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97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/**
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*
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* <rng.h>
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*
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* @version 2.0 (March 2019)
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*
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* Reference ISO-C11 Implementation of the LEDAcrypt KEM-LT cipher using GCC built-ins.
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*
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* In alphabetical order:
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*
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* @author Marco Baldi <m.baldi@univpm.it>
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* @author Alessandro Barenghi <alessandro.barenghi@polimi.it>
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* @author Franco Chiaraluce <f.chiaraluce@univpm.it>
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* @author Gerardo Pelosi <gerardo.pelosi@polimi.it>
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* @author Paolo Santini <p.santini@pm.univpm.it>
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*
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* This code is hereby placed in the public domain.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**/
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#pragma once
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/****** From this point on, the code was supplied by NIST ****************/
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// Created by Bassham, Lawrence E (Fed) on 8/29/17.
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// Copyright © 2017 Bassham, Lawrence E (Fed). All rights reserved.
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//
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/****** from NIST ****************/
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#include <stdio.h>
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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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typedef struct {
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unsigned char buffer[16];
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int buffer_pos;
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unsigned long length_remaining;
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unsigned char key[32];
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unsigned char ctr[16];
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} AES_XOF_struct;
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typedef struct {
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unsigned char Key[32];
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unsigned char V[16];
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int reseed_counter;
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} AES256_CTR_DRBG_struct;
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void
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AES256_CTR_DRBG_Update(unsigned char *provided_data,
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unsigned char *Key,
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unsigned char *V);
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int
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seedexpander_init(AES_XOF_struct *ctx,
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unsigned char *seed,
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unsigned char *diversifier,
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unsigned long maxlen);
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int
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seedexpander(AES_XOF_struct *ctx, unsigned char *x, unsigned long xlen);
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void
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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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int
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randombytes(unsigned char *x, unsigned long long xlen);
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/****** End of NIST supplied code ****************/
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void initialize_pseudo_random_generator_seed(int ac, char *av[]);
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void deterministic_random_byte_generator(unsigned char *const output,
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const unsigned long long output_len,
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const unsigned char *const seed,
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const unsigned long long seed_length);
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void seedexpander_from_trng(AES_XOF_struct *ctx,
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const unsigned char *trng_entropy
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/* TRNG_BYTE_LENGTH wide buffer */);
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