internal ModDetectionCodePacket( BcpgInputStream bcpgIn) { if (bcpgIn == null) { throw new ArgumentNullException("bcpgIn"); } this.digest = new byte[20]; bcpgIn.ReadFully(this.digest); }
public MPInteger( BcpgInputStream bcpgIn) { if (bcpgIn == null) { throw new ArgumentNullException("bcpgIn"); } int length = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte(); byte[] bytes = new byte[(length + 7) / 8]; bcpgIn.ReadFully(bytes); this.val = new BigInteger(1, bytes); }
internal SecretKeyPacket( BcpgInputStream bcpgIn) { if (this is SecretSubkeyPacket) { pubKeyPacket = new PublicSubkeyPacket(bcpgIn); } else { pubKeyPacket = new PublicKeyPacket(bcpgIn); } s2kUsage = bcpgIn.ReadByte(); if (s2kUsage == UsageChecksum || s2kUsage == UsageSha1) { encAlgorithm = (SymmetricKeyAlgorithmTag)bcpgIn.ReadByte(); s2k = new S2k(bcpgIn); } else { encAlgorithm = (SymmetricKeyAlgorithmTag)s2kUsage; } if (!(s2k != null && s2k.Type == S2k.GnuDummyS2K && s2k.ProtectionMode == 0x01)) { if (s2kUsage != 0) { if (((int)encAlgorithm) < 7) { iv = new byte[8]; } else { iv = new byte[16]; } bcpgIn.ReadFully(iv); } } secKeyData = bcpgIn.ReadAll(); }
public MarkerPacket( BcpgInputStream bcpgIn) { bcpgIn.ReadFully(marker); }
internal SignaturePacket( BcpgInputStream bcpgIn) { version = bcpgIn.ReadByte(); if (version == 3 || version == 2) { // int l = bcpgIn.ReadByte(); signatureType = bcpgIn.ReadByte(); creationTime = (((long)bcpgIn.ReadByte() << 24) | ((long)bcpgIn.ReadByte() << 16) | ((long)bcpgIn.ReadByte() << 8) | (uint)bcpgIn.ReadByte()) * 1000L; keyId |= (long)bcpgIn.ReadByte() << 56; keyId |= (long)bcpgIn.ReadByte() << 48; keyId |= (long)bcpgIn.ReadByte() << 40; keyId |= (long)bcpgIn.ReadByte() << 32; keyId |= (long)bcpgIn.ReadByte() << 24; keyId |= (long)bcpgIn.ReadByte() << 16; keyId |= (long)bcpgIn.ReadByte() << 8; keyId |= (uint)bcpgIn.ReadByte(); keyAlgorithm = (PublicKeyAlgorithmTag)bcpgIn.ReadByte(); hashAlgorithm = (HashAlgorithmTag)bcpgIn.ReadByte(); } else if (version == 4) { signatureType = bcpgIn.ReadByte(); keyAlgorithm = (PublicKeyAlgorithmTag)bcpgIn.ReadByte(); hashAlgorithm = (HashAlgorithmTag)bcpgIn.ReadByte(); int hashedLength = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte(); byte[] hashed = new byte[hashedLength]; bcpgIn.ReadFully(hashed); // // read the signature sub packet data. // SignatureSubpacketsParser sIn = new SignatureSubpacketsParser( new MemoryStream(hashed, false)); IList v = Platform.CreateArrayList(); SignatureSubpacket sub; while ((sub = sIn.ReadPacket()) != null) { v.Add(sub); } hashedData = new SignatureSubpacket[v.Count]; for (int i = 0; i != hashedData.Length; i++) { SignatureSubpacket p = (SignatureSubpacket)v[i]; if (p is IssuerKeyId) { keyId = ((IssuerKeyId)p).KeyId; } else if (p is SignatureCreationTime) { creationTime = DateTimeUtilities.DateTimeToUnixMs( ((SignatureCreationTime)p).GetTime()); } hashedData[i] = p; } int unhashedLength = (bcpgIn.ReadByte() << 8) | bcpgIn.ReadByte(); byte[] unhashed = new byte[unhashedLength]; bcpgIn.ReadFully(unhashed); sIn = new SignatureSubpacketsParser(new MemoryStream(unhashed, false)); v.Clear(); while ((sub = sIn.ReadPacket()) != null) { v.Add(sub); } unhashedData = new SignatureSubpacket[v.Count]; for (int i = 0; i != unhashedData.Length; i++) { SignatureSubpacket p = (SignatureSubpacket)v[i]; if (p is IssuerKeyId) { keyId = ((IssuerKeyId)p).KeyId; } unhashedData[i] = p; } } else { throw new Exception("unsupported version: " + version); } fingerprint = new byte[2]; bcpgIn.ReadFully(fingerprint); switch (keyAlgorithm) { case PublicKeyAlgorithmTag.RsaGeneral: case PublicKeyAlgorithmTag.RsaSign: MPInteger v = new MPInteger(bcpgIn); signature = new MPInteger[] { v }; break; case PublicKeyAlgorithmTag.Dsa: MPInteger r = new MPInteger(bcpgIn); MPInteger s = new MPInteger(bcpgIn); signature = new MPInteger[] { r, s }; break; case PublicKeyAlgorithmTag.ElGamalEncrypt: // yep, this really does happen sometimes. case PublicKeyAlgorithmTag.ElGamalGeneral: MPInteger p = new MPInteger(bcpgIn); MPInteger g = new MPInteger(bcpgIn); MPInteger y = new MPInteger(bcpgIn); signature = new MPInteger[] { p, g, y }; break; default: if (keyAlgorithm >= PublicKeyAlgorithmTag.Experimental_1 && keyAlgorithm <= PublicKeyAlgorithmTag.Experimental_11) { signature = null; MemoryStream bOut = new MemoryStream(); int ch; while ((ch = bcpgIn.ReadByte()) >= 0) { bOut.WriteByte((byte)ch); } signatureEncoding = bOut.ToArray(); } else { throw new IOException("unknown signature key algorithm: " + keyAlgorithm); } break; } }