known-plaintext attack
Word Rarity
Very rare
Frequency: Zipf frequency 2.31 in modern English
42
Scrabble Score
20
Letters
6
Syllables
12
Unique Chars
Meaning
noun
An attack on a cryptosystem that relies on the attacker's knowledge of not just some ciphertexts encrypted with that system and key, but also their corresponding plaintexts (cribs). More powerful than a ciphertext-only attack, but less powerful than a chosen-plaintext attack.