foo
Revert "foo"

This reverts commit 81828ece0f10a07b6e7e4125e7e02d43a9503d98.
Revert "Revert "foo""

This reverts commit 924b7b21ed1db4ca3b455610133a44a63f0cb767.
extend to n blocks

requires generalizing adj(A) for nxn case
Merge branch 'master' of https://github.com/nmukh/Crypto_Python