using System.IO; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Bcpg { /// Basic type for a PGP Signature sub-packet. public class SignatureSubpacket { private readonly SignatureSubpacketTag type; private readonly bool critical; private readonly bool isLongLength; internal byte[] data; protected internal SignatureSubpacket( SignatureSubpacketTag type, bool critical, bool isLongLength, byte[] data) { this.type = type; this.critical = critical; this.isLongLength = isLongLength; this.data = data; } public SignatureSubpacketTag SubpacketType { get { return type; } } public bool IsCritical() { return critical; } public bool IsLongLength() { return isLongLength; } /// Return the generic data making up the packet. public byte[] GetData() { return (byte[]) data.Clone(); } public void Encode( Stream os) { int bodyLen = data.Length + 1; if (isLongLength) { os.WriteByte(0xff); os.WriteByte((byte)(bodyLen >> 24)); os.WriteByte((byte)(bodyLen >> 16)); os.WriteByte((byte)(bodyLen >> 8)); os.WriteByte((byte)bodyLen); } else { if (bodyLen < 192) { os.WriteByte((byte)bodyLen); } else if (bodyLen <= 8383) { bodyLen -= 192; os.WriteByte((byte)(((bodyLen >> 8) & 0xff) + 192)); os.WriteByte((byte)bodyLen); } else { os.WriteByte(0xff); os.WriteByte((byte)(bodyLen >> 24)); os.WriteByte((byte)(bodyLen >> 16)); os.WriteByte((byte)(bodyLen >> 8)); os.WriteByte((byte)bodyLen); } } if (critical) { os.WriteByte((byte)(0x80 | (int) type)); } else { os.WriteByte((byte) type); } os.Write(data, 0, data.Length); } public override int GetHashCode() { return (critical ? 1 : 0) + 7 * (int)type + 49 * Arrays.GetHashCode(data); } public override bool Equals(object obj) { if (obj == this) return true; SignatureSubpacket other = obj as SignatureSubpacket; if (null == other) return false; return this.type == other.type && this.critical == other.critical && Arrays.AreEqual(this.data, other.data); } } }