AES加密

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代码记录

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/// <summary>
/// 基于Rijndael算法实现的AES加密类
/// </summary>
public static class Aes
{
    /// <summary>
    /// 对称算法的密钥
    /// </summary>
    private static readonly byte[] Key = Convert.FromBase64String("rAO85BOVE3bIh2KEjbFlQ7uVYjzD5UdHGPET2YnDxbM=");

    /// <summary>
    /// 对称算法的初始化向量
    /// </summary>
    private static readonly byte[] IV = Convert.FromBase64String("fsUfF+aIEeTsp9SfmMvHkA==");

    /// <summary>
    /// 加密
    /// </summary>
    /// <param name="plainText">明文</param>
    /// <param name="encoding">编码方式（默认为UTF8）</param>
    /// <returns>密文（Base64编码）</returns>
    public static string Encrypt(string plainText, Encoding encoding = null)
    {
        encoding = encoding ?? Encoding.UTF8;
        using (var rij = new RijndaelManaged { Key = Key, IV = IV, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7 })
        {
            var plainBytes = encoding.GetBytes(plainText);
            return Convert.ToBase64String(rij.CreateEncryptor().TransformFinalBlock(plainBytes, 0, plainBytes.Length));
        }
    }

    /// <summary>
    /// 解密
    /// </summary>
    /// <param name="cipherText">密文（Base64编码）</param>
    /// <param name="encoding">编码方式（默认为UTF8）</param>
    /// <returns>明文</returns>
    public static string Decrypt(string cipherText, Encoding encoding = null)
    {
        encoding = encoding ?? Encoding.UTF8;
        using (var rij = new RijndaelManaged { Key = Key, IV = IV, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7 })
        {
            var cipherBytes = Convert.FromBase64String(cipherText);
            return encoding.GetString(rij.CreateDecryptor().TransformFinalBlock(cipherBytes, 0, cipherBytes.Length));
        }
    }
}