cryptography Flashcards
what is the caeser cypher
The Caesar Cipher encrypts messages by moving the alphabet to the left or right by a certain number of places.
what is the “Key” in caeser cypher?
The direction and number of places moved is called the ‘Key’.
The ‘Key’ is used to decrypt the message by moving the alphabet the same number of places, but in the opposite direction.
What type of information can a barcode store
Product identification
Size/weight of product
Where the product has come from
Who manufactured the product
What does PGP stand for?
‘Pretty Good Privacy’
Which two keys does PGP use?
A public key
A private key
How does PGP encryption work?
PGP is most often used for sending encrypted messages between two people. PGP works by encrypting a message using a public key that’s tied to a specific user; when that user receives the message, they use a private key that’s known only to them to decrypt it.
