30 Questions
What is the branch of mathematics encompassing both cryptography and cryptanalysis?
Cryptology
What is the process of disguising a message to hide its substance called?
Encryption
What is the term for the range of possible key values in a modern cryptographic algorithm?
Keyspace
What is the name for the practitioners of breaking ciphertext?
Cryptanalysts
What is the name for the mathematical function used for encryption and decryption?
Cryptographic algorithm
What is the process of turning ciphertext back into plaintext called?
Decryption
What is the main assumption about the attacker's knowledge of the cryptographic algorithm?
The attacker knows every detail of the cryptographic algorithm
In which type of attack can the attacker choose the plaintext that gets encrypted, potentially obtaining more information about the key?
Chosen-Plaintext Attack
What type of cipher involves replacing each character in an alphabet with another character in the same alphabet or even by a symbol of a different alphabet?
Polyalphabetic Substitution Cipher
What is a characteristic of the Vigenère Polyalphabetic Substitution Cipher?
It is weak against count statistics of natural language plaintexts
What is an S-Box in modern ciphers?
A software or hardware module for substitution operation
What was thought to be unbreakable for a long time due to its characteristic of smearing the statistics of natural language texts?
Vigenère Polyalphabetic Substitution Cipher
What did Thomas Jefferson's Cipher Wheel aim to protect communications from?
Cryptanalysis
Which type of attack involves the attacker knowing only the cipher text of several messages encrypted with the same key and/or several keys?
Ciphertext-Only Attack
What is the process of disguising a message in such a way as to hide its substance called?
Encryption
What is the name for the practitioners of breaking ciphertext?
Cryptanalysts
What is the name for the branch of mathematics encompassing both cryptography and cryptanalysis?
Cryptology
What is the name for a cryptographic algorithm, also called a cipher, which is the mathematical function used for encryption and decryption?
Substitution
What is the security of a modern cryptographic algorithm based on?
Symmetric key
In which process are both encryption and decryption operations dependent on the key?
Key management
What is the characteristic of the Vigenère Polyalphabetic Substitution Cipher?
It smears the characteristic statistics of natural language text
In which type of attack can the attacker choose a series of plaintexts based on the result of previous encryption, leading to potential differential cryptanalysis?
Adaptive Chosen-Plaintext Attack
What is the main assumption about the attacker's knowledge of the cryptographic algorithm?
The attacker knows every detail of the cryptographic algorithm
What is the process of disguising a message to hide its substance called?
Steganography
What is an S-Box in modern ciphers?
A module implementing substitution operation
What did Thomas Jefferson's Cipher Wheel aim to protect communications from?
Eavesdropping
What type of cipher involves replacing each character in an alphabet with another character in the same alphabet or even by a symbol of a different alphabet?
Caesar Monoalphabetic Substitution Cipher
What is the branch of mathematics encompassing both cryptography and cryptanalysis?
'Cryptomathematics'
What is the term for the range of possible key values in a modern cryptographic algorithm?
'Cipher key space'
What is the process of turning ciphertext back into plaintext called?
'Decryption'
Test your knowledge of cryptology, including cryptography, cryptanalysis, and the branch of mathematics that encompasses both. Learn about the art and science of keeping messages secure, breaking ciphertext, and the practitioners involved in these fields.
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