Cryptography Flashcards
The bombs was developed by?
Alan Turing
Rectangular tablet of letters:polyalpabetic cipher is called?
Tabula Recta
Enigma was used to send encoded messages during which war?
WW2
Weakness that allowed enigma machine to be cracked?
No letter would encrypt to itself
Wrapping a piece of paper on a rod cryptography ?
Scytale
Crypto quiz puzzle example of
Substitution cipher
Not part of enigma machines key?
Orientation of the lights
First step to crack enigma was done by?
Marian Rejewski
Enigma machine conditions of several?
Rotors
Steps to operate the enigma ?
Set wheels to todays key from code book
Operator chooses message key
Encode message key twice to avoid error
Set wheels to message key
Encrypt and send message
Whole reason it’s considered good encryption from some video?
Factoring a large number into two primes is hard
Father of info theory
Claude Shannon
Ron Robert l, Ari Shamir; and leoanard Allan’s encryption algorithm consists of?
2 large prime numbers
If a file is encrypted with a Alice’s public key?
Anyone with a Alice’s private key can decrypt it
What type of modern encryption uses the same key to encrypt and decrypt data?
SKE symmetric key encryption
Unique key by sending and receiving messages based on two user keys?
Diffe-Hellman
