lib/silccore/silcpacket.[ch] ****PARTLY DONE****
============================
+ o Implement silc_packet_engine_stop and silc_packet_stream_destroy.
+
o Implement ACK packet and packet payload.
o SilcPacketEngine. (***DONE)
=============
o Implement SILC Public Key Version 2 handling in sign/verify. Implement
- Version (V) identifier.
+ Version (V) identifier (***DONE)
- o Implement PKCS #1 sign/verify with hash OID.
+ o Implement PKCS #1 sign/verify with hash OID. (***TESTING NEEDED)
o Implement the defined SilcDH API. The definition is in
lib/silccrypt/silcdh.h.