2 #include "mbedtls/ecdsa.h"
6 * depends_on:MBEDTLS_ECDSA_C
11 void ecdsa_prim_random( int id )
13 mbedtls_ecp_group grp;
16 rnd_pseudo_info rnd_info;
17 unsigned char buf[66];
19 mbedtls_ecp_group_init( &grp );
20 mbedtls_ecp_point_init( &Q );
21 mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
22 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
23 memset( buf, 0, sizeof( buf ) );
25 /* prepare material for signature */
26 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, buf, sizeof( buf ) ) == 0 );
27 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
28 TEST_ASSERT( mbedtls_ecp_gen_keypair( &grp, &d, &Q, &rnd_pseudo_rand, &rnd_info )
31 TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, buf, sizeof( buf ),
32 &rnd_pseudo_rand, &rnd_info ) == 0 );
33 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, buf, sizeof( buf ), &Q, &r, &s ) == 0 );
36 mbedtls_ecp_group_free( &grp );
37 mbedtls_ecp_point_free( &Q );
38 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
43 void 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,
47 mbedtls_ecp_group grp;
49 mbedtls_mpi d, r, s, r_check, s_check;
50 unsigned char hash[66], rnd_buf[66];
52 rnd_buf_info rnd_info;
54 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 );
58 memset( hash, 0, sizeof( hash ) );
59 memset( rnd_buf, 0, sizeof( rnd_buf ) );
61 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
62 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 );
66 hlen = unhexify(hash, hash_str);
67 rnd_info.buf = rnd_buf;
68 rnd_info.length = unhexify( rnd_buf, k_str );
70 /* Fix rnd_buf by shifting it left if necessary */
71 if( grp.nbits % 8 != 0 )
73 unsigned char shift = 8 - ( grp.nbits % 8 );
76 for( i = 0; i < rnd_info.length - 1; i++ )
77 rnd_buf[i] = rnd_buf[i] << shift | rnd_buf[i+1] >> ( 8 - shift );
79 rnd_buf[rnd_info.length-1] <<= shift;
82 TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, hash, hlen,
83 rnd_buffer_rand, &rnd_info ) == 0 );
85 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
86 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
88 TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen, &Q, &r_check, &s_check ) == 0 );
91 mbedtls_ecp_group_free( &grp );
92 mbedtls_ecp_point_free( &Q );
93 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
94 mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
98 /* BEGIN_CASE depends_on:MBEDTLS_ECDSA_DETERMINISTIC */
99 void ecdsa_det_test_vectors( int id, char *d_str, int md_alg,
100 char *msg, char *r_str, char *s_str )
102 mbedtls_ecp_group grp;
103 mbedtls_mpi d, r, s, r_check, s_check;
104 unsigned char hash[MBEDTLS_MD_MAX_SIZE];
106 const mbedtls_md_info_t *md_info;
108 mbedtls_ecp_group_init( &grp );
109 mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
110 mbedtls_mpi_init( &r_check ); mbedtls_mpi_init( &s_check );
111 memset( hash, 0, sizeof( hash ) );
113 TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
114 TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
115 TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
116 TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
118 md_info = mbedtls_md_info_from_type( md_alg );
119 TEST_ASSERT( md_info != NULL );
120 hlen = mbedtls_md_get_size( md_info );
121 mbedtls_md( md_info, (const unsigned char *) msg, strlen( msg ), hash );
123 TEST_ASSERT( mbedtls_ecdsa_sign_det( &grp, &r, &s, &d, hash, hlen, md_alg ) == 0 );
125 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
126 TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
129 mbedtls_ecp_group_free( &grp );
130 mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
131 mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
135 /* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
136 void ecdsa_write_read_random( int id )
138 mbedtls_ecdsa_context ctx;
139 rnd_pseudo_info rnd_info;
140 unsigned char hash[32];
141 unsigned char sig[200];
144 mbedtls_ecdsa_init( &ctx );
145 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
146 memset( hash, 0, sizeof( hash ) );
147 memset( sig, 0x2a, sizeof( sig ) );
149 /* prepare material for signature */
150 TEST_ASSERT( rnd_pseudo_rand( &rnd_info, hash, sizeof( hash ) ) == 0 );
152 /* generate signing key */
153 TEST_ASSERT( mbedtls_ecdsa_genkey( &ctx, id, &rnd_pseudo_rand, &rnd_info ) == 0 );
155 /* generate and write signature, then read and verify it */
156 TEST_ASSERT( mbedtls_ecdsa_write_signature( &ctx, MBEDTLS_MD_SHA256,
157 hash, sizeof( hash ),
158 sig, &sig_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
159 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
160 sig, sig_len ) == 0 );
162 /* check we didn't write past the announced length */
163 for( i = sig_len; i < sizeof( sig ); i++ )
164 TEST_ASSERT( sig[i] == 0x2a );
166 /* try verification with invalid length */
167 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
168 sig, sig_len - 1 ) != 0 );
169 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
170 sig, sig_len + 1 ) != 0 );
172 /* try invalid sequence tag */
174 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
175 sig, sig_len ) != 0 );
178 /* try modifying r */
180 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
181 sig, sig_len ) != 0 );
184 /* try modifying s */
186 TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
187 sig, sig_len ) != 0 );
191 mbedtls_ecdsa_free( &ctx );