Abstract
In 2012, Tseng and Tsai presented a novel revocable ID (identity)-based public key setting that provides an efficient revocation mechanism with a public channel to revoke misbehaving or compromised users from public key systems. Subsequently, based on Tseng and Tsai’s revocable ID-based public key setting, Tsai et al. proposed a new revocable ID-based signature (RIBS) scheme in the standard model (without random oracles). However, their RIBS scheme possesses only existential unforgeability under adaptive chosen-message attacks. In the article, we propose the first strongly secure RIBS scheme without random oracles under the computational Diffie-Hellman and collision resistant assumptions. Comparisons with previously proposed schemes are made to demonstrate the advantages of our scheme in terms of revocable functionality and security property. DOI: http://dx.doi.org/10.5755/j01.itc.43.3.5718
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