MAXIMUM LIKELIHOOD BLIND CHANNEL ESTIMATION FOR SPACE-TIME CODING SYSTEMS


Improved certificateless sequential multi-signature scheme

A sequential multi-signature enabled multiple users to jointly sign a document in order.Xu,et Induction Control Module al proposed a provably-secure certificateless sequential multi-signature scheme with constant signature length and pairing computations.However,it was shown that the scheme had a drawback in the verifying algorithm,and then it over

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