- 期刊
An Efficient Identity-based Online/Offline Signature Scheme without Key Escrow
摘要
Recently, several identity-based signature schemes with Bilinear Pairing and Map-To-Point (MTP) functions have been introduced. However, identity-based cryptography (IBC) schemes suffer from the serious secure problem due to Key Escrow. In addition, both Bilinear Pairing and MTP function are time-consuming operations, and thus the cryptographic schemes based on these expensive operations have high computational burden. In this paper, we proposed an efficient identity-based online/offline sig- nature scheme without using Bilinear Pairing and MTP function. Especially, the proposed scheme overcomes the key escrow problem, and achieves some good features. Furthermore, the securities of the proposed scheme were proven in the random oracle model with the hardness of elliptic curve discrete logarithm problem (ECDLP).
延伸閱讀
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