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Cryspen

High Assurance Software & Tools

74 followers
France
https://www.cryspen.com
@cryspen@ioc.exchange
company/cryspen
@cryspen.com
info@cryspen.com

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README.md

Cryspen

Our mission is to provide services and software for high assurance software in order to establish trust into your critical systems.

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Software & Tools

libcrux - the formally verified crypto library
OpenMLS (Github) - a Rust implementation of MLS
hax - a framework to write formally verifiable Rust (specifications and code)

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bertie bertie Public

Bertie TLS 1.3 Implementation

F* 134 5
libcrux libcrux Public

The formally verified crypto library for Rust

C 239 50
hax hax Public

A Rust verification tool

OCaml 416 59
hpke-rs hpke-rs Public

Pure Rust implementation of HPKE (https://www.rfc-editor.org/rfc/rfc9180.html)

Rust 51 30

Repositories

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Showing 10 of 49 repositories

aeneas Public Forked from AeneasVerif/aeneas
Staging area for PRs to AeneasVerif/aeneas

cryspen/aeneas’s past year of commit activity

OCaml 1 Apache-2.0 78 0 1 Updated Jun 7, 2026
libcrux Public
The formally verified crypto library for Rust

cryspen/libcrux’s past year of commit activity

C 239 Apache-2.0 50 71 15 Updated Jun 6, 2026
rust-core-models Public
Rust models for the Rust core library

cryspen/rust-core-models’s past year of commit activity

Lean 0 1 0 2 Updated Jun 4, 2026
hax Public
A Rust verification tool

cryspen/hax’s past year of commit activity

OCaml 416 Apache-2.0 59 211 (3 issues need help) 17 Updated Jun 4, 2026
libcrux-iot Public
An IoT friendly, formally verified, crypto library based on libcrux

cryspen/libcrux-iot’s past year of commit activity

C 7 AGPL-3.0 4 22 7 Updated Jun 4, 2026
hpke-rs Public
Pure Rust implementation of HPKE (https://www.rfc-editor.org/rfc/rfc9180.html)

cryspen/hpke-rs’s past year of commit activity

Rust 51 30 7 (1 issue needs help) 0 Updated May 27, 2026
SparsePostQuantumRatchet Public Forked from signalapp/SparsePostQuantumRatchet
Provides SPQR, a chunked post-quantum ratchet usable in parallel with DH ratchets for the libsignal protocol.

cryspen/SparsePostQuantumRatchet’s past year of commit activity

F* 1 AGPL-3.0 19 0 3 Updated May 19, 2026
bertie Public
Bertie TLS 1.3 Implementation

cryspen/bertie’s past year of commit activity

F* 134 Apache-2.0 5 26 6 Updated May 18, 2026
advisory-db Public Forked from rustsec/advisory-db
Security advisory database for Rust crates published through crates.io

cryspen/advisory-db’s past year of commit activity

1 492 0 0 Updated May 13, 2026
libcrux-proofs Public Forked from cryspen/libcrux
The formally verified crypto library for Rust

cryspen/libcrux-proofs’s past year of commit activity

C 0 Apache-2.0 51 0 1 Updated May 9, 2026

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