2 * Copyright 2011-2016 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 static void showbn(const char *name, const BIGNUM *bn)
26 if (!TEST_ptr(b = BIO_new(BIO_s_mem())))
28 BIO_write(b, name, strlen(name));
29 BIO_write(b, " = ", 3);
31 BIO_write(b, "\0", 1);
32 BIO_get_mem_data(b, &text);
33 TEST_info("%s", text);
37 # define RANDOM_SIZE 32 /* use 256 bits on each side */
39 static int run_srp(const char *username, const char *client_pass,
40 const char *server_pass)
51 BIGNUM *Kclient = NULL;
52 BIGNUM *Kserver = NULL;
53 unsigned char rand_tmp[RANDOM_SIZE];
54 /* use builtin 1024-bit params */
57 if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
60 /* Set up server's password entry */
61 if (!TEST_true(SRP_create_verifier_BN(username, server_pass,
62 &s, &v, GN->N, GN->g)))
68 showbn("Verifier", v);
71 RAND_bytes(rand_tmp, sizeof(rand_tmp));
72 b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
73 if (!TEST_BN_ne_zero(b))
77 /* Server's first message */
78 Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
81 if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
85 RAND_bytes(rand_tmp, sizeof(rand_tmp));
86 a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
87 if (!TEST_BN_ne_zero(a))
91 /* Client's response */
92 Apub = SRP_Calc_A(a, GN->N, GN->g);
95 if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
98 /* Both sides calculate u */
99 u = SRP_Calc_u(Apub, Bpub, GN->N);
102 x = SRP_Calc_x(s, username, client_pass);
103 Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
104 showbn("Client's key", Kclient);
107 Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
108 showbn("Server's key", Kserver);
110 if (!TEST_BN_eq(Kclient, Kserver))
116 BN_clear_free(Kclient);
117 BN_clear_free(Kserver);
130 static int check_bn(const char *name, const BIGNUM *bn, const char *hexbn)
135 if (!TEST_true(BN_hex2bn(&tmp, hexbn)))
138 if (BN_cmp(bn, tmp) != 0)
139 TEST_error("unexpected %s value", name);
140 r = TEST_BN_eq(bn, tmp);
145 /* SRP test vectors from RFC5054 */
146 static int run_srp_kat(void)
157 BIGNUM *Kclient = NULL;
158 BIGNUM *Kserver = NULL;
159 /* use builtin 1024-bit params */
162 if (!TEST_ptr(GN = SRP_get_default_gN("1024")))
164 BN_hex2bn(&s, "BEB25379D1A8581EB5A727673A2441EE");
165 /* Set up server's password entry */
166 if (!TEST_true(SRP_create_verifier_BN("alice", "password123", &s, &v, GN->N,
170 if (!TEST_true(check_bn("v", v,
171 "7E273DE8696FFC4F4E337D05B4B375BEB0DDE1569E8FA00A9886D812"
172 "9BADA1F1822223CA1A605B530E379BA4729FDC59F105B4787E5186F5"
173 "C671085A1447B52A48CF1970B4FB6F8400BBF4CEBFBB168152E08AB5"
174 "EA53D15C1AFF87B2B9DA6E04E058AD51CC72BFC9033B564E26480D78"
175 "E955A5E29E7AB245DB2BE315E2099AFB")))
179 BN_hex2bn(&b, "E487CB59D31AC550471E81F00F6928E01DDA08E974A004F49E61F5D1"
182 /* Server's first message */
183 Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
184 if (!TEST_true(SRP_Verify_B_mod_N(Bpub, GN->N)))
187 if (!TEST_true(check_bn("B", Bpub,
188 "BD0C61512C692C0CB6D041FA01BB152D4916A1E77AF46AE105393011"
189 "BAF38964DC46A0670DD125B95A981652236F99D9B681CBF87837EC99"
190 "6C6DA04453728610D0C6DDB58B318885D7D82C7F8DEB75CE7BD4FBAA"
191 "37089E6F9C6059F388838E7A00030B331EB76840910440B1B27AAEAE"
192 "EB4012B7D7665238A8E3FB004B117B58")))
196 BN_hex2bn(&a, "60975527035CF2AD1989806F0407210BC81EDC04E2762A56AFD529DD"
199 /* Client's response */
200 Apub = SRP_Calc_A(a, GN->N, GN->g);
201 if (!TEST_true(SRP_Verify_A_mod_N(Apub, GN->N)))
204 if (!TEST_true(check_bn("A", Apub,
205 "61D5E490F6F1B79547B0704C436F523DD0E560F0C64115BB72557EC4"
206 "4352E8903211C04692272D8B2D1A5358A2CF1B6E0BFCF99F921530EC"
207 "8E39356179EAE45E42BA92AEACED825171E1E8B9AF6D9C03E1327F44"
208 "BE087EF06530E69F66615261EEF54073CA11CF5858F0EDFDFE15EFEA"
209 "B349EF5D76988A3672FAC47B0769447B")))
212 /* Both sides calculate u */
213 u = SRP_Calc_u(Apub, Bpub, GN->N);
215 if (!TEST_true(check_bn("u", u,
216 "CE38B9593487DA98554ED47D70A7AE5F462EF019")))
220 x = SRP_Calc_x(s, "alice", "password123");
221 Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
222 if (!TEST_true(check_bn("Client's key", Kclient,
223 "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
224 "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
225 "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
226 "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
227 "C346D7E474B29EDE8A469FFECA686E5A")))
231 Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
232 if (!TEST_true(check_bn("Server's key", Kserver,
233 "B0DC82BABCF30674AE450C0287745E7990A3381F63B387AAF271A10D"
234 "233861E359B48220F7C4693C9AE12B0A6F67809F0876E2D013800D6C"
235 "41BB59B6D5979B5C00A172B4A2A5903A0BDCAF8A709585EB2AFAFA8F"
236 "3499B200210DCC1F10EB33943CD67FC88A2F39A4BE5BEC4EC0A3212D"
237 "C346D7E474B29EDE8A469FFECA686E5A")))
243 BN_clear_free(Kclient);
244 BN_clear_free(Kserver);
257 static int run_srp_tests(void)
259 /* "Negative" test, expect a mismatch */
260 if (!TEST_false(run_srp("alice", "password1", "password2")))
263 /* "Positive" test, should pass */
264 if (!TEST_true(run_srp("alice", "password", "password")))
271 void register_tests(void)
273 #ifdef OPENSSL_NO_SRP
274 printf("No SRP support\n");
276 ADD_TEST(run_srp_tests);
277 ADD_TEST(run_srp_kat);