Many cryptographic schemes based on the bilinear pairings, namely the Weil pairing and the Tate pairing, were proposed recently. In this paper, we show that from these pairing-based cryptographic primitives, signature-masked authentication schemes can be developed. In such a scheme, a legitimate user obtains a signature from a Certificate Authority, and in order to get services from a service p...

We consider the origin of anomalous Hall effect in a general model clean two-band chiral superconductor. Within Kubo formalism we derive an analytic expression for high-frequency ac conductivity valid close to critical temperature. This involves two distinct gauge-invariant time-reversal-odd bilinear (TROB) functions involving pairing potential and its Hermitian conjugate. argue that existence ...

Proxy blind Signature allows an original signer to delegate his/her signing capability to a proxy signer who performs message signing blindly on behalf of original signer but he cannot make any link between the blind signature and the identity of the message's owner. Using bilinear pairings, so many ID-based proxy blind signature (IDPBS) schemes have been proposed. But the computation cost of a...

The paper introduces cycles cross ratio, which extends the classic ratio of four points to various settings: conformal geometry, Lie spheres etc. Just like its counterpart is a measure anharmonicity between with respect inversion. It also provides M\"obius invariant distance spheres. Many further properties awaiting their exploration. In abstract framework new can be considered in any projectiv...

Certificateless public key cryptography (CL-PKC), does not require the use of the certificate to guarantee the authenticity of public keys. It does rely upon the use of a trusted third party (TTP), who is in possession of a master key. CL-PKC does not suffer from the key escrow property. Thus, CL-PKC can be seen as a model for the use in public key cryptography. In this paper, we proposed a new...

We use an extension of Gordon-Litherland pairing to thickened surfaces give a topological characterization alternating links in surfaces. If $\Sigma$ is closed oriented surface and $F$ compact unoriented $\Sigma \times I$, then the defines symmetric bilinear on first homology $F$. A I$ called definite if its form. prove that non-split link $L$ only it bounds two opposite sign.

An accumulator based on bilinear pairings was proposed at CT-RSA’05. In this paper, we first demonstrate that the security model proposed by Lan Nguyen does lead to a cryptographic accumulator which is not collision resistant. Second we show that we can provide collision-resistance by updating the adversary model appropriately. Finally, we propose an improvement on Nguyen’s identity escrow sche...