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C# ke ni jia mi suan fa shou ji

2008-12-13 08:24:28 编辑來源:互联网 评论
 
 
 
本文为【C#可逆加密算法收集】的拼音翻译版
  zui jin yao yong dao zhe ge shun dai shou ji xia
  yi xia shi guan yu dui cheng jia mi suan fa de C# shi xian dai ma , da jia ke yi gen ju xu yao geng gai bu tong de suan fa , wen zhong yi Rijndael suan fa wei li :view plaincopy to clipboardprint?
  using System;
  using System.IO;
  using System.Security.Cryptography;
  using System.Text;
  namespace DataCrypto
  {
  /// <summary>
  /// dui cheng jia mi suan fa lei
  /// </summary>
  public class SymmetricMethod
  {
  
  private SymmetricAlgorithm mobjCryptoService;
  private string Key;
  /// <summary>
  /// dui cheng jia mi lei de gou zao han shu
  /// </summary>
  public SymmetricMethod()
  {
  mobjCryptoService = new RijndaelManaged();
  Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7";
  }
  /// <summary>
  /// huo de mi yao
  /// </summary>
  /// <returns> mi yao </returns>
  private byte[] GetLegalKey()
  {
  string sTemp = Key;
  mobjCryptoService.GenerateKey();
  byte[] bytTemp = mobjCryptoService.Key;
  int KeyLength = bytTemp.Length;
  if (sTemp.Length > KeyLength)
  sTemp = sTemp.Substring(0, KeyLength);
  else if (sTemp.Length < KeyLength)
  sTemp = sTemp.PadRight(KeyLength, ' ');
  return ASCIIEncoding.ASCII.GetBytes(sTemp);
  }
  /// <summary>
  /// huo de chu shi xiang liang IV
  /// </summary>
  /// <returns> chu shi xiang liang IV</returns>
  private byte[] GetLegalIV()
  {
  string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk";
  mobjCryptoService.GenerateIV();
  byte[] bytTemp = mobjCryptoService.IV;
  int IVLength = bytTemp.Length;
  if (sTemp.Length > IVLength)
  sTemp = sTemp.Substring(0, IVLength);
  else if (sTemp.Length < IVLength)
  sTemp = sTemp.PadRight(IVLength, ' ');
  return ASCIIEncoding.ASCII.GetBytes(sTemp);
  }
  /// <summary>
  /// jia mi fang fa
  /// </summary>
  /// <param name="Source"> dai jia mi de chuan </param>
  /// <returns> jing guo jia mi de chuan </returns>
  public string Encrypto(string Source)
  {
  byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source);
  MemoryStream ms = new MemoryStream();
  mobjCryptoService.Key = GetLegalKey();
  mobjCryptoService.IV = GetLegalIV();
  ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor();
  CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write);
  cs.Write(bytIn, 0, bytIn.Length);
  cs.FlushFinalBlock();
  ms.Close();
  byte[] bytOut = ms.ToArray();
  return Convert.ToBase64String(bytOut);
  }
  /// <summary>
  /// jie mi fang fa
  /// </summary>
  /// <param name="Source"> dai jie mi de chuan </param>
  /// <returns> jing guo jie mi de chuan </returns>
  public string Decrypto(string Source)
  {
  byte[] bytIn = Convert.FromBase64String(Source);
  MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length);
  mobjCryptoService.Key = GetLegalKey();
  mobjCryptoService.IV = GetLegalIV();
  ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor();
  CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read);
  StreamReader sr = new StreamReader(cs);
  return sr.ReadToEnd();
  }
  }
  }【原文】【汉音对照
 
 
 
 
 
 
 
 
 
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zui jin yao yong dao zhe ge shun dai shou ji xia yi xia shi guan yu dui cheng jia mi suan fa de C# shi xian dai ma , da jia ke yi gen ju xu yao geng gai bu tong de suan fa , wen zhong yi Rijndael suan fa wei li :view plaincopy to clipboardprint? using System; using System.IO; using System.Security.Cryptography; using System.Text; namespace DataCrypto { /// <summary> /// dui cheng jia mi suan fa lei /// </summary> public class SymmetricMethod { private SymmetricAlgorithm mobjCryptoService; private string Key; /// <summary> /// dui cheng jia mi lei de gou zao han shu /// </summary> public SymmetricMethod() { mobjCryptoService = new RijndaelManaged(); Key = "Guz(%&hj7x89H$yuBI0456FtmaT5&fvHUFCy76*h%(HilJ$lhj!y6&(*jkP87jH7"; } /// <summary> /// huo de mi yao /// </summary> /// <returns> mi yao </returns> private byte[] GetLegalKey() { string sTemp = Key; mobjCryptoService.GenerateKey(); byte[] bytTemp = mobjCryptoService.Key; int KeyLength = bytTemp.Length; if (sTemp.Length > KeyLength) sTemp = sTemp.Substring(0, KeyLength); else if (sTemp.Length < KeyLength) sTemp = sTemp.PadRight(KeyLength, ' '); return ASCIIEncoding.ASCII.GetBytes(sTemp); } /// <summary> /// huo de chu shi xiang liang IV /// </summary> /// <returns> chu shi xiang liang IV</returns> private byte[] GetLegalIV() { string sTemp = "E4ghj*Ghg7!rNIfb&95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7&!hg4ui%$hjk"; mobjCryptoService.GenerateIV(); byte[] bytTemp = mobjCryptoService.IV; int IVLength = bytTemp.Length; if (sTemp.Length > IVLength) sTemp = sTemp.Substring(0, IVLength); else if (sTemp.Length < IVLength) sTemp = sTemp.PadRight(IVLength, ' '); return ASCIIEncoding.ASCII.GetBytes(sTemp); } /// <summary> /// jia mi fang fa /// </summary> /// <param name="Source"> dai jia mi de chuan </param> /// <returns> jing guo jia mi de chuan </returns> public string Encrypto(string Source) { byte[] bytIn = UTF8Encoding.UTF8.GetBytes(Source); MemoryStream ms = new MemoryStream(); mobjCryptoService.Key = GetLegalKey(); mobjCryptoService.IV = GetLegalIV(); ICryptoTransform encrypto = mobjCryptoService.CreateEncryptor(); CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Write); cs.Write(bytIn, 0, bytIn.Length); cs.FlushFinalBlock(); ms.Close(); byte[] bytOut = ms.ToArray(); return Convert.ToBase64String(bytOut); } /// <summary> /// jie mi fang fa /// </summary> /// <param name="Source"> dai jie mi de chuan </param> /// <returns> jing guo jie mi de chuan </returns> public string Decrypto(string Source) { byte[] bytIn = Convert.FromBase64String(Source); MemoryStream ms = new MemoryStream(bytIn, 0, bytIn.Length); mobjCryptoService.Key = GetLegalKey(); mobjCryptoService.IV = GetLegalIV(); ICryptoTransform encrypto = mobjCryptoService.CreateDecryptor(); CryptoStream cs = new CryptoStream(ms, encrypto, CryptoStreamMode.Read); StreamReader sr = new StreamReader(cs); return sr.ReadToEnd(); } } }
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