Cryptography CryptoAnalysis

What is cryptanalysis?

• The study of creating encrypted information or codes.

• The study of analyzing and encrypting decrypted information or codes.

• The study of analyzing and deciphering unencrypted information or codes.

• The study of analyzing and deciphering encrypted information or codes.

Define cryptography.

• The practice of securing communication from adversaries by converting plain text into a secret code or cipher.

• The practice of securing communication by using biometric authentication.

• The practice of securing communication by using physical locks and keys.

• The practice of securing communication by using firewalls and antivirus software.

What is a cipher?

• A cipher is a type of mathematical equation used to solve complex problems.

• A cipher is a method of encoding or decoding information by substituting or rearranging letters, numbers, or symbols.

• A cipher is a type of computer virus.

• A cipher is a type of lock used to secure information.

Name one famous historical cipher.

• Vigenère cipher

• Enigma machine

• Caesar cipher

• Rail fence cipher

What is the history of cryptography?

• The history of cryptography dates back to ancient times.

• Cryptography was first used during the Industrial Revolution.

• The history of cryptography began in the Renaissance period.

• Cryptography was invented in the 20th century.

What is encryption?

• The process of converting information into a code or cipher to prevent unauthorized access.

• The process of converting information into a visual representation to prevent unauthorized access.

• The process of converting information into a language that only authorized individuals can understand.

• The process of converting information into plain text to prevent unauthorized access.

What is decryption?

• Process of converting encrypted data back into its original form

• Process of converting encrypted data into a different form

• Process of converting data into a random sequence

• Process of converting decrypted data into an encrypted form

What are the two main types of encryption algorithms?

• public encryption and private encryption

• hash encryption and cipher encryption

• one-way encryption and two-way encryption

• symmetric encryption and asymmetric encryption

What is a key in cryptography?

• A key in cryptography is a password used to encrypt and decrypt messages.

• A key in cryptography is a physical device used to secure data.

• A key in cryptography is a type of encryption algorithm.

• A key in cryptography is a piece of information used to control the operation of a cryptographic algorithm.

Explain the concept of public key cryptography.

• Public key cryptography is a method of encrypting data using only one key.

• Public key cryptography is a type of symmetric encryption where the key is kept secret.

• Public key cryptography uses the same key for both encryption and decryption.

• Public key cryptography is a cryptographic system that uses a pair of keys, a public key and a private key, to encrypt and decrypt data.