# google/keyczar

Easy-to-use crypto toolkit

Repository: https://github.com/google/keyczar
Canonical: https://ross.abutalabs.com/products/keyczar
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2019-05-14T02:29:29+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4197, "days_push": 2669, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1093, forks 139 (observed 2026-08-28T04:03:33.381766+00:00)

## What it is
Keyczar is an easy-to-use open-source cryptographic toolkit originally developed by Google, designed to simplify encryption, signing, and key management for developers. It is officially deprecated, with its developers recommending Google's Tink as the successor.

## Use cases
- encrypt and decrypt application data with a simple API
- sign and verify messages or files
- manage cryptographic keys without manual handling
- add authentication encryption to legacy applications

## When to choose
- maintaining or auditing a legacy codebase that already uses Keyczar

## When to avoid
- starting any new project - it is deprecated and unmaintained
- needing modern cryptographic algorithms or active security patches
- wanting long-term support - use Google Tink instead

## Facets
- artifact type: library
- maturity: abandoned
- function: cryptography, security
- domain: security, developer-tools
- platform: cross-platform, python, jvm, cpp
- tags: deprecated, crypto-toolkit, encryption, key-management

## Member repositories
- google/keyczar (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:33.381766+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 2026-08-30T06:47:50.589173+00:00, confidence not recorded.
  - readme: https://github.com/google/keyczar (fetched 2026-08-28T04:03:33.381766+00:00, sha fa53435ee3a9)
- Data as of 2026-08-30T08:39:29.467469+00:00.