Identity-based key-insulated proxy signature without random oracles |
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Authors: | Jian-hong Chen Yu Long Ke-fei Chen Yong-tao Wang |
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Institution: | Department of Computer Science and Engineering, Shanghai Jiaotong University;School of Computer Engineering, Huaiyin Institute of Technology;Shanghai Key Laboratory of Scalable Computing and System, Shanghai Jiaotong University; |
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Abstract: | In an identity based proxy signature (IBPS) scheme, a designated proxy signer can generate the signature on behalf of an original
signer. Traditional IBPS schemes normally rely on the assumption that private keys are kept perfectly secure. However, due
to viruses, worms or other break-ins allowed by operating-system holes, key exposure seems inevitable. To minimize the damage
caused by key exposure in IBPS, we propose an identity-based key-insulated proxy signature (IBKIPS) scheme in the standard
model, i.e. without random oracles. |
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Keywords: | |
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