Taehoon Kim and Im-Yeong Lee, Soonchunhyang Univ., Republic of Korea

In existing smart vehicles, vehicle owners must secure self-sovereignty for authentication. To this end, Holders in DID (Decentralized Identifier) do not rely on traditional IdM (Identity Management), but control their identity data and authenticate their credentials with Verifiers. However, for the Verifier to authenticate the Holder, there is a situation where additional data other than the VP is required, and this is because the DID based on data access control is transmitted in a general encryption scheme, causing detailed access control problems and inefficiency problems. Study on CP-ABE (Ciphertext Policy Attribute-Based Encryption)-based data access control schemes in the DID is being actively conducted to solve this problem. However, existing schemes on DID-based CP-ABE generate various security threats. This paper proposes a study on DID and CP-ABE-based self-sovereign identity of smart vehicles.

Smart Vehicle, Decentralized Identifier, Self-Sovereign Identity, Ciphertext Policy Attribute-Based Encryption