Arqit
A firm selling symmetric key agreement and post-quantum migration tooling, in its own description.
Why this is listed
Its three published lines are all quantum security products, which is what this category tests, separately from how the scheme underneath them relates to the published standards.
- Scheme of its own
- The offering includes a cryptographic scheme the firm developed itself rather than one published as a standard. This is a statement about what is being sold, not about whether it works.
Recorded from this subject’s own site, listed under Sources below.
Arqit describes its business as enterprise-grade quantum security solutions that safeguard data against future quantum threats. It lists three lines: a post-quantum migration product it calls Encryption Intelligence, a key sovereignty platform built on symmetric key agreement with edge and central controllers, and NetworkSecure.
Its approach page sets out what it calls the SKA process, covering provisioning, authentication and key agreement, and states that its use of post-quantum algorithms is limited to initial provisioning, with customers able to opt for symmetric-only provisioning instead. That is the sentence the label on this page rests on, and it is worth reading in full at the source. Its own site does not state a founding date, so neither does this entry.
Sources
Checked against these sources on Sep 4, 2026. Listing is not endorsement, and nothing here is ranked or scored.