C#实现各种Hash计算

文章目录

C#实现各种Hash计算
- 涉及框架及库
- 目前支持可计算的类型
- - 核心代码
  - 完整可运行代码
- BCrypt
- 总结

涉及框架及库

自己在NuGet管理器里面安装即可

BouncyCastle.Cryptography：是加密算法和协议的.NET实现。

目前支持可计算的类型

BLAKE2B_160
BLAKE2B_256
BLAKE2B_384
BLAKE2B_512
BLAKE2S_128
BLAKE2S_160
BLAKE2S_224
BLAKE2S_256
BLAKE3_256
DSTU7564_256
DSTU7564_384
DSTU7564_512
GOST3411
GOST3411_2012_256
GOST3411_2012_512
KECCAK_224
KECCAK_256
KECCAK_288
KECCAK_384
KECCAK_512
MD2
MD4
MD5
RIPEMD128
RIPEMD160
RIPEMD256
RIPEMD320
SHA_1
SHA_224
SHA_256
SHA_384
SHA_512
SHA_512_224
SHA_512_256
SHA3_224
SHA3_256
SHA3_384
SHA3_512
SHAKE128_256
SHAKE256_512
SM3
TIGER
WHIRLPOOL

核心代码

根据对应的算法名称获取用以计算哈希的对象

var digest = DigestUtilities.GetDigest("md5");

将需要计算的字符串转换为字节数组

var pla = "1234";
var inBytes = Encoding.UTF8.GetBytes(pla);

其它数据源

文件

File.ReadAllBytes(filepath);

Hex字符串

Hex.Decode(pla);

Base64

Convert.FromBase64String(pla);

Stream流

using (Stream stream = new MemoryStream())
{stream.Read(inBytes, 0, (int)stream.Length);
}

计算Hash

// 获取输出字节数组大小
var outlen = digest.GetDigestSize();// 实例化一个接受输出结果的字节数组
var outBytes = new byte[outlen];// 数据搞里头
digest.BlockUpdate(inBytes, 0, inBytes.Length);// 结果搞出来
digest.DoFinal(outBytes, 0);// 打印Hash值
Console.WriteLine($"{Hex.ToHexString(outBytes)}");

完整可运行代码

private static string[] testDigests => new string []
{"BLAKE2B_160","BLAKE2B_256","BLAKE2B_384","BLAKE2B_512","BLAKE2S_128","BLAKE2S_160","BLAKE2S_224","BLAKE2S_256","BLAKE3_256","DSTU7564_256","DSTU7564_384","DSTU7564_512","GOST3411","GOST3411_2012_256","GOST3411_2012_512","KECCAK_224","KECCAK_256","KECCAK_288","KECCAK_384","KECCAK_512","MD2","MD4","MD5","RIPEMD128","RIPEMD160","RIPEMD256","RIPEMD320","SHA_1","SHA_224","SHA_256","SHA_384","SHA_512","SHA_512_224","SHA_512_256","SHA3_224","SHA3_256","SHA3_384","SHA3_512","SHAKE128_256","SHAKE256_512","SM3","TIGER","WHIRLPOOL",
}; static void Main(string[] args)
{IDigest digest = DigestUtilities.GetDigest("md5");var pla = "1234";var inBytes = Encoding.UTF8.GetBytes(pla);Console.ForegroundColor = ConsoleColor.Green;Console.Write($"明文消息");Console.ForegroundColor = ConsoleColor.White;Console.WriteLine($":{pla}{Environment.NewLine}");for (int i = 0; i < testDigests.Length; i++){digest = DigestUtilities.GetDigest(testDigests[i]);var outlen = digest.GetDigestSize();var outBytes = new byte[outlen];digest.BlockUpdate(inBytes, 0, inBytes.Length);digest.DoFinal(outBytes, 0);Console.ForegroundColor = ConsoleColor.Green;Console.Write($"{digest.AlgorithmName}");Console.ForegroundColor = ConsoleColor.White;Console.WriteLine($":{Hex.ToHexString(outBytes)}");}Console.ReadKey();
}

运行结果：
在这里插入图片描述

BCrypt

直接上代码片段，应该不难理解

char[] pw = "123".ToCharArray();
byte[] salt = new byte[16];
var rng = new SecureRandom();
rng.NextBytes(salt);
var cost = 10;
var hash = OpenBsdBCrypt.Generate(pw, salt, cost);
var hash2 = OpenBsdBCrypt.Generate("2a", pw, salt, cost);
Console.WriteLine($"{hash}");
Console.WriteLine($"{hash2}");