text: /* Written by Christian Heimes, 2013 */
  /*
   * Copyright (c) 2013 The OpenSSL Project.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. All advertising materials mentioning features or use of this
   *    software must display the following acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
   *
   * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
   *    endorse or promote products derived from this software without
   *    prior written permission. For written permission, please contact
   *    openssl-core@openssl.org.
   *
   * 5. Products derived from this software may not be called "OpenSSL"
   *    nor may "OpenSSL" appear in their names without prior written
   *    permission of the OpenSSL Project.
   *
   * 6. Redistributions of any form whatsoever must retain the following
   *    acknowledgment:
   *    "This product includes software developed by the OpenSSL Project
   *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
   *
   * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  
  #include <stdio.h>
  #include <string.h>
  
  #include "../e_os.h"
  
  #include <openssl/opensslconf.h>
  #include <openssl/evp.h>
  #ifndef OPENSSL_NO_ENGINE
  #include <openssl/engine.h>
  #endif
  #include <openssl/err.h>
  #include <openssl/conf.h>
  
  #ifdef OPENSSL_NO_SHA
  int main(int argc, char *argv[])
  {
      printf("No SHA support\n");
      return(0);
  }
  #else
  
  typedef struct {
  	const char *pass;
  	int passlen;
  	const char *salt;
  	int saltlen;
  	int iter;
  } testdata;
  
  static testdata test_cases[] = {
  	{"password", 8, "salt", 4, 1},
  	{"password", 8, "salt", 4, 2},
  	{"password", 8, "salt", 4, 4096},
  	{"passwordPASSWORDpassword", 24,
  	 "saltSALTsaltSALTsaltSALTsaltSALTsalt", 36, 4096},
  	{"pass\0word", 9, "sa\0lt", 5, 4096},
  	{NULL},
  };
  
  static const char *sha1_results[] = {
  	"0c60c80f961f0e71f3a9b524af6012062fe037a6",
  	"ea6c014dc72d6f8ccd1ed92ace1d41f0d8de8957",
  	"4b007901b765489abead49d926f721d065a429c1",
  	"3d2eec4fe41c849b80c8d83662c0e44a8b291a964cf2f07038",
  	"56fa6aa75548099dcc37d7f03425e0c3",
  };
  
  static const char *sha256_results[] = {
  	"120fb6cffcf8b32c43e7225256c4f837a86548c92ccc35480805987cb70be17b",
  	"ae4d0c95af6b46d32d0adff928f06dd02a303f8ef3c251dfd6e2d85a95474c43",
  	"c5e478d59288c841aa530db6845c4c8d962893a001ce4e11a4963873aa98134a",
  	"348c89dbcbd32b2f32d814b8116e84cf2b17347ebc1800181c4e2a1fb8dd53e1c63551"
  		"8c7dac47e9",
  	"89b69d0516f829893c696226650a8687",
  };
  
  static const char *sha512_results[] = {
  	"867f70cf1ade02cff3752599a3a53dc4af34c7a669815ae5d513554e1c8cf252c02d47"
  		"0a285a0501bad999bfe943c08f050235d7d68b1da55e63f73b60a57fce",
  	"e1d9c16aa681708a45f5c7c4e215ceb66e011a2e9f0040713f18aefdb866d53cf76cab"
  		"2868a39b9f7840edce4fef5a82be67335c77a6068e04112754f27ccf4e",
  	"d197b1b33db0143e018b12f3d1d1479e6cdebdcc97c5c0f87f6902e072f457b5143f30"
  		"602641b3d55cd335988cb36b84376060ecd532e039b742a239434af2d5",
  	"8c0511f4c6e597c6ac6315d8f0362e225f3c501495ba23b868c005174dc4ee71115b59"
  		"f9e60cd9532fa33e0f75aefe30225c583a186cd82bd4daea9724a3d3b8",
  	"9d9e9c4cd21fe4be24d5b8244c759665",
  };
  
  static void
  hexdump(FILE *f, const char *title, const unsigned char *s, int l) {
  	int i;
  	fprintf(f, "%s", title);
  	for(i=0; i < l ; i++) {
  		fprintf(f, "%02x", s[i]);
  	}
  	fprintf(f, "\n");
  }
  
  static void
  convert(unsigned char *dst, const unsigned char *src, int len) {
  	int i;
  	for(i=0; i < len; i++, dst++, src+=2) {
  		unsigned int n;
  		sscanf((char *)src, "%2x", &n);
  		*dst = (unsigned char)n;
  	}
  	*dst = 0;
  }
  
  static void
  test_p5_pbkdf2(int i, char *digestname, testdata *test, const char *hex)
  {
  	const EVP_MD *digest;
  	unsigned char *out;
  	unsigned char *expected;
  	int keylen, r;
  
  	digest = EVP_get_digestbyname(digestname);
  	if (digest == NULL) {
  		fprintf(stderr, "unknown digest %s\n", digestname);
  		EXIT(5);
  	}
  
  	if ((strlen(hex) % 2) != 0) {
  		fprintf(stderr, "odd hex digest %s %i\n", digestname, i);
  		EXIT(5);
  	}
  	keylen = strlen(hex) / 2;
  	expected = OPENSSL_malloc(keylen + 1);
  	out = OPENSSL_malloc(keylen + 1);
  	if ((expected == NULL) || (out == NULL)) {
  		fprintf(stderr, "malloc() failed\n");
  		EXIT(5);
  	}
  	convert(expected, (const unsigned char *)hex, keylen);
  
  	r = PKCS5_PBKDF2_HMAC(test->pass, test->passlen,
  						  (const unsigned char *)test->salt, test->saltlen,
  						  test->iter, digest, keylen, out);
  
  	if (r == 0) {
  		fprintf(stderr, "PKCS5_PBKDF2_HMAC(%s) failure test %i\n",
  				digestname, i);
  		EXIT(3);
  	}
  	if (memcmp(expected, out, keylen) != 0) {
  		fprintf(stderr, "Wrong result for PKCS5_PBKDF2_HMAC(%s) test %i\n",
  				digestname, i);
  		hexdump(stderr, "expected: ", expected, keylen);
  		hexdump(stderr, "result:   ", out, keylen);
  		EXIT(2);
  	}
  	OPENSSL_free(expected);
  	OPENSSL_free(out);
  }
  
  int main(int argc,char **argv) {
  	int i;
  	testdata *test = test_cases;
  
  	CRYPTO_malloc_debug_init();
  	CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL);
  	CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
  
  	OpenSSL_add_all_digests();
  #ifndef OPENSSL_NO_ENGINE
  	ENGINE_load_builtin_engines();
  	ENGINE_register_all_digests();
  #endif
  
  	printf("PKCS5_PBKDF2_HMAC() tests ");
  	for (i=0; test->pass != NULL; i++, test++) {
  #ifndef OPENSSL_NO_SHA0
  		test_p5_pbkdf2(i, "sha1", test, sha1_results[i]);
  #endif
  #ifndef OPENSSL_NO_SHA256
  		test_p5_pbkdf2(i, "sha256", test, sha256_results[i]);
  #endif
  #ifndef OPENSSL_NO_SHA512
  		test_p5_pbkdf2(i, "sha512", test, sha512_results[i]);
  #endif
  		printf(".");
  	}
  	printf(" done\n");
  
  #ifndef OPENSSL_NO_ENGINE
  	ENGINE_cleanup();
  #endif
  	EVP_cleanup();
  	CRYPTO_cleanup_all_ex_data();
  	ERR_remove_thread_state(NULL);
  	ERR_free_strings();
  	CRYPTO_mem_leaks_fp(stderr);
  	return 0;
  }
  #endif /* OPENSSL_NO_SHA */
  