Web23 de abr. de 2013 · The (identity-based and hierarchical identity-based) signature schemes described here are the most efficient currently known schemes based on the co-CDH problem in the standard model. On the other hand, the constructions presented here might not be particularly suitable for HIBEs of higher depth. Web20 de set. de 2024 · The HierarchyID is based on a "Hierarchical Path" type of hierarchical structure. It has some good features but doesn't lend itself well to DRI and …
Strongly Unforgeable Signatures and Hierarchical Identity-Based ...
Web25 de mai. de 2010 · This work provides the first treeless signature scheme that supports strong unforgeability for the post-quantum era in the standard model and shows how to directly implement identity- based, and even hierarchical identity-based, signatures (IBS) in the same strong security model without random oracles. We propose a variant of the … Web22 de abr. de 2024 · Abstract: Revocable hierarchical identity-based encryption (RHIBE) is an extension of HIBE that provides the efficient key revocation function by broadcasting an update key per each time period. Many RHIBE schemes have been proposed by combining an HIBE scheme and a tree-based revocation method, but a generic method … dwr 956m firmware
New Hierarchical Identity Based Encryption with Maximum …
Webidentity values at the time that it asks the challenge query. Selective-identity chosen-plaintext attacks In this model, the adversary has to choose the challenge identity values before seeing the public key. Michel Abdalla (ENS & CNRS) Hierarchical identity-based encryption 7 / 31 WebHierarchical Identity-Based Encryption HIBE is a generalisation of Identity-Based Encryption IBE which mirrors an organisational hierarchy. However, when the user decrypts a ciphertext encrypted to a hierarchical identity, he/she should know the exact ... Web22 de jul. de 2015 · The lack of security measures in ADS-B systems makes it susceptible to different attacks. Among the various security issues, we investigate the integrity and authenticity of ADS-B messages. We propose a new framework for providing ADS-B with authentication based on three-level hierarchical identity-based signature (HIBS) with … crystalline vs clastic