randomString

README

RandomString -- Library to make passwords without misleading letters

This package makes random passwords with fast logic described in this link.

The original logic is NOT goroutine safe because it shares rand.Source and the Int63() calls conflict. The logic in this package is using sync.Mutex to solve this.

package main

import (
  "fmt"

  "github.com/delphinus/random-string"
)

func main() {
  pass := randomString.Generate(8);
  fmt.Printf("simple password: %s\n", pass)
	// simple password: JEVGqkiW
}

Benchmark

go version
go version go1.8.1 darwin/amd64
go test -bench . -benchmem
BenchmarkRandomString/Runes-8              50000             35584 ns/op            1312 B/op          2 allocs/op
BenchmarkRandomString/Bytes-8              50000             35547 ns/op             512 B/op          2 allocs/op
BenchmarkRandomString/Remainder-8          50000             34095 ns/op             512 B/op          2 allocs/op
BenchmarkRandomString/Mask-8               50000             35362 ns/op             512 B/op          2 allocs/op
BenchmarkRandomString/MaskImproved-8      300000              4710 ns/op             512 B/op          2 allocs/op
BenchmarkRandomString/MaskSource-8        500000              3873 ns/op             512 B/op          2 allocs/op
PASS
ok      github.com/delphinus/random-string      11.885s

Documentation

Overview

Package randomString is written with referring this entry: http://stackoverflow.com/questions/22892120/how-to-generate-a-random-string-of-a-fixed-length-in-golang

Index

• Constants
• func Generate(n int) string

Constants

const LetterBytes = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789"

LetterBytes means letters to be used in random string. It contains all of alphabets and numbers, but lacks undistinguishable letters, 1, l, I, O, 0.

original: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

Functions

func Generate

func Generate(n int) string

Generate generates random string