Last Updated：2025/12/06

Dictionary quizzes to help you remember the meaning

Dictionary quizzes to help you remember the meaning

known-plaintext attack

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Source Word

known-plaintext attack

Noun

(cryptography) 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.

Japanese Meaning

既知平文攻撃: 暗号システムに対する攻撃の一種で、攻撃者が暗号文だけでなく、対応する平文（クリブ）も既知であるという情報を利用し、システムの鍵や内部構造を解読しようとする手法。暗号文のみの攻撃より効果的だが、選択平文攻撃ほどの柔軟性はない。

What is this buttons?

The security team detected a known-plaintext attack after finding several ciphertexts paired with their original messages.

Google Translation / DeepL Translation

セキュリティチームは、複数の暗号文と対応する平文が見つかった後、既知平文攻撃を検出した。

Sense（1）

(cryptography) 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.

known-plaintext attacks

（ plural ）

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