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Add misc tests for HMAC_DRBG

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Manuel Pégourié-Gonnard 2014-01-30 22:39:42 +01:00
parent 48bc3e81da
commit 4f880a5dc2
2 changed files with 142 additions and 0 deletions
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102
tests/suites/test_suite_hmac_drbg.function
View file

@ -28,6 +28,82 @@ int entropy_func( void *data, unsigned char *buf, size_t len )
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void hmac_drbg_entropy_usage( int md_alg )
{
unsigned char out[16];
unsigned char buf[1024];
const md_info_t *md_info;
hmac_drbg_context ctx;
entropy_ctx entropy;
size_t last_len, i, reps = 10;
memset( buf, 0, sizeof( buf ) );
memset( out, 0, sizeof( out ) );
entropy.len = sizeof( buf );
entropy.p = buf;
TEST_ASSERT( ( md_info = md_info_from_type( md_alg ) ) != NULL );
/* Init must use entropy */
last_len = entropy.len;
TEST_ASSERT( hmac_drbg_init( &ctx, md_info, entropy_func, &entropy,
NULL, 0 ) == 0 );
TEST_ASSERT( entropy.len < last_len );
/* By default, PR is off and reseed_interval is large,
* so the next few calls should not use entropy */
last_len = entropy.len;
for( i = 0; i < reps; i++ )
{
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) - 4 ) == 0 );
TEST_ASSERT( hmac_drbg_random_with_add( &ctx, out, sizeof( out ) - 4,
buf, 16 ) == 0 );
}
TEST_ASSERT( entropy.len == last_len );
/* While at it, make sure we didn't write past the requested length */
TEST_ASSERT( out[sizeof( out ) - 4] == 0 );
TEST_ASSERT( out[sizeof( out ) - 3] == 0 );
TEST_ASSERT( out[sizeof( out ) - 2] == 0 );
TEST_ASSERT( out[sizeof( out ) - 1] == 0 );
/* Set reseed_interval to the number of calls done,
* so the next call should reseed */
hmac_drbg_set_reseed_interval( &ctx, 2 * reps );
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
TEST_ASSERT( entropy.len < last_len );
/* The new few calls should not reseed */
last_len = entropy.len;
for( i = 0; i < reps / 2; i++ )
{
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
TEST_ASSERT( hmac_drbg_random_with_add( &ctx, out, sizeof( out ) ,
buf, 16 ) == 0 );
}
TEST_ASSERT( entropy.len == last_len );
/* Now enable PR, so the next few calls should all reseed */
hmac_drbg_set_prediction_resistance( &ctx, POLARSSL_HMAC_DRBG_PR_ON );
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
TEST_ASSERT( entropy.len < last_len );
/* Finally, check setting entropy_len */
hmac_drbg_set_entropy_len( &ctx, 42 );
last_len = entropy.len;
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
TEST_ASSERT( (int) last_len - entropy.len == 42 );
hmac_drbg_set_entropy_len( &ctx, 13 );
last_len = entropy.len;
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
TEST_ASSERT( (int) last_len - entropy.len == 13 );
hmac_drbg_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE depends_on:POLARSSL_FS_IO */
void hmac_drbg_seed_file( int md_alg, char *path, int ret )
{
@ -45,6 +121,32 @@ void hmac_drbg_seed_file( int md_alg, char *path, int ret )
}
/* END_CASE */
/* BEGIN_CASE */
void hmac_drbg_buf( int md_alg )
{
unsigned char out[16];
unsigned char buf[100];
const md_info_t *md_info;
hmac_drbg_context ctx;
size_t i;
memset( buf, 0, sizeof( buf ) );
memset( out, 0, sizeof( out ) );
TEST_ASSERT( ( md_info = md_info_from_type( md_alg ) ) != NULL );
TEST_ASSERT( hmac_drbg_init_buf( &ctx, md_info, buf, sizeof( buf ) ) == 0 );
/* Make sure it never tries to reseed (would segfault otherwise) */
hmac_drbg_set_reseed_interval( &ctx, 3 );
hmac_drbg_set_prediction_resistance( &ctx, POLARSSL_HMAC_DRBG_PR_ON );
for( i = 0; i < 30; i++ )
TEST_ASSERT( hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
hmac_drbg_free( &ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void hmac_drbg_no_reseed( int md_alg,
char *entropy_hex, char *custom_hex,

40
tests/suites/test_suite_hmac_drbg.misc.data
View file

@ -1,3 +1,23 @@
HMAC_DRBG entropy usage SHA-1
depends_on:POLARSSL_SHA1_C
hmac_drbg_entropy_usage:POLARSSL_MD_SHA1
HMAC_DRBG entropy usage SHA-224
depends_on:POLARSSL_SHA256_C
hmac_drbg_entropy_usage:POLARSSL_MD_SHA224
HMAC_DRBG entropy usage SHA-256
depends_on:POLARSSL_SHA256_C
hmac_drbg_entropy_usage:POLARSSL_MD_SHA256
HMAC_DRBG entropy usage SHA-384
depends_on:POLARSSL_SHA512_C
hmac_drbg_entropy_usage:POLARSSL_MD_SHA384
HMAC_DRBG entropy usage SHA-512
depends_on:POLARSSL_SHA512_C
hmac_drbg_entropy_usage:POLARSSL_MD_SHA512
HMAC_DRBG write/update seed file SHA-1
depends_on:POLARSSL_SHA1_C
hmac_drbg_seed_file:POLARSSL_MD_SHA1:"data_files/hmac_drbg_seed":0
@ -38,3 +58,23 @@ HMAC_DRBG write/update seed file SHA-512
depends_on:POLARSSL_SHA512_C
hmac_drbg_seed_file:POLARSSL_MD_SHA512:"no_such_dir/file":POLARSSL_ERR_HMAC_DRBG_FILE_IO_ERROR
HMAC_DRBG from buffer SHA-1
depends_on:POLARSSL_SHA1_C
hmac_drbg_buf:POLARSSL_MD_SHA1
HMAC_DRBG from buffer SHA-224
depends_on:POLARSSL_SHA256_C
hmac_drbg_buf:POLARSSL_MD_SHA224
HMAC_DRBG from buffer SHA-256
depends_on:POLARSSL_SHA256_C
hmac_drbg_buf:POLARSSL_MD_SHA256
HMAC_DRBG from buffer SHA-384
depends_on:POLARSSL_SHA512_C
hmac_drbg_buf:POLARSSL_MD_SHA384
HMAC_DRBG from buffer SHA-512
depends_on:POLARSSL_SHA512_C
hmac_drbg_buf:POLARSSL_MD_SHA512