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Make the fallback behavior of mbedtls_test_rnd_buffer_rand optional

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If a fallback is not explicitly configured in the
mbedtls_test_rnd_buf_info structure, fail after the buffer is
exhausted.

There is no intended behavior change in this commit: all existing uses
of mbedtls_test_rnd_buffer_rand() have been updated to set
mbedtls_test_rnd_std_rand as the fallback.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2021-03-24 00:48:57 +01:00
parent ebf3a4b80f
commit bef3019ed5
6 changed files with 37 additions and 4 deletions
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2
tests/suites/test_suite_ecdsa.function
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@ -292,6 +292,8 @@ void ecdsa_prim_test_vectors( int id, char * d_str, char * xQ_str,
TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
rnd_info.fallback_f_rng = mbedtls_test_rnd_std_rand;
rnd_info.fallback_p_rng = NULL;
rnd_info.buf = rnd_buf->x;
rnd_info.length = rnd_buf->len;