A Study on Hierarchical Delegation of Computation for Cloud Services

2016 Fiscal Year Final Research Report

• Project/Area Number: 26730068
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Information security
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: MATSUDA Takahiro 国立研究開発法人産業技術総合研究所, 情報技術研究部門, 研究員 (60709492)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 暗号技術

Outline of Final Research Achievements

Verifiable delegation of computation is a cryptographic technology in which computation performed by a third party can later be verified. We studied how to make it more efficient and flexible. As our main work, we focused on proxy re-encryption, which is a cryptographic primitive in which the task of changing the destination of ciphertexts (i.e. re-encryption) can be delegated to a third party, and obtained several results on it. In particular, we proposed proxy re-encryption that supports the verifiability of the re-encryption procedure, and one that supports the homomorphic property.

Free Research Field

暗号理論