/// <summary>
/// Parses the packet given as byte array into the current
/// class and returns this with the populated parameters.
/// </summary>
/// <param name="bData">A byte array containing an OpenPGP
/// representation of the packet.</param>
/// <returns>Returns an SymSessionKeyPacket that containes
/// the parsed properties.</returns>
/// <remarks>No remarks</remarks>
public override Packet ParsePacket(byte[] bData)
{
if (bData.Length < 4)
{
throw new ArgumentException("Invalid Packet!");
}
Version = (SymSessionKeyPacketVersionNumbers)bData[0];
Algorithm = (SymAlgorithms)bData[1];
int ls2kLength = s2kSpecifier.Length(bData[2]);
if (ls2kLength == 0)
{
throw new ArgumentException("Invalid Packet!");
}
if (bData.Length < ls2kLength + 2)
{
throw new ArgumentException("Invalid Packet!");
}
byte[] bS2K = new byte[ls2kLength];
Array.Copy(bData, 2, bS2K, 0, ls2kLength);
s2kSpecifier.ParseSpecifier(bS2K);
//check if there is an encrypted session key attached
if (bData.Length > 2 + ls2kLength)
{
bEncryptedSessionKey = new byte[bData.Length - (ls2kLength + 2)];
Array.Copy(bData, 2 + ls2kLength, bEncryptedSessionKey, 0, bEncryptedSessionKey.Length);
}
else
{
bEncryptedSessionKey = new byte[0];
}
this.bIsUpdated = false;
return(this);
}
