# Cryptographic Haikus

## Cryptographic Haikus

These are poetry in the same sense that playing a piano with a hammer is music. Enjoy!

AES cipher,

qualified to protect some

government data.

Elliptic curves have

difficult math properties.

Base ciphers on that!

Use Diffie-Hellman.

Exchange integers. Now you

have a shared secret.

Products of large primes,

hard to factor. Hard enough?

If no math breakthrough.

JN 25.

OP-20-G broke it.

Yamamoto died.

Joe Roquefort: hero

of cryptanalysis in

the Second World War.

Poles broke Enigma.

Do not get in math contests

with Slavic people.

Thomas Jefferson

invented cipher system

known as M-nine-four.

I do not know, but

I think this is strong enough.

Bruce Schneier said so.

Triple-DES cipher,

not so good. Work factor to

break: just eighty bits!.

`MSUAG`

`CBLWD`

`DPIJC`

Math gurus showed us

some hash weaknesses. Panic

ensues. New hash now!

Two thousand seven,

NIST says "New hash contest now!"

Five years later, done.

New hash is Keccak.

Sponge function, totally new,

this is a good plan.

Enigma machine

would have been quite strong enough.

Germans misused keys.

Diffusion: Shuffle.

Confusion: Substitute them.

Both are important.

"Change the S-boxes",

NSA said. Why was that?

Maybe a back door?

One-time pad gives us

perfect security if

we are quite careful.