60 void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx )  in mbedtls_ctr_drbg_init()  argument
62     memset( ctx, 0, sizeof( mbedtls_ctr_drbg_context ) );  in mbedtls_ctr_drbg_init()
65     mbedtls_mutex_init( &ctx->mutex );  in mbedtls_ctr_drbg_init()
74                    mbedtls_ctr_drbg_context *ctx,  in mbedtls_ctr_drbg_seed_entropy_len()  argument
86     mbedtls_aes_init( &ctx->aes_ctx );  in mbedtls_ctr_drbg_seed_entropy_len()
88     ctx->f_entropy = f_entropy;  in mbedtls_ctr_drbg_seed_entropy_len()
89     ctx->p_entropy = p_entropy;  in mbedtls_ctr_drbg_seed_entropy_len()
91     ctx->entropy_len = entropy_len;  in mbedtls_ctr_drbg_seed_entropy_len()
92     ctx->reseed_interval = MBEDTLS_CTR_DRBG_RESEED_INTERVAL;  in mbedtls_ctr_drbg_seed_entropy_len()
97     mbedtls_aes_setkey_enc( &ctx->aes_ctx, key, MBEDTLS_CTR_DRBG_KEYBITS );  in mbedtls_ctr_drbg_seed_entropy_len()
99     if( ( ret = mbedtls_ctr_drbg_reseed( ctx, custom, len ) ) != 0 )  in mbedtls_ctr_drbg_seed_entropy_len()
105 int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,  in mbedtls_ctr_drbg_seed()  argument
111     return( mbedtls_ctr_drbg_seed_entropy_len( ctx, f_entropy, p_entropy, custom, len,  in mbedtls_ctr_drbg_seed()
115 void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx )  in mbedtls_ctr_drbg_free()  argument
117     if( ctx == NULL )  in mbedtls_ctr_drbg_free()
121     mbedtls_mutex_free( &ctx->mutex );  in mbedtls_ctr_drbg_free()
123     mbedtls_aes_free( &ctx->aes_ctx );  in mbedtls_ctr_drbg_free()
124     mbedtls_zeroize( ctx, sizeof( mbedtls_ctr_drbg_context ) );  in mbedtls_ctr_drbg_free()
127 void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx, int resistance )  in mbedtls_ctr_drbg_set_prediction_resistance()  argument
129     ctx->prediction_resistance = resistance;  in mbedtls_ctr_drbg_set_prediction_resistance()
132 void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx, size_t len )  in mbedtls_ctr_drbg_set_entropy_len()  argument
134     ctx->entropy_len = len;  in mbedtls_ctr_drbg_set_entropy_len()
137 void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx, int interval )  in mbedtls_ctr_drbg_set_reseed_interval()  argument
139     ctx->reseed_interval = interval;  in mbedtls_ctr_drbg_set_reseed_interval()
232 static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx,  in ctr_drbg_update_internal()  argument
247             if( ++ctx->counter[i - 1] != 0 )  in ctr_drbg_update_internal()
253         mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, p );  in ctr_drbg_update_internal()
264     mbedtls_aes_setkey_enc( &ctx->aes_ctx, tmp, MBEDTLS_CTR_DRBG_KEYBITS );  in ctr_drbg_update_internal()
265     memcpy( ctx->counter, tmp + MBEDTLS_CTR_DRBG_KEYSIZE, MBEDTLS_CTR_DRBG_BLOCKSIZE );  in ctr_drbg_update_internal()
270 void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,  in mbedtls_ctr_drbg_update()  argument
283         ctr_drbg_update_internal( ctx, add_input );  in mbedtls_ctr_drbg_update()
287 int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,  in mbedtls_ctr_drbg_reseed()  argument
293     if( ctx->entropy_len + len > MBEDTLS_CTR_DRBG_MAX_SEED_INPUT )  in mbedtls_ctr_drbg_reseed()
301     if( 0 != ctx->f_entropy( ctx->p_entropy, seed,  in mbedtls_ctr_drbg_reseed()
302                              ctx->entropy_len ) )  in mbedtls_ctr_drbg_reseed()
307     seedlen += ctx->entropy_len;  in mbedtls_ctr_drbg_reseed()
326     ctr_drbg_update_internal( ctx, seed );  in mbedtls_ctr_drbg_reseed()
327     ctx->reseed_counter = 1;  in mbedtls_ctr_drbg_reseed()
337     mbedtls_ctr_drbg_context *ctx = (mbedtls_ctr_drbg_context *) p_rng;  in mbedtls_ctr_drbg_random_with_add()  local
352     if( ctx->reseed_counter > ctx->reseed_interval ||  in mbedtls_ctr_drbg_random_with_add()
353         ctx->prediction_resistance )  in mbedtls_ctr_drbg_random_with_add()
355         if( ( ret = mbedtls_ctr_drbg_reseed( ctx, additional, add_len ) ) != 0 )  in mbedtls_ctr_drbg_random_with_add()
364         ctr_drbg_update_internal( ctx, add_input );  in mbedtls_ctr_drbg_random_with_add()
373             if( ++ctx->counter[i - 1] != 0 )  in mbedtls_ctr_drbg_random_with_add()
379         mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, tmp );  in mbedtls_ctr_drbg_random_with_add()
391     ctr_drbg_update_internal( ctx, add_input );  in mbedtls_ctr_drbg_random_with_add()
393     ctx->reseed_counter++;  in mbedtls_ctr_drbg_random_with_add()
401     mbedtls_ctr_drbg_context *ctx = (mbedtls_ctr_drbg_context *) p_rng;  in mbedtls_ctr_drbg_random()  local
404     if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 )  in mbedtls_ctr_drbg_random()
408     ret = mbedtls_ctr_drbg_random_with_add( ctx, output, output_len, NULL, 0 );  in mbedtls_ctr_drbg_random()
411     if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 )  in mbedtls_ctr_drbg_random()
419 int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path )  in mbedtls_ctr_drbg_write_seed_file()  argument
428     if( ( ret = mbedtls_ctr_drbg_random( ctx, buf, MBEDTLS_CTR_DRBG_MAX_INPUT ) ) != 0 )  in mbedtls_ctr_drbg_write_seed_file()
444 int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path )  in mbedtls_ctr_drbg_update_seed_file()  argument
471     mbedtls_ctr_drbg_update( ctx, buf, n );  in mbedtls_ctr_drbg_update_seed_file()
473     return( mbedtls_ctr_drbg_write_seed_file( ctx, path ) );  in mbedtls_ctr_drbg_update_seed_file()
541     mbedtls_ctr_drbg_context ctx;  in mbedtls_ctr_drbg_self_test()  local
544     mbedtls_ctr_drbg_init( &ctx );  in mbedtls_ctr_drbg_self_test()
553     CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy,  in mbedtls_ctr_drbg_self_test()
555     mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON );  in mbedtls_ctr_drbg_self_test()
556     CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) );  in mbedtls_ctr_drbg_self_test()
557     CHK( mbedtls_ctr_drbg_random( &ctx, buf, MBEDTLS_CTR_DRBG_BLOCKSIZE ) );  in mbedtls_ctr_drbg_self_test()
560     mbedtls_ctr_drbg_free( &ctx );  in mbedtls_ctr_drbg_self_test()
571     mbedtls_ctr_drbg_init( &ctx );  in mbedtls_ctr_drbg_self_test()
574     CHK( mbedtls_ctr_drbg_seed_entropy_len( &ctx, ctr_drbg_self_test_entropy,  in mbedtls_ctr_drbg_self_test()
576     CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) );  in mbedtls_ctr_drbg_self_test()
577     CHK( mbedtls_ctr_drbg_reseed( &ctx, NULL, 0 ) );  in mbedtls_ctr_drbg_self_test()
578     CHK( mbedtls_ctr_drbg_random( &ctx, buf, 16 ) );  in mbedtls_ctr_drbg_self_test()
581     mbedtls_ctr_drbg_free( &ctx );  in mbedtls_ctr_drbg_self_test()