1. Fragmentation:<span> Every upper layer message is fragmented into 2^14 equivalent to </span>16384
bytes or less blocks.
2. Compression: This one is optionally
applied and must be lossless. It may not increase content length by more than
1024 bytes.
3. Compute a MAC (Message Authentication
Code): For this purpose, a shared secret key has to be used. 4. Encryption: Inclusive of the MAC, the
compressed message is encrypted using symmetric encryption. It must not
increase the length by 1024 bytes or more.
5. Preparing a heading in the following
fields: Major Version (8 bits); Compression Length (16 bits); Minor Version (8
bits); and Content Type (8 bits).
mostly all the above mentioned use replication to infect computers but the one that uses replication to invest multiple computers at a time is Trojan horse.
