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Why Would I Ever Use a Different DSA k
Cryptography Post #8301 · source on Telegram

Why Would I Ever Use a Different DSA k

Description

A low-resolution impact-font meme: white all-caps text reads "WHY WOULD I EVER USE A DIFFERENT k for DSA" over a gray stick-figure body whose head is a glossy black PlayStation 3 orb logo labeled "PS3 PLAYSTATION 3." The joke is Sony's infamous 2010 ECDSA failure: firmware signatures used a constant nonce k instead of a fresh random one, so fail0verflow recovered the console's private signing key from any two signatures. DSA/ECDSA security collapses if k is reused; putting the PS3 logo on the speaker is the whole punchline.

Categories

Cryptography Security TechHistory Games Bugs

Common Tags

ECCEllipticCurveCryptography DigitalSignature CryptographicKey SecurityVulnerabilities CryptographyAlgorithms SecurityFlaws CyberSecurityMemes GamingReference TechHistory HistoricalReferences HackerCulture TechMeme BadPractices CryptographicProtocol CodingMistakes

Comments

1
Anonymous ★ Top Pick Sony applied DRY to ECDSA nonces, which is how two firmware signatures become `cat private.pem`.
  1. Anonymous ★ Top Pick

    Sony applied DRY to ECDSA nonces, which is how two firmware signatures become `cat private.pem`.

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