88 lines
3.2 KiB
C
88 lines
3.2 KiB
C
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// SPDX-License-Identifier: Apache-2.0 and Unknown
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//
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/*
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NIST-developed software is provided by NIST as a public service. You may use,
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copy, and distribute copies of the software in any medium, provided that you
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keep intact this entire notice. You may improve, modify, and create derivative
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works of the software or any portion of the software, and you may copy and
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distribute such modifications or works. Modified works should carry a notice
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stating that you changed the software and should note the date and nature of any
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such change. Please explicitly acknowledge the National Institute of Standards
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and Technology as the source of the software.
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NIST-developed software is expressly provided "AS IS." NIST MAKES NO WARRANTY OF
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ANY KIND, EXPRESS, IMPLIED, IN FACT, OR ARISING BY OPERATION OF LAW, INCLUDING,
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WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
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PARTICULAR PURPOSE, NON-INFRINGEMENT, AND DATA ACCURACY. NIST NEITHER REPRESENTS
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NOR WARRANTS THAT THE OPERATION OF THE SOFTWARE WILL BE UNINTERRUPTED OR
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ERROR-FREE, OR THAT ANY DEFECTS WILL BE CORRECTED. NIST DOES NOT WARRANT OR MAKE
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ANY REPRESENTATIONS REGARDING THE USE OF THE SOFTWARE OR THE RESULTS THEREOF,
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INCLUDING BUT NOT LIMITED TO THE CORRECTNESS, ACCURACY, RELIABILITY, OR
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USEFULNESS OF THE SOFTWARE.
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You are solely responsible for determining the appropriateness of using and
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distributing the software and you assume all risks associated with its use,
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including but not limited to the risks and costs of program errors, compliance
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with applicable laws, damage to or loss of data, programs or equipment, and the
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unavailability or interruption of operation. This software is not intended to be
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used in any situation where a failure could cause risk of injury or damage to
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property. The software developed by NIST employees is not subject to copyright
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protection within the United States.
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*/
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#include <string.h>
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#include <rng.h>
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#include "ctr_drbg.h"
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#ifdef ENABLE_CT_TESTING
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#include <valgrind/memcheck.h>
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#endif
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#define RNG_SUCCESS 0
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#define RNG_BAD_MAXLEN -1
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#define RNG_BAD_OUTBUF -2
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#define RNG_BAD_REQ_LEN -3
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CTR_DRBG_STATE drbg;
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#ifndef CTRDRBG_TEST_BENCH
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static
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#endif
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void
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randombytes_init_aes_ni(unsigned char *entropy_input,
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unsigned char *personalization_string,
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int security_strength) {
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(void)security_strength; // fixed to 256
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CTR_DRBG_init(&drbg, entropy_input, personalization_string,
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(personalization_string == NULL) ? 0 : CTR_DRBG_ENTROPY_LEN);
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}
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#ifndef CTRDRBG_TEST_BENCH
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static
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#endif
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int
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randombytes_aes_ni(unsigned char *x, size_t xlen) {
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CTR_DRBG_generate(&drbg, x, xlen, NULL, 0);
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return RNG_SUCCESS;
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}
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#ifdef RANDOMBYTES_AES_NI
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SQISIGN_API
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int randombytes(unsigned char *random_array, unsigned long long nbytes) {
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int ret = randombytes_aes_ni(random_array, nbytes);
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#ifdef ENABLE_CT_TESTING
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VALGRIND_MAKE_MEM_UNDEFINED(random_array, ret);
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#endif
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return ret;
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}
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SQISIGN_API
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void randombytes_init(unsigned char *entropy_input,
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unsigned char *personalization_string,
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int security_strength) {
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randombytes_init_aes_ni(entropy_input, personalization_string,
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security_strength);
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}
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#endif
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