Cryptology ePrint Archive: Report 2007/382

Oblivious Transfer via McEliece's PKC and Permuted Kernels

K. Kobara and K. Morozov and R. Overbeck

Abstract: We present two efficient protocols for two flavors of oblivious transfer (OT): the Rabin and 1-out-of-2 OT using the McEliece cryptosystem and Shamir's zero-knowledge identification scheme based on permuted kernels. This is a step towards diversifying computational assumptions on which OT -- the primitive of central importance -- can be based.

Although we obtain a weak version of Rabin OT (where the malicious receiver may decrease his erasure probability), it can nevertheless be reduced to secure 1-out-of-2 OT.

Elaborating on the first protocol, we provide a practical construction for 1-out-of-2 OT.

Category / Keywords: cryptographic protocols / Oblivious transfer, coding-based cryptography, McEliece cryptosystem, permuted kernel problem.

Date: received 26 Sep 2007, last revised 30 Jun 2008

Contact author: overbeck at cdc informatik tu-darmstadt de, kirill morozov@aist go jp

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Version: 20080630:081138 (All versions of this report)

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