Lattice Puncturable Attribute Based Proxy Re-encryption Scheme and Its Application in Information Centric Network

This work presents the first attempt to build a feasible puncturable attribute-based proxy encryption from the lattice. Our system provides flexible and fine-grained access control. In this scheme, the private keys are punctured, allowing the decryption abilities to be revoked for specific messages or receivers and securing sensitive content even if the users’ present keys are compromised. As opposed to the traditional encryption scheme, the proposed technique has the advantage of allowing users to update their keys without requiring key re-issuance from the key generator. Also, it does not necessitate regular communication between the user and the key generation authority, nor does it necessitate deleting elements to remove current keys to generate fresh keys. We developed a new approach for embedding attribute-based keys and punctured keys. This was done in such a way that the secret key size is nearly the same as that of the original attribute-based encryption without a punctured key. Also, we demonstrate that our scheme is secure against a selected plaintext attack in the selective security model under the Learning With Errors (LWE) assumptions. Finally, we implemented our scheme and integrated it with ICN. The implantation results show that our scheme is practical.