DHM: new functions to query the length of the modulus
Add two functions mbedtls_dhm_get_len() and mbedtls_dhm_get_bitlen() to
query the length of the modulus in bytes or bits.
Remove the len field: the cost of calling mbedtls_dhm_get_len() each time
it's needed is negligible, and this improves the abstraction of the DHM
module.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_dhm.function b/tests/suites/test_suite_dhm.function
index c4d78de..7e01eb7 100644
--- a/tests/suites/test_suite_dhm.function
+++ b/tests/suites/test_suite_dhm.function
@@ -229,7 +229,8 @@
TEST_ASSERT( mbedtls_dhm_parse_dhmfile( &ctx, filename ) == 0 );
- TEST_ASSERT( ctx.len == (size_t) len );
+ TEST_EQUAL( mbedtls_dhm_get_len( &ctx ), (size_t) len );
+ TEST_EQUAL( mbedtls_dhm_get_bitlen( &ctx ), mbedtls_mpi_bitlen( &P ) );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &ctx.P, &P ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &ctx.G, &G ) == 0 );