blob: 7144763a253dd151816d31d17158abc00c8c1dd2 [file] [log] [blame]
Paul Bakker33b43f12013-08-20 11:48:36 +02001/* BEGIN_HEADER */
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +00002#include "mbedtls/ecdh.h"
Paul Bakker33b43f12013-08-20 11:48:36 +02003/* END_HEADER */
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +01004
Paul Bakker33b43f12013-08-20 11:48:36 +02005/* BEGIN_DEPENDENCIES
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +02006 * depends_on:MBEDTLS_ECDH_C
Paul Bakker33b43f12013-08-20 11:48:36 +02007 * END_DEPENDENCIES
8 */
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +01009
Paul Bakker33b43f12013-08-20 11:48:36 +020010/* BEGIN_CASE */
11void ecdh_primitive_random( int id )
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010012{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020013 mbedtls_ecp_group grp;
14 mbedtls_ecp_point qA, qB;
15 mbedtls_mpi dA, dB, zA, zB;
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010016 rnd_pseudo_info rnd_info;
17
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020018 mbedtls_ecp_group_init( &grp );
19 mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
20 mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
21 mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010022 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
23
Manuel Pégourié-Gonnarde3a062b2015-05-11 18:46:47 +020024 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010025
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020026 TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA, &rnd_pseudo_rand, &rnd_info )
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010027 == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020028 TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010029 == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020030 TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA,
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +020031 &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020032 TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB,
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +020033 NULL, NULL ) == 0 );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010034
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020035 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &zB ) == 0 );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010036
Paul Bakkerbd51b262014-07-10 15:26:12 +020037exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020038 mbedtls_ecp_group_free( &grp );
39 mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
40 mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
41 mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010042}
Paul Bakker33b43f12013-08-20 11:48:36 +020043/* END_CASE */
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010044
Paul Bakker33b43f12013-08-20 11:48:36 +020045/* BEGIN_CASE */
Azim Khan5fcca462018-06-29 11:05:32 +010046void ecdh_primitive_testvec( int id, data_t * rnd_buf_A, char * xA_str,
47 char * yA_str, data_t * rnd_buf_B,
Azim Khand30ca132017-06-09 04:32:58 +010048 char * xB_str, char * yB_str, char * z_str )
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010049{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020050 mbedtls_ecp_group grp;
51 mbedtls_ecp_point qA, qB;
52 mbedtls_mpi dA, dB, zA, zB, check;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010053 rnd_buf_info rnd_info_A, rnd_info_B;
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010054
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020055 mbedtls_ecp_group_init( &grp );
56 mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
57 mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
58 mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB ); mbedtls_mpi_init( &check );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010059
Manuel Pégourié-Gonnarde3a062b2015-05-11 18:46:47 +020060 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010061
Azim Khand30ca132017-06-09 04:32:58 +010062 rnd_info_A.buf = rnd_buf_A->x;
63 rnd_info_A.length = rnd_buf_A->len;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010064
Azim Khand30ca132017-06-09 04:32:58 +010065 /* Fix rnd_buf_A->x by shifting it left if necessary */
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010066 if( grp.nbits % 8 != 0 )
67 {
68 unsigned char shift = 8 - ( grp.nbits % 8 );
69 size_t i;
70
71 for( i = 0; i < rnd_info_A.length - 1; i++ )
Azim Khand30ca132017-06-09 04:32:58 +010072 rnd_buf_A->x[i] = rnd_buf_A->x[i] << shift
73 | rnd_buf_A->x[i+1] >> ( 8 - shift );
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010074
Azim Khand30ca132017-06-09 04:32:58 +010075 rnd_buf_A->x[rnd_info_A.length-1] <<= shift;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010076 }
77
Azim Khand30ca132017-06-09 04:32:58 +010078 rnd_info_B.buf = rnd_buf_B->x;
79 rnd_info_B.length = rnd_buf_B->len;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010080
Azim Khand30ca132017-06-09 04:32:58 +010081 /* Fix rnd_buf_B->x by shifting it left if necessary */
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010082 if( grp.nbits % 8 != 0 )
83 {
84 unsigned char shift = 8 - ( grp.nbits % 8 );
85 size_t i;
86
87 for( i = 0; i < rnd_info_B.length - 1; i++ )
Azim Khand30ca132017-06-09 04:32:58 +010088 rnd_buf_B->x[i] = rnd_buf_B->x[i] << shift
89 | rnd_buf_B->x[i+1] >> ( 8 - shift );
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010090
Azim Khand30ca132017-06-09 04:32:58 +010091 rnd_buf_B->x[rnd_info_B.length-1] <<= shift;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010092 }
93
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020094 TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA,
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010095 rnd_buffer_rand, &rnd_info_A ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020096 TEST_ASSERT( ! mbedtls_ecp_is_zero( &qA ) );
97 TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xA_str ) == 0 );
98 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.X, &check ) == 0 );
99 TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yA_str ) == 0 );
100 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.Y, &check ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100101
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200102 TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB,
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +0100103 rnd_buffer_rand, &rnd_info_B ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200104 TEST_ASSERT( ! mbedtls_ecp_is_zero( &qB ) );
105 TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xB_str ) == 0 );
106 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.X, &check ) == 0 );
107 TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yB_str ) == 0 );
108 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.Y, &check ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100109
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200110 TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, z_str ) == 0 );
111 TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
112 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &check ) == 0 );
113 TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
114 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zB, &check ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100115
Paul Bakkerbd51b262014-07-10 15:26:12 +0200116exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200117 mbedtls_ecp_group_free( &grp );
118 mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
119 mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
120 mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB ); mbedtls_mpi_free( &check );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100121}
Paul Bakker33b43f12013-08-20 11:48:36 +0200122/* END_CASE */
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100123
Paul Bakker33b43f12013-08-20 11:48:36 +0200124/* BEGIN_CASE */
125void ecdh_exchange( int id )
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100126{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200127 mbedtls_ecdh_context srv, cli;
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100128 unsigned char buf[1000];
129 const unsigned char *vbuf;
130 size_t len;
131 rnd_pseudo_info rnd_info;
Janos Follath36c5f7f2018-10-30 14:08:52 +0000132 unsigned char res_buf[1000];
133 size_t res_len;
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100134
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200135 mbedtls_ecdh_init( &srv );
136 mbedtls_ecdh_init( &cli );
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100137 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
138
Janos Follathfc03e8d2018-10-04 17:17:54 +0100139 TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 );
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100140
141 memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200142 TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000,
Janos Follathfc03e8d2018-10-04 17:17:54 +0100143 &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200144 TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100145
Manuel Pégourié-Gonnard424fda52013-02-11 22:05:42 +0100146 memset( buf, 0x00, sizeof( buf ) );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200147 TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000,
Janos Follathfc03e8d2018-10-04 17:17:54 +0100148 &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200149 TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
Manuel Pégourié-Gonnard5cceb412013-02-11 21:51:45 +0100150
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200151 TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000,
Janos Follath36c5f7f2018-10-30 14:08:52 +0000152 &rnd_pseudo_rand, &rnd_info ) == 0 );
153 TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &res_len, res_buf, 1000,
154 NULL, NULL ) == 0 );
155 TEST_ASSERT( len == res_len );
156 TEST_ASSERT( memcmp( buf, res_buf, len ) == 0 );
Manuel Pégourié-Gonnard424fda52013-02-11 22:05:42 +0100157
Paul Bakkerbd51b262014-07-10 15:26:12 +0200158exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200159 mbedtls_ecdh_free( &srv );
160 mbedtls_ecdh_free( &cli );
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100161}
Paul Bakker33b43f12013-08-20 11:48:36 +0200162/* END_CASE */
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200163
164/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */
165void ecdh_restart( int id, char *dA_str, char *dB_str, char *z_str,
Manuel Pégourié-Gonnard23e41622017-05-18 12:35:37 +0200166 int enable, int max_ops, int min_restart, int max_restart )
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200167{
168 int ret;
169 mbedtls_ecdh_context srv, cli;
170 unsigned char buf[1000];
171 const unsigned char *vbuf;
172 size_t len;
173 unsigned char z[MBEDTLS_ECP_MAX_BYTES];
174 size_t z_len;
175 unsigned char rnd_buf_A[MBEDTLS_ECP_MAX_BYTES];
176 unsigned char rnd_buf_B[MBEDTLS_ECP_MAX_BYTES];
177 rnd_buf_info rnd_info_A, rnd_info_B;
178 int cnt_restart;
Janos Follath36c5f7f2018-10-30 14:08:52 +0000179 mbedtls_ecp_group grp;
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200180
Janos Follath36c5f7f2018-10-30 14:08:52 +0000181 mbedtls_ecp_group_init( &grp );
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200182 mbedtls_ecdh_init( &srv );
183 mbedtls_ecdh_init( &cli );
184
185 z_len = unhexify( z, z_str );
186
187 rnd_info_A.buf = rnd_buf_A;
188 rnd_info_A.length = unhexify( rnd_buf_A, dA_str );
189
190 rnd_info_B.buf = rnd_buf_B;
191 rnd_info_B.length = unhexify( rnd_buf_B, dB_str );
192
Janos Follath36c5f7f2018-10-30 14:08:52 +0000193 /* The ECDH context is not guaranteed ot have an mbedtls_ecp_group structure
194 * in every configuration, therefore we load it separately. */
195 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200196
Janos Follath36c5f7f2018-10-30 14:08:52 +0000197 /* Otherwise we would have to fix the random buffer,
198 * as in ecdh_primitive_testvec. */
199 TEST_ASSERT( grp.nbits % 8 == 0 );
200
201 TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 );
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200202
Manuel Pégourié-Gonnard23e41622017-05-18 12:35:37 +0200203 /* set up restart parameters */
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200204 mbedtls_ecp_set_max_ops( max_ops );
205
Janos Follath36c5f7f2018-10-30 14:08:52 +0000206 if( enable )
Manuel Pégourié-Gonnard23e41622017-05-18 12:35:37 +0200207 {
208 mbedtls_ecdh_enable_restart( &srv );
209 mbedtls_ecdh_enable_restart( &cli );
210 }
211
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200212 /* server writes its paramaters */
213 memset( buf, 0x00, sizeof( buf ) );
214 len = 0;
215
216 cnt_restart = 0;
217 do {
218 ret = mbedtls_ecdh_make_params( &srv, &len, buf, sizeof( buf ),
219 rnd_buffer_rand, &rnd_info_A );
220 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
221
222 TEST_ASSERT( ret == 0 );
223 TEST_ASSERT( cnt_restart >= min_restart );
224 TEST_ASSERT( cnt_restart <= max_restart );
225
226 /* client read server params */
227 vbuf = buf;
228 TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
229
230 /* client writes its key share */
231 memset( buf, 0x00, sizeof( buf ) );
232 len = 0;
233
234 cnt_restart = 0;
235 do {
236 ret = mbedtls_ecdh_make_public( &cli, &len, buf, sizeof( buf ),
237 rnd_buffer_rand, &rnd_info_B );
238 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
239
240 TEST_ASSERT( ret == 0 );
241 TEST_ASSERT( cnt_restart >= min_restart );
242 TEST_ASSERT( cnt_restart <= max_restart );
243
244 /* server reads client key share */
245 TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
246
247 /* server computes shared secret */
248 memset( buf, 0, sizeof( buf ) );
249 len = 0;
250
251 cnt_restart = 0;
252 do {
253 ret = mbedtls_ecdh_calc_secret( &srv, &len, buf, sizeof( buf ),
254 NULL, NULL );
255 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
256
257 TEST_ASSERT( ret == 0 );
258 TEST_ASSERT( cnt_restart >= min_restart );
259 TEST_ASSERT( cnt_restart <= max_restart );
260
261 TEST_ASSERT( len == z_len );
262 TEST_ASSERT( memcmp( buf, z, len ) == 0 );
263
264 /* client computes shared secret */
265 memset( buf, 0, sizeof( buf ) );
266 len = 0;
267
268 cnt_restart = 0;
269 do {
270 ret = mbedtls_ecdh_calc_secret( &cli, &len, buf, sizeof( buf ),
271 NULL, NULL );
272 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
273
274 TEST_ASSERT( ret == 0 );
275 TEST_ASSERT( cnt_restart >= min_restart );
276 TEST_ASSERT( cnt_restart <= max_restart );
277
278 TEST_ASSERT( len == z_len );
279 TEST_ASSERT( memcmp( buf, z, len ) == 0 );
280
281exit:
Janos Follath36c5f7f2018-10-30 14:08:52 +0000282 mbedtls_ecp_group_free( &grp );
Manuel Pégourié-Gonnard71b2c532017-04-27 10:38:52 +0200283 mbedtls_ecdh_free( &srv );
284 mbedtls_ecdh_free( &cli );
285}
286/* END_CASE */
Janos Follathfc03e8d2018-10-04 17:17:54 +0100287
Janos Follath36c5f7f2018-10-30 14:08:52 +0000288/* BEGIN_CASE depends_on:MBEDTLS_ECDH_LEGACY_CONTEXT */
Janos Follathfc03e8d2018-10-04 17:17:54 +0100289void ecdh_exchange_legacy( int id )
290{
291 mbedtls_ecdh_context srv, cli;
292 unsigned char buf[1000];
293 const unsigned char *vbuf;
294 size_t len;
295
296 rnd_pseudo_info rnd_info;
297
298 mbedtls_ecdh_init( &srv );
299 mbedtls_ecdh_init( &cli );
300 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
301
302 TEST_ASSERT( mbedtls_ecp_group_load( &srv.grp, id ) == 0 );
303
304 memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
305 TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000,
306 &rnd_pseudo_rand, &rnd_info ) == 0 );
307 TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
308
309 memset( buf, 0x00, sizeof( buf ) );
310 TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000,
311 &rnd_pseudo_rand, &rnd_info ) == 0 );
312 TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
313
314 TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000,
315 &rnd_pseudo_rand, &rnd_info ) == 0 );
316 TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &len, buf, 1000, NULL,
317 NULL ) == 0 );
318 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &srv.z, &cli.z ) == 0 );
319
320exit:
321 mbedtls_ecdh_free( &srv );
322 mbedtls_ecdh_free( &cli );
323}
324/* END_CASE */