intro to cryptography

Cryptology

The art and science of making and breaking "secret codes."

Cryptography

The making of "secret codes.

The breaking of "secret codes.

Cryptanalysis

the result of encryption is ?

ciphertext

In a ? cipher, the same key is used to encrypt and to decrypt

symmetric

? key cryptography where the encryption and decryption keys are different

• aka asymmetric crypto

public

public key cryptography is divided into three classes :

integer factorization

finite field cryptography

elliptic curve cryptography

with this function type…..

a one-way function for which the inverse direction is easy if some useful information is known, but difficult otherwise.

trapdoor function