Asp.Net C# AES加密、解密

Asp.Net C#续上次的DES加密、解密之后，再发一个AES的加密、解密。AES要注意的是32位密匙。

private static readonly String strAesKey = "iwww.maoblog.comiwww.maoblog.com";//加密所需32位密匙

/// <summary>
/// AES加密
/// </summary>
/// <param name="str">要加密字符串</param>
/// <returns>返回加密后字符串</returns>
public static String Encrypt_AES(String str)
{
    Byte[] keyArray = System.Text.UTF8Encoding.UTF8.GetBytes(strAesKey);
    Byte[] toEncryptArray = System.Text.UTF8Encoding.UTF8.GetBytes(str);

    System.Security.Cryptography.RijndaelManaged rDel = new System.Security.Cryptography.RijndaelManaged();
    rDel.Key = keyArray;
    rDel.Mode = System.Security.Cryptography.CipherMode.ECB;
    rDel.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

    System.Security.Cryptography.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="str">要解密字符串</param>
/// <returns>返回解密后字符串</returns>
public static String Decrypt_AES(String str)
{
    Byte[] keyArray = System.Text.UTF8Encoding.UTF8.GetBytes(strAesKey);
    Byte[] toEncryptArray = Convert.FromBase64String(str);

    System.Security.Cryptography.RijndaelManaged rDel = new System.Security.Cryptography.RijndaelManaged();
    rDel.Key = keyArray;
    rDel.Mode = System.Security.Cryptography.CipherMode.ECB;
    rDel.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

    System.Security.Cryptography.ICryptoTransform cTransform = rDel.CreateDecryptor();
    Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

    return System.Text.UTF8Encoding.UTF8.GetString(resultArray);
}