2 * Copyright 2011-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/opensslconf.h>
11 # include "testutil.h"
17 # include <openssl/srp.h>
18 # include <openssl/rand.h>
19 # include <openssl/err.h>
21 # define RANDOM_SIZE 32 /* use 256 bits on each side */
23 static int run_srp(const char *username, const char *client_pass,
24 const char *server_pass)
35 BIGNUM *Kclient = NULL;
36 BIGNUM *Kserver = NULL;
37 unsigned char rand_tmp[RANDOM_SIZE];
38 /* use builtin 1024-bit params */
41 if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
44 /* Set up server's password entry */
45 if (!TEST_true(SRP_create_verifier_BN(username, server_pass,
46 &s, &v, GN->N, GN->g)))
49 test_output_bignum("N", GN->N);
50 test_output_bignum("g", GN->g);
51 test_output_bignum("Salt", s);
52 test_output_bignum("Verifier", v);
55 RAND_bytes(rand_tmp, sizeof(rand_tmp));
56 b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
57 if (!TEST_BN_ne_zero(b))
59 test_output_bignum("b", b);
61 /* Server's first message */
62 Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
63 test_output_bignum("B", Bpub);
65 if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
69 RAND_bytes(rand_tmp, sizeof(rand_tmp));
70 a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
71 if (!TEST_BN_ne_zero(a))
73 test_output_bignum("a", a);
75 /* Client's response */
76 Apub = SRP_Calc_A(a, GN->N, GN->g);
77 test_output_bignum("A", Apub);
79 if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
82 /* Both sides calculate u */
83 u = SRP_Calc_u(Apub, Bpub, GN->N);
86 x = SRP_Calc_x(s, username, client_pass);
87 Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
88 test_output_bignum("Client's key", Kclient);
91 Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
92 test_output_bignum("Server's key", Kserver);
94 if (!TEST_BN_eq(Kclient, Kserver))
100 BN_clear_free(Kclient);
101 BN_clear_free(Kserver);
114 static int check_bn(const char *name, const BIGNUM *bn, const char *hexbn)
119 if (!TEST_true(BN_hex2bn(&tmp, hexbn)))
122 if (BN_cmp(bn, tmp) != 0)
123 TEST_error("unexpected %s value", name);
124 r = TEST_BN_eq(bn, tmp);
129 /* SRP test vectors from RFC5054 */
130 static int run_srp_kat(void)
141 BIGNUM *Kclient = NULL;
142 BIGNUM *Kserver = NULL;
143 /* use builtin 1024-bit params */
146 if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
148 BN_hex2bn(&s, "BEB25379D1A8581EB5A727673A2441EE");
149 /* Set up server's password entry */
150 if (!TEST_true(SRP_create_verifier_BN("alice", "password123", &s, &v, GN->N,
154 TEST_info("checking v");
155 if (!TEST_true(check_bn("v", v,
156 "7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D812"
157 "9BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5"
158 "C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5"
159 "EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78"
160 "E955A5E29E7AB245DB2BE315E2099AFB")))
165 BN_hex2bn(&b, "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D1"
168 /* Server's first message */
169 Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
170 if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
173 TEST_info("checking B");
174 if (!TEST_true(check_bn("B", Bpub,
175 "BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011"
176 "BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC99"
177 "6C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA"
178 "37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAE"
179 "EB4012B7D7665238A8E3FB004B117B58")))
184 BN_hex2bn(&a, "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DD"
187 /* Client's response */
188 Apub = SRP_Calc_A(a, GN->N, GN->g);
189 if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
192 TEST_info("checking A");
193 if (!TEST_true(check_bn("A", Apub,
194 "61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC4"
195 "4352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC"
196 "8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44"
197 "BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEA"
198 "B349EF5D76988A3672FAC47B0769447B")))
202 /* Both sides calculate u */
203 u = SRP_Calc_u(Apub, Bpub, GN->N);
205 if (!TEST_true(check_bn("u", u,
206 "CE38B9593487DA98554ED47D70A7AE5F462EF019")))
210 x = SRP_Calc_x(s, "alice", "password123");
211 Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
212 TEST_info("checking client's key");
213 if (!TEST_true(check_bn("Client's key", Kclient,
214 "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
215 "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
216 "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
217 "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
218 "C346D7E474B29EDE8A469FFECA686E5A")))
223 Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
224 TEST_info("checking server's key");
225 if (!TEST_true(check_bn("Server's key", Kserver,
226 "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
227 "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
228 "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
229 "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
230 "C346D7E474B29EDE8A469FFECA686E5A")))
237 BN_clear_free(Kclient);
238 BN_clear_free(Kserver);
251 static int run_srp_tests(void)
253 /* "Negative" test, expect a mismatch */
254 TEST_info("run_srp: expecting a mismatch");
255 if (!TEST_false(run_srp("alice", "password1", "password2")))
258 /* "Positive" test, should pass */
259 TEST_info("run_srp: expecting a match");
260 if (!TEST_true(run_srp("alice", "password", "password")))
267 int setup_tests(void)
269 #ifdef OPENSSL_NO_SRP
270 printf("No SRP support\n");
272 ADD_TEST(run_srp_tests);
273 ADD_TEST(run_srp_kat);