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Improve testing strategy

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- reference handshake tests that we get the right values (not much now, but
  much more later when we get to deriving the PMS)
- random handshake in addition tests our generate/write functions against our
  read functions, that are tested by the reference handshake, and will be
further tested in the test suite later against invalid inputs
This commit is contained in:
Manuel Pégourié-Gonnard 2015-08-13 14:44:57 +02:00
parent 1a7c5ef42b
commit 8d31e80da4
1 changed files with 94 additions and 19 deletions
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113
library/ecjpake.c
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@ -578,6 +578,35 @@ int mbedtls_ecjpake_self_test( int verbose )
}
#else
static const unsigned char ecjpake_test_password[] = {
0x74, 0x68, 0x72, 0x65, 0x61, 0x64, 0x6a, 0x70, 0x61, 0x6b, 0x65, 0x74,
0x65, 0x73, 0x74
};
static const unsigned char ecjpake_test_x1[] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x21
};
static const unsigned char ecjpake_test_x2[] = {
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
};
static const unsigned char ecjpake_test_x3[] = {
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c,
0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x81
};
static const unsigned char ecjpake_test_x4[] = {
0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc,
0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe1
};
static const unsigned char ecjpake_test_cli_ext[] = {
0x41, 0x04, 0xac, 0xcf, 0x01, 0x06, 0xef, 0x85, 0x8f, 0xa2, 0xd9, 0x19,
0x33, 0x13, 0x46, 0x80, 0x5a, 0x78, 0xb5, 0x8b, 0xba, 0xd0, 0xb8, 0x44,
@ -657,7 +686,6 @@ static const unsigned char ecjpake_test_srv_kx[] = {
0x7c, 0x9b, 0xce, 0x35, 0x25, 0xf5, 0x08, 0x27, 0x6f, 0x26, 0x83, 0x6c
};
#if 0
/* For tests we don't need a secure RNG;
* use the LGC from Numerical Recipes for simplicity */
static int ecjpake_lgc( void *p, unsigned char *out, size_t len )
@ -676,7 +704,6 @@ static int ecjpake_lgc( void *p, unsigned char *out, size_t len )
return( 0 );
}
#endif
#define TEST_ASSERT( x ) \
do { \
@ -695,33 +722,80 @@ static int ecjpake_lgc( void *p, unsigned char *out, size_t len )
int mbedtls_ecjpake_self_test( int verbose )
{
int ret;
mbedtls_ecjpake_context ctx;
char secret[] = "test passphrase";
mbedtls_ecjpake_context cli;
mbedtls_ecjpake_context srv;
unsigned char buf[512];
size_t len;
mbedtls_ecjpake_init( &ctx );
/* Common to all tests */
TEST_ASSERT( mbedtls_ecjpake_setup( &ctx,
MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
(const unsigned char *) secret,
sizeof( secret ) - 1 ) == 0 );
mbedtls_ecjpake_init( &cli );
mbedtls_ecjpake_init( &srv );
if( verbose != 0 )
mbedtls_printf( " ECJPAKE test #1 (read in sequence): " );
mbedtls_printf( " ECJPAKE test #0 (setup): " );
/* This is not realistic because it uses the same context for client and
* server, but it ensures the context has all of X1 to X4 when reading the
* key exchange message, so this is convenient for a quick test */
TEST_ASSERT( mbedtls_ecjpake_setup( &cli,
MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
ecjpake_test_password,
sizeof( ecjpake_test_password ) ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_read_client_ext( &ctx,
TEST_ASSERT( mbedtls_ecjpake_setup( &srv,
MBEDTLS_MD_SHA256, MBEDTLS_ECP_DP_SECP256R1,
ecjpake_test_password,
sizeof( ecjpake_test_password ) ) == 0 );
if( verbose != 0 )
mbedtls_printf( "passed\n" );
if( verbose != 0 )
mbedtls_printf( " ECJPAKE test #1 (random handshake): " );
TEST_ASSERT( mbedtls_ecjpake_tls_write_client_ext( &cli,
buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_read_client_ext( &srv, buf, len ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_write_server_ext( &srv,
buf, sizeof( buf ), &len, ecjpake_lgc, NULL ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_read_server_ext( &cli, buf, len ) == 0 );
if( verbose != 0 )
mbedtls_printf( "passed\n" );
if( verbose != 0 )
mbedtls_printf( " ECJPAKE test #2 (reference handshake): " );
/* Simulate key generation on client, skip writing client_ext */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &cli.xa,
ecjpake_test_x1, sizeof( ecjpake_test_x1 ) ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &cli.xb,
ecjpake_test_x2, sizeof( ecjpake_test_x2 ) ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &cli.grp, &cli.X1, &cli.xa,
&cli.grp.G, NULL, NULL ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &cli.grp, &cli.X2, &cli.xb,
&cli.grp.G, NULL, NULL ) );
/* Server reads client ext */
TEST_ASSERT( mbedtls_ecjpake_tls_read_client_ext( &srv,
ecjpake_test_cli_ext,
sizeof( ecjpake_test_cli_ext ) ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_read_server_ext( &ctx,
/* Simulate key generation on server, skip writing server_ext */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &srv.xa,
ecjpake_test_x3, sizeof( ecjpake_test_x3 ) ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &srv.xb,
ecjpake_test_x4, sizeof( ecjpake_test_x4 ) ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &srv.grp, &srv.X3, &srv.xa,
&srv.grp.G, NULL, NULL ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_mul( &srv.grp, &srv.X4, &srv.xb,
&srv.grp.G, NULL, NULL ) );
/* Client reads server ext and key exchange */
TEST_ASSERT( mbedtls_ecjpake_tls_read_server_ext( &cli,
ecjpake_test_srv_ext,
sizeof( ecjpake_test_srv_ext ) ) == 0 );
TEST_ASSERT( mbedtls_ecjpake_tls_read_server_params( &ctx,
TEST_ASSERT( mbedtls_ecjpake_tls_read_server_params( &cli,
ecjpake_test_srv_kx,
sizeof( ecjpake_test_srv_kx ) ) == 0 );
@ -729,7 +803,8 @@ int mbedtls_ecjpake_self_test( int verbose )
mbedtls_printf( "passed\n" );
cleanup:
mbedtls_ecjpake_free( &ctx );
mbedtls_ecjpake_free( &cli );
mbedtls_ecjpake_free( &srv );
if( ret != 0 )
{