Multimedia - Cryptology - Cryptanalysis - - Arabic - Video 6

Plaintext
ciphertext - coded message
➢ cipher - algorithm for transforming plaintext to ciphertext
➢ key - info used in cipher known only to sender/receive
r ➢ encipher (encrypt) - converting plaintext to ciphertext
➢ decipher (decrypt) - recovering plaintext from ciphertext
➢ cryptography - study of encryption principles/methods
➢ cryptanalysis (codebreaking) - study of principles/ methods of deciphering ciphertext without knowing key
➢ cryptology