加密代码:
- //加密代码,注意会覆盖原文件,里面有我的公钥,你要用时记得覆盖我的公钥
- private bool encryptFile(string filename)
- {
- FileStream f;
- try
- {
- f = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
- }
- catch
- {
- return false;
- }
- Random r = new Random();
- Thread.Sleep(10*r.Next(3,8));
- RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);
- rsa.FromXmlString("<RSAKeyValue><Modulus>w7nNT8U7kwTw8UqLk0lROxmfTRZnQrMH1QrNyUGtoeAJ3w+iH08j+h83cPWxwPoxpXm1cgCLFWtCFWY1rkQDCCLxJhUIwYTbGKTg9h0uUVfNxGiNji7dcHShd01UYpZjHCwOar1wjJD4vJqVJCk++59UUMhE9IUATuSUVpRy1bE=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>");
- //导入密钥
- byte[] data = new byte[16];
- ArrayList con = new ArrayList();
- while(f.Read(data, 0, 16)!=0)
- {
- byte[] result = rsa.Encrypt(data,false);
- //Thread.Sleep(10 * r.Next(2, 7));
- con.Add(result);
- }
- //加密
- f.Seek(0, SeekOrigin.Begin);
- foreach(byte[] d in con)
- {
- f.Write(d, 0, d.Length);
- }
- f.Close();
- return true;
- }
解密代码:
- //解密代码,覆盖原文件,返回值表示是否解密成功
- private bool decryptFile(string filename,string key)
- {
- FileStream f;
- try
- {
- f = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
- }
- catch
- {
- return false;
- }
- RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);
- try
- {
- rsa.FromXmlString(key);
- }
- catch
- {
- return false;
- }
- byte[] data = new byte[128];
- ArrayList con = new ArrayList();
- while (f.Read(data, 0, 128) != 0)
- {
- byte[] result;
- try
- {
- result = rsa.Decrypt(data, false);
- }
- catch
- {
- return false;
- }
- con.Add(result);
- }
- //解密
- f.SetLength(con.Count * 16);
- f.Seek(0, SeekOrigin.Begin);
- foreach (byte[] d in con)
- {
- f.Write(d, 0, d.Length);
- }
- f.Close();
- return true;
- }
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