Encrypted messaging for firms that hold other people’s confidences.

About

About MELKEM

MELKEM INC. is a Canadian software company in Ontario building private, encrypted software. MELKEM Authenticator, our free iPhone app, makes your two-factor codes on your device. It collects no personal data and makes no network connections, and its App Store privacy label is Data Not Collected. Our messaging service is in development and is not yet publicly available. We build privacy you can check, not just trust.

I How it is built

Established cryptography, operated in Canada

• The Signal Protocol, implemented with libsignal — the open-source library published by the Signal Foundation. We design no cryptography of our own.
• Post-quantum key agreement, designed so that traffic recorded today stays unreadable later, even to an adversary with a quantum computer.
• Accounts belong to the organization rather than to an employee’s personal telephone number. Access is issued and withdrawn at the organization’s instruction.
• Infrastructure operated by us in Canada, under Canadian law.

II What the service can see

Designed so that very little exists to disclose

For a message awaiting delivery, our infrastructure holds the destination device, the hour in which it arrived, an expiry time, and a block of bytes we cannot open. There is no sender field. Once the message is delivered, the record is deleted.

Stored messages are padded to a fixed 4 KB block, so an observer sees how many blocks, never the length. An ordinary text message occupies a single block.

See for yourself

Privacy you can check, not just trust.

MELKEM Authenticator is available now for iPhone. Here’s how you can check what we say about it.

Try the demonstration: watch a 2FA code being made.

Sample data: a public demo key, never yours.

Choose a claim