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Implement DH blinding

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This commit is contained in:
Manuel Pégourié-Gonnard 2013-09-04 16:29:59 +02:00
parent 2d627649bf
commit 143b5028a5
4 changed files with 124 additions and 9 deletions
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2
tests/suites/test_suite_dhm.data
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@ -4,5 +4,5 @@ dhm_do_dhm:1024:10:"23":10:"5"
Diffie-Hellman full exchange #2
dhm_do_dhm:1024:10:"93450983094850938450983409623":10:"9345098304850938450983409622"
Diffie-Hellman full exchange #2
Diffie-Hellman full exchange #3
dhm_do_dhm:1024:10:"93450983094850938450983409623982317398171298719873918739182739712938719287391879381271":10:"9345098309485093845098340962223981329819812792137312973297123912791271"

39
tests/suites/test_suite_dhm.function
View file

@ -35,18 +35,53 @@ void dhm_do_dhm( int NOTUSED, int radix_P, char *input_P,
memset( sec_cli, 0x00, 1000 );
memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
/*
* Set params
*/
TEST_ASSERT( mpi_read_string( &ctx_srv.P, radix_P, input_P ) == 0 );
TEST_ASSERT( mpi_read_string( &ctx_srv.G, radix_G, input_G ) == 0 );
x_size = mpi_size( &ctx_srv.P );
pub_cli_len = x_size;
/*
* First key exchange
*/
TEST_ASSERT( dhm_make_params( &ctx_srv, x_size, ske, &ske_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
ske[ske_len++] = 0;
ske[ske_len++] = 0;
TEST_ASSERT( dhm_read_params( &ctx_cli, &p, ske + ske_len ) == 0 );
TEST_ASSERT( dhm_make_public( &ctx_cli, x_size, pub_cli, pub_cli_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( dhm_read_public( &ctx_srv, pub_cli, pub_cli_len ) == 0 );
TEST_ASSERT( dhm_calc_secret( &ctx_srv, sec_srv, &sec_srv_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( dhm_calc_secret( &ctx_cli, sec_cli, &sec_cli_len, NULL, NULL ) == 0 );
TEST_ASSERT( sec_srv_len == sec_cli_len );
TEST_ASSERT( sec_srv_len != 0 );
TEST_ASSERT( memcmp( sec_srv, sec_cli, sec_srv_len ) == 0 );
/* Re-do calc_secret on server to test update of blinding values */
sec_srv_len = 1000;
TEST_ASSERT( dhm_calc_secret( &ctx_srv, sec_srv, &sec_srv_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( sec_srv_len == sec_cli_len );
TEST_ASSERT( sec_srv_len != 0 );
TEST_ASSERT( memcmp( sec_srv, sec_cli, sec_srv_len ) == 0 );
/*
* Second key exchange to test change of blinding values on server
*/
sec_cli_len = 1000;
sec_srv_len = 1000;
p = ske;
TEST_ASSERT( dhm_make_params( &ctx_srv, x_size, ske, &ske_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
ske[ske_len++] = 0;
ske[ske_len++] = 0;
TEST_ASSERT( dhm_read_params( &ctx_cli, &p, ske + ske_len ) == 0 );
pub_cli_len = x_size;
TEST_ASSERT( dhm_make_public( &ctx_cli, x_size, pub_cli, pub_cli_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
TEST_ASSERT( dhm_read_public( &ctx_srv, pub_cli, pub_cli_len ) == 0 );
TEST_ASSERT( dhm_calc_secret( &ctx_srv, sec_srv, &sec_srv_len, &rnd_pseudo_rand, &rnd_info ) == 0 );