Algorithm

PQRingCT

Family: lattice.

PQRingCT is a ring confidential transaction scheme built on lattice cryptography, used by the Abelian blockchain. It hides who sent a payment among a group of possible senders, hides the amounts, and still lets the network check that no coins were created or spent twice. It combines linkable ring signatures, commitments, and range proofs.

Safety: Medium

Why this rating

Security rests on structured-lattice problems such as Module-SIS and Module-LWE. This is a complex, specialized protocol that combines several lattice components and was analyzed by far fewer researchers than NIST standards. Implementation and parameter errors are likely risks, and the privacy features add further attack surface.

Standard

https://download.abelian.info/release/docs/whitepaper.pdf

Research

• Abelian (ABEL) whitepaper, version 1.0 (2022)
• pqringct reference implementation (Go)

Implemented by

• pqringct
• pqringctx