# cryfs/cryfs

Cryptographic filesystem for the cloud

Repository: https://github.com/cryfs/cryfs
Canonical: https://ross.abutalabs.com/products/cryfs
Homepage: https://www.cryfs.org
Language: Rust
License: LGPL-3.0
License Family: copyleft
Topics: cryfs, osxfuse, filesystem, crypto, cloud, encryption, cloud-storage, cryptography, fuse, fuse-filesystem, dropbox
Last push: 2026-08-12T06:05:40+00:00

## Health v2 (maintenance only)
Score: 85/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 62, longevity 100
- inputs: {"age_days": 4008, "days_push": 21, "days_rel": 255, "gap_med": 15, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2301, forks 169 (observed 2026-08-28T04:06:35.471796+00:00)

## What it is
CryFS is a cryptographic filesystem that encrypts files locally so they can be safely stored in cloud services like Dropbox, iCloud, or OneDrive, hiding file sizes, directory structure, and metadata. The 2.0 branch is a Rust rewrite currently in alpha, compatible with stable CryFS 1.0 filesystems and currently supporting Linux only.

## Use cases
- encrypt files before syncing to dropbox
- hide folder structure and file sizes in cloud storage
- mount an encrypted directory via fuse
- store sensitive data on onedrive or icloud securely
- protect cloud backups with client-side encryption

## When to choose
- you want metadata-hiding encryption for cloud storage, not just per-file encryption
- you need a FUSE-based encrypted filesystem on Linux
- you already use CryFS 1.0 and want to test the Rust rewrite

## When to avoid
- you need production reliability - use stable CryFS 1.0 instead
- you need Windows or macOS support
- you rely on ciphers other than XChaCha20 or AES

## Facets
- artifact type: application
- maturity: experimental
- function: cryptography, file-system, security, cli
- domain: security, privacy, files, cloud-computing
- platform: cli
- tags: fuse-filesystem, encryption, cloud-storage, dropbox, rust-rewrite, cryptography, linux

## Member repositories
- cryfs/cryfs (main) score 85

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:35.471796+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 2026-08-30T02:40:12.228898+00:00, confidence not recorded.
  - readme: https://github.com/cryfs/cryfs (fetched 2026-08-28T04:06:35.471796+00:00, sha 131aee0e8c9c)
  - homepage: https://www.cryfs.org (fetched 2026-08-29T10:20:23.797289+00:00, sha d153c2c76777)
- Data as of 2026-08-30T08:39:29.467469+00:00.