Proton Cryptography Rust

Utility crates for cryptographic operations at Proton. Not intended or vetted for general usage outside Proton.

Crates

• proton-crypto: Core Proton cryptography library: generic Proton-specific OpenPGP and SRP API. Backends: GopenPGP (gopgp) or pure Rust (rustpgp via proton-rpgp).
• proton-crypto-account: Proton account cryptography (user keys, address keys, etc.) and key management; re-exports proton-crypto.
• proton-rpgp: Pure Rust OpenPGP wrapper on top of rpgp (used as optional backend in proton-crypto).
• gopenpgp-sys: Rust bindings to GopenPGP.
• proton-srp: Pure Rust implementation of Proton’s Secure Remote Password (SRP) protocol.
• proton-crypto-subtle: Low-level primitives: AEAD, HKDF.
• proton-device-verification: Device verification for clients.

Build

cargo build

The default proton-crypto backend is GopenPGP (gopgp), which requires Go to build gopenpgp-sys. For a pure Rust build, use:

cargo build --no-default-features -p proton-crypto -p proton-crypto-account --features rustpgp

Contributions

We are not currently accepting external contributions via this GitHub repository. This open-source mirror is provided for transparency and reference.

License

MIT. See LICENSE.

Security

To report a vulnerability, see SECURITY.md.