.net7 AesCng 加密解密封装,仅支持Windows平台

        /// <summary>
        /// AesCng 加密
        /// 仅支持Windows平台
        /// </summary>
        /// <param name="value">明文（待加密）</param>
        /// <param name="keyValue">密钥大小为 128 位、192 位和 256 位</param>
        /// <returns></returns>
        public static (string, string) AesCngEncrypt(string value, string keyValue)
        {
            if (OperatingSystem.IsWindows())
            {
                using (AesCng aesCng = new())
                {
                    aesCng.Key = Encoding.UTF8.GetBytes(keyValue);
                    aesCng.GenerateIV();
                    using (MemoryStream memoryStream = new())
                    {
                        using (CryptoStream cryptoStream = new(memoryStream, aesCng.CreateEncryptor(), CryptoStreamMode.Write))
                        {
                            byte[] plainText = Encoding.UTF8.GetBytes(value);
                            cryptoStream.Write(plainText, 0, plainText.Length);
                            cryptoStream.FlushFinalBlock();
                            return (Convert.ToBase64String(memoryStream.ToArray()), Convert.ToBase64String(aesCng.IV));
                        }
                    }
                }
            }
            else
            {
                return (string.Empty, string.Empty);
            }
        }
        /// <summary>
        /// AesCng 解密
        /// 仅支持Windows平台
        /// </summary>
        /// <param name="value">密文（待解密）</param>
        /// <param name="keyValue">密钥大小为 128 位、192 位和 256 位</param>
        /// <param name="iv">加密时的随机初始化向量 </param>
        /// <returns></returns>
        public static string AesCngDecrypt(string value, string keyValue, string iv)
        {
            if (OperatingSystem.IsWindows())
            {
                using (AesCng aesCng = new())
                {
                    aesCng.Key = Encoding.UTF8.GetBytes(keyValue);
                    aesCng.IV = Convert.FromBase64String(iv);
                    using (MemoryStream memoryStream = new(Convert.FromBase64String(value)))
                    {
                        using (CryptoStream cryptoStream = new(memoryStream, aesCng.CreateDecryptor(), CryptoStreamMode.Read))
                        {
                            using (MemoryStream plainStream = new())
                            {
                                cryptoStream.CopyTo(plainStream);
                                return Encoding.UTF8.GetString(plainStream.ToArray());
                            }
                        }
                    }
                }
            }
            else
            {
                return string.Empty;
            }
        }

 测试截图：

 

 测试代码：

            Console.WriteLine("----AesCngEncrypt加密");
            (value1, tag1) = AESOperation.AesCngEncrypt("祖国强盛", "qqqq7897qqqq7897");
            (value2, tag2) = AESOperation.AesCngEncrypt("12", "qqqq7897qqqq7897");
            (value3, tag3) = AESOperation.AesCngEncrypt("123", "qqqq7897qqqq7897");
            (value4, tag4) = AESOperation.AesCngEncrypt("1234", "qqqq7897qqqq7897");
            (value5, tag5) = AESOperation.AesCngEncrypt("12347896", "qqqq7897qqqq7897");
            (value6, tag6) = AESOperation.AesCngEncrypt("12347896XXXX", "qqqq7897qqqq7897");
            (value7, tag7) = AESOperation.AesCngEncrypt("12347896XXXXOOOO", "qqqq7897qqqq7897");

            Console.WriteLine(value1);
            Console.WriteLine(value2);
            Console.WriteLine(value3);
            Console.WriteLine(value4);
            Console.WriteLine(value5);
            Console.WriteLine(value6);
            Console.WriteLine(value7);
            Console.WriteLine("----iv");
            Console.WriteLine(tag1);
            Console.WriteLine(tag2);
            Console.WriteLine(tag3);
            Console.WriteLine(tag4);
            Console.WriteLine(tag5);
            Console.WriteLine(tag6);
            Console.WriteLine(tag7);
            Console.WriteLine("----AesCngEncrypt解密");
            value8 = AESOperation.AesCngDecrypt(value1, "qqqq7897qqqq7897", tag1);
            value9 = AESOperation.AesCngDecrypt(value2, "qqqq7897qqqq7897", tag2);
            value10 = AESOperation.AesCngDecrypt(value3, "qqqq7897qqqq7897", tag3);
            value11 = AESOperation.AesCngDecrypt(value4, "qqqq7897qqqq7897", tag4);
            value12 = AESOperation.AesCngDecrypt(value5, "qqqq7897qqqq7897", tag5);
            value13 = AESOperation.AesCngDecrypt(value6, "qqqq7897qqqq7897", tag6);
            value14 = AESOperation.AesCngDecrypt(value7, "qqqq7897qqqq7897", tag7);
            Console.WriteLine(value8);
            Console.WriteLine(value9);
            Console.WriteLine(value10);
            Console.WriteLine(value11);
            Console.WriteLine(value12);
            Console.WriteLine(value13);
            Console.WriteLine(value14);
            Console.Read();