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这个类是关于加密，解密的操作，文件的一些高级操作
1.MySecurity 加密字符串
2.MySecurity 加密字符串 密钥为系统默认 0123456789
3.MySecurity 加密文件
4.MySecurity 解密字符串
5.MySecurity 解密文件
6.MySecurity MD5加密
7.MySecurity Base64加密
8.MySecurity Base64解密
看下面代码吧
[C#] 纯文本查看 复制代码
/// <summary>
/// 类说明：Assistant
/// 编 码 人：苏飞
/// 联系方式：361983679
/// 更新网站：http://www.sufeinet.com/thread-655-1-1.html
/// </summary>
using System;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections;
namespace DotNet.Utilities
{
/// <summary>
/// MySecurity(安全类) 的摘要说明。
/// </summary>
public class MySecurity
{
/// <summary>
/// 初始化安全类
/// </summary>
public MySecurity()
{
///默认密码
key = "0123456789";
}
private string key; //默认密钥
private byte[] sKey;
private byte[] sIV;
#region 加密字符串
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns>输出加密后字符串</returns>
static public string SEncryptString(string inputStr, string keyStr)
{
MySecurity ws = new MySecurity();
return ws.EncryptString(inputStr, keyStr);
}
/// <summary>
/// 加密字符串
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns>输出加密后字符串</returns>
public string EncryptString(string inputStr, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
byte[] inputByteArray = Encoding.Default.GetBytes(inputStr);
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[8];
sIV = new byte[8];
for (int i = 0; i < 8; i++)
sKey = hb;
for (int i = 8; i < 16; i++)
sIV[i - 8] = hb;
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
cs.Close();
ms.Close();
return ret.ToString();
}
#endregion
#region 加密字符串 密钥为系统默认 0123456789
/// <summary>
/// 加密字符串 密钥为系统默认
/// </summary>
/// <param name="inputStr">输入字符串</param>
/// <returns>输出加密后字符串</returns>
static public string SEncryptString(string inputStr)
{
MySecurity ws = new MySecurity();
return ws.EncryptString(inputStr, "");
}
#endregion
#region 加密文件
/// <summary>
/// 加密文件
/// </summary>
/// <param name="filePath">输入文件路径</param>
/// <param name="savePath">加密后输出文件路径</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns></returns>
public bool EncryptFile(string filePath, string savePath, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
FileStream fs = File.OpenRead(filePath);
byte[] inputByteArray = new byte[fs.Length];
fs.Read(inputByteArray, 0, (int)fs.Length);
fs.Close();
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[8];
sIV = new byte[8];
for (int i = 0; i < 8; i++)
sKey = hb;
for (int i = 8; i < 16; i++)
sIV[i - 8] = hb;
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
fs = File.OpenWrite(savePath);
foreach (byte b in ms.ToArray())
{
fs.WriteByte(b);
}
fs.Close();
cs.Close();
ms.Close();
return true;
}
#endregion
#region 解密字符串
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <param name="keyStr">密钥</param>
/// <returns>解密后的结果</returns>
static public string SDecryptString(string inputStr, string keyStr)
{
MySecurity ws = new MySecurity();
return ws.DecryptString(inputStr, keyStr);
}
/// <summary>
/// 解密字符串 密钥为系统默认
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <returns>解密后的结果</returns>
static public string SDecryptString(string inputStr)
{
MySecurity ws = new MySecurity();
return ws.DecryptString(inputStr, "");
}
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="inputStr">要解密的字符串</param>
/// <param name="keyStr">密钥</param>
/// <returns>解密后的结果</returns>
public string DecryptString(string inputStr, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
byte[] inputByteArray = new byte[inputStr.Length / 2];
for (int x = 0; x < inputStr.Length / 2; x++)
{
int i = (Convert.ToInt32(inputStr.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[8];
sIV = new byte[8];
for (int i = 0; i < 8; i++)
sKey = hb;
for (int i = 8; i < 16; i++)
sIV[i - 8] = hb;
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
return System.Text.Encoding.Default.GetString(ms.ToArray());
}
#endregion
#region 解密文件
/// <summary>
/// 解密文件
/// </summary>
/// <param name="filePath">输入文件路径</param>
/// <param name="savePath">解密后输出文件路径</param>
/// <param name="keyStr">密码，可以为“”</param>
/// <returns></returns>
public bool DecryptFile(string filePath, string savePath, string keyStr)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
if (keyStr == "")
keyStr = key;
FileStream fs = File.OpenRead(filePath);
byte[] inputByteArray = new byte[fs.Length];
fs.Read(inputByteArray, 0, (int)fs.Length);
fs.Close();
byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
SHA1 ha = new SHA1Managed();
byte[] hb = ha.ComputeHash(keyByteArray);
sKey = new byte[8];
sIV = new byte[8];
for (int i = 0; i < 8; i++)
sKey = hb;
for (int i = 8; i < 16; i++)
sIV[i - 8] = hb;
des.Key = sKey;
des.IV = sIV;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
fs = File.OpenWrite(savePath);
foreach (byte b in ms.ToArray())
{
fs.WriteByte(b);
}
fs.Close();
cs.Close();
ms.Close();
return true;
}
#endregion
#region MD5加密
/// <summary>
/// 128位MD5算法加密字符串
/// </summary>
/// <param name="text">要加密的字符串</param>
public static string MD5(string text)
{
//如果字符串为空，则返回
if (Tools.IsNullOrEmpty<string>(text))
{
return "";
}
//返回MD5值的字符串表示
return MD5(text);
}
/// <summary>
/// 128位MD5算法加密Byte数组
/// </summary>
/// <param name="data">要加密的Byte数组</param>
public static string MD5(byte[] data)
{
//如果Byte数组为空，则返回
if (Tools.IsNullOrEmpty<byte[]>(data))
{
return "";
}
try
{
//创建MD5密码服务提供程序
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
//计算传入的字节数组的哈希值
byte[] result = md5.ComputeHash(data);
//释放资源
md5.Clear();
//返回MD5值的字符串表示
return Convert.ToBase64String(result);
}
catch
{
//LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message);
return "";
}
}
#endregion
#region Base64加密
/// <summary>
/// Base64加密
/// </summary>
/// <param name="text">要加密的字符串</param>
/// <returns></returns>
public static string EncodeBase64(string text)
{
//如果字符串为空，则返回
if (Tools.IsNullOrEmpty<string>(text))
{
return "";
}
try
{
char[] Base64Code = new char[]{'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T',
'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n',
'o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7',
'8','9','+','/','='};
byte empty = (byte)0;
ArrayList byteMessage = new ArrayList(Encoding.Default.GetBytes(text));
StringBuilder outmessage;
int messageLen = byteMessage.Count;
int page = messageLen / 3;
int use = 0;
if ((use = messageLen % 3) > 0)
{
for (int i = 0; i < 3 - use; i++)
byteMessage.Add(empty);
page++;
}
outmessage = new System.Text.StringBuilder(page * 4);
for (int i = 0; i < page; i++)
{
byte[] instr = new byte[3];
instr[0] = (byte)byteMessage[i * 3];
instr[1] = (byte)byteMessage[i * 3 + 1];
instr[2] = (byte)byteMessage[i * 3 + 2];
int[] outstr = new int[4];
outstr[0] = instr[0] >> 2;
outstr[1] = ((instr[0] & 0x03) << 4) ^ (instr[1] >> 4);
if (!instr[1].Equals(empty))
outstr[2] = ((instr[1] & 0x0f) << 2) ^ (instr[2] >> 6);
else
outstr[2] = 64;
if (!instr[2].Equals(empty))
outstr[3] = (instr[2] & 0x3f);
else
outstr[3] = 64;
outmessage.Append(Base64Code[outstr[0]]);
outmessage.Append(Base64Code[outstr[1]]);
outmessage.Append(Base64Code[outstr[2]]);
outmessage.Append(Base64Code[outstr[3]]);
}
return outmessage.ToString();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region Base64解密
/// <summary>
/// Base64解密
/// </summary>
/// <param name="text">要解密的字符串</param>
public static string DecodeBase64(string text)
{
//如果字符串为空，则返回
if (Tools.IsNullOrEmpty<string>(text))
{
return "";
}
//将空格替换为加号
text = text.Replace(" ", "+");
try
{
if ((text.Length % 4) != 0)
{
return "包含不正确的BASE64编码";
}
if (!Regex.IsMatch(text, "^[A-Z0-9/+=]*$", RegexOptions.IgnoreCase))
{
return "包含不正确的BASE64编码";
}
string Base64Code = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
int page = text.Length / 4;
ArrayList outMessage = new ArrayList(page * 3);
char[] message = text.ToCharArray();
for (int i = 0; i < page; i++)
{
byte[] instr = new byte[4];
instr[0] = (byte)Base64Code.IndexOf(message[i * 4]);
instr[1] = (byte)Base64Code.IndexOf(message[i * 4 + 1]);
instr[2] = (byte)Base64Code.IndexOf(message[i * 4 + 2]);
instr[3] = (byte)Base64Code.IndexOf(message[i * 4 + 3]);
byte[] outstr = new byte[3];
outstr[0] = (byte)((instr[0] << 2) ^ ((instr[1] & 0x30) >> 4));
if (instr[2] != 64)
{
outstr[1] = (byte)((instr[1] << 4) ^ ((instr[2] & 0x3c) >> 2));
}
else
{
outstr[2] = 0;
}
if (instr[3] != 64)
{
outstr[2] = (byte)((instr[2] << 6) ^ instr[3]);
}
else
{
outstr[2] = 0;
}
outMessage.Add(outstr[0]);
if (outstr[1] != 0)
outMessage.Add(outstr[1]);
if (outstr[2] != 0)
outMessage.Add(outstr[2]);
}
byte[] outbyte = (byte[])outMessage.ToArray(Type.GetType("System.Byte"));
return Encoding.Default.GetString(outbyte);
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
}
}
作者: ufowiner 时间: 2013-11-4 13:52
//如果字符串为空，则返回
if (Tools.IsNullOrEmpty<string>(text))
这个类里面 Tools 在哪边？
作者: 站长苏飞 时间: 2013-11-4 14:19
ufowiner 发表于 2013-11-4 13:52
//如果字符串为空，则返回
if (Tools.IsNullOrEmpty(text))
Tools可以修改为String
作者: ufowiner 时间: 2013-11-4 14:26
O(∩_∩)O谢谢作者: soonhot 时间: 2014-2-19 22:00
file:///C:\Users\Administrator\AppData\Roaming\Tencent\Users\417767\QQ\WinTemp\RichOle\YFBBC99M~S@08{`@F0BRWAD.jpg
作者: soonhot 时间: 2014-2-19 22:03
d:\>csc /target:library MySecurity.cs
Microsoft(R) Visual C# 编译器版本 4.0.30319.33440
用于 Microsoft(R) .NET Framework 4.5
版权所有 (C) Microsoft Corporation。保留所有权利。
MySecurity.cs(255,24): error CS0308: 非泛型
方法“string.IsNullOrEmpty(string)”不能与类型参数一起使用
c:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll:
(与前一个错误相关的符号位置)
MySecurity.cs(270,24): error CS0308: 非泛型
方法“string.IsNullOrEmpty(string)”不能与类型参数一起使用
c:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll:
(与前一个错误相关的符号位置)
MySecurity.cs(307,24): error CS0308: 非泛型
方法“string.IsNullOrEmpty(string)”不能与类型参数一起使用
c:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll:
(与前一个错误相关的符号位置)
MySecurity.cs(370,24): error CS0308: 非泛型
方法“string.IsNullOrEmpty(string)”不能与类型参数一起使用
c:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll:
(与前一个错误相关的符号位置)
作者: soonhot 时间: 2014-2-19 22:39
改成string也不行。。。
作者: west_dragon 时间: 2015-12-10 16:40
楼主加油，我们都看好你哦。
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