本文介紹了如何使用密碼生成 Rijndael KEY 和 IV?的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！
問題描述
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如何使用密碼生成 Rijndael KEY 和 IV?密鑰長度必須為 256 位.
How to generate Rijndael KEY and IV using a passphrase? The key length must be in 256 bits.
推薦答案
這是我在網上找到的即插即用代碼.它只是工作:
This is plug and play code that I found on internet. It just works:
using System.IO;
using System.Security.Cryptography;
private static readonly byte[] SALT = new byte[] { 0x26, 0xdc, 0xff, 0x00, 0xad, 0xed, 0x7a, 0xee, 0xc5, 0xfe, 0x07, 0xaf, 0x4d, 0x08, 0x22, 0x3c };
public static byte[] Encrypt(byte[] plain, string password)
{
MemoryStream memoryStream;
CryptoStream cryptoStream;
Rijndael rijndael = Rijndael.Create();
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(password, SALT);
rijndael.Key = pdb.GetBytes(32);
rijndael.IV = pdb.GetBytes(16);
memoryStream = new MemoryStream();
cryptoStream = new CryptoStream(memoryStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write);
cryptoStream.Write(plain, 0, plain.Length);
cryptoStream.Close();
return memoryStream.ToArray();
}
public static byte[] Decrypt(byte[] cipher, string password)
{
MemoryStream memoryStream;
CryptoStream cryptoStream;
Rijndael rijndael = Rijndael.Create();
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(password, SALT);
rijndael.Key = pdb.GetBytes(32);
rijndael.IV = pdb.GetBytes(16);
memoryStream = new MemoryStream();
cryptoStream = new CryptoStream(memoryStream, rijndael.CreateDecryptor(), CryptoStreamMode.Write);
cryptoStream.Write(cipher, 0, cipher.Length);
cryptoStream.Close();
return memoryStream.ToArray();
}
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