mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-26 23:15:41 +01:00
310 lines
11 KiB
Plaintext
310 lines
11 KiB
Plaintext
/* BEGIN_HEADER */
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#include "mbedtls/ecdh.h"
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static int load_public_key( int grp_id, const char *point_str,
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mbedtls_ecp_keypair *ecp )
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{
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int ok = 0;
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unsigned char point_buf[MBEDTLS_ECP_MAX_PT_LEN];
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size_t point_len = unhexify( point_buf, point_str );
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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_buf,
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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, const char *private_key_str,
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mbedtls_ecp_keypair *ecp,
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rnd_pseudo_info *rnd_info )
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{
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int ok = 0;
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unsigned char private_key_buf[MBEDTLS_ECP_MAX_BYTES];
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size_t private_key_len = unhexify( private_key_buf, private_key_str );
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TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 );
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TEST_ASSERT( mbedtls_mpi_read_binary( &ecp->d,
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private_key_buf,
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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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&rnd_pseudo_rand, 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 */
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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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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( 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, &rnd_pseudo_rand, &rnd_info )
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== 0 );
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TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
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== 0 );
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TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA,
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&rnd_pseudo_rand, &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, char *dA_str, char *xA_str, char *yA_str,
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char *dB_str, char *xB_str, char *yB_str,
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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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unsigned char rnd_buf_A[MBEDTLS_ECP_MAX_BYTES];
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unsigned char rnd_buf_B[MBEDTLS_ECP_MAX_BYTES];
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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;
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rnd_info_A.length = unhexify( rnd_buf_A, dA_str );
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/* Fix rnd_buf_A 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[i] = rnd_buf_A[i] << shift
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| rnd_buf_A[i+1] >> ( 8 - shift );
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rnd_buf_A[rnd_info_A.length-1] <<= shift;
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}
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rnd_info_B.buf = rnd_buf_B;
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rnd_info_B.length = unhexify( rnd_buf_B, dB_str );
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/* Fix rnd_buf_B 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[i] = rnd_buf_B[i] << shift
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| rnd_buf_B[i+1] >> ( 8 - shift );
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rnd_buf_B[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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rnd_buffer_rand, &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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rnd_buffer_rand, &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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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( 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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&rnd_pseudo_rand, &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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&rnd_pseudo_rand, &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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&rnd_pseudo_rand, &rnd_info ) == 0 );
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TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &len, buf, 1000, NULL, 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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char *our_private_key,
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char *their_point,
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int ours_first,
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char *expected_str )
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{
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rnd_pseudo_info rnd_info;
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unsigned char expected_buf[MBEDTLS_ECP_MAX_BYTES];
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size_t expected_len;
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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( 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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expected_len = unhexify( expected_buf, expected_str );
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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(
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&ecdh,
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&shared_secret_length,
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shared_secret, sizeof( shared_secret ),
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&rnd_pseudo_rand, &rnd_info ) == 0 );
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TEST_ASSERT( shared_secret_length == expected_len );
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TEST_ASSERT( memcmp( expected_buf, shared_secret,
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shared_secret_length ) == 0 );
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exit:
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mbedtls_ecdh_free( &ecdh );
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mbedtls_ecp_keypair_free( &our_key );
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mbedtls_ecp_keypair_free( &their_key );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void ecdh_exchange_get_params_fail( int our_grp_id,
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char *our_private_key,
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int their_grp_id,
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char *their_point,
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int ours_first,
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int expected_ret )
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{
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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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memset( &rnd_info, 0x00, sizeof( 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( our_grp_id, our_private_key, &our_key, &rnd_info ) )
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goto exit;
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if( ! load_public_key( their_grp_id, their_point, &their_key ) )
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goto exit;
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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 ) ==
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expected_ret );
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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 ) ==
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expected_ret );
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}
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exit:
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mbedtls_ecdh_free( &ecdh );
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mbedtls_ecp_keypair_free( &our_key );
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mbedtls_ecp_keypair_free( &their_key );
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}
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/* END_CASE */
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