Certificate or License

Certificate Revocation Lists or Online Mechanisms1

With more and more acceptance of Digital Certificates and Public Key Infrastructures (PKI), the mechanisms to revoke a certificate in a PKI have recently received increasing attention. The revocation mechanisms are commonly classified into Certificate Revocation Lists (CRLs), trusted dictionaries and online mechanisms. The designer of a PKI should select an appropriate revocation method suiting...

International certificate of vaccination or prophylaxis.

Early formation of mRNP: license for export or quality control?

Eukaryotic mRNA is processed by enzymes and packaged with proteins within nuclei to generate functional messenger ribonucleoprotein (mRNP) particles. Processing and packaging factors can interact with mRNA cotranscriptionally to form an early mRNP. Erroneous mRNP formation leads to nuclear retention and degradation of the mRNA. It therefore appears that one function of cotranscriptional mRNP as...

Revisiting data mining: ‘hunting’ with or without a license

The primary objective of this paper is to revisit a number of empirical modeling activities which are often characterized as data mining, in an attempt to distinguish between the problematic and the non-problematic cases. The key for this distinction is provided by the notion of severity proposed by Mayo (1996). It is argued that many unwarranted data mining activities often arise because of in...

Certificate-Based Signature Schemes without Pairings or Random Oracles

In this paper, we propose two new certificate-based signature (CBS) schemes with new features and advantages. The first one is very efficient as it does not require any pairing computation and its security can be proven using Discrete Logarithm assumption in the random oracle model. We also propose another scheme whose security can be proven in the standard model without random oracles. To the ...