C# 加密-Rijndael

Rijndael 属对称加密,对称加密在加密和解密时都使用相同的密钥。2000 年 10 月,NIST 选择 Rijndael(发音为 "Rhine dale")作为 AES 算法,用以取代 DES。

Rijndael 的名称空间是:

System.Security.Cryptography
byte[] plaintextBuffer = System.Text.Encoding.UTF8.GetBytes("明文");

//加密
Rijndael rijndael = Rijndael.Create();
ICryptoTransform transform = rijndael.CreateEncryptor();
byte[] cipherTextBuffer = transform.TransformFinalBlock(plaintextBuffer, 0, plaintextBuffer.Length);
lbl.Text = Convert.ToBase64String(cipherTextBuffer) + "<br />";
transform.Dispose();

//解密
Rijndael rijndael2 = Rijndael.Create();
ICryptoTransform transform2 = rijndael2.CreateDecryptor(rijndael.Key, rijndael.IV);
byte[] decryption = transform2.TransformFinalBlock(cipherTextBuffer, 0, cipherTextBuffer.Length);
lbl.Text += System.Text.Encoding.UTF8.GetString(decryption) + "<br />";
transform2.Dispose();

解密时,使用加密的 Key 和 IV。

posted on 2009-11-30 11:19  冬日阳光  阅读(3892)  评论(0编辑  收藏  举报

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