77 lines
2.2 KiB
Plaintext
77 lines
2.2 KiB
Plaintext
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/* BEGIN_HEADER */
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#include <polarssl/hmac_drbg.h>
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typedef struct
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{
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unsigned char *p;
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size_t len;
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} entropy_ctx;
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int entropy_func( void *data, unsigned char *buf, size_t len )
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{
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entropy_ctx *ctx = (entropy_ctx *) data;
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if( len > ctx->len )
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return( -1 );
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memcpy( buf, ctx->p, len );
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ctx->p += len;
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ctx->len -= len;
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return( 0 );
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}
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:POLARSSL_HMAC_DRBG_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE */
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void hmac_drbg_no_reseed( int md_alg,
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char *entropy_hex, char *custom_hex,
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char *add1_hex, char *add2_hex,
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char *output_hex )
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{
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unsigned char entropy[512];
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unsigned char custom[512];
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unsigned char add1[512];
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unsigned char add2[512];
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unsigned char output[512];
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unsigned char my_output[512];
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size_t custom_len, add1_len, add2_len, out_len;
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entropy_ctx p_entropy;
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const md_info_t *md_info;
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hmac_drbg_context ctx;
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memset( my_output, 0, sizeof my_output );
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custom_len = unhexify( custom, custom_hex );
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add1_len = unhexify( add1, add1_hex );
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add2_len = unhexify( add2, add2_hex );
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out_len = unhexify( output, output_hex );
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p_entropy.len = unhexify( entropy, entropy_hex );
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p_entropy.p = entropy;
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TEST_ASSERT( ( md_info = md_info_from_type( md_alg ) ) != NULL );
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TEST_ASSERT( hmac_drbg_init( &ctx, md_info, entropy_func, &p_entropy,
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custom, custom_len ) == 0 );
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TEST_ASSERT( hmac_drbg_random_with_add( &ctx, my_output, out_len,
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add1, add1_len ) == 0 );
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TEST_ASSERT( hmac_drbg_random_with_add( &ctx, my_output, out_len,
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add2, add2_len ) == 0 );
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hmac_drbg_free( &ctx );
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/* Check output is correct */
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TEST_ASSERT( memcmp( my_output, output, out_len ) == 0 );
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/* Check we didn't write more bytes than needed */
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TEST_ASSERT( my_output[out_len + 0] == 0 );
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TEST_ASSERT( my_output[out_len + 1] == 0 );
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TEST_ASSERT( my_output[out_len + 2] == 0 );
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TEST_ASSERT( my_output[out_len + 3] == 0 );
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}
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/* END_CASE */
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