Go 랜덤 16진수 문자열 생성

1 개요

Go 랜덤 16진수 문자열 생성

Go

CPU

-1.0s

MEM

-0M

-1.0s

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package main

import (
	"crypto/rand"
	"fmt"
)

func randToken(length int) string {
	b := make([]byte, length)
	rand.Read(b)
	return fmt.Sprintf("%x", b)
}

func main() {
	fmt.Println(randToken(8))  // 874765a815352ad3
	fmt.Println(randToken(16)) // 4981255c411f90cd6fbbc06eed49eb18
	fmt.Println(randToken(32)) // 2381c3b9b74a805ec2489403702002ddf55e5b7f91b11431d58bff07b8c6eadb
}

44e35fc2d5c6e874
a52de33ffbbccbecf2d355920fb1f679
d7154344f3400220ea6ddfd4f8dabe1664967f39a85f1620b087d50e8a0690d0

2 영문자

Go

Copy

package main

import (
	"crypto/rand"
	"fmt"
	"log"
)

const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

func randString(length int) (string, error) {
	b := make([]byte, length)
	if _, err := rand.Read(b); err != nil {
		return "", err
	}

	for i := range b {
		b[i] = charset[b[i]%byte(len(charset))]
	}

	return string(b), nil
}

func main() {
	str, err := randString(16)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(str) // geLi4Hgk3nOvofLJ
}

3 같이 보기

• Go 랜덤 문자열 생성