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Paul Bakker33b43f12013-08-20 11:48:36 +02001/* BEGIN_HEADER */
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +01002#include <polarssl/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-Gonnarda0f07472013-08-23 16:35:32 +02006 * depends_on:POLARSSL_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{
13 ecp_group grp;
14 ecp_point qA, qB;
15 mpi dA, dB, zA, zB;
16 rnd_pseudo_info rnd_info;
17
18 ecp_group_init( &grp );
19 ecp_point_init( &qA ); ecp_point_init( &qB );
20 mpi_init( &dA ); mpi_init( &dB );
21 mpi_init( &zA ); mpi_init( &zB );
22 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
23
Paul Bakker33b43f12013-08-20 11:48:36 +020024 TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010025
26 TEST_ASSERT( ecdh_gen_public( &grp, &dA, &qA, &rnd_pseudo_rand, &rnd_info )
27 == 0 );
28 TEST_ASSERT( ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
29 == 0 );
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +020030 TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA,
31 &rnd_pseudo_rand, &rnd_info ) == 0 );
32 TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB,
33 NULL, NULL ) == 0 );
Manuel Pégourié-Gonnard61ce13b2013-01-26 16:20:32 +010034
35 TEST_ASSERT( mpi_cmp_mpi( &zA, &zB ) == 0 );
36
37 ecp_group_free( &grp );
38 ecp_point_free( &qA ); ecp_point_free( &qB );
39 mpi_free( &dA ); mpi_free( &dB );
40 mpi_free( &zA ); mpi_free( &zB );
41}
Paul Bakker33b43f12013-08-20 11:48:36 +020042/* END_CASE */
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010043
Paul Bakker33b43f12013-08-20 11:48:36 +020044/* BEGIN_CASE */
45void ecdh_primitive_testvec( int id, char *dA_str, char *xA_str, char *yA_str,
46 char *dB_str, char *xB_str, char *yB_str,
47 char *z_str )
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010048{
49 ecp_group grp;
50 ecp_point qA, qB;
51 mpi dA, dB, zA, zB, check;
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010052 unsigned char rnd_buf_A[POLARSSL_ECP_MAX_BYTES];
53 unsigned char rnd_buf_B[POLARSSL_ECP_MAX_BYTES];
54 rnd_buf_info rnd_info_A, rnd_info_B;
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010055
56 ecp_group_init( &grp );
57 ecp_point_init( &qA ); ecp_point_init( &qB );
58 mpi_init( &dA ); mpi_init( &dB );
59 mpi_init( &zA ); mpi_init( &zB ); mpi_init( &check );
60
Paul Bakker33b43f12013-08-20 11:48:36 +020061 TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010062
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +010063 rnd_info_A.buf = rnd_buf_A;
64 rnd_info_A.length = unhexify( rnd_buf_A, dA_str );
65
66 /* Fix rnd_buf_A by shifting it left if necessary */
67 if( grp.nbits % 8 != 0 )
68 {
69 unsigned char shift = 8 - ( grp.nbits % 8 );
70 size_t i;
71
72 for( i = 0; i < rnd_info_A.length - 1; i++ )
73 rnd_buf_A[i] = rnd_buf_A[i] << shift
74 | rnd_buf_A[i+1] >> ( 8 - shift );
75
76 rnd_buf_A[rnd_info_A.length-1] <<= shift;
77 }
78
79 rnd_info_B.buf = rnd_buf_B;
80 rnd_info_B.length = unhexify( rnd_buf_B, dB_str );
81
82 /* Fix rnd_buf_B by shifting it left if necessary */
83 if( grp.nbits % 8 != 0 )
84 {
85 unsigned char shift = 8 - ( grp.nbits % 8 );
86 size_t i;
87
88 for( i = 0; i < rnd_info_B.length - 1; i++ )
89 rnd_buf_B[i] = rnd_buf_B[i] << shift
90 | rnd_buf_B[i+1] >> ( 8 - shift );
91
92 rnd_buf_B[rnd_info_B.length-1] <<= shift;
93 }
94
95 TEST_ASSERT( ecdh_gen_public( &grp, &dA, &qA,
96 rnd_buffer_rand, &rnd_info_A ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010097 TEST_ASSERT( ! ecp_is_zero( &qA ) );
Paul Bakker33b43f12013-08-20 11:48:36 +020098 TEST_ASSERT( mpi_read_string( &check, 16, xA_str ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +010099 TEST_ASSERT( mpi_cmp_mpi( &qA.X, &check ) == 0 );
Paul Bakker33b43f12013-08-20 11:48:36 +0200100 TEST_ASSERT( mpi_read_string( &check, 16, yA_str ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100101 TEST_ASSERT( mpi_cmp_mpi( &qA.Y, &check ) == 0 );
102
Manuel Pégourié-Gonnard544416a2014-01-23 16:55:18 +0100103 TEST_ASSERT( ecdh_gen_public( &grp, &dB, &qB,
104 rnd_buffer_rand, &rnd_info_B ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100105 TEST_ASSERT( ! ecp_is_zero( &qB ) );
Paul Bakker33b43f12013-08-20 11:48:36 +0200106 TEST_ASSERT( mpi_read_string( &check, 16, xB_str ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100107 TEST_ASSERT( mpi_cmp_mpi( &qB.X, &check ) == 0 );
Paul Bakker33b43f12013-08-20 11:48:36 +0200108 TEST_ASSERT( mpi_read_string( &check, 16, yB_str ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100109 TEST_ASSERT( mpi_cmp_mpi( &qB.Y, &check ) == 0 );
110
Paul Bakker33b43f12013-08-20 11:48:36 +0200111 TEST_ASSERT( mpi_read_string( &check, 16, z_str ) == 0 );
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +0200112 TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100113 TEST_ASSERT( mpi_cmp_mpi( &zA, &check ) == 0 );
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +0200114 TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
Manuel Pégourié-Gonnard007b7172013-01-27 08:56:21 +0100115 TEST_ASSERT( mpi_cmp_mpi( &zB, &check ) == 0 );
116
117 ecp_group_free( &grp );
118 ecp_point_free( &qA ); ecp_point_free( &qB );
119 mpi_free( &dA ); mpi_free( &dB );
120 mpi_free( &zA ); mpi_free( &zB ); mpi_free( &check );
121}
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{
127 ecdh_context srv, cli;
128 unsigned char buf[1000];
129 const unsigned char *vbuf;
130 size_t len;
131 rnd_pseudo_info rnd_info;
132
133 ecdh_init( &srv );
134 ecdh_init( &cli );
135 memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
136
Paul Bakker33b43f12013-08-20 11:48:36 +0200137 TEST_ASSERT( ecp_use_known_dp( &srv.grp, id ) == 0 );
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100138
139 memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
140 TEST_ASSERT( ecdh_make_params( &srv, &len, buf, 1000,
141 &rnd_pseudo_rand, &rnd_info ) == 0 );
142 TEST_ASSERT( ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
143
Manuel Pégourié-Gonnard424fda52013-02-11 22:05:42 +0100144 memset( buf, 0x00, sizeof( buf ) );
Manuel Pégourié-Gonnard5cceb412013-02-11 21:51:45 +0100145 TEST_ASSERT( ecdh_make_public( &cli, &len, buf, 1000,
146 &rnd_pseudo_rand, &rnd_info ) == 0 );
147 TEST_ASSERT( ecdh_read_public( &srv, buf, len ) == 0 );
148
Manuel Pégourié-Gonnarde09d2f82013-09-02 14:29:09 +0200149 TEST_ASSERT( ecdh_calc_secret( &srv, &len, buf, 1000,
150 &rnd_pseudo_rand, &rnd_info ) == 0 );
151 TEST_ASSERT( ecdh_calc_secret( &cli, &len, buf, 1000, NULL, NULL ) == 0 );
Manuel Pégourié-Gonnard424fda52013-02-11 22:05:42 +0100152 TEST_ASSERT( mpi_cmp_mpi( &srv.z, &cli.z ) == 0 );
153
Manuel Pégourié-Gonnard854fbd72013-02-11 20:28:55 +0100154 ecdh_free( &srv );
155 ecdh_free( &cli );
156}
Paul Bakker33b43f12013-08-20 11:48:36 +0200157/* END_CASE */