rng.h

Go to the documentation of this file.

/*
   rng.h
   Created by Bassham, Lawrence E (Fed) on 8/29/17.
   Copyright © 2017 Bassham, Lawrence E (Fed). All rights reserved.
*/
 
#ifndef rng_h
#define rng_h
 
#include <stdio.h>
 
#define RNG_SUCCESS 0
#define RNG_BAD_MAXLEN -1
#define RNG_BAD_OUTBUF -2
#define RNG_BAD_REQ_LEN -3
 
typedef struct
{
    unsigned char buffer[16];
    int buffer_pos;
    unsigned long length_remaining;
    unsigned char key[32];
    unsigned char ctr[16];
} AES_XOF_struct;
 
typedef struct
{
    unsigned char Key[32];
    unsigned char V[16];
    int reseed_counter;
} AES256_CTR_DRBG_struct;
 
 
void AES256_CTR_DRBG_Update(
    unsigned char* provided_data, unsigned char* Key, unsigned char* V);
 
int seedexpander_init(
    AES_XOF_struct* ctx,
    unsigned char* seed,
    unsigned char* diversifier,
    unsigned long maxlen);
 
int seedexpander(AES_XOF_struct* ctx, unsigned char* x, unsigned long xlen);
 
void randombytes_init(
    unsigned char* entropy_input,
    unsigned char* personalization_string,
    int security_strength);
 
int randombytes(unsigned char* x, unsigned long long xlen);
 
#endif /* rng_h */