using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;namespace Mask{ public class AESEncryptHelper { /// /// 获取密钥 /// private static string Key { get { return @")O[NB]6,YF}+efcaj{+oESb9d8>Z‘e9M"; } } /// /// 获取向量 /// private static string IV { get { return @"L+\~f4,Ir)b$=pkf"; } } #region 参数是byte[]类型 /// /// AES加密 /// /// 被加密的明文 /// 密钥 /// 向量 /// 密文 public static Byte[] AESEncrypt(Byte[] Data, String Key, String Vector) { Byte[] bKey = new Byte[32]; Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length); Byte[] bVector = new Byte[16]; Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length); Byte[] Cryptograph = null; // 加密后的密文 Rijndael Aes = Rijndael.Create(); try { // 开辟一块内存流 using (MemoryStream Memory = new MemoryStream()) { // 把内存流对象包装成加密流对象 using (CryptoStream Encryptor = new CryptoStream(Memory, Aes.CreateEncryptor(bKey, bVector), CryptoStreamMode.Write)) { // 明文数据写入加密流 Encryptor.Write(Data, 0, Data.Length); Encryptor.FlushFinalBlock(); Cryptograph = Memory.ToArray(); } } } catch { Cryptograph = null; } return Cryptograph; } /// /// AES解密 /// /// 被解密的密文 /// 密钥 /// 向量 /// 明文 public static Byte[] AESDecrypt(Byte[] Data, String Key, String Vector) { Byte[] bKey = new Byte[32]; Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length); Byte[] bVector = new Byte[16]; Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length); Byte[] original = null; // 解密后的明文 Rijndael Aes = Rijndael.Create(); try { // 开辟一块内存流，存储密文 using (MemoryStream Memory = new MemoryStream(Data)) { // 把内存流对象包装成加密流对象 using (CryptoStream Decryptor = new CryptoStream(Memory, Aes.CreateDecryptor(bKey, bVector), CryptoStreamMode.Read)) { // 明文存储区 using (MemoryStream originalMemory = new MemoryStream()) { Byte[] Buffer = new Byte[1024]; Int32 readBytes = 0; while ((readBytes = Decryptor.Read(Buffer, 0, Buffer.Length)) > 0) { originalMemory.Write(Buffer, 0, readBytes); } original = originalMemory.ToArray(); } } } } catch { original = null; } return original; } #endregion #region 参数是string类型 /// /// AES加密 /// /// 明文字符串 /// 密文 public static string AESEncrypt(string plainStr) { byte[] bKey = Encoding.UTF8.GetBytes(Key); byte[] bIV = Encoding.UTF8.GetBytes(IV); byte[] byteArray = Encoding.UTF8.GetBytes(plainStr); string encrypt = null; Rijndael aes = Rijndael.Create(); using (MemoryStream mStream = new MemoryStream()) { using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write)) { cStream.Write(byteArray, 0, byteArray.Length); cStream.FlushFinalBlock(); encrypt = Convert.ToBase64String(mStream.ToArray()); } } aes.Clear(); return encrypt; } /// /// AES加密 /// /// 明文字符串 /// 加密失败时是否返回 null，false 返回 String.Empty /// 密文 public static string AESEncrypt(string plainStr, bool returnNull) { string encrypt = AESEncrypt(plainStr); return returnNull ? encrypt : (encrypt == null ? String.Empty : encrypt); } /// /// AES解密 /// /// 密文字符串 /// 明文 public static string AESDecrypt(string encryptStr) { byte[] bKey = Encoding.UTF8.GetBytes(Key); byte[] bIV = Encoding.UTF8.GetBytes(IV); byte[] byteArray = Convert.FromBase64String(encryptStr); string decrypt = null; Rijndael aes = Rijndael.Create(); using (MemoryStream mStream = new MemoryStream()) { using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write)) { cStream.Write(byteArray, 0, byteArray.Length); cStream.FlushFinalBlock(); decrypt = Encoding.UTF8.GetString(mStream.ToArray()); } } aes.Clear(); return decrypt; } /// /// AES解密 /// /// 密文字符串 /// 解密失败时是否返回 null，false 返回 String.Empty /// 明文 public static string AESDecrypt(string encryptStr, bool returnNull) { string decrypt = AESDecrypt(encryptStr); return returnNull ? decrypt : (decrypt == null ? String.Empty : decrypt); } #endregion #region 256位AES加密算法 /// /// 256位AES加密 /// /// /// public static string Encrypt(string toEncrypt) { // 256-AES key byte[] keyArray = UTF8Encoding.UTF8.GetBytes(Key); byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); RijndaelManaged rDel = new RijndaelManaged(); rDel.Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } /// /// 256位AES解密 /// /// /// public static string Decrypt(string toDecrypt) { // 256-AES key byte[] keyArray = UTF8Encoding.UTF8.GetBytes(Key); byte[] toEncryptArray = Convert.FromBase64String(toDecrypt); 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); return UTF8Encoding.UTF8.GetString(resultArray); } #endregion }}
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace Mask{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// /// 加密 /// /// /// private void btnEncrypt_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(txtSourceText.Text)) { MessageBox.Show("没数据加毛密-_-!"); return; } else { txtResultText.Text = AESEncryptHelper.Encrypt(txtSourceText.Text); } } /// /// 解密 /// /// /// private void btnDecrypt_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(txtSourceText.Text)) { MessageBox.Show("没数据解毛密-_-!"); return; } else if (!IsBase64Formatted(txtSourceText.Text)) { MessageBox.Show("别逗了,我只认识被我加过密的？"); return; } else { txtResultText.Text = AESEncryptHelper.Decrypt(txtSourceText.Text); } } public static bool IsBase64Formatted(string input) { try { Convert.FromBase64String(input); return true; } catch { return false; } } }}