base58编码与解码实现

最新推荐文章于 2025-10-07 12:56:14 发布

原创

最新推荐文章于 2025-10-07 12:56:14 发布 · 2.6k 阅读

2 ·

CC 4.0 BY-SA版权

文章标签：

#算法 #go #golang

本文详细介绍了比特币地址生成中使用的Base58编码算法，包括编码和解码的Go语言实现过程。Base58编码是将二进制数据转换为易于阅读的字符串形式，避免了容易混淆的字符，提高了地址的可用性和安全性。

Base58编码是比特币地址生成算法中的最后一个步骤。算法简单，和上大学时候学过的十进制转十六进制一样，只不过现在变成了十进制转58进制，核心过程就是不断的除58求余。下面是Go语言的实现过程：

func Base58Encode(data []byte) string {
	var (
		alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
		bigNum = new(big.Int).SetBytes(data)
		divisor = big.NewInt(58)
		modulus = big.NewInt(0)
		result string
	)
	for {
		if bigNum.Cmp(big.NewInt(0)) == 0 {
			break
		}
		bigNum.DivMod(bigNum, divisor, modulus)
		result = string(alphabet[modulus.Int64()])+result
	}
	return result
}

func Base58Decode(data string) ([]byte,error) {
	var alphabetMap = map[string]int64 {
		"1":0,
		"2":1,
		"3":2,
		"4":3,
		"5":4,
		"6":5,
		"7":6,
		"8":7,
		"9":8,
		"A":9,
		"B":10,
		"C":11,
		"D":12,
		"E":13,
		"F":14,
		"G":15,
		"H":16,
		"J":17,
		"K":18,
		"L":19,
		"M":20,
		"N":21,
		"P":22,
		"Q":23,
		"R":24,
		"S":25,
		"T":26,
		"U":27,
		"V":28,
		"W":29,
		"X":30,
		"Y":31,
		"Z":32,
		"a":33,
		"b":34,
		"c":35,
		"d":36,
		"e":37,