Node / markqvist / reticulum-cpp.git / files / src / Cryptography / Random.h

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#pragma once

#include "../Bytes.h"

#include <RNG.h>

#include <stdint.h>

namespace RNS { namespace Cryptography {

// return vector specified length of random bytes

inline const Bytes random(size_t length) {

Bytes rand;

RNG.rand(rand.writable(length), length);

return rand;

}

// return 32 bit random unigned int

inline uint32_t randomnum() {

Bytes rand;

RNG.rand(rand.writable(4), 4);

uint32_t randnum = uint32_t((unsigned char)(rand.data()[0]) << 24 |

(unsigned char)(rand.data()[0]) << 16 |

(unsigned char)(rand.data()[0]) << 8 |

(unsigned char)(rand.data()[0]));

return randnum;

}

// return 32 bit random unigned int between 0 and specified value

inline uint32_t randomnum(uint32_t max) {

return randomnum() % max;

}

// return random float value from 0 to 1

inline float random() {

return (float)(randomnum() / (float)0xffffffff);

}

} }