| /* BEGIN_HEADER */ |
| #include "mbedtls/bignum.h" |
| #include "mbedtls/entropy.h" |
| #include "bignum_mod.h" |
| #include "constant_time_internal.h" |
| #include "test/constant_flow.h" |
| /* END_HEADER */ |
| |
| /* BEGIN_DEPENDENCIES |
| * depends_on:MBEDTLS_BIGNUM_C |
| * END_DEPENDENCIES |
| */ |
| |
| /* BEGIN_CASE */ |
| void mpi_mod_setup( int ext_rep, int int_rep, int iret ) |
| { |
| #define MLIMBS 8 |
| mbedtls_mpi_uint mp[MLIMBS]; |
| mbedtls_mpi_mod_modulus m; |
| int ret; |
| |
| memset( mp, 0xFF, sizeof(mp) ); |
| |
| mbedtls_mpi_mod_modulus_init( &m ); |
| ret = mbedtls_mpi_mod_modulus_setup( &m, mp, MLIMBS, ext_rep, int_rep ); |
| TEST_EQUAL( ret, iret ); |
| |
| /* Only test if the constants have been set-up */ |
| if ( ret == 0 && int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY ) |
| { |
| /* Test that the consts have been calculated */ |
| TEST_ASSERT( m.rep.mont.rr != NULL ); |
| TEST_ASSERT( m.rep.mont.mm != 0 ); |
| |
| } |
| |
| /* Address sanitiser should catch if we try to free mp */ |
| mbedtls_mpi_mod_modulus_free( &m ); |
| |
| /* Make sure that the modulus doesn't have reference to mp anymore */ |
| TEST_ASSERT( m.p != mp ); |
| |
| /* Only test if the constants have been set-up */ |
| if ( ret == 0 && int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY ) |
| { |
| /* Verify the data and pointers allocated have been properly wiped */ |
| TEST_ASSERT( m.rep.mont.rr == NULL ); |
| TEST_ASSERT( m.rep.mont.mm == 0 ); |
| } |
| exit: |
| /* It should be safe to call an mbedtls free several times */ |
| mbedtls_mpi_mod_modulus_free( &m ); |
| |
| #undef MLIMBS |
| } |
| /* END_CASE */ |
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