c# AES encryption decryption algorithm

Little scum · Posted on 12/25/2015 2:30:37 PM

/// <summary>
/// AES加密
/// </summary>
/// <param name="encryptStr">明文</param>
/// <param name="key">密钥</param>
/// <returns></returns>
public static string Encrypt(string encryptStr,string key)
{
byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(encryptStr);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="decryptStr">密文</param>
/// <param name="key">密钥</param>
/// <returns></returns>
public static string Decrypt(string decryptStr,string key)
{
byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
byte[] toEncryptArray = Convert.FromBase64String(decryptStr);
RijndaelManaged rDel = new RijndaelManaged();
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return UTF8Encoding.UTF8.GetString(resultArray);
}

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xiaoweier · Posted on 12/25/2015 3:36:13 PM

Help me think about whether there is an SM3 algorithm, hurry up and find it

Little scum · Posted on 12/25/2015 5:05:47 PM

xiaoweier posted on 2015-12-25 15:36
Help me think about whether there is an SM3 algorithm, hurry up and find it

I don't understand C algorithms

Little scum · Posted on 12/25/2015 5:17:13 PM

key must be 16,32 bits long

[Source] c# AES encryption decryption algorithm