test/srptest.c - third_party/openssl - Git at Google

 /*
  * Copyright 2011-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 /*
  * SRP is deprecated, so we're going to have to use some deprecated APIs in
  * order to test it.
  */
 #define OPENSSL_SUPPRESS_DEPRECATED

 #include <openssl/opensslconf.h>
 # include "testutil.h"

 #ifdef OPENSSL_NO_SRP
 # include <stdio.h>
 #else

 # include <openssl/srp.h>
 # include <openssl/rand.h>
 # include <openssl/err.h>

 # define RANDOM_SIZE 32         /* use 256 bits on each side */

 static int run_srp(const char *username, const char *client_pass,
                    const char *server_pass)
 {
     int ret = 0;
     BIGNUM *s = NULL;
     BIGNUM *v = NULL;
     BIGNUM *a = NULL;
     BIGNUM *b = NULL;
     BIGNUM *u = NULL;
     BIGNUM *x = NULL;
     BIGNUM *Apub = NULL;
     BIGNUM *Bpub = NULL;
     BIGNUM *Kclient = NULL;
     BIGNUM *Kserver = NULL;
     unsigned char rand_tmp[RANDOM_SIZE];
     /* use builtin 1024-bit params */
     const SRP_gN *GN;

     if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
         return 0;

     /* Set up server's password entry */
     if (!TEST_true(SRP_create_verifier_BN(username, server_pass,
                                           &s, &v, GN->N, GN->g)))
         goto end;

     test_output_bignum("N", GN->N);
     test_output_bignum("g", GN->g);
     test_output_bignum("Salt", s);
     test_output_bignum("Verifier", v);

     /* Server random */
     RAND_bytes(rand_tmp, sizeof(rand_tmp));
     b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
     if (!TEST_BN_ne_zero(b))
         goto end;
     test_output_bignum("b", b);

     /* Server's first message */
     Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
     test_output_bignum("B", Bpub);

     if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
         goto end;

     /* Client random */
     RAND_bytes(rand_tmp, sizeof(rand_tmp));
     a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
     if (!TEST_BN_ne_zero(a))
         goto end;
     test_output_bignum("a", a);

     /* Client's response */
     Apub = SRP_Calc_A(a, GN->N, GN->g);
     test_output_bignum("A", Apub);

     if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
         goto end;

     /* Both sides calculate u */
     u = SRP_Calc_u(Apub, Bpub, GN->N);

     /* Client's key */
     x = SRP_Calc_x(s, username, client_pass);
     Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
     test_output_bignum("Client's key", Kclient);

     /* Server's key */
     Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
     test_output_bignum("Server's key", Kserver);

     if (!TEST_BN_eq(Kclient, Kserver))
         goto end;

     ret = 1;

 end:
     BN_clear_free(Kclient);
     BN_clear_free(Kserver);
     BN_clear_free(x);
     BN_free(u);
     BN_free(Apub);
     BN_clear_free(a);
     BN_free(Bpub);
     BN_clear_free(b);
     BN_free(s);
     BN_clear_free(v);

     return ret;
 }

 static int check_bn(const char *name, const BIGNUM *bn, const char *hexbn)
 {
     BIGNUM *tmp = NULL;
     int r;

     if (!TEST_true(BN_hex2bn(&tmp, hexbn)))
         return 0;

     if (BN_cmp(bn, tmp) != 0)
         TEST_error("unexpected %s value", name);
     r = TEST_BN_eq(bn, tmp);
     BN_free(tmp);
     return r;
 }

 /* SRP test vectors from RFC5054 */
 static int run_srp_kat(void)
 {
     int ret = 0;
     BIGNUM *s = NULL;
     BIGNUM *v = NULL;
     BIGNUM *a = NULL;
     BIGNUM *b = NULL;
     BIGNUM *u = NULL;
     BIGNUM *x = NULL;
     BIGNUM *Apub = NULL;
     BIGNUM *Bpub = NULL;
     BIGNUM *Kclient = NULL;
     BIGNUM *Kserver = NULL;
     /* use builtin 1024-bit params */
     const SRP_gN *GN;

     if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
         goto err;
     BN_hex2bn(&s, "BEB25379D1A8581EB5A727673A2441EE");
     /* Set up server's password entry */
     if (!TEST_true(SRP_create_verifier_BN("alice", "password123", &s, &v, GN->N,
                                           GN->g)))
         goto err;

     TEST_info("checking v");
     if (!TEST_true(check_bn("v", v,
                  "7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D812"
                  "9BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5"
                  "C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5"
                  "EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78"
                  "E955A5E29E7AB245DB2BE315E2099AFB")))
         goto err;
     TEST_note("    okay");

     /* Server random */
     BN_hex2bn(&b, "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D1"
                   "05284D20");

     /* Server's first message */
     Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
     if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
         goto err;

     TEST_info("checking B");
     if (!TEST_true(check_bn("B", Bpub,
                   "BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011"
                   "BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC99"
                   "6C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA"
                   "37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAE"
                   "EB4012B7D7665238A8E3FB004B117B58")))
         goto err;
     TEST_note("    okay");

     /* Client random */
     BN_hex2bn(&a, "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DD"
                   "DA2D4393");

     /* Client's response */
     Apub = SRP_Calc_A(a, GN->N, GN->g);
     if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
         goto err;

     TEST_info("checking A");
     if (!TEST_true(check_bn("A", Apub,
                   "61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC4"
                   "4352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC"
                   "8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44"
                   "BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEA"
                   "B349EF5D76988A3672FAC47B0769447B")))
         goto err;
     TEST_note("    okay");

     /* Both sides calculate u */
     u = SRP_Calc_u(Apub, Bpub, GN->N);

     if (!TEST_true(check_bn("u", u,
                     "CE38B9593487DA98554ED47D70A7AE5F462EF019")))
         goto err;

     /* Client's key */
     x = SRP_Calc_x(s, "alice", "password123");
     Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
     TEST_info("checking client's key");
     if (!TEST_true(check_bn("Client's key", Kclient,
                   "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
                   "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
                   "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
                   "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
                   "C346D7E474B29EDE8A469FFECA686E5A")))
         goto err;
     TEST_note("    okay");

     /* Server's key */
     Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
     TEST_info("checking server's key");
     if (!TEST_true(check_bn("Server's key", Kserver,
                   "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
                   "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
                   "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
                   "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
                   "C346D7E474B29EDE8A469FFECA686E5A")))
         goto err;
     TEST_note("    okay");

     ret = 1;

 err:
     BN_clear_free(Kclient);
     BN_clear_free(Kserver);
     BN_clear_free(x);
     BN_free(u);
     BN_free(Apub);
     BN_clear_free(a);
     BN_free(Bpub);
     BN_clear_free(b);
     BN_free(s);
     BN_clear_free(v);

     return ret;
 }

 static int run_srp_tests(void)
 {
     /* "Negative" test, expect a mismatch */
     TEST_info("run_srp: expecting a mismatch");
     if (!TEST_false(run_srp("alice", "password1", "password2")))
         return 0;

     /* "Positive" test, should pass */
     TEST_info("run_srp: expecting a match");
     if (!TEST_true(run_srp("alice", "password", "password")))
         return 0;

     return 1;
 }
 #endif

 int setup_tests(void)
 {
 #ifdef OPENSSL_NO_SRP
     printf("No SRP support\n");
 #else
     ADD_TEST(run_srp_tests);
     ADD_TEST(run_srp_kat);
 #endif
     return 1;
 }
	/*
	* Copyright 2011-2021 The OpenSSL Project Authors. All Rights Reserved.
	*
	* Licensed under the Apache License 2.0 (the "License"). You may not use
	* this file except in compliance with the License. You can obtain a copy
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	/*
	* SRP is deprecated, so we're going to have to use some deprecated APIs in
	* order to test it.
	*/
	#define OPENSSL_SUPPRESS_DEPRECATED

	#include <openssl/opensslconf.h>
	# include "testutil.h"

	#ifdef OPENSSL_NO_SRP
	# include <stdio.h>
	#else

	# include <openssl/srp.h>
	# include <openssl/rand.h>
	# include <openssl/err.h>

	# define RANDOM_SIZE 32 /* use 256 bits on each side */

	static int run_srp(const char username, const char client_pass,
	const char *server_pass)
	{
	int ret = 0;
	BIGNUM *s = NULL;
	BIGNUM *v = NULL;
	BIGNUM *a = NULL;
	BIGNUM *b = NULL;
	BIGNUM *u = NULL;
	BIGNUM *x = NULL;
	BIGNUM *Apub = NULL;
	BIGNUM *Bpub = NULL;
	BIGNUM *Kclient = NULL;
	BIGNUM *Kserver = NULL;
	unsigned char rand_tmp[RANDOM_SIZE];
	/* use builtin 1024-bit params */
	const SRP_gN *GN;

	if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
	return 0;

	/* Set up server's password entry */
	if (!TEST_true(SRP_create_verifier_BN(username, server_pass,
	&s, &v, GN->N, GN->g)))
	goto end;

	test_output_bignum("N", GN->N);
	test_output_bignum("g", GN->g);
	test_output_bignum("Salt", s);
	test_output_bignum("Verifier", v);

	/* Server random */
	RAND_bytes(rand_tmp, sizeof(rand_tmp));
	b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
	if (!TEST_BN_ne_zero(b))
	goto end;
	test_output_bignum("b", b);

	/* Server's first message */
	Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
	test_output_bignum("B", Bpub);

	if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
	goto end;

	/* Client random */
	RAND_bytes(rand_tmp, sizeof(rand_tmp));
	a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
	if (!TEST_BN_ne_zero(a))
	goto end;
	test_output_bignum("a", a);

	/* Client's response */
	Apub = SRP_Calc_A(a, GN->N, GN->g);
	test_output_bignum("A", Apub);

	if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
	goto end;

	/* Both sides calculate u */
	u = SRP_Calc_u(Apub, Bpub, GN->N);

	/* Client's key */
	x = SRP_Calc_x(s, username, client_pass);
	Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
	test_output_bignum("Client's key", Kclient);

	/* Server's key */
	Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
	test_output_bignum("Server's key", Kserver);

	if (!TEST_BN_eq(Kclient, Kserver))
	goto end;

	ret = 1;

	end:
	BN_clear_free(Kclient);
	BN_clear_free(Kserver);
	BN_clear_free(x);
	BN_free(u);
	BN_free(Apub);
	BN_clear_free(a);
	BN_free(Bpub);
	BN_clear_free(b);
	BN_free(s);
	BN_clear_free(v);

	return ret;
	}

	static int check_bn(const char name, const BIGNUM bn, const char *hexbn)
	{
	BIGNUM *tmp = NULL;
	int r;

	if (!TEST_true(BN_hex2bn(&tmp, hexbn)))
	return 0;

	if (BN_cmp(bn, tmp) != 0)
	TEST_error("unexpected %s value", name);
	r = TEST_BN_eq(bn, tmp);
	BN_free(tmp);
	return r;
	}

	/* SRP test vectors from RFC5054 */
	static int run_srp_kat(void)
	{
	int ret = 0;
	BIGNUM *s = NULL;
	BIGNUM *v = NULL;
	BIGNUM *a = NULL;
	BIGNUM *b = NULL;
	BIGNUM *u = NULL;
	BIGNUM *x = NULL;
	BIGNUM *Apub = NULL;
	BIGNUM *Bpub = NULL;
	BIGNUM *Kclient = NULL;
	BIGNUM *Kserver = NULL;
	/* use builtin 1024-bit params */
	const SRP_gN *GN;

	if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
	goto err;
	BN_hex2bn(&s, "BEB25379D1A8581EB5A727673A2441EE");
	/* Set up server's password entry */
	if (!TEST_true(SRP_create_verifier_BN("alice", "password123", &s, &v, GN->N,
	GN->g)))
	goto err;

	TEST_info("checking v");
	if (!TEST_true(check_bn("v", v,
	"7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D812"
	"9BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5"
	"C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5"
	"EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78"
	"E955A5E29E7AB245DB2BE315E2099AFB")))
	goto err;
	TEST_note(" okay");

	/* Server random */
	BN_hex2bn(&b, "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D1"
	"05284D20");

	/* Server's first message */
	Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
	if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
	goto err;

	TEST_info("checking B");
	if (!TEST_true(check_bn("B", Bpub,
	"BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011"
	"BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC99"
	"6C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA"
	"37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAE"
	"EB4012B7D7665238A8E3FB004B117B58")))
	goto err;
	TEST_note(" okay");

	/* Client random */
	BN_hex2bn(&a, "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DD"
	"DA2D4393");

	/* Client's response */
	Apub = SRP_Calc_A(a, GN->N, GN->g);
	if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
	goto err;

	TEST_info("checking A");
	if (!TEST_true(check_bn("A", Apub,
	"61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC4"
	"4352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC"
	"8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44"
	"BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEA"
	"B349EF5D76988A3672FAC47B0769447B")))
	goto err;
	TEST_note(" okay");

	/* Both sides calculate u */
	u = SRP_Calc_u(Apub, Bpub, GN->N);

	if (!TEST_true(check_bn("u", u,
	"CE38B9593487DA98554ED47D70A7AE5F462EF019")))
	goto err;

	/* Client's key */
	x = SRP_Calc_x(s, "alice", "password123");
	Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
	TEST_info("checking client's key");
	if (!TEST_true(check_bn("Client's key", Kclient,
	"B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
	"233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
	"41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
	"3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
	"C346D7E474B29EDE8A469FFECA686E5A")))
	goto err;
	TEST_note(" okay");

	/* Server's key */
	Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
	TEST_info("checking server's key");
	if (!TEST_true(check_bn("Server's key", Kserver,
	"B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
	"233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
	"41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
	"3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
	"C346D7E474B29EDE8A469FFECA686E5A")))
	goto err;
	TEST_note(" okay");

	ret = 1;

	err:
	BN_clear_free(Kclient);
	BN_clear_free(Kserver);
	BN_clear_free(x);
	BN_free(u);
	BN_free(Apub);
	BN_clear_free(a);
	BN_free(Bpub);
	BN_clear_free(b);
	BN_free(s);
	BN_clear_free(v);

	return ret;
	}

	static int run_srp_tests(void)
	{
	/* "Negative" test, expect a mismatch */
	TEST_info("run_srp: expecting a mismatch");
	if (!TEST_false(run_srp("alice", "password1", "password2")))
	return 0;

	/* "Positive" test, should pass */
	TEST_info("run_srp: expecting a match");
	if (!TEST_true(run_srp("alice", "password", "password")))
	return 0;

	return 1;
	}
	#endif

	int setup_tests(void)
	{
	#ifdef OPENSSL_NO_SRP
	printf("No SRP support\n");
	#else
	ADD_TEST(run_srp_tests);
	ADD_TEST(run_srp_kat);
	#endif
	return 1;
	}