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Authenticated encryption scheme with (t, n) shared verification

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2 Author(s)
Hsu, C.L. ; Dept. of Inf. Manage., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan ; Wu, T.-C.

A new authenticated encryption scheme with (t, n) shared verification based on discrete logarithms is proposed. In the scheme any ciphertext of signature for a message is addressed to a specified group of verifiers in such a way that the ability to decrypt the ciphertext of signature is regulated by the adopted (t, n) threshold scheme. That is, any t out of n verifiers in the group share the responsibility (or authority) for message recovery. The proposed scheme preserves the merits inherent in the signature scheme with message recovery and the (t, n) shared verification scheme. As compared to Harn's (t, n) shared verification scheme and its further modifications. The proposed scheme has the following advantages: it requires smaller bandwidth and achieves more secrecy of data transmission: it is more efficient for signature verification

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Computers and Digital Techniques, IEE Proceedings -  (Volume:145 ,  Issue: 2 )