rrand.h

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/*\
 * RRAND RNG - Ruptor's Fast True Random Number Generator, v1.0
 * http://cryptolib.com/crypto/rrand
 * Copyright (c) 1992-2007 Marcos el Ruptor
\*/

#ifndef _RRAND_H
#define _RRAND_H

#ifdef __cplusplus
extern "C" {
#endif

#include "../crypto.h"

#ifndef u64
    #if defined(_MSC_VER)||defined(INTEL_COMPILER)
        #define u64     unsigned __int64
    #else
        #define u64     unsigned long long
    #endif
#endif

#ifndef _STD_TYPES
#define _STD_TYPES

#define uchar   unsigned char
#define uint    unsigned int
#define ulong   unsigned long int

#endif

#define RRAND_SIZE 64	// 64 is more than enough actually, at least for 256-bit security

typedef struct _rrand_state
{
    ulong pool[RRAND_SIZE];
    uint offset;
}
rrand_state;

/**
 * \brief          RRAND initialization
 *
 * \param hs       RRAND state to be initialized
 */
void rrand_init (rrand_state * const rr);

/**
 * \brief          RRAND rand function
 *
 * \param rng_st   RRAND state
 *
 * \return         A random unsigned long
 */
ulong rrand (void * const vr);

#ifdef __cplusplus
}
#endif

#endif /* rrand.h */