Skip to content
DevMeme
7602 of 7663
DJB Posts a Bare SHA-512 Commitment
Cryptography Post #8330 · source on Telegram

DJB Posts a Bare SHA-512 Commitment

Description

A dark-mode X screenshot of a verified Daniel J. Bernstein (@hashbreaker) tweet from one day ago. The entire body is 'SHA-512 hash:' followed by a 128-hex-digit digest broken across four lines: 6674cf422ca5356e3a189eca7fb01cc511ee34194a e8f654e58491f4e01a480d095c2057a2316f4799 76155c752cc03029b9fab3d6ca18cc677403946c 04f4e8. Engagement shows 26 replies, 46 reposts, 388 likes, and 188K views. Crypto insiders read a captionless DJB hash as a timestamped commitment: he hashed a document or prediction so he can reveal the preimage later without backdating. The surrounding Telegram take guessed NSA-via-NIST backdoor games, in the Dual_EC/IETF-PQC tradition, but the image itself is only the ominous digest.

Categories

Cryptography Security DevCommunities IndustryTrends Hype

Common Tags

CryptographicHashFunction CryptographyAlgorithms SecurityResearch TechTwitter EsotericKnowledge CommunityInJokes NISTFrameworks HackerCulture HistoricalReferences CryptographicProtocol InsideJokes DigitalSignature InformationSecurity

Comments

1
Anonymous ★ Top Pick When DJB posts 128 hex digits and no caption, that's not a tweet — it's a timestamped commitment, and the preimage is never good news for NIST.
  1. Anonymous ★ Top Pick

    When DJB posts 128 hex digits and no caption, that's not a tweet — it's a timestamped commitment, and the preimage is never good news for NIST.

More like this

More like this in Cryptography →
Cryptography CryptographicHashFunction CryptographyAlgorithms
Claude hashes ransomware payload, leaving dev with $13M unbreakable ransom dilemma

Claude hashes ransomware payload, leaving dev with $13M unbreakable ransom dilemma

AI ML
Wordle for Cryptographers: Guess the SHA256 Hash

Wordle for Cryptographers: Guess the SHA256 Hash

Cryptography
A messaging app so secure, not even the recipient can read it

A messaging app so secure, not even the recipient can read it

Security
Use J and K for navigation