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2016•Unpublished venueRequires access

On the TYS Signature Scheme

Marc Jóye, Hung-Mei Lin

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Abstract

Abstract. This paper analyzes the security of a very efficient signature scheme proposed by C.H. Tan, X. Yi and C.K. Siew: the TYS signature scheme. We show that this scheme is universally forgeable; more specif-ically, we show that anyone is able to produce a valid TYS signature on a chosen message from an arbitrary valid message/signature pair. We also suggest modifications to the TYS signature scheme and relate the resulting scheme to the Camenisch-Lysyanskaya signature scheme.

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What this paper is about

Abstract. This paper analyzes the security of a very efficient signature scheme proposed by C.H. Tan, X. Yi and C.K. Siew: the TYS signature scheme. We show that this scheme is universally forgeable; more specif-ically, we show that anyone is able to produce a valid TYS signature on a chosen message from an arbitrary valid message/signature pair. We also suggest modifications to the TYS signature scheme and relate the resulting scheme to the Camenisch-Lysyanskaya signature scheme.

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Available abstract

Abstract. This paper analyzes the security of a very efficient signature scheme proposed by C.H. Tan, X. Yi and C.K. Siew: the TYS signature scheme. We show that this scheme is universally forgeable; more specif-ically, we show that anyone is able to produce a valid TYS signature on a chosen message from an arbitrary valid message/signature pair. We also suggest modifications to the TYS signature scheme and relate the resulting scheme to the Camenisch-Lysyanskaya signature scheme.

Key concepts: Signature (topology), ElGamal signature scheme, Ring signature, Scheme (mathematics), Merkle signature scheme, Computer science, Blind signature, Schnorr signature

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