C#

CSharp加解密

先是MD5加密

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private static MD5 md5 = new MD5Cng();

public static string PasswordEncrypt(string aPassword)
{
    byte[] bytes = md5.ComputeHash(Encoding.UTF8.GetBytes(aPassword+"doyoulikeme?"));
    return Convert.ToBase64String(bytes);
}

加解密

加密

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public static string Encrypt(string aStr, string aAddition)
{
    byte[] keyArray = Encoding.UTF8.GetBytes(aAddition);
    JObject jobj = new JObject();
    jobj["value"] = aStr;
    jobj["time"] = DateTime.Now;
    byte[] encryptArray = Encoding.UTF8.GetBytes(jobj.ToString());
    RijndaelManaged rDel = new RijndaelManaged();
    rDel.Key = keyArray;
    rDel.Mode = CipherMode.ECB;
    rDel.Padding = PaddingMode.PKCS7;
    ICryptoTransform cTransform = rDel.CreateEncryptor();
    byte[] resultArray = cTransform.TransformFinalBlock(encryptArray, 0, encryptArray.Length);
    string result = Convert.ToBase64String(resultArray);
    return result;
}

解密

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public static string Decrypt(string aEncryptStr, string aAddition)
{
    byte[] keyArray = Encoding.UTF8.GetBytes(aAddition);
    byte[] toEncryptArray = Convert.FromBase64String(aEncryptStr);
    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);
    string result = Encoding.UTF8.GetString(resultArray);
    JObject jobj = JObject.Parse(result);
    return jobj["value"].ToString();
}