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Paul Bakker33b43f12013-08-20 11:48:36 +02001/* BEGIN_HEADER */
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +01002#include <polarssl/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-Gonnarda0f07472013-08-23 16:35:32 +02006 * depends_on:POLARSSL_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{
13 ecp_group grp;
14 ecp_point Q;
15 mpi d, r, s;
16 rnd_pseudo_info rnd_info;
17 unsigned char buf[66];
18
19 ecp_group_init( &grp );
20 ecp_point_init( &Q );
21 mpi_init( &d ); mpi_init( &r ); mpi_init( &s );
22 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 );
Paul Bakker33b43f12013-08-20 11:48:36 +020027 TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010028 TEST_ASSERT( ecp_gen_keypair( &grp, &d, &Q, &rnd_pseudo_rand, &rnd_info )
29 == 0 );
30
31 TEST_ASSERT( ecdsa_sign( &grp, &r, &s, &d, buf, sizeof( buf ),
32 &rnd_pseudo_rand, &rnd_info ) == 0 );
33 TEST_ASSERT( ecdsa_verify( &grp, buf, sizeof( buf ), &Q, &r, &s ) == 0 );
34
Paul Bakkerbd51b262014-07-10 15:26:12 +020035exit:
Manuel Pégourié-Gonnardd1c71502013-01-26 19:09:07 +010036 ecp_group_free( &grp );
37 ecp_point_free( &Q );
38 mpi_free( &d ); mpi_free( &r ); mpi_free( &s );
39}
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,
45 char *s_str )
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010046{
47 ecp_group grp;
48 ecp_point Q;
49 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
54 ecp_group_init( &grp );
55 ecp_point_init( &Q );
56 mpi_init( &d ); mpi_init( &r ); mpi_init( &s );
57 mpi_init( &r_check ); 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
Paul Bakker33b43f12013-08-20 11:48:36 +020061 TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
62 TEST_ASSERT( ecp_point_read_string( &Q, 16, xQ_str, yQ_str ) == 0 );
63 TEST_ASSERT( mpi_read_string( &d, 16, d_str ) == 0 );
64 TEST_ASSERT( mpi_read_string( &r_check, 16, r_str ) == 0 );
65 TEST_ASSERT( 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
82 TEST_ASSERT( ecdsa_sign( &grp, &r, &s, &d, hash, hlen,
83 rnd_buffer_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010084
85 TEST_ASSERT( mpi_cmp_mpi( &r, &r_check ) == 0 );
86 TEST_ASSERT( mpi_cmp_mpi( &s, &s_check ) == 0 );
87
Manuel Pégourié-Gonnardfae079e2014-01-06 11:00:07 +010088 TEST_ASSERT( ecdsa_verify( &grp, hash, hlen, &Q, &r_check, &s_check ) == 0 );
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010089
Paul Bakkerbd51b262014-07-10 15:26:12 +020090exit:
Manuel Pégourié-Gonnard602a8972013-01-27 08:10:28 +010091 ecp_group_free( &grp );
92 ecp_point_free( &Q );
93 mpi_free( &d ); mpi_free( &r ); mpi_free( &s );
94 mpi_free( &r_check ); mpi_free( &s_check );
95}
Paul Bakker33b43f12013-08-20 11:48:36 +020096/* END_CASE */
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +020097
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +010098/* BEGIN_CASE depends_on:POLARSSL_ECDSA_DETERMINISTIC */
99void ecdsa_det_test_vectors( int id, char *d_str, int md_alg,
100 char *msg, char *r_str, char *s_str )
101{
102 ecp_group grp;
103 mpi d, r, s, r_check, s_check;
104 unsigned char hash[POLARSSL_MD_MAX_SIZE];
105 size_t hlen;
106 const md_info_t *md_info;
107
108 ecp_group_init( &grp );
109 mpi_init( &d ); mpi_init( &r ); mpi_init( &s );
110 mpi_init( &r_check ); mpi_init( &s_check );
111 memset( hash, 0, sizeof( hash ) );
112
113 TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
114 TEST_ASSERT( mpi_read_string( &d, 16, d_str ) == 0 );
115 TEST_ASSERT( mpi_read_string( &r_check, 16, r_str ) == 0 );
116 TEST_ASSERT( mpi_read_string( &s_check, 16, s_str ) == 0 );
117
Paul Bakker94b916c2014-04-17 16:07:20 +0200118 md_info = md_info_from_type( md_alg );
119 TEST_ASSERT( md_info != NULL );
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100120 hlen = md_info->size;
121 md( md_info, (const unsigned char *) msg, strlen( msg ), hash );
122
123 TEST_ASSERT( ecdsa_sign_det( &grp, &r, &s, &d, hash, hlen, md_alg ) == 0 );
124
125 TEST_ASSERT( mpi_cmp_mpi( &r, &r_check ) == 0 );
126 TEST_ASSERT( mpi_cmp_mpi( &s, &s_check ) == 0 );
127
Paul Bakkerbd51b262014-07-10 15:26:12 +0200128exit:
Manuel Pégourié-Gonnard4daaef72014-01-06 14:25:56 +0100129 ecp_group_free( &grp );
130 mpi_free( &d ); mpi_free( &r ); mpi_free( &s );
131 mpi_free( &r_check ); mpi_free( &s_check );
132}
133/* END_CASE */
134
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200135/* BEGIN_CASE */
136void ecdsa_write_read_random( int id )
137{
138 ecdsa_context ctx;
139 rnd_pseudo_info rnd_info;
140 unsigned char hash[66];
141 unsigned char sig[200];
142 size_t sig_len, i;
143
144 ecdsa_init( &ctx );
145 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
146 memset( hash, 0, sizeof( hash ) );
147 memset( sig, 0x2a, sizeof( sig ) );
148
149 /* prepare material for signature */
150 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, hash, sizeof( hash ) ) == 0 );
151
152 /* generate signing key */
Manuel Pégourié-Gonnard8eebd012013-08-09 16:21:34 +0200153 TEST_ASSERT( ecdsa_genkey( &ctx, id, &rnd_pseudo_rand, &rnd_info ) == 0 );
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200154
155 /* generate and write signature, then read and verify it */
156 TEST_ASSERT( ecdsa_write_signature( &ctx, hash, sizeof( hash ),
157 sig, &sig_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
158 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
159 sig, sig_len ) == 0 );
160
161 /* check we didn't write past the announced length */
162 for( i = sig_len; i < sizeof( sig ); i++ )
163 TEST_ASSERT( sig[i] == 0x2a );
164
165 /* try verification with invalid length */
166 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
167 sig, sig_len - 1 ) != 0 );
168 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
169 sig, sig_len + 1 ) != 0 );
170
171 /* try invalid sequence tag */
172 sig[0]++;
173 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
174 sig, sig_len ) != 0 );
175 sig[0]--;
176
177 /* try modifying r */
178 sig[10]++;
179 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
180 sig, sig_len ) != 0 );
181 sig[10]--;
182
183 /* try modifying s */
184 sig[sig_len - 1]++;
185 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
186 sig, sig_len ) != 0 );
187 sig[sig_len - 1]--;
188
Paul Bakkerbd51b262014-07-10 15:26:12 +0200189exit:
Manuel Pégourié-Gonnardb694b482013-08-08 13:30:57 +0200190 ecdsa_free( &ctx );
191}
192/* END_CASE */
Manuel Pégourié-Gonnard937340b2014-01-06 10:27:16 +0100193
Manuel Pégourié-Gonnarda56d3632014-01-23 17:50:56 +0100194/* BEGIN_CASE depends_on:POLARSSL_ECDSA_DETERMINISTIC */
Manuel Pégourié-Gonnard937340b2014-01-06 10:27:16 +0100195void ecdsa_write_read_det_random( int id, int md_alg )
196{
197 ecdsa_context ctx;
198 rnd_pseudo_info rnd_info;
199 unsigned char msg[100];
200 unsigned char hash[POLARSSL_MD_MAX_SIZE];
201 unsigned char sig[200];
202 size_t sig_len;
203
204 ecdsa_init( &ctx );
205 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
206 memset( hash, 0, sizeof( hash ) );
207 memset( sig, 0x2a, sizeof( sig ) );
208
209 /* prepare material for signature */
210 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, msg, sizeof( msg ) ) == 0 );
211 md( md_info_from_type( md_alg ), msg, sizeof( msg ), hash );
212
213 /* generate signing key */
214 TEST_ASSERT( ecdsa_genkey( &ctx, id, &rnd_pseudo_rand, &rnd_info ) == 0 );
215
216 /* generate and write signature, then read and verify it */
217 TEST_ASSERT( ecdsa_write_signature_det( &ctx, hash, sizeof( hash ),
218 sig, &sig_len, md_alg ) == 0 );
219 TEST_ASSERT( ecdsa_read_signature( &ctx, hash, sizeof( hash ),
220 sig, sig_len ) == 0 );
221
Paul Bakkerbd51b262014-07-10 15:26:12 +0200222exit:
Manuel Pégourié-Gonnard937340b2014-01-06 10:27:16 +0100223 ecdsa_free( &ctx );
224}
225/* END_CASE */