102 lines
3.3 KiB
Text
102 lines
3.3 KiB
Text
/* BEGIN_HEADER */
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#include <stdint.h>
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#include "psa/crypto.h"
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#include "psa_prot_internal_storage.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/entropy_poll.h"
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/* MAX value support macro */
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#if !defined(MAX)
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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/* Calculating the minimum allowed entropy size in bytes */
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#define MBEDTLS_PSA_INJECT_ENTROPY_MIN_SIZE MAX(MBEDTLS_ENTROPY_MIN_PLATFORM, MBEDTLS_ENTROPY_BLOCK_SIZE)
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_ENTROPY_NV_SEED:MBEDTLS_PSA_HAS_ITS_IO:MBEDTLS_PSA_CRYPTO_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE */
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void validate_entropy_seed_injection( int seed_length_a,
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int expected_status_a,
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int seed_length_b,
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int expected_status_b )
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{
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psa_its_status_t its_status;
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psa_status_t status;
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uint8_t output[32] = { 0 };
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uint8_t zeros[32] = { 0 };
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uint8_t *seed = NULL;
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int i;
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int seed_size;
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if( seed_length_a > seed_length_b )
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{
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seed_size = seed_length_a;
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}
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else
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{
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seed_size = seed_length_b;
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}
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ASSERT_ALLOC( seed, seed_size );
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/* fill seed with some data */
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for( i = 0; i < seed_size; ++i )
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{
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seed[i] = i;
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}
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its_status = psa_its_remove( PSA_CRYPTO_ITS_RANDOM_SEED_UID );
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TEST_ASSERT( ( its_status == PSA_ITS_SUCCESS ) ||
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( its_status == PSA_ITS_ERROR_KEY_NOT_FOUND ) );
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status = mbedtls_psa_inject_entropy( seed, seed_length_a );
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TEST_ASSERT( status == expected_status_a );
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status = mbedtls_psa_inject_entropy( seed, seed_length_b );
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TEST_ASSERT( status == expected_status_b );
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TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
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TEST_ASSERT( psa_generate_random( output,
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sizeof( output ) ) == PSA_SUCCESS );
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TEST_ASSERT( memcmp( output, zeros, sizeof( output ) ) != 0 );
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exit:
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mbedtls_free( seed );
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psa_its_remove( PSA_CRYPTO_ITS_RANDOM_SEED_UID );
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mbedtls_psa_crypto_free( );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void run_entropy_inject_with_crypto_init( )
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{
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psa_its_status_t its_status;
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psa_status_t status;
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int i;
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uint8_t seed[MBEDTLS_PSA_INJECT_ENTROPY_MIN_SIZE] = { 0 };
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/* fill seed with some data */
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for( i = 0; i < sizeof( seed ); ++i )
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{
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seed[i] = i;
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}
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its_status = psa_its_remove( PSA_CRYPTO_ITS_RANDOM_SEED_UID );
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TEST_ASSERT( ( its_status == PSA_ITS_SUCCESS ) ||
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( its_status == PSA_ITS_ERROR_KEY_NOT_FOUND ) );
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status = mbedtls_psa_inject_entropy( seed, sizeof( seed ) );
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TEST_ASSERT( status == PSA_SUCCESS );
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its_status = psa_its_remove( PSA_CRYPTO_ITS_RANDOM_SEED_UID );
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TEST_ASSERT( its_status == PSA_ITS_SUCCESS );
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status = psa_crypto_init( );
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TEST_ASSERT( status == PSA_ERROR_INSUFFICIENT_ENTROPY );
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status = mbedtls_psa_inject_entropy( seed, sizeof( seed ) );
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TEST_ASSERT( status == PSA_SUCCESS );
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status = psa_crypto_init( );
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TEST_ASSERT( status == PSA_SUCCESS );
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mbedtls_psa_crypto_free( );
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/* The seed is written by nv_seed callback functions therefore the injection will fail */
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status = mbedtls_psa_inject_entropy( seed, sizeof( seed ) );
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TEST_ASSERT( status == PSA_ERROR_NOT_PERMITTED );
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exit:
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psa_its_remove( PSA_CRYPTO_ITS_RANDOM_SEED_UID );
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mbedtls_psa_crypto_free( );
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}
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/* END_CASE */
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