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Efficient identity based proxy signature.
Pages: 98-100
Year: Issue:  14
Journal: Computer Engineering and Applications

Keyword:  identity-based cryptographyproxy signaturebilinear pairingsrandom oracle model;
Abstract: In identity based cryptosystem, the user’s public key is bonded to user’s personal information, so it doesn’t need public key certificate, and improves the management efficiency. In the proxy signature, original signer’s signature right is trans-ferred to proxy signer, thus theirself liberated from“trival”signature affairs. It proposes a new identity based proxy signature scheme and proves its security under the random oracle model. In the scheme, it needs 1 pairing in delegation of proxy right, 2 pairings in verification of proxy signature. Compared with the previous schemes, the efficiency is significantly improved.
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