/** * @param in */ public ElGamalSecretBcpgKey( BcpgInputStream bcpgIn) { this.x = new MPInteger(bcpgIn); }
public UserIdPacket( BcpgInputStream bcpgIn) { this.idData = bcpgIn.ReadAll(); }
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; case PublicKeyAlgorithmTag.ECDsa: MPInteger ecR = new MPInteger(bcpgIn); MPInteger ecS = new MPInteger(bcpgIn); signature = new MPInteger[] { ecR, ecS }; 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; } }
public Packet ReadPacket() { int hdr = this.ReadByte(); if (hdr < 0) { return(null); } if ((hdr & 0x80) == 0) { throw new IOException("invalid header encountered"); } bool newPacket = (hdr & 0x40) != 0; PacketTag tag = 0; int bodyLen = 0; bool partial = false; if (newPacket) { tag = (PacketTag)(hdr & 0x3f); int l = this.ReadByte(); if (l < 192) { bodyLen = l; } else if (l <= 223) { int b = m_in.ReadByte(); bodyLen = ((l - 192) << 8) + (b) + 192; } else if (l == 255) { bodyLen = (m_in.ReadByte() << 24) | (m_in.ReadByte() << 16) | (m_in.ReadByte() << 8) | m_in.ReadByte(); } else { partial = true; bodyLen = 1 << (l & 0x1f); } } else { int lengthType = hdr & 0x3; tag = (PacketTag)((hdr & 0x3f) >> 2); switch (lengthType) { case 0: bodyLen = this.ReadByte(); break; case 1: bodyLen = (this.ReadByte() << 8) | this.ReadByte(); break; case 2: bodyLen = (this.ReadByte() << 24) | (this.ReadByte() << 16) | (this.ReadByte() << 8) | this.ReadByte(); break; case 3: partial = true; break; default: throw new IOException("unknown length type encountered"); } } BcpgInputStream objStream; if (bodyLen == 0 && partial) { objStream = this; } else { PartialInputStream pis = new PartialInputStream(this, partial, bodyLen); objStream = new BcpgInputStream(pis); } switch (tag) { case PacketTag.Reserved: return(new InputStreamPacket(objStream)); case PacketTag.PublicKeyEncryptedSession: return(new PublicKeyEncSessionPacket(objStream)); case PacketTag.Signature: return(new SignaturePacket(objStream)); case PacketTag.SymmetricKeyEncryptedSessionKey: return(new SymmetricKeyEncSessionPacket(objStream)); case PacketTag.OnePassSignature: return(new OnePassSignaturePacket(objStream)); case PacketTag.SecretKey: return(new SecretKeyPacket(objStream)); case PacketTag.PublicKey: return(new PublicKeyPacket(objStream)); case PacketTag.SecretSubkey: return(new SecretSubkeyPacket(objStream)); case PacketTag.CompressedData: return(new CompressedDataPacket(objStream)); case PacketTag.SymmetricKeyEncrypted: return(new SymmetricEncDataPacket(objStream)); case PacketTag.Marker: return(new MarkerPacket(objStream)); case PacketTag.LiteralData: return(new LiteralDataPacket(objStream)); case PacketTag.Trust: return(new TrustPacket(objStream)); case PacketTag.UserId: return(new UserIdPacket(objStream)); case PacketTag.UserAttribute: return(new UserAttributePacket(objStream)); case PacketTag.PublicSubkey: return(new PublicSubkeyPacket(objStream)); case PacketTag.SymmetricEncryptedIntegrityProtected: return(new SymmetricEncIntegrityPacket(objStream)); case PacketTag.ModificationDetectionCode: return(new ModDetectionCodePacket(objStream)); case PacketTag.Experimental1: case PacketTag.Experimental2: case PacketTag.Experimental3: case PacketTag.Experimental4: return(new ExperimentalPacket(tag, objStream)); default: throw new IOException("unknown packet type encountered: " + tag); } }
/// <summary>Construct an RSA public key from the passed in stream.</summary> public RsaPublicBcpgKey( BcpgInputStream bcpgIn) { this.n = new MPInteger(bcpgIn); this.e = new MPInteger(bcpgIn); }