488 lines
17 KiB
Plaintext
488 lines
17 KiB
Plaintext
/* BEGIN_HEADER */
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#include "mbedtls/ecdh.h"
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static int load_public_key( int grp_id, data_t *point,
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mbedtls_ecp_keypair *ecp )
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{
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int ok = 0;
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TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 );
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TEST_ASSERT( mbedtls_ecp_point_read_binary( &ecp->grp,
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&ecp->Q,
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point->x,
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point->len ) == 0 );
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TEST_ASSERT( mbedtls_ecp_check_pubkey( &ecp->grp,
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&ecp->Q ) == 0 );
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ok = 1;
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exit:
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return( ok );
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}
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static int load_private_key( int grp_id, data_t *private_key,
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mbedtls_ecp_keypair *ecp,
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mbedtls_test_rnd_pseudo_info *rnd_info )
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{
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int ok = 0;
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TEST_ASSERT( mbedtls_ecp_read_key( grp_id, ecp,
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private_key->x,
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private_key->len ) == 0 );
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TEST_ASSERT( mbedtls_ecp_check_privkey( &ecp->grp, &ecp->d ) == 0 );
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/* Calculate the public key from the private key. */
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TEST_ASSERT( mbedtls_ecp_mul( &ecp->grp, &ecp->Q, &ecp->d,
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&ecp->grp.G,
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&mbedtls_test_rnd_pseudo_rand,
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rnd_info ) == 0 );
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ok = 1;
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exit:
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return( ok );
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}
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_ECDH_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE depends_on:NOT_DEFINED */
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void ecdh_invalid_param( )
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{
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mbedtls_ecdh_context ctx;
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mbedtls_ecp_keypair kp;
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int invalid_side = 42;
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TEST_EQUAL( MBEDTLS_ERR_ECP_BAD_INPUT_DATA,
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mbedtls_ecdh_get_params( &ctx, &kp,
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invalid_side ) );
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exit:
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return;
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void ecdh_primitive_random( int id )
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{
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mbedtls_ecp_group grp;
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mbedtls_ecp_point qA, qB;
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mbedtls_mpi dA, dB, zA, zB;
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mbedtls_test_rnd_pseudo_info rnd_info;
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mbedtls_ecp_group_init( &grp );
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mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
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mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
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mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB );
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memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) );
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TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB,
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NULL, NULL ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &zB ) == 0 );
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exit:
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mbedtls_ecp_group_free( &grp );
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mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
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mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
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mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void ecdh_primitive_testvec( int id, data_t * rnd_buf_A, char * xA_str,
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char * yA_str, data_t * rnd_buf_B,
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char * xB_str, char * yB_str, char * z_str )
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{
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mbedtls_ecp_group grp;
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mbedtls_ecp_point qA, qB;
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mbedtls_mpi dA, dB, zA, zB, check;
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mbedtls_test_rnd_buf_info rnd_info_A, rnd_info_B;
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mbedtls_ecp_group_init( &grp );
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mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB );
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mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB );
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mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB ); mbedtls_mpi_init( &check );
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TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
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rnd_info_A.buf = rnd_buf_A->x;
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rnd_info_A.length = rnd_buf_A->len;
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/* Fix rnd_buf_A->x by shifting it left if necessary */
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if( grp.nbits % 8 != 0 )
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{
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unsigned char shift = 8 - ( grp.nbits % 8 );
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size_t i;
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for( i = 0; i < rnd_info_A.length - 1; i++ )
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rnd_buf_A->x[i] = rnd_buf_A->x[i] << shift
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| rnd_buf_A->x[i+1] >> ( 8 - shift );
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rnd_buf_A->x[rnd_info_A.length-1] <<= shift;
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}
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rnd_info_B.buf = rnd_buf_B->x;
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rnd_info_B.length = rnd_buf_B->len;
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/* Fix rnd_buf_B->x by shifting it left if necessary */
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if( grp.nbits % 8 != 0 )
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{
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unsigned char shift = 8 - ( grp.nbits % 8 );
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size_t i;
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for( i = 0; i < rnd_info_B.length - 1; i++ )
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rnd_buf_B->x[i] = rnd_buf_B->x[i] << shift
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| rnd_buf_B->x[i+1] >> ( 8 - shift );
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rnd_buf_B->x[rnd_info_B.length-1] <<= shift;
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}
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TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA,
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mbedtls_test_rnd_buffer_rand,
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&rnd_info_A ) == 0 );
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TEST_ASSERT( ! mbedtls_ecp_is_zero( &qA ) );
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TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xA_str ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.X, &check ) == 0 );
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TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yA_str ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.Y, &check ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB,
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mbedtls_test_rnd_buffer_rand,
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&rnd_info_B ) == 0 );
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TEST_ASSERT( ! mbedtls_ecp_is_zero( &qB ) );
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TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xB_str ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.X, &check ) == 0 );
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TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yB_str ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.Y, &check ) == 0 );
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TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, z_str ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &check ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zB, &check ) == 0 );
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exit:
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mbedtls_ecp_group_free( &grp );
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mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB );
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mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB );
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mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB ); mbedtls_mpi_free( &check );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void ecdh_exchange( int id )
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{
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mbedtls_ecdh_context srv, cli;
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unsigned char buf[1000];
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const unsigned char *vbuf;
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size_t len;
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mbedtls_test_rnd_pseudo_info rnd_info;
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unsigned char res_buf[1000];
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size_t res_len;
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mbedtls_ecdh_init( &srv );
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mbedtls_ecdh_init( &cli );
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memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) );
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TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 );
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memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
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TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
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memset( buf, 0x00, sizeof( buf ) );
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TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &res_len, res_buf, 1000,
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NULL, NULL ) == 0 );
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TEST_ASSERT( len == res_len );
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TEST_ASSERT( memcmp( buf, res_buf, len ) == 0 );
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exit:
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mbedtls_ecdh_free( &srv );
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mbedtls_ecdh_free( &cli );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */
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void ecdh_restart( int id, data_t *dA, data_t *dB, data_t *z,
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int enable, int max_ops, int min_restart, int max_restart )
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{
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int ret;
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mbedtls_ecdh_context srv, cli;
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unsigned char buf[1000];
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const unsigned char *vbuf;
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size_t len;
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mbedtls_test_rnd_buf_info rnd_info_A, rnd_info_B;
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int cnt_restart;
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mbedtls_ecp_group grp;
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mbedtls_ecp_group_init( &grp );
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mbedtls_ecdh_init( &srv );
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mbedtls_ecdh_init( &cli );
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rnd_info_A.buf = dA->x;
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rnd_info_A.length = dA->len;
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rnd_info_B.buf = dB->x;
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rnd_info_B.length = dB->len;
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/* The ECDH context is not guaranteed ot have an mbedtls_ecp_group structure
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* in every configuration, therefore we load it separately. */
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TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
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/* Otherwise we would have to fix the random buffer,
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* as in ecdh_primitive_testvec. */
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TEST_ASSERT( grp.nbits % 8 == 0 );
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TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 );
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/* set up restart parameters */
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mbedtls_ecp_set_max_ops( max_ops );
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if( enable )
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{
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mbedtls_ecdh_enable_restart( &srv );
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mbedtls_ecdh_enable_restart( &cli );
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}
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/* server writes its parameters */
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memset( buf, 0x00, sizeof( buf ) );
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len = 0;
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cnt_restart = 0;
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do {
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ret = mbedtls_ecdh_make_params( &srv, &len, buf, sizeof( buf ),
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mbedtls_test_rnd_buffer_rand,
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&rnd_info_A );
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} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
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TEST_ASSERT( ret == 0 );
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TEST_ASSERT( cnt_restart >= min_restart );
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TEST_ASSERT( cnt_restart <= max_restart );
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/* client read server params */
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vbuf = buf;
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TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
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/* client writes its key share */
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memset( buf, 0x00, sizeof( buf ) );
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len = 0;
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cnt_restart = 0;
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do {
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ret = mbedtls_ecdh_make_public( &cli, &len, buf, sizeof( buf ),
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mbedtls_test_rnd_buffer_rand,
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&rnd_info_B );
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} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
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TEST_ASSERT( ret == 0 );
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TEST_ASSERT( cnt_restart >= min_restart );
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TEST_ASSERT( cnt_restart <= max_restart );
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/* server reads client key share */
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TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
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/* server computes shared secret */
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memset( buf, 0, sizeof( buf ) );
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len = 0;
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cnt_restart = 0;
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do {
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ret = mbedtls_ecdh_calc_secret( &srv, &len, buf, sizeof( buf ),
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NULL, NULL );
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} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
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TEST_ASSERT( ret == 0 );
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TEST_ASSERT( cnt_restart >= min_restart );
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TEST_ASSERT( cnt_restart <= max_restart );
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TEST_ASSERT( len == z->len );
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TEST_ASSERT( memcmp( buf, z->x, len ) == 0 );
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/* client computes shared secret */
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memset( buf, 0, sizeof( buf ) );
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len = 0;
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cnt_restart = 0;
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do {
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ret = mbedtls_ecdh_calc_secret( &cli, &len, buf, sizeof( buf ),
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NULL, NULL );
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} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
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TEST_ASSERT( ret == 0 );
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TEST_ASSERT( cnt_restart >= min_restart );
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TEST_ASSERT( cnt_restart <= max_restart );
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TEST_ASSERT( len == z->len );
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TEST_ASSERT( memcmp( buf, z->x, len ) == 0 );
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exit:
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mbedtls_ecp_group_free( &grp );
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mbedtls_ecdh_free( &srv );
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mbedtls_ecdh_free( &cli );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_ECDH_LEGACY_CONTEXT */
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void ecdh_exchange_legacy( int id )
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{
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mbedtls_ecdh_context srv, cli;
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unsigned char buf[1000];
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const unsigned char *vbuf;
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size_t len;
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mbedtls_test_rnd_pseudo_info rnd_info;
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mbedtls_ecdh_init( &srv );
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mbedtls_ecdh_init( &cli );
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memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) );
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TEST_ASSERT( mbedtls_ecp_group_load( &srv.grp, id ) == 0 );
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memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
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TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 );
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memset( buf, 0x00, sizeof( buf ) );
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TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000,
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&mbedtls_test_rnd_pseudo_rand,
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&rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &len, buf, 1000, NULL,
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NULL ) == 0 );
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TEST_ASSERT( mbedtls_mpi_cmp_mpi( &srv.z, &cli.z ) == 0 );
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exit:
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mbedtls_ecdh_free( &srv );
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mbedtls_ecdh_free( &cli );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void ecdh_exchange_calc_secret( int grp_id,
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data_t *our_private_key,
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data_t *their_point,
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int ours_first,
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data_t *expected )
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{
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mbedtls_test_rnd_pseudo_info rnd_info;
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mbedtls_ecp_keypair our_key;
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mbedtls_ecp_keypair their_key;
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mbedtls_ecdh_context ecdh;
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unsigned char shared_secret[MBEDTLS_ECP_MAX_BYTES];
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size_t shared_secret_length = 0;
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memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) );
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mbedtls_ecdh_init( &ecdh );
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mbedtls_ecp_keypair_init( &our_key );
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mbedtls_ecp_keypair_init( &their_key );
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if( ! load_private_key( grp_id, our_private_key, &our_key, &rnd_info ) )
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goto exit;
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if( ! load_public_key( grp_id, their_point, &their_key ) )
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goto exit;
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/* Import the keys to the ECDH calculation. */
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if( ours_first )
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{
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TEST_ASSERT( mbedtls_ecdh_get_params(
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&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_get_params(
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&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
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}
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else
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{
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TEST_ASSERT( mbedtls_ecdh_get_params(
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&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_get_params(
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&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
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}
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/* Perform the ECDH calculation. */
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TEST_ASSERT( mbedtls_ecdh_calc_secret(
|
|
&ecdh,
|
|
&shared_secret_length,
|
|
shared_secret, sizeof( shared_secret ),
|
|
&mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 );
|
|
TEST_ASSERT( shared_secret_length == expected->len );
|
|
TEST_ASSERT( memcmp( expected->x, shared_secret,
|
|
shared_secret_length ) == 0 );
|
|
|
|
exit:
|
|
mbedtls_ecdh_free( &ecdh );
|
|
mbedtls_ecp_keypair_free( &our_key );
|
|
mbedtls_ecp_keypair_free( &their_key );
|
|
}
|
|
/* END_CASE */
|
|
|
|
/* BEGIN_CASE */
|
|
void ecdh_exchange_get_params_fail( int our_grp_id,
|
|
data_t *our_private_key,
|
|
int their_grp_id,
|
|
data_t *their_point,
|
|
int ours_first,
|
|
int expected_ret )
|
|
{
|
|
mbedtls_test_rnd_pseudo_info rnd_info;
|
|
mbedtls_ecp_keypair our_key;
|
|
mbedtls_ecp_keypair their_key;
|
|
mbedtls_ecdh_context ecdh;
|
|
|
|
memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) );
|
|
mbedtls_ecdh_init( &ecdh );
|
|
mbedtls_ecp_keypair_init( &our_key );
|
|
mbedtls_ecp_keypair_init( &their_key );
|
|
|
|
if( ! load_private_key( our_grp_id, our_private_key, &our_key, &rnd_info ) )
|
|
goto exit;
|
|
if( ! load_public_key( their_grp_id, their_point, &their_key ) )
|
|
goto exit;
|
|
|
|
if( ours_first )
|
|
{
|
|
TEST_ASSERT( mbedtls_ecdh_get_params(
|
|
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 );
|
|
TEST_ASSERT( mbedtls_ecdh_get_params(
|
|
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) ==
|
|
expected_ret );
|
|
}
|
|
else
|
|
{
|
|
TEST_ASSERT( mbedtls_ecdh_get_params(
|
|
&ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 );
|
|
TEST_ASSERT( mbedtls_ecdh_get_params(
|
|
&ecdh, &our_key, MBEDTLS_ECDH_OURS ) ==
|
|
expected_ret );
|
|
}
|
|
|
|
exit:
|
|
mbedtls_ecdh_free( &ecdh );
|
|
mbedtls_ecp_keypair_free( &our_key );
|
|
mbedtls_ecp_keypair_free( &their_key );
|
|
}
|
|
/* END_CASE */
|