本文實(shí)例講述了C#使用DES和AES實(shí)現(xiàn)加密解密功能。分享給大家供大家參考，具體如下：
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重慶分公司
using System;
using System.Text;
using System.Security.Cryptography;
using System.IO;
namespace MyCryptography
{
///
/// DES加密解密
///
public class DES
{
///
/// 獲取密鑰
///
private static string Key
{
get { return @"P@+#wG+Z"; }
}
///
/// 獲取向量
///
private static string IV
{
get { return @"L%n67}G\Mk@k%:~Y"; }
}
///
/// DES加密
///
/// 明文字符串
/// 密文
public static string DESEncrypt(string plainStr)
{
byte[] bKey = Encoding.UTF8.GetBytes(Key);
byte[] bIV = Encoding.UTF8.GetBytes(IV);
byte[] byteArray = Encoding.UTF8.GetBytes(plainStr);
string encrypt = null;
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, des.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write))
{
cStream.Write(byteArray, 0, byteArray.Length);
cStream.FlushFinalBlock();
encrypt = Convert.ToBase64String(mStream.ToArray());
}
}
}
catch { }
des.Clear();
return encrypt;
}
///
/// DES解密
///
/// 密文字符串
/// 明文
public static string DESDecrypt(string encryptStr)
{
byte[] bKey = Encoding.UTF8.GetBytes(Key);
byte[] bIV = Encoding.UTF8.GetBytes(IV);
byte[] byteArray = Convert.FromBase64String(encryptStr);
string decrypt = null;
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
try
{
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, des.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write))
{
cStream.Write(byteArray, 0, byteArray.Length);
cStream.FlushFinalBlock();
decrypt = Encoding.UTF8.GetString(mStream.ToArray());
}
}
}
catch { }
des.Clear();
return decrypt;
}
}
///
/// AES加密解密
///
public class AES
{
///
/// 獲取密鑰
///
private static string Key
{
get { return @")O[NB]6,YF}+efcaj{+oESb9d8>Z'e9M"; }
}
///
/// 獲取向量
///
private static string IV
{
get { return @"L+\~f4,Ir)b$=pkf"; }
}
///
/// 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();
try
{
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());
}
}
}
catch { }
aes.Clear();
return encrypt;
}
///
/// AES加密
///
/// 明文字符串
/// 加密失敗時(shí)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();
try
{
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());
}
}
}
catch { }
aes.Clear();
return decrypt;
}
///
/// AES解密
///
/// 密文字符串
/// 解密失敗時(shí)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);
}
}
}
PS：關(guān)于加密解密感興趣的朋友還可以參考本站在線工具：
文字在線加密解密工具（包含AES、DES、RC4等）：
http://tools.jb51.net/password/txt_encode
MD5在線加密工具:
http://tools.jb51.net/password/CreateMD5Password
在線散列/哈希算法加密工具:
http://tools.jb51.net/password/hash_encrypt
在線MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具：
http://tools.jb51.net/password/hash_md5_sha
在線sha1/sha224/sha256/sha384/sha512加密工具：
http://tools.jb51.net/password/sha_encode
更多關(guān)于C#相關(guān)內(nèi)容還可查看本站專題：《C#加密與解密算法與技巧總結(jié)》、《C#窗體操作技巧匯總》、《C#常見控件用法教程》、《WinForm控件用法總結(jié)》、《C#數(shù)據(jù)結(jié)構(gòu)與算法教程》、《C#數(shù)組操作技巧總結(jié)》及《C#面向?qū)ο蟪绦蛟O(shè)計(jì)入門教程》
希望本文所述對大家C#程序設(shè)計(jì)有所幫助。
