加密问题,郁闷啊???????????????? http://community.csdn.net/Expert/FAQ/FAQ_Index.asp?id=35935 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 我想问一下,这个key一定是要8位的么? 很详细的。你看能不能用。。using System; using System.IO; using System.Text; using System.Security.Cryptography; using System.Web; namespace Test.Com { /// <summary> /// DESEncryptor 的摘要说明。 /// </summary> public class DESEncryptor { #region 私有成员 /// <summary> /// 输入字符串 /// </summary> private string inputString=null; /// <summary> /// 输出字符串 /// </summary> private string outString=null; /// <summary> /// 输入文件路径 /// </summary> private string inputFilePath=null; /// <summary> /// 输出文件路径 /// </summary> private string outFilePath=null; /// <summary> /// 加密密钥 /// </summary> private string encryptKey=null; /// <summary> /// 解密密钥 /// </summary> private string decryptKey=null; /// <summary> /// 提示信息 /// </summary> private string noteMessage=null; #endregion #region 公共属性 /// <summary> /// 输入字符串 /// </summary> public string InputString { get{return inputString;} set{inputString=value;} } /// <summary> /// 输出字符串 /// </summary> public string OutString { get{return outString;} set{outString=value;} } /// <summary> /// 输入文件路径 /// </summary> public string InputFilePath { get{return inputFilePath;} set{inputFilePath=value;} } /// <summary> /// 输出文件路径 /// </summary> public string OutFilePath { get{return outFilePath;} set{outFilePath=value;} } /// <summary> /// 加密密钥 /// </summary> public string EncryptKey { get{return encryptKey;} set{encryptKey=value;} } /// <summary> /// 解密密钥 /// </summary> public string DecryptKey { get{return decryptKey;} set{decryptKey=value;} } /// <summary> /// 错误信息 /// </summary> public string NoteMessage { get{return noteMessage;} set{noteMessage=value;} } #endregion #region 构造函数 public DESEncryptor() { // // TODO: 在此处添加构造函数逻辑 // } #endregion #region DES加密字符串 /// <summary> /// 加密字符串 /// 注意:密钥必须为8位 /// </summary> /// <param name="strText">字符串</param> /// <param name="encryptKey">密钥</param> public void DesEncrypt() { byte[] byKey=null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; try { byKey = System.Text.Encoding.UTF8.GetBytes(this.encryptKey.Substring(0,8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray = Encoding.UTF8.GetBytes(this.inputString); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write) ; cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); this.outString=Convert.ToBase64String(ms.ToArray()); } catch(System.Exception error) { this.noteMessage=error.Message; } } #endregion #region DES解密字符串 /// <summary> /// 解密字符串 /// </summary> /// <param name="this.inputString">加了密的字符串</param> /// <param name="decryptKey">密钥</param> public void DesDecrypt() { byte[] byKey = null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; byte[] inputByteArray = new Byte[this.inputString.Length]; try { byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0,8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(this.inputString); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); System.Text.Encoding encoding = new System.Text.UTF8Encoding(); this.outString=encoding.GetString(ms.ToArray()); } catch(System.Exception error) { this.noteMessage=error.Message; } } #endregion #region DES加密文件 /// <summary> /// DES加密文件 /// </summary> /// <param name="this.inputFilePath">源文件路径</param> /// <param name="this.outFilePath">输出文件路径</param> /// <param name="encryptKey">密钥</param> public void FileDesEncrypt() { byte[] byKey=null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; try { byKey = System.Text.Encoding.UTF8.GetBytes(this.encryptKey.Substring(0,8)); FileStream fin = new FileStream(this.inputFilePath, FileMode.Open, FileAccess.Read); FileStream fout = new FileStream(this.outFilePath, FileMode.OpenOrCreate, FileAccess.Write); fout.SetLength(0); //Create variables to help with read and write. byte[] bin = new byte[100]; //This is intermediate storage for the encryption. long rdlen = 0; //This is the total number of bytes written. long totlen = fin.Length; //This is the total length of the input file. int len; //This is the number of bytes to be written at a time. DES des = new DESCryptoServiceProvider(); CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write); //Read from the input file, then encrypt and write to the output file. while(rdlen < totlen) { len = fin.Read(bin, 0, 100); encStream.Write(bin, 0, len); rdlen = rdlen + len; } encStream.Close(); fout.Close(); fin.Close(); } catch(System.Exception error) { this.noteMessage=error.Message.ToString(); } } #endregion #region DES解密文件 /// <summary> /// 解密文件 /// </summary> /// <param name="this.inputFilePath">加密了的文件路径</param> /// <param name="this.outFilePath">输出文件路径</param> /// <param name="decryptKey">密钥</param> public void FileDesDecrypt() { byte[] byKey = null; byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; try { byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0,8)); FileStream fin = new FileStream(this.inputFilePath, FileMode.Open, FileAccess.Read); FileStream fout = new FileStream(this.outFilePath, FileMode.OpenOrCreate, FileAccess.Write); fout.SetLength(0); //Create variables to help with read and write. byte[] bin = new byte[100]; //This is intermediate storage for the encryption. long rdlen = 0; //This is the total number of bytes written. long totlen = fin.Length; //This is the total length of the input file. int len; //This is the number of bytes to be written at a time. DES des = new DESCryptoServiceProvider(); CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); //Read from the input file, then encrypt and write to the output file. while(rdlen < totlen) { len = fin.Read(bin, 0, 100); encStream.Write(bin, 0, len); rdlen = rdlen + len; } encStream.Close(); fout.Close(); fin.Close(); } catch(System.Exception error) { this.noteMessage=error.Message.ToString(); } } #endregion #region MD5 /// <summary> /// MD5 Encrypt /// </summary> /// <param name="strText">text</param> /// <returns>md5 Encrypt string</returns> public void MD5Encrypt() { MD5 md5 = new MD5CryptoServiceProvider(); byte[] result = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(this.inputString)); this.outString=System.Text.Encoding.Default.GetString(result); } #endregion } } 郁闷,默认的key和iv一定要8位的 C# Substring()越界问题 这个for循环看不懂 用那个谷歌翻译网站 在IE8下出现找不到main_zh-CN.js这个文件 页面关闭是执行时间该往哪写 dataGridView获取控件的值 怎么让窗体更漂亮 请问MFC的功能,是不是NET全部实现了??如果没有全部包装,那NET相当与MFC的百分之几??(只讨论WinForm开发) 求高手 解决 按钮上显示图片问题(会了不难,我不会) 如何真正的关闭和数据库的连接? 如何将combox或其它如checkBox添加到listBox中..... Timer对象的Elapsed事件显示窗体的问题
using System;
using System.IO;
using System.Text;
using System.Security.Cryptography;
using System.Web; namespace Test.Com
{
/// <summary>
/// DESEncryptor 的摘要说明。
/// </summary>
public class DESEncryptor
{
#region 私有成员
/// <summary>
/// 输入字符串
/// </summary>
private string inputString=null;
/// <summary>
/// 输出字符串
/// </summary>
private string outString=null;
/// <summary>
/// 输入文件路径
/// </summary>
private string inputFilePath=null;
/// <summary>
/// 输出文件路径
/// </summary>
private string outFilePath=null;
/// <summary>
/// 加密密钥
/// </summary>
private string encryptKey=null;
/// <summary>
/// 解密密钥
/// </summary>
private string decryptKey=null;
/// <summary>
/// 提示信息
/// </summary>
private string noteMessage=null;
#endregion
#region 公共属性
/// <summary>
/// 输入字符串
/// </summary>
public string InputString
{
get{return inputString;}
set{inputString=value;}
}
/// <summary>
/// 输出字符串
/// </summary>
public string OutString
{
get{return outString;}
set{outString=value;}
}
/// <summary>
/// 输入文件路径
/// </summary>
public string InputFilePath
{
get{return inputFilePath;}
set{inputFilePath=value;}
}
/// <summary>
/// 输出文件路径
/// </summary>
public string OutFilePath
{
get{return outFilePath;}
set{outFilePath=value;}
}
/// <summary>
/// 加密密钥
/// </summary>
public string EncryptKey
{
get{return encryptKey;}
set{encryptKey=value;}
}
/// <summary>
/// 解密密钥
/// </summary>
public string DecryptKey
{
get{return decryptKey;}
set{decryptKey=value;}
}
/// <summary>
/// 错误信息
/// </summary>
public string NoteMessage
{
get{return noteMessage;}
set{noteMessage=value;}
}
#endregion
#region 构造函数
public DESEncryptor()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
#endregion
#region DES加密字符串
/// <summary>
/// 加密字符串
/// 注意:密钥必须为8位
/// </summary>
/// <param name="strText">字符串</param>
/// <param name="encryptKey">密钥</param>
public void DesEncrypt()
{
byte[] byKey=null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(this.encryptKey.Substring(0,8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.UTF8.GetBytes(this.inputString);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write) ;
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
this.outString=Convert.ToBase64String(ms.ToArray());
}
catch(System.Exception error)
{
this.noteMessage=error.Message;
}
}
#endregion
#region DES解密字符串
/// <summary>
/// 解密字符串
/// </summary>
/// <param name="this.inputString">加了密的字符串</param>
/// <param name="decryptKey">密钥</param>
public void DesDecrypt()
{
byte[] byKey = null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
byte[] inputByteArray = new Byte[this.inputString.Length];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0,8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(this.inputString);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = new System.Text.UTF8Encoding();
this.outString=encoding.GetString(ms.ToArray());
}
catch(System.Exception error)
{
this.noteMessage=error.Message;
}
}
#endregion
#region DES加密文件
/// <summary>
/// DES加密文件
/// </summary>
/// <param name="this.inputFilePath">源文件路径</param>
/// <param name="this.outFilePath">输出文件路径</param>
/// <param name="encryptKey">密钥</param>
public void FileDesEncrypt()
{
byte[] byKey=null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(this.encryptKey.Substring(0,8));
FileStream fin = new FileStream(this.inputFilePath, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(this.outFilePath, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time.
DES des = new DESCryptoServiceProvider();
CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
//Read from the input file, then encrypt and write to the output file.
while(rdlen < totlen)
{
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
} encStream.Close();
fout.Close();
fin.Close();
}
catch(System.Exception error)
{
this.noteMessage=error.Message.ToString(); }
}
#endregion
#region DES解密文件
/// <summary>
/// 解密文件
/// </summary>
/// <param name="this.inputFilePath">加密了的文件路径</param>
/// <param name="this.outFilePath">输出文件路径</param>
/// <param name="decryptKey">密钥</param>
public void FileDesDecrypt()
{
byte[] byKey = null;
byte[] IV= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0,8));
FileStream fin = new FileStream(this.inputFilePath, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(this.outFilePath, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time.
DES des = new DESCryptoServiceProvider();
CryptoStream encStream = new CryptoStream(fout, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
//Read from the input file, then encrypt and write to the output file.
while(rdlen < totlen)
{
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
} encStream.Close();
fout.Close();
fin.Close();
}
catch(System.Exception error)
{
this.noteMessage=error.Message.ToString();
}
}
#endregion
#region MD5
/// <summary>
/// MD5 Encrypt
/// </summary>
/// <param name="strText">text</param>
/// <returns>md5 Encrypt string</returns>
public void MD5Encrypt()
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] result = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(this.inputString));
this.outString=System.Text.Encoding.Default.GetString(result);
}
#endregion }
}