rand

Rand package generates fast, cryptographic random numbers using the RDRAND instruction. Some argue that RDRAND is cryptographically compromised by National Security Agency using an unknown backdoor. On the other hand, using the instruction is ~3x faster than crypto/rand (on a Mac 3.5GHz i7 using go test benchmark).

The package accesses assembly instructions via C-go C wrapper.

Example

package main

import (
    log "github.com/surendarchandra/rand"
)

func main() {
    if rand.IsRand64Supported() {
        var rnd uint64
        RdRand64(&rnd)

        /* Byte arrays are also supported */
        b = make([]byte, 1000)
        rand.Read(b)
    }
}

Performance Results

Mac OSX High Sierra, iMac 3.5GHz I7 (laste 2013)

crypto/rand, 1000 bytes: 63779 ns/op
crypto/rand, 8 bytes: 592 ns/op
math/rand, 8 bytes: 6.10 ns/op
this package, 1000 bytes:19616 ns/op
this package, 8 bytes : 159 ns/op