7. A set of Set of possible keys for a cipher is called ___________.Select one:a.Keywordsb.key spacec.Passwordd.Ciphertext

Breakdown the Problem

1. Identify the terms related to a cipher and their definitions.
2. Analyze the options given to see which one fits the definition of a "set of possible keys".

Relevant Concepts

• Cipher: A method of transforming text to keep it secure.
• Key: A piece of information used to encode or decode a message.
• Key Space: The total number of possible keys that can be used in a cipher, allowing various combinations for encryption and decryption.

Analysis and Detail

1. Keywords: Often refers to specific words used for algorithms but not a general term for keys.
2. Key Space: Directly refers to the range of possible keys in a cipher.
3. Password: A secret word or phrase for access, not directly tied to cipher keys.
4. Ciphertext: The encrypted output of a cipher, not related to the set of keys.

Verify and Summarize

By reviewing the definitions, it is clear that "key space" relates specifically to the possible keys used in encryption.

Final Answer

b. key space