blob: 4e4ee6d543189d0b66848f4139614be5a19842cb [file] [log] [blame]
Paul Bakker33b43f12013-08-20 11:48:36 +02001/* BEGIN_HEADER */
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +00002#include "mbedtls/ecdsa.h"
Paul Bakker33b43f12013-08-20 11:48:36 +02003/* END_HEADER */
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +01004
Paul Bakker33b43f12013-08-20 11:48:36 +02005/* BEGIN_DEPENDENCIES
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +02006 * depends_on:MBEDTLS_ECDSA_C
Paul Bakker33b43f12013-08-20 11:48:36 +02007 * END_DEPENDENCIES
8 */
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +01009
Paul Bakker33b43f12013-08-20 11:48:36 +020010/* BEGIN_CASE */
11void ecdsa_prim_random( int id )
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010012{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020013 mbedtls_ecp_group grp;
14 mbedtls_ecp_point Q;
15 mbedtls_mpi d, r, s;
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010016 rnd_pseudo_info rnd_info;
17 unsigned char buf[66];
18
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020019 mbedtls_ecp_group_init( &grp );
20 mbedtls_ecp_point_init( &Q );
21 mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010022 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
Manuel Pégourié-Gonnard450a1632013-01-27 09:08:18 +010023 memset( buf, 0, sizeof( buf ) );
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010024
25 /* prepare material for signature */
26 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, buf, sizeof( buf ) ) == 0 );
Manuel Pégourié-Gonnarde3a062b2015-05-11 18:46:47 +020027 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020028 TEST_ASSERT( mbedtls_ecp_gen_keypair( &grp, &d, &Q, &rnd_pseudo_rand, &rnd_info )
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010029 == 0 );
30
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020031 TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, buf, sizeof( buf ),
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010032 &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020033 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, buf, sizeof( buf ), &Q, &r, &s ) == 0 );
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010034
Paul Bakkerbd51b262014-07-10 15:26:12 +020035exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020036 mbedtls_ecp_group_free( &grp );
37 mbedtls_ecp_point_free( &Q );
38 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010039}
Paul Bakker33b43f12013-08-20 11:48:36 +020040/* END_CASE */
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010041
Paul Bakker33b43f12013-08-20 11:48:36 +020042/* BEGIN_CASE */
43void ecdsa_prim_test_vectors( int id, char *d_str, char *xQ_str, char *yQ_str,
44 char *k_str, char *hash_str, char *r_str,
Darryl Greenf5bcbed2017-11-17 17:09:31 +000045 char *s_str, int result )
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010046{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020047 mbedtls_ecp_group grp;
48 mbedtls_ecp_point Q;
49 mbedtls_mpi d, r, s, r_check, s_check;
Manuel Pégourié-Gonnardfae079e2014-01-06 11:00:07 +010050 unsigned char hash[66], rnd_buf[66];
51 size_t hlen;
52 rnd_buf_info rnd_info;
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010053
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020054 mbedtls_ecp_group_init( &grp );
55 mbedtls_ecp_point_init( &Q );
56 mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
57 mbedtls_mpi_init( &r_check ); mbedtls_mpi_init( &s_check );
Manuel Pégourié-Gonnardfae079e2014-01-06 11:00:07 +010058 memset( hash, 0, sizeof( hash ) );
59 memset( rnd_buf, 0, sizeof( rnd_buf ) );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010060
Manuel Pégourié-Gonnarde3a062b2015-05-11 18:46:47 +020061 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020062 TEST_ASSERT( mbedtls_ecp_point_read_string( &Q, 16, xQ_str, yQ_str ) == 0 );
63 TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
64 TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
65 TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
Manuel Pégourié-Gonnardfae079e2014-01-06 11:00:07 +010066 hlen = unhexify(hash, hash_str);
67 rnd_info.buf = rnd_buf;
68 rnd_info.length = unhexify( rnd_buf, k_str );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010069
Manuel Pégourié-Gonnardfae079e2014-01-06 11:00:07 +010070 /* Fix rnd_buf by shifting it left if necessary */
71 if( grp.nbits % 8 != 0 )
72 {
73 unsigned char shift = 8 - ( grp.nbits % 8 );
74 size_t i;
75
76 for( i = 0; i < rnd_info.length - 1; i++ )
77 rnd_buf[i] = rnd_buf[i] << shift | rnd_buf[i+1] >> ( 8 - shift );
78
79 rnd_buf[rnd_info.length-1] <<= shift;
80 }
81
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020082 TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, hash, hlen,
Darryl Greenf5bcbed2017-11-17 17:09:31 +000083 rnd_buffer_rand, &rnd_info ) == result );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010084
Darryl Greenf5bcbed2017-11-17 17:09:31 +000085 if ( result == 0)
86 {
87 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
88 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010089
Darryl Greenf5bcbed2017-11-17 17:09:31 +000090 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen, &Q, &r_check, &s_check ) == 0 );
91 }
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010092
Manuel Pégourié-Gonnard1ed25052017-04-21 10:04:02 +020093 TEST_ASSERT( mbedtls_mpi_sub_int( &r, &r, 1 ) == 0 );
94 TEST_ASSERT( mbedtls_mpi_add_int( &s, &s, 1 ) == 0 );
95
96 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen,
97 &Q, &r, &s_check ) == MBEDTLS_ERR_ECP_VERIFY_FAILED );
98 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen,
99 &Q, &r_check, &s ) == MBEDTLS_ERR_ECP_VERIFY_FAILED );
100 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen,
101 &grp.G, &r_check, &s_check ) == MBEDTLS_ERR_ECP_VERIFY_FAILED );
102
Paul Bakkerbd51b262014-07-10 15:26:12 +0200103exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200104 mbedtls_ecp_group_free( &grp );
105 mbedtls_ecp_point_free( &Q );
106 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
107 mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +0100108}
Paul Bakker33b43f12013-08-20 11:48:36 +0200109/* END_CASE */
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200110
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200111/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_DETERMINISTIC */
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100112void ecdsa_det_test_vectors( int id, char *d_str, int md_alg,
113 char *msg, char *r_str, char *s_str )
114{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200115 mbedtls_ecp_group grp;
116 mbedtls_mpi d, r, s, r_check, s_check;
117 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100118 size_t hlen;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200119 const mbedtls_md_info_t *md_info;
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100120
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200121 mbedtls_ecp_group_init( &grp );
122 mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
123 mbedtls_mpi_init( &r_check ); mbedtls_mpi_init( &s_check );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100124 memset( hash, 0, sizeof( hash ) );
125
Manuel Pégourié-Gonnarde3a062b2015-05-11 18:46:47 +0200126 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200127 TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
128 TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
129 TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100130
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200131 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200132 TEST_ASSERT( md_info != NULL );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200133 hlen = mbedtls_md_get_size( md_info );
134 mbedtls_md( md_info, (const unsigned char *) msg, strlen( msg ), hash );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100135
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200136 TEST_ASSERT( mbedtls_ecdsa_sign_det( &grp, &r, &s, &d, hash, hlen, md_alg ) == 0 );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100137
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200138 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
139 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100140
Paul Bakkerbd51b262014-07-10 15:26:12 +0200141exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200142 mbedtls_ecp_group_free( &grp );
143 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
144 mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100145}
146/* END_CASE */
147
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200148/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200149void ecdsa_write_read_random( int id )
150{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200151 mbedtls_ecdsa_context ctx;
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200152 rnd_pseudo_info rnd_info;
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +0200153 unsigned char hash[32];
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200154 unsigned char sig[200];
155 size_t sig_len, i;
156
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200157 mbedtls_ecdsa_init( &ctx );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200158 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
159 memset( hash, 0, sizeof( hash ) );
160 memset( sig, 0x2a, sizeof( sig ) );
161
162 /* prepare material for signature */
163 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, hash, sizeof( hash ) ) == 0 );
164
165 /* generate signing key */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200166 TEST_ASSERT( mbedtls_ecdsa_genkey( &ctx, id, &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200167
168 /* generate and write signature, then read and verify it */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200169 TEST_ASSERT( mbedtls_ecdsa_write_signature( &ctx, MBEDTLS_MD_SHA256,
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +0200170 hash, sizeof( hash ),
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200171 sig, &sig_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200172 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200173 sig, sig_len ) == 0 );
174
175 /* check we didn't write past the announced length */
176 for( i = sig_len; i < sizeof( sig ); i++ )
177 TEST_ASSERT( sig[i] == 0x2a );
178
179 /* try verification with invalid length */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200180 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200181 sig, sig_len - 1 ) != 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200182 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200183 sig, sig_len + 1 ) != 0 );
184
185 /* try invalid sequence tag */
186 sig[0]++;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200187 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200188 sig, sig_len ) != 0 );
189 sig[0]--;
190
191 /* try modifying r */
192 sig[10]++;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200193 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnard1ed25052017-04-21 10:04:02 +0200194 sig, sig_len ) == MBEDTLS_ERR_ECP_VERIFY_FAILED );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200195 sig[10]--;
196
197 /* try modifying s */
198 sig[sig_len - 1]++;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200199 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
Manuel Pégourié-Gonnard1ed25052017-04-21 10:04:02 +0200200 sig, sig_len ) == MBEDTLS_ERR_ECP_VERIFY_FAILED );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200201 sig[sig_len - 1]--;
202
Paul Bakkerbd51b262014-07-10 15:26:12 +0200203exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200204 mbedtls_ecdsa_free( &ctx );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200205}
206/* END_CASE */
Manuel Pégourié-Gonnard937340b2014-01-06 10:27:16 +0100207
Manuel Pégourié-Gonnard722e5152017-04-21 11:04:47 +0200208/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */
209void ecdsa_read_restart( int id, char *k_str, char *h_str, char *s_str,
210 int max_ops, int min_restart, int max_restart )
211{
212 mbedtls_ecdsa_context ctx;
213 mbedtls_ecdsa_restart_ctx rs_ctx;
214 unsigned char hash[64];
215 unsigned char sig[200];
216 unsigned char pk[65];
217 size_t sig_len, hash_len, pk_len;
218 int ret, cnt_restart;
219
220 mbedtls_ecdsa_init( &ctx );
221 mbedtls_ecdsa_restart_init( &rs_ctx );
222
223 hash_len = unhexify(hash, h_str);
224 sig_len = unhexify(sig, s_str);
225 pk_len = unhexify(pk, k_str);
226
227 TEST_ASSERT( mbedtls_ecp_group_load( &ctx.grp, id ) == 0 );
228 TEST_ASSERT( mbedtls_ecp_point_read_binary( &ctx.grp, &ctx.Q, pk, pk_len ) == 0 );
229
230 mbedtls_ecp_set_max_ops( max_ops );
231
232 cnt_restart = 0;
233 do {
234 ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
235 hash, hash_len, sig, sig_len, &rs_ctx );
236 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
237
238 TEST_ASSERT( ret == 0 );
239 TEST_ASSERT( cnt_restart >= min_restart );
240 TEST_ASSERT( cnt_restart <= max_restart );
241
242 /* try modifying r */
243 sig[10]++;
244 do {
245 ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
246 hash, hash_len, sig, sig_len, &rs_ctx );
247 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
248 TEST_ASSERT( ret == MBEDTLS_ERR_ECP_VERIFY_FAILED );
249 sig[10]--;
250
251 /* try modifying s */
252 sig[sig_len - 1]++;
253 do {
254 ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
255 hash, hash_len, sig, sig_len, &rs_ctx );
256 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
257 TEST_ASSERT( ret == MBEDTLS_ERR_ECP_VERIFY_FAILED );
258 sig[sig_len - 1]--;
259
Manuel Pégourié-Gonnard46ba7f32017-08-28 12:20:39 +0200260 /* Do we leak memory when aborting an operation?
261 * This test only makes sense when we actually restart */
262 if( min_restart > 0 )
263 {
264 ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
265 hash, hash_len, sig, sig_len, &rs_ctx );
266 TEST_ASSERT( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
267 }
Manuel Pégourié-Gonnard722e5152017-04-21 11:04:47 +0200268
269exit:
270 mbedtls_ecdsa_free( &ctx );
271 mbedtls_ecdsa_restart_free( &rs_ctx );
272}
273/* END_CASE */
Manuel Pégourié-Gonnardeb402f32017-04-25 10:57:30 +0200274
275/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE:MBEDTLS_ECDSA_DETERMINISTIC */
276void ecdsa_write_restart( int id, char *d_str, int md_alg,
277 char *msg, char *sig_str,
278 int max_ops, int min_restart, int max_restart )
279{
280 int ret, cnt_restart;
281 mbedtls_ecdsa_restart_ctx rs_ctx;
282 mbedtls_ecdsa_context ctx;
283 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
284 unsigned char sig[MBEDTLS_ECDSA_MAX_LEN];
285 unsigned char sig_check[MBEDTLS_ECDSA_MAX_LEN];
286 size_t hlen, slen, slen_check;
287 const mbedtls_md_info_t *md_info;
288
289 mbedtls_ecdsa_restart_init( &rs_ctx );
290 mbedtls_ecdsa_init( &ctx );
291 memset( hash, 0, sizeof( hash ) );
292 memset( sig, 0, sizeof( sig ) );
293 memset( sig_check, 0, sizeof( sig_check ) );
294
295 TEST_ASSERT( mbedtls_ecp_group_load( &ctx.grp, id ) == 0 );
296 TEST_ASSERT( mbedtls_mpi_read_string( &ctx.d, 16, d_str ) == 0 );
297 slen_check = unhexify( sig_check, sig_str );
298
299 md_info = mbedtls_md_info_from_type( md_alg );
300 TEST_ASSERT( md_info != NULL );
301
302 hlen = mbedtls_md_get_size( md_info );
303 mbedtls_md( md_info, (const unsigned char *) msg, strlen( msg ), hash );
304
305 mbedtls_ecp_set_max_ops( max_ops );
306
307 slen = sizeof( sig );
308 cnt_restart = 0;
309 do {
310 ret = mbedtls_ecdsa_write_signature_restartable( &ctx,
311 md_alg, hash, hlen, sig, &slen, NULL, NULL, &rs_ctx );
312 } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
313
314 TEST_ASSERT( ret == 0 );
315 TEST_ASSERT( slen == slen_check );
316 TEST_ASSERT( memcmp( sig, sig_check, slen ) == 0 );
317
318 TEST_ASSERT( cnt_restart >= min_restart );
319 TEST_ASSERT( cnt_restart <= max_restart );
320
Manuel Pégourié-Gonnard46ba7f32017-08-28 12:20:39 +0200321 /* Do we leak memory when aborting an operation?
322 * This test only makes sense when we actually restart */
323 if( min_restart > 0 )
324 {
325 ret = mbedtls_ecdsa_write_signature_restartable( &ctx,
326 md_alg, hash, hlen, sig, &slen, NULL, NULL, &rs_ctx );
327 TEST_ASSERT( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
328 }
Manuel Pégourié-Gonnardeb402f32017-04-25 10:57:30 +0200329
330exit:
331 mbedtls_ecdsa_restart_free( &rs_ctx );
332 mbedtls_ecdsa_free( &ctx );
333}
334/* END_CASE */