129 lines
3.2 KiB
C#
129 lines
3.2 KiB
C#
using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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namespace Common;
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/// <summary>
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/// 与目标服务器通信将会加密
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/// </summary>
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public class AESHelper
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{
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static readonly byte[] Key =
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[
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0x11,
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0xF2,
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0xAF,
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0xCF,
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0xFF,
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0x8B,
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0x4C,
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0x7D,
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0x23,
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0x96,
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0x1B,
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0x32,
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0x43,
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0xA4,
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0x55,
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0xF6,
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0x29,
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0x1C,
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0x1B,
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0x92,
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0x23,
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0x44,
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0xB5,
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0xF6,
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];
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static readonly byte[] IV =
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[
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0xD1,
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0xF7,
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0xAB,
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0xCA,
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0xBC,
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0x7B,
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0x2C,
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0x3D,
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0xFA,
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0xAA,
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0xFC,
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0xA8,
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0x28,
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0x19,
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0x9C,
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0xB6,
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];
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public static byte[] EncryptStringToBytes_Aes(string plainText)
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{
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// Check arguments.
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if (plainText == null || plainText.Length <= 0)
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throw new ArgumentNullException(nameof(plainText), "can't be null");
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byte[] encrypted;
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// Create an Aes object
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// with the specified key and IV.
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using (Aes aesAlg = Aes.Create())
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{
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aesAlg.Key = Key;
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aesAlg.IV = IV;
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// Create an encryptor to perform the stream transform.
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ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
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// Create the streams used for encryption.
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using MemoryStream msEncrypt = new();
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using CryptoStream csEncrypt = new(
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msEncrypt,
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encryptor,
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CryptoStreamMode.Write
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);
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using (StreamWriter swEncrypt = new(csEncrypt))
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{
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//Write all data to the stream.
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swEncrypt.Write(plainText);
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}
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encrypted = msEncrypt.ToArray();
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}
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// Return the encrypted bytes from the memory stream.
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return encrypted;
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}
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public static string DecryptStringFromBytes_Aes(byte[] cipherText)
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{
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// Check arguments.
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if (cipherText == null || cipherText.Length <= 0)
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throw new ArgumentNullException(nameof(cipherText), "can't be null");
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// Declare the string used to hold
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// the decrypted text.
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string plaintext = string.Empty;
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// Create an Aes object
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// with the specified key and IV.
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using (Aes aesAlg = Aes.Create())
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{
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aesAlg.Key = Key;
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aesAlg.IV = IV;
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// Create a decryptor to perform the stream transform.
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ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
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// Create the streams used for decryption.
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using MemoryStream msDecrypt = new(cipherText);
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using CryptoStream csDecrypt = new(msDecrypt, decryptor, CryptoStreamMode.Read);
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using StreamReader srDecrypt = new(csDecrypt);
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// Read the decrypted bytes from the decrypting stream
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// and place them in a string.
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plaintext = srDecrypt.ReadToEnd();
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}
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return plaintext;
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}
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}
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