PK-hybrid protocols: a new framework for hybrid encryption
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Scott W. Weeks (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
- Advisor
- Stephen Tate
Abstract: This thesis considers cryptographic systems that use public key encryption (PKE) as a building block in a larger system. We call these cryptosystems "PK-hybrid protocols," and develop a framework for describing such protocols that provides a clear way of describing the role of PKE in the PKE-hybrid protocol. By clarifying and generalizing the role of PKE in such protocols, we are able to state and prove a powerful lemma for proving the security of PK-hybrid protocols. We then show how this lemma can be used in a proof of security for the standard technique of hybrid encryption, substantially simplifying earlier proofs by Cramer and Shoup and by Abe, et al. In addressing these protocols we make improvements to a previously published protocol for Generalized Non-Interactive Oblivious Transfer (GNIOT) due to Gunupudi and Tate, and use our new security framework to correct a subtle error in the original security proof provided for GNIOT.
PK-hybrid protocols: a new framework for hybrid encryption
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Created on 12/1/2011
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Additional Information
- Publication
- Thesis
- Language: English
- Date: 2011
- Keywords
- Cryptography, Hybrid Encryption, PK-Hybrid, Public Key Encryption
- Subjects
- Computer security $x Research $z United States
- Public key infrastructure (Computer security)
- Public key cryptography