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Hash values Private keys Public keys : Cryptographic algorithm

Private keys

Chosen plain text Known plain text Brute force Chosen ciphertext

Known plain text

Rubber hose attack Brute force attack Trickery attack

Rubber hose attack

Bob encrypts a message using a key and sends it to Alice. Alice decrypts the message using the same key. Which of the following types of encryption keys is being used?

Symmetric

plain text ciphertext steganography encryption algorithm

ciphertext

They are platform-independent. They can be performed in a distributed parallel processing environment. They are fast. They test every possible valid combination.

They test every possible valid combination.

Does not work well for bulk encryption of less sensitive data. Uses only one key to encrypt and decrypt data. Uses only one algorithm type. Does not require the exchange of the shared secret key.

Uses only one key to encrypt and decrypt data.