Cypherrum Releases

Public distribution of Cypherrum — desktop vault encryption with post-quantum mesh sharing.

• Website: https://cypherrum.com
• Downloads: Latest release · All releases
• Release notes: RELEASE-NOTES.md · Full changelog
• User guide: https://cypherrum.com/docs/user-guide
• Discussions / support: GitHub Discussions
• Security disclosure: see SECURITY.md

Verify a download

Each release ships SHA256SUMS-<version> alongside the binaries. Recent releases also include SHA256SUMS + SHA256SUMS.sig (ed25519-signed manifest used by Cypherrum's auto-update).

sha256sum -c SHA256SUMS-<version>

Mesh and the optional relay

Cypherrum's mesh sharing works LAN-only out of the box — devices on the same network discover each other and sync directly.

For cross-network sync (different LANs, mobile networks, traveling between sites), Cypherrum can route through a public relay. Logiqum operates one at relay.cypherrum.com; it is enabled by default and is the path used by invite links and asynchronous shares.

The relay only ever sees end-to-end-encrypted payloads — vault contents, share envelopes, and inbox messages are all encrypted client-side before they leave a device. The relay cannot read them.

License

Proprietary. See cypherrum.com for licensing and terms.