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In this paper, all cyclic codes with length p s n, (n prime to p) over the ring R=F p +uF p +⋯+u k−1 F p are classified. It is first proved that Tor j (C) is an ideal of S¯=Fpm[ω]/〈ωps-1〉, so that the structure of ideals over extension ring Suk(m,ω)=GR(uk,m)[ω]/〈ωps-1〉 is determined. Then, an isomorphism between R[X]/〈X N −1〉 and a direct sum...
Sequential aggregate signature (SAS) schemes allow multiple signers to sequentially produce a short signature of different messages and also allow signers to attest to these messages as well as the order in which they signed. Identity-based signature (IBS) schemes allow a signer to sign a message, in which the signature can be verified by his identity. At CCS 2007, Boldyreva et al. proposed an identity-based...
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