# C2SP/wycheproof

Project Wycheproof tests crypto libraries against known attacks.

Repository: https://github.com/C2SP/wycheproof
Canonical: https://ross.abutalabs.com/products/wycheproof
Language: Go
License: Apache-2.0
License Family: permissive
Topics: crypto, cryptography
Last push: 2026-08-18T16:45:49+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 35, longevity 100
- inputs: {"age_days": 3585, "days_push": 15, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3104, forks 335 (observed 2026-08-28T04:07:43.677727+00:00)

## What it is
Project Wycheproof is a collection of JSON test vectors for testing cryptography libraries against known attacks, specification inconsistencies, and implementation bugs. It covers popular algorithms including AES-GCM, ECDSA, RSA, EdDSA, and post-quantum schemes like ML-KEM and ML-DSA.

## Use cases
- test my crypto library against known attacks
- find edge cases in ECDSA signature verification
- check for Bleichenbacher padding oracle vulnerabilities
- validate post-quantum algorithm implementations like ML-KEM
- add cryptographic test vectors to CI
- detect invalid curve attacks in ECDH
- verify AEAD implementations like AES-GCM and ChaCha20-Poly1305

## When to choose
- you are developing or maintaining a cryptography library and want to catch known attack classes
- you want curated, schema-documented test vectors covering 80+ attack cases across many algorithms
- you need to test post-quantum primitives like ML-KEM and ML-DSA

## When to avoid
- you need a runnable test suite rather than raw test vector data to integrate yourself
- you need functional crypto primitives rather than tests for them
- you need fuzzing or dynamic analysis rather than fixed known-answer and attack vectors

## Facets
- artifact type: dataset
- maturity: active
- function: testing, cryptography, security
- domain: security, testing, developer-tools
- platform: cross-platform, cli
- tags: test-vectors, json-test-data, crypto-attacks, ci-integration, post-quantum, cryptography

## Member repositories
- C2SP/wycheproof (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:43.677727+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:46:10.867100+00:00, confidence not recorded.
  - readme: https://github.com/C2SP/wycheproof (fetched 2026-08-28T04:07:43.677727+00:00, sha 3199bf4e91ba)
- Data as of 2026-08-30T08:39:29.467469+00:00.