TripleDES.cs 2.2 KB

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  1. using System.IO;
  2. using System.Security.Cryptography;
  3. using System.Text;
  4. namespace Admin.NET.Core;
  5. public static class TripleDES
  6. {
  7. /// <summary>
  8. /// 加密文件
  9. /// </summary>
  10. /// <param name="inputFile">待加密文件路径</param>
  11. /// <param name="outputFile">加密后的文件路径</param>
  12. /// <param name="password">密码 (24位长度)</param>
  13. public static void EncryptFile(string inputFile, string outputFile, string password)
  14. {
  15. using (TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider())
  16. {
  17. tdes.Mode = CipherMode.ECB;
  18. tdes.Padding = PaddingMode.PKCS7;
  19. tdes.Key = Encoding.UTF8.GetBytes(password);
  20. using (FileStream inputFileStream = new FileStream(inputFile, FileMode.Open))
  21. using (FileStream encryptedFileStream = new FileStream(outputFile, FileMode.Create))
  22. using (CryptoStream cryptoStream = new CryptoStream(encryptedFileStream, tdes.CreateEncryptor(), CryptoStreamMode.Write))
  23. {
  24. inputFileStream.CopyTo(cryptoStream);
  25. }
  26. }
  27. }
  28. /// <summary>
  29. /// 加密文件
  30. /// </summary>
  31. /// <param name="inputFile">加密的文件路径</param>
  32. /// <param name="outputFile">解密后的文件路径</param>
  33. /// <param name="password">密码 (24位长度)</param>
  34. public static void DecryptFile(string inputFile, string outputFile, string password)
  35. {
  36. using (TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider())
  37. {
  38. tdes.Mode = CipherMode.ECB;
  39. tdes.Padding = PaddingMode.PKCS7;
  40. tdes.Key = Encoding.UTF8.GetBytes(password);
  41. using (FileStream encryptedFileStream = new FileStream(inputFile, FileMode.Open))
  42. using (FileStream decryptedFileStream = new FileStream(outputFile, FileMode.Create))
  43. using (CryptoStream cryptoStream = new CryptoStream(encryptedFileStream, tdes.CreateDecryptor(), CryptoStreamMode.Read))
  44. {
  45. cryptoStream.CopyTo(decryptedFileStream);
  46. }
  47. }
  48. }
  49. }