cryfs/cryfs

Health v2 · maintenance only

Adoption not part of the score

2301 stars · 169 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

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

application · maturity experimental

cryptography file-system security cli security privacy files cloud-computing cli fuse-filesystem encryption cloud-storage dropbox rust-rewrite cryptography linux

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markdown · JSON · MCP: product_card(name="cryfs/cryfs")