Stream CreateAndInitEncryptionStream(Stream baseStream, ZipEntry entry) { CryptoStream result = null; if ( (entry.Version < ZipConstants.VersionStrongEncryption) || (entry.Flags & (int)GeneralBitFlags.StrongEncryption) == 0) { PkzipClassicManaged classicManaged = new PkzipClassicManaged(); OnKeysRequired(entry.Name); if (HaveKeys == false) { throw new ZipException("No password available for encrypted stream"); } // Closing a CryptoStream will close the base stream as well so wrap it in an UncompressedStream // which doesnt do this. result = new CryptoStream(new UncompressedStream(baseStream), classicManaged.CreateEncryptor(key, null), CryptoStreamMode.Write); if ( (entry.Crc < 0) || (entry.Flags & 8) != 0) { WriteEncryptionHeader(result, entry.DosTime << 16); } else { WriteEncryptionHeader(result, entry.Crc); } } return result; }
/// <summary> /// Initializes encryption keys based on given password /// </summary> /// <param name="password">The password.</param> protected void InitializePassword(string password) { #if NETCF_1_0 keys = new uint[] { 0x12345678, 0x23456789, 0x34567890 }; byte[] rawPassword = ZipConstants.ConvertToArray(password); for (int i = 0; i < rawPassword.Length; ++i) { UpdateKeys((byte)rawPassword[i]); } #else PkzipClassicManaged pkManaged = new PkzipClassicManaged(); byte[] key = PkzipClassic.GenerateKeys(ZipConstants.ConvertToArray(password)); cryptoTransform_ = pkManaged.CreateEncryptor(key, null); #endif }
protected void InitializePassword(string pwd) { PkzipClassicManaged managed = new PkzipClassicManaged(); byte[] rgbKey = PkzipClassic.GenerateKeys(ZipConstants.ConvertToArray(pwd)); _cryptoTransform = managed.CreateEncryptor(rgbKey, null); }
private Stream CreateAndInitEncryptionStream(Stream baseStream, ZipEntry entry) { CryptoStream stream = null; if ((entry.Version < 50) || ((entry.Flags & 0x40) == 0)) { var managed = new PkzipClassicManaged(); OnKeysRequired(entry.Name); if (!HaveKeys) { throw new ZipException("No password available for encrypted stream"); } stream = new CryptoStream(new UncompressedStream(baseStream), managed.CreateEncryptor(_key, null), CryptoStreamMode.Write); if ((entry.Crc < 0L) || ((entry.Flags & 8) != 0)) { WriteEncryptionHeader(stream, entry.DosTime << 0x10); return stream; } WriteEncryptionHeader(stream, entry.Crc); } return stream; }