_name,
&u_principal))) ||
(0 != (retval = krb5_parse_name(context, party_v_name,
&v_principal)))) {
printf("ERROR in pkinit_kdf_test: Error parsing names, retval = %d",
retval);
goto cleanup;
}
/* set-up the as_req and and pk_as_rep data */
memset(twenty_as, 0xaa, sizeof(twenty_as));
memset(eighteen_bs, 0xbb, sizeof(eighteen_bs));
as_req.length = sizeof(twenty_as);
as_req.data = twenty_as;
pk_as_rep.length = sizeof(eighteen_bs);
pk_as_rep.data = eighteen_bs;
/* TEST 1: SHA-1/AES */
/* set up algorithm id */
alg_id.algorithm.data = (char *)krb5_pkinit_sha1_oid;
alg_id.algorithm.length = krb5_pkinit_sha1_oid_len;
enctype = enctype_aes;
/* set-up the key_block */
if (0 != (retval = krb5_init_keyblock(context, enctype, max_keylen,
&key_block_ptr))) {
printf("ERROR in pkinit_kdf_test: can't init keyblock, retval = %d",
retval);
goto cleanup;
}
/* call pkinit_alg_agility_kdf() with test vector values*/
if (0 != (retval = pkinit_alg_agility_kdf(context, &secret,
&alg_id.algorithm,
u_principal, v_principal,
enctype, &as_req, &pk_as_rep,
&key_block))) {
printf("ERROR in pkinit_kdf_test: kdf call failed, retval = %d",
retval);
goto cleanup;
}
/* compare key to expected key value */
if ((key_block.length == sizeof(key1_hex)) &&
(0 == memcmp(key_block.contents, key1_hex, key_block.length))) {
printf("SUCCESS: TEST 1 (SHA-1/AES), Correct key value generated.\n");
retval = 0;
/* free the keyblock contents, so we can use it for the next test */
krb5_free_keyblock_contents(context, &key_block);
} else {
printf("FAILURE: TEST 1 (SHA-1/AES), Incorrect key value generated!\n");
retval = 1;
goto cleanup;
}
/* TEST 2: SHA-256/AES */
/* set up algorithm id */
alg_id.algorithm.data = (char *)krb5_pkinit_sha256_oid;
alg_id.algorithm.length = krb5_pkinit_sha256_oid_len;
enctype = enctype_aes;
/* set-up the key_block */
if (0 != (retval = krb5_init_keyblock(context, enctype, max_keylen,
&key_block_ptr))) {
printf("ERROR in pkinit_kdf_test: can't init keyblock, retval = %d",
retval);
goto cleanup;
}
/* call pkinit_alg_agility_kdf() with test vector values*/
if (0 != (retval = pkinit_alg_agility_kdf(context, &secret,
&alg_id.algorithm,
u_principal, v_principal,
enctype, &as_req, &pk_as_rep,
&key_block))) {
printf("ERROR in pkinit_kdf_test: kdf call failed, retval = %d",
retval);
goto cleanup;
}
/* compare key to expected key value */
if ((key_block.length == sizeof(key2_hex)) &&
(0 == memcmp(key_block.contents, key2_hex, key_block.length))) {
printf("SUCCESS: TEST 2 (SHA-256/AES), Correct key value generated.\n");
retval = 0;
/* free the keyblock contents, so we can use it for the next test */
krb5_free_keyblock_contents(context, &key_block);
} else {
printf("FAILURE: TEST 2 (SHA-256/AES), Incorrect key value generated!\n");
retval = 1;
goto cleanup;
}
/* TEST 3: SHA-512/DES3 */
/* set up algorithm id */
alg_id.algorithm.data = (char *)krb5_pkinit_sha512_oid;
alg_id.algorithm.length = krb5_pkinit_sha512_oid_len;
enctype = enctype_des3;
/* set-up the key_block */
if (0 != (retval = krb5_init_keyblock(context, enctype, max_keylen,
&key_block_ptr))) {
printf("ERROR in pkinit_kdf_test: can't init keyblock, retval = %d",
retval);
goto cleanup;
}
/* call pkinit_alg_agility_kdf() with test vector values*/
if (0 != (retval = pkinit_alg_agility_kdf(context, &secret,
&alg_id.algorithm,
u_principal, v_principal,
enctype, &as_req, &pk_as_rep,
&key_block))) {
printf("ERROR in pkinit_kdf_test: kdf call failed, retval = %d",
retval);
goto cleanup;
}
/* compare key to expected key value */
if ((key_block.length == sizeof(key3_hex)) &&
(0 == memcmp(key_block.contents, key3_hex, key_block.length))) {
printf("SUCCESS: TEST 3 (SHA-512/DES3), Correct key value generated.\n");
retval = 0;
} else {
printf("FAILURE: TEST 2 (SHA-512/DES3), Incorrect key value generated!\n");
retval = 1;
goto cleanup;
}
cleanup:
/* release all allocated resources, whether good or bad return */
free(secret.data);
free(u_principal);
free(v_principal);
krb5_free_keyblock_contents(context, &key_block);
exit(retval);
}
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