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如何对密码进行哈希处理

c#securityhashpasswordswindows-phone-7
165

我想在手机上存储密码的哈希值，但是不确定该如何操作。我只能找到加密方法。如何正确地对密码进行哈希处理？

12个回答
0
  var sha1 = SHA1.Create();      

  byte[] bytes = Encoding.UTF8.GetBytes("Your String Data");

  byte[] hash = sha1.ComputeHash(bytes);


    var sBuilder = new StringBuilder();

    for (int i = 0; i < hash.Length; i++)
    {
        sBuilder.Append(hash[i].ToString("X"));
    }

    Console.WriteLine(sBuilder.ToString());  //Hash value in Hex
0
这是一个使用.NET 7.0的示例。
using Microsoft.AspNetCore.Cryptography.KeyDerivation;
using System.Security.Cryptography;

Console.Write("Enter a password: ");
string? password = Console.ReadLine();

// Generate a 128-bit salt using a sequence of
// cryptographically strong random bytes.
byte[] salt = RandomNumberGenerator.GetBytes(128 / 8); // divide by 8 to convert bits to bytes
Console.WriteLine($"Salt: {Convert.ToBase64String(salt)}");

// derive a 256-bit subkey (use HMACSHA256 with 100,000 iterations)
string hashed = Convert.ToBase64String(KeyDerivation.Pbkdf2(
    password: password!,
    salt: salt,
    prf: KeyDerivationPrf.HMACSHA256,
    iterationCount: 100000,
    numBytesRequested: 256 / 8));

Console.WriteLine($"Hashed: {hashed}");

/*
 * SAMPLE OUTPUT
 *
 * Enter a password: Xtw9NMgx
 * Salt: CGYzqeN4plZekNC88Umm1Q==
 * Hashed: Gt9Yc4AiIvmsC1QQbe2RZsCIqvoYlst2xbz0Fs8aHnw=
 */
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