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  https://github.com/xero/leviathan-crypto v3 new new: AES-GCM-SIV, MerkleLogs, cSHAKE, KMAC, BLAKE3, streaming SHA-3 variants, & new 22 signature suites across 6 families (pure,prehash, & Ed25519ph modes): ML-DSA, SLH-DSA, Ed25519, ECDSA-P256, classical+PQ hybrids, & PQ-only composites.

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  https://github.com/xero/covcom looking for an open source, self hosted, signal style messenger alternative? checkout out #COVCOM, the covert communications group messenger, with both web-based and cli clients. #XChaCha20 #MLKEM768 #Ed25519 #BLAKE3 #SPQR #E2EE #Ephemeral #N_party #chat

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  https://plan.cat/~xero

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  https://leviathan.3xi.club/jwt ever curious about the size impact of algorithm choice? esp when quantum-resistant algos join the mix? explore EdDSA, ES256, ML-DSA, SLH-DSA-SHAKE, SLH-DSA-SHAKE, MLDSA44-SLHDSA classical and post-quantum JWT signatures in this interactive demo #crypto #cryptography #jwt #tokens

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  https://leviathan.3xi.club/tamper ever wanna try and hack an e2ee encrypted chat protocol? here's your chance! the leviathan-crypto tamper demo is designed for interactive fun. the client shows defended forgery, replay, and other attacks. https://github.com/xero/leviathan-demos/tree/main/tamper #hacking #ctf (kinda)

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  leviathan.3xi.club/kyber curious to see what the internals of a post-quantum cryptographic key exchange and it's usage? generate a key, watch the {en,de}capsulation, independent key derivation, then inspect the message digest verifications in this interactive demo #crypto

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  https://github.com/xero/covcom/releases/tag/v3.1.0 COVCOM v3.1.0 is out! static bins (mad platforms and architectures), self hosted, web & cli clients, multi-user, zero auth, signed message logs, armored text/qr code invites codes, and lots more! #postquantum #crypto #chat #spqr #covcom #opensource

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  watch the pa commercial street bridge demolition live between 1-9pm est. both live video and auto-refreshing mjpg screenshot feeds available https://w3b.cam/event/i376-demolition #camhunting #webcams #pgh #demolition #live

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  i made a free #android app (no tracking, networking, or ads) for sleepy drivers. but i need _12 testers_ before i can publish to the store. if you have an android phone and can test, please join my google group, then follow the playstore links in the post 💚 https://groups.google.com/g/vibrate-awake-testing/

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  https://github.com/xero/vibrateawake/releases/tag/v1.2 download `vibrate awake` v1.2 APKs for #android and #wearos sideloading! simple, offline app that buzzes your phone (& watch) on an interval to help you stay alert on long drives or night shifts. open source & ad free!

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  https://youtu.be/xOgDuytuwt0 out in the woods vlogging about mental health, relaxing, and object grounding. also my first impressions of the 01edc maze pendant.

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  crypto library hype post must read like total nerd word salad to normies

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  powered by https://github.com/xero/leviathan-crypto

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  what good is a cli tool w/o an ascii art animation? esp when encrypting gigs of "backups" ;D

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  v1 (and 2 stream ciphers) were not fast enough. so let's use worker pools! serpent-256 x4 faster! and pooling XChaCha20-Poly1305 makes the tool ridiculous. testing on a 1.3gb file, 2.4sec encrypt or decrypt. wasm is so hype! #crypto #wasm #typescript #asciiart #teminal

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  shoutout to bunjs! these single-file executable bins are so hype! watch me install my new crypto lib and build the cli tool in under 0.1s, then watch my demo tool use XChaCha20Poly1305 to encrypt and decrypt a 1gb file in 2s ;D typescript and wasm in the shell? yes indeed. https://github.com/xero/leviathan-crypto

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  https://leviathan.3xi.club made a little demo site for my crypto lib. web file encryption, chat, and cli tools

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  what? you dont put gifs in your prs?

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  i think these public attestation signing are cool for published artifacts. does anyone else? https://search.sigstore.dev/?logIndex=1187915865 created from this release https://github.com/xero/leviathan-crypto/releases/tag/v1.1.0

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  https://github.com/xero/leviathan-crypto/ leviathan-crypto v1.4.0 XChaCha20Seal: bind key, call encrypt(), done! fresh nonce every call w/ no management needed. XChaCha20StreamSealer: chunked AEAD for large payloads w/ per-chunk nonces and position binding. bun i leviathan-crypto (on npm you pleb)

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  https://github.com/xero/claudecode-hook-n-switch VULN DISCLOSURE: Claude Code's HTTP hook system lets a malicious repo silently rewrite your shell commands before execution. The UI displays the original command. The rewritten one runs with no indication anything changed. full prompt interception, complete tool output exfil (env vars, file contents, paths, etc), and loopback SSRF to any localhost service. Disclosed to Anthropic via H1. Closed as wontfix. their position is that trusting a...

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  https://leviathan.3xi.club/kyber post-quantum cryptography demo simulating a complete ML-KEM (kyber) key encapsulation ceremony between two browser-side clients. Each wire frame is expandable, revealing the raw nonce, ciphertext, Poly1305 tag, and AAD. sauce: https://github.com/xero/leviathan-demos/tree/main/kyber

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  https://github.com/xero/covcom Covert communications for private group conversations. Share an invite, talk, close the tab, and it's gone. End-to-end encrypted with post-quantum cryptography, so the messages stay private today and unreadable to the computers coming tomorrow.

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  https://github.com/xero/leviathan-crypto/releases/tag/v2.1.0 leviathan-crypto presents post-quantum ratchet primitives! ratchetInit, KDFChain, kemRatchetEncap/Decap, SkippedKeyStore, & RatchetKeypair are now available for all your sparse post quantum ratchet needs. tools to build your own signal-esque apps! #crypto #cryptography #ratchet #spqr

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