Worksheets[AP CSP] Cryptography and Ciphers
Total questions: 15
Worksheet time: 15mins
Taking a secret message and reproducing the original plain text is known as?
Caesar Cipher
Encryption
Cipher Text
Decryption
an algorithm for performing encryption or decryption
cipher
decoder
encryption
key
The process of converting plaintext to ciphertext.
cryptography
cyphertext
decryption
encryption
When it is difficult for a computer to solve a problem in a reasonable amount of time, that problem is considered...
computationally hard
heuristic
unsolvable
complex
exponentially impossible
The random substitution cipher...
is an encryption technique that maps each letter of the alphabet to another randomly chosen letter of the alphabet.
is a technique for encryption that shifts the entire alphabet by some number of characters.
is an encryption technique involves shifting the alphabet differently per character in the key?
is the public key cryptosystem that can used only for key exchange (like mixing paint).
The Caesar cipher...
is an encryption technique that maps each letter of the alphabet to another randomly chosen letter of the alphabet.
is a technique for encryption that shifts the entire alphabet by some number of characters.
is an encryption technique involves shifting the alphabet differently per character in the key
is the public key cryptosystem that can used only for key exchange (like mixing paint).
The vigenere cipher...
is an encryption technique that maps each letter of the alphabet to another randomly chosen letter of the alphabet.
is a technique for encryption that shifts the entire alphabet by some number of characters.
is an encryption technique involves shifting the alphabet differently per character in the key
is the public key cryptosystem that can used only for key exchange (like mixing paint).
an attempt to forcibly decode a secret message without knowing the specifics of the cipher
brute force
decrpytion
cipher
hacking
Plaintext
original message
coded message
algorithm for transforming plaintext to ciphertext
info used in cipher known only to sender/receiver
ciphertext
•field of both cryptography and cryptanalysis
•study of encryption principles/methods
•converting plaintext to ciphertext
•coded message
cipher
•study of principles/methods of deciphering ciphertext without knowing key
•converting plaintext to ciphertext
•coded message
algorithm for transforming plaintext to ciphertext
key
algorithm for transforming plaintext to ciphertext
info used in cipher known only to sender/receiver
•recovering ciphertext from plaintext
•converting plaintext to ciphertext
Study of letters or groups of letters contained in a ciphertext in an attempt to partially reveal the message is called:
Frequency analysis
Cryptography
Encription
Decription
_______ is the science and art of transforming messages to make them secure and immune to attacks.
Cryptography
Cryptoanalysis
neither Cryptography nor Cryptoanalysis
either Cryptography or Cryptoanalysis
