Identity-based key-insulated proxy signature
Identity-based key-insulated proxy signature
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DOI:
10.1007/s11767-008-0128-2
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发表时间:
2009-11
期刊:
影响因子:
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通讯作者:
Zhongmei Wan;Xuejia Lai;J. Weng;Shengli Liu;Xuan Hong
中科院分区:
文献类型:
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作者:
Zhongmei Wan;Xuejia Lai;J. Weng;Shengli Liu;Xuan Hong
In proxy signature schemes, the proxy signer B is permitted to produce a signature on behalf of the original signer A. However, exposure of proxy signing keys can be the most devastating attack on a proxy signature scheme since any adversary can sign messages on behalf of the proxy signer. In this paper, we applied Dodis,et al.’s key-insulation mechanism and proposed an Identity-Based (ID-based) Key-Insulated Proxy Signature (IBKIPS) scheme with secure key-updates. The proposed scheme is strong key-insulated and perfectly key-insulated. Our scheme also supports unbounded period numbers and random-access key-updates.