Aptos Improvement Proposal-61 proposed and implemented keyless accounts which are used with Aptos Connect on the Aptos blockchain.
They utilize OpenID Connect (OIDC, Google, Github, Apple) accounts instead of secret keys for security and liveness. The keyless account is bound to both the user’s OIDC account and a managing application, and transactions are authorized using a zero-knowledge proof of knowledge (ZKPoK) of OIDC signatures. The ZKPoK is used to prove that a user has a valid OIDC signature without revealing the signature itself, ensuring that keyless accounts and their associated transactions do not leak any information about the user’s OIDC account.
This is a simplified explanation so please check out Dr. Alin Tomescu’s AIP-61 to learn more about this as well as the Aptos Connect documentation
This presentation by Dr. Tomescu breaks the concept of Aptos Keyless down thoroughly.
