Identity encryption is a cryptographic method where a public key is derived directly from a user’s unique identity string, such as an email address or username. This approach removes the need for a separate public key infrastructure or certificate authority for key distribution. It simplifies key management by allowing anyone to encrypt messages using a known identity. The corresponding private key is generated by a Private Key Generator PKG, which holds a master secret.
Context
Discussions around identity encryption appear in news concerning user privacy and simplified cryptographic operations within digital asset platforms. It offers potential advantages for decentralized identity solutions and secure messaging within blockchain ecosystems by streamlining key distribution. Debates often center on the security implications of relying on a central PKG and the trade-offs between convenience and potential trust assumptions.
This research introduces a blockchain-smart contract system using identity-based broadcast encryption to enable private, verifiable cloud data deduplication and auditing, removing central trust.
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