DES cipher skeleton text done
 AES introduction
IV purpose and Block cipher modes sketleton
Orthograph and typo
gitignore update
 Block ciphers construction introduction
General context updated
Added XKCD comic
XKCD comic
Merge branch 'ciphers' (early part)
Merge branch 'master' into ciphers
do not track Thumbs.db files
ECB mode encryption
AES cipher implementation
Merge branch 'ciphers'
Added chosen plaintext attack
added chapter on integrity