mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-26 00:45:29 +00:00
120 lines
4 KiB
Plaintext
120 lines
4 KiB
Plaintext
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/* BEGIN_HEADER */
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/* Test random generation as a whole. */
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#include "mbedtls/ctr_drbg.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/hmac_drbg.h"
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#include "psa/crypto.h"
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/* How many bytes to generate in each test case for repeated generation.
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* This must be high enough that the probability of generating the same
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* output twice is infinitesimal, but low enough that random generators
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* are willing to deliver that much. */
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#define OUTPUT_SIZE 32
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/* END_HEADER */
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/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:MBEDTLS_CTR_DRBG_C */
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void random_twice_with_ctr_drbg( )
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{
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context drbg;
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unsigned char output1[OUTPUT_SIZE];
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unsigned char output2[OUTPUT_SIZE];
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/* First round */
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mbedtls_entropy_init( &entropy );
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mbedtls_ctr_drbg_init( &drbg );
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TEST_EQUAL( 0, mbedtls_ctr_drbg_seed( &drbg,
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mbedtls_entropy_func, &entropy,
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NULL, 0 ) );
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TEST_EQUAL( 0, mbedtls_ctr_drbg_random( &drbg,
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output1, sizeof( output1 ) ) );
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mbedtls_ctr_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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/* Second round */
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mbedtls_entropy_init( &entropy );
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mbedtls_ctr_drbg_init( &drbg );
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TEST_EQUAL( 0, mbedtls_ctr_drbg_seed( &drbg,
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mbedtls_entropy_func, &entropy,
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NULL, 0 ) );
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TEST_EQUAL( 0, mbedtls_ctr_drbg_random( &drbg,
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output2, sizeof( output2 ) ) );
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mbedtls_ctr_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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/* The two rounds must generate different random data. */
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TEST_ASSERT( memcmp( output1, output2, OUTPUT_SIZE ) != 0 );
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exit:
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mbedtls_ctr_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_C:MBEDTLS_HMAC_DRBG_C */
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void random_twice_with_hmac_drbg( int md_type )
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{
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mbedtls_entropy_context entropy;
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mbedtls_hmac_drbg_context drbg;
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unsigned char output1[OUTPUT_SIZE];
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unsigned char output2[OUTPUT_SIZE];
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const mbedtls_md_info_t *md_info = mbedtls_md_info_from_type( md_type );
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/* First round */
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mbedtls_entropy_init( &entropy );
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mbedtls_hmac_drbg_init( &drbg );
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TEST_EQUAL( 0, mbedtls_hmac_drbg_seed( &drbg, md_info,
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mbedtls_entropy_func, &entropy,
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NULL, 0 ) );
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TEST_EQUAL( 0, mbedtls_hmac_drbg_random( &drbg,
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output1, sizeof( output1 ) ) );
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mbedtls_hmac_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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/* Second round */
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mbedtls_entropy_init( &entropy );
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mbedtls_hmac_drbg_init( &drbg );
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TEST_EQUAL( 0, mbedtls_hmac_drbg_seed( &drbg, md_info,
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mbedtls_entropy_func, &entropy,
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NULL, 0 ) );
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TEST_EQUAL( 0, mbedtls_hmac_drbg_random( &drbg,
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output2, sizeof( output2 ) ) );
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mbedtls_hmac_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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/* The two rounds must generate different random data. */
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TEST_ASSERT( memcmp( output1, output2, OUTPUT_SIZE ) != 0 );
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exit:
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mbedtls_hmac_drbg_free( &drbg );
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mbedtls_entropy_free( &entropy );
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}
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/* END_CASE */
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/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_C:!MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
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void random_twice_with_psa_from_psa( )
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{
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unsigned char output1[OUTPUT_SIZE];
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unsigned char output2[OUTPUT_SIZE];
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/* First round */
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PSA_ASSERT( psa_crypto_init( ) );
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PSA_ASSERT( psa_generate_random( output1, sizeof( output1 ) ) );
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PSA_DONE( );
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/* Second round */
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PSA_ASSERT( psa_crypto_init( ) );
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PSA_ASSERT( psa_generate_random( output2, sizeof( output2 ) ) );
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PSA_DONE( );
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/* The two rounds must generate different random data. */
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TEST_ASSERT( memcmp( output1, output2, OUTPUT_SIZE ) != 0 );
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exit:
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PSA_DONE( );
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}
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/* END_CASE */
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