Cryptography Flashcards
Define cryptography.
The lock and the key that protects the message from unauthorised access.
What do you have to consider when choosing what cipher to use?
- Cost of information being intercepted
- how long information is valid
- complexity of cipher being used
Define cryptographers
Professionals that create coding systems
Define cryptanalyst.
Usually mathematics and linguists who remove the work from cryptographer.
Define cryptology.
Th study of cryptography
Define plaintext
The text before any disguise
Define ciphertext
The disguised version of the plain text
Define encrypt
Converting plain text to cipher text
Define decrypt
Converting a ciphertext back into plain text
Define confidentiality
Only owners of a shared secret key can encrypt and decrypt files.
Define authentication
Assurance of identity at the other end of communication link
Define integrity
Assurance that the message has not been identified during transit
Define nonrepudiation
Assurance that the sender cannot deny sending a message
What is a secret key method of encryption?
An encryption method were the person who receives
