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Cryptographic Issues in Matrix’s Rust Library Vodozemac

some_furry · published 17 February 2026

A record is what was published and who pointed at it. The text of the post is not held here: read it at the source, or at its Wayback capture.

Read the post at soatok.blog Wayback capture
1blogs citing
First cited
20 Feb 2026
Most recent
27 Feb 2026
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Links from this post
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In the post
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Shellsharks
Scroll trīgintā ūnus Read at the source ↗
27 Feb 2026
Shellsharks
Setting off on a self-hosting journey Read at the source ↗
20 Feb 2026

Links from this post

Link
Host
Security Issues in Matrix’s Olm Library Read at the source ↗
soatok.blog
https://news.ycombinator.com/item?id=41249371
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https://web.archive.org/web/20240731062107/https://pawb.social/post/9842375
web.archive.org
On Discord Alternatives Read at the source ↗
soatok.blog
https://github.com/matrix-org/vodozemac
github.com
https://gist.github.com/soatok/024f80b8377de4bf9d0cb2d7e57b1eed
gist.github.com
https://www.schneier.com/essays/archives/2007/01/schneier_full_disclo.html
schneier.com
https://adamcaudill.com/2015/11/19/responsible-disclosure-is-wrong/
adamcaudill.com
https://www.matrix.org/security-disclosure-policy/
matrix.org
Too Many People Don’t Value the Time of Security Researchers Read at the source ↗
soatok.blog
https://github.com/matrix-org/vodozemac/tree/a4807ce7f8e69e0a512bf6c6904b0d589d06b993
github.com
There is no Diffie-Hellman but Elliptic Curve Diffie-Hellman Read at the source ↗
keymaterial.net
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/olm/shared_secret.rs
github.com
https://github.com/dalek-cryptography/x25519-dalek/blob/2ddda07333e5028698d8618428c783264ae38b40/src/x25519.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/sas.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/ecies/mod.rs
github.com
https://moderncrypto.org/mail-archive/curves/2017/000896.html
moderncrypto.org
https://www.rfc-editor.org/rfc/rfc7748.html
rfc-editor.org
https://www.rfc-editor.org/rfc/rfc9180.html
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https://www.alchemistowl.org/pocorgtfo/
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https://ajlovesdinos.bsky.social
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https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/megolm/group_session.rs
github.com
https://www.cryptofails.com/post/70546720222/telegrams-cryptanalysis-contest
cryptofails.com
https://scruffkerfluff.bsky.social
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https://spec.matrix.org/v1.17/olm-megolm/olm/
spec.matrix.org
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/olm/session_config.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/olm/account/mod.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/olm/session/mod.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/olm/session/receiver_chain.rs
github.com
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/cipher/mod.rs
github.com
Understanding HKDF Read at the source ↗
soatok.blog
https://doc.rust-lang.org/reference/attributes/diagnostics.html?highlight=deprecated
doc.rust-lang.org
https://doc.rust-lang.org/cargo/reference/features.html
doc.rust-lang.org
https://github.com/matrix-org/vodozemac/blob/a4807ce7f8e69e0a512bf6c6904b0d589d06b993/src/types/ed25519.rs
github.com
https://github.com/topics/matrix-client
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https://github.com/tulir/gomuks
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https://github.com/tulir/gomuks/blob/a4911282419bee6d3dbe06037f075736a9e67855/go.mod
github.com
https://github.com/mautrix/go/tree/85e0664cb441058513549a6e1e198f073bca9af4/crypto/olm
github.com
https://github.com/gomuks/gomuks/blob/fffd94aee7c9952de368e3917a0f634c045b2b25/go.mod
github.com
https://github.com/mautrix/go/tree/main/crypto/goolm
github.com
https://github.com/niochat/nio
github.com
https://github.com/niochat/nio/blob/96c303e38794dfa229cb5077bd68cd4abeb6f4c7/Nio.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
github.com
https://github.com/matrix-org/matrix-ios-sdk/blob/1c4b3f5c32ed3bcf27d3404c770e000a50417352/Podfile
github.com
https://github.com/ulyssa/iamb
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https://github.com/ulyssa/iamb/blob/497be7f0998d850e123362aa0ac2f8fdb8362066/Cargo.toml
github.com
https://github.com/matrix-org/matrix-rust-sdk/blob/03e1fd78a699712c0c95591c5cfad61b43d113ff/Cargo.toml
github.com
https://github.com/mirukana/mirage
github.com
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github.com
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github.com
https://github.com/nadams/go-matrixcli
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https://github.com/mustang-im/mustang
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github.com
https://github.com/matrix-org/matrix-js-sdk/tree/e74eb4928e748194165b7200afe48e582bdc1fd7?tab=readme-ov-file
github.com
https://github.com/matrix-org/matrix-rust-sdk/blob/e5cf097e32e30326d18091254bfcfa447c6de615/crates/matrix-sdk-crypto/Cargo.toml
github.com
https://github.com/marekvospel/libretrix
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github.com
https://github.com/matrix-org/matrix-js-sdk/blob/develop/package.json
github.com
https://github.com/matrix-org/matrix-rust-sdk-crypto-wasm/blob/3ecc63bb5dcac5638b2b2edde8a1d607213d651f/Cargo.toml
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https://github.com/asozialesnetzwerk/riot
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https://github.com/NotAlexNoyle/Versi/blob/314611d6968a06aa40267d8bf65f5a30e950bbd0/package.json
github.com
https://github.com/matrix-org/matrix-js-sdk/blob/7d45947fb3dc4b0e291e03adac5348ad8eeaf32a/package.json
github.com
https://gitlab.matrix.org/matrix-org/olm/-/blob/6d4b5b07887821a95b144091c8497d09d377f985/src/session.cpp
gitlab.matrix.org
https://github.com/agl/curve25519-donna/blob/f7837adf95a2c2dcc36233cb02a1fb34081c0c4a/curve25519-donna.c
github.com
https://sfw.furaffinity.net/user/marleytanuki/
sfw.furaffinity.net
https://web.archive.org/web/20260211180722/https://www.euractiv.com/news/commission-trials-european-open-source-communications-software/
web.archive.org
https://web.archive.org/web/20260216230956/https://www.matrix.org/security-hall-of-fame/
web.archive.org
https://leastauthority.com/
leastauthority.com
https://leastauthority.com/static/publications/LeastAuthority-Matrix_vodozemac_Final_Audit_Report.pdf
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https://web.archive.org/web/20260216073233/https://element.io/blog/bsi-funds-security-analysis-of-matrix/
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https://web.archive.org/web/20260217002113/https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/TechGuidelines/TG02102/BSI-TR-02102-2.pdf?__blob=publicationFile&v=10
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https://sfw.furaffinity.net/user/valery91thunder/
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