Flearn Website Header

Cryptography Study Cards


Master Cryptography with our interactive study cards designed for effective learning. These flashcards use proven spaced repetition techniques to help you memorize key concepts, definitions, and facts. Perfect for students, professionals, and lifelong learners seeking to improve knowledge retention and ace exams through active recall practice.


Click any card to reveal the answer

What does cryptography mean?

click to flip

Answer:

The practice of securing information by transforming it into an unreadable format

What is the difference between encryption and decryption?

click to flip

Answer:

Encryption converts plaintext to ciphertext; decryption converts ciphertext back to plaintext

What is a cipher?

click to flip

Answer:

An algorithm used to perform encryption or decryption

What is plaintext?

click to flip

Answer:

The original readable message before encryption

What is ciphertext?

click to flip

Answer:

The encrypted message that appears scrambled or unreadable

What is a cryptographic key?

click to flip

Answer:

A piece of information used by a cipher to encrypt or decrypt data

What is symmetric encryption?

click to flip

Answer:

Encryption where the same key is used for both encryption and decryption

What is asymmetric encryption?

click to flip

Answer:

Encryption that uses a pair of keys - one public and one private

📢
Advertisement
See Your Advert Here!

What is the Caesar cipher?

click to flip

Answer:

A substitution cipher that shifts each letter by a fixed number of positions in the alphabet

What is AES?

click to flip

Answer:

Advanced Encryption Standard - a widely used symmetric encryption algorithm

What is RSA?

click to flip

Answer:

A public-key cryptosystem used for secure data transmission

What is a hash function?

click to flip

Answer:

A mathematical function that converts input data into a fixed-size string of characters

What is SHA-256?

click to flip

Answer:

A cryptographic hash function that produces a 256-bit hash value

What is the purpose of digital signatures?

click to flip

Answer:

To verify the authenticity and integrity of digital messages or documents

What is a public key?

click to flip

Answer:

The publicly shared key in asymmetric cryptography used for encryption or signature verification

What is a private key?

click to flip

Answer:

The secret key in asymmetric cryptography used for decryption or signing

📢
Advertisement
See Your Advert Here!

What is key exchange?

click to flip

Answer:

The process of securely sharing cryptographic keys between parties

What is the Diffie-Hellman protocol?

click to flip

Answer:

A method for securely exchanging cryptographic keys over a public channel

What is a brute force attack?

click to flip

Answer:

An attack that tries all possible keys or passwords until the correct one is found

What is cryptanalysis?

click to flip

Answer:

The study of methods for breaking cryptographic systems

What is perfect forward secrecy?

click to flip

Answer:

A property ensuring that past communications remain secure even if long-term keys are compromised

What is a salt in cryptography?

click to flip

Answer:

Random data added to a password before hashing to prevent rainbow table attacks

What is steganography?

click to flip

Answer:

The practice of hiding information within other non-secret data or media

What is a one-time pad?

click to flip

Answer:

A theoretically unbreakable cipher that uses a random key as long as the message

📢
Advertisement
See Your Advert Here!

What is the difference between authentication and authorization?

click to flip

Answer:

Authentication verifies identity; authorization determines what actions are permitted

Remember: Use all available resources to study. Flearn alone cannot guarantee success in any exams—make sure to supplement your learning!