We analyze the concrete security provided by a signature scheme described in a recent Internet Draft by McGrew and Curcio.

The first use of concrete block paving for improving existing aircraft pavements was made at London Luton Airport UK in October 1981. Initial trials comprised two rectangular panels each 9 m x 2 m constructed on an apron stand directly beneath undercarriage gear positions. Rectangular block paving units 100 mm x 200 mm x 80 mm thick were used as an inlay to replace damaged bituminous overlay ma...

We show that the second iterate H(M) = H(H(M)) of a random oracle H cannot achieve strong security in the sense of indifferentiability from a random oracle. We do so by proving that indifferentiability for H holds only with poor concrete security by providing a lower bound (via an attack) and a matching upper bound (via a proof requiring new techniques) on the complexity of any successful simul...

The concrete security bounds for some blockcipher-based constructions sometimes become worrisome or even vacuous; for example, when a light-weight blockcipher is used, when large amounts of data are processed, or when a large number of connections need to be kept secure. Rotating keys helps, but introduces a “hybrid factor” m equal to the number of keys used. In such instances, analysis in the ...

ANSI X9.24-1:2009 specifies the key check value, which is used to verify the integrity of the blockcipher key. This value is defined as the most significant bits of the ciphertext of the zero block, and is assumed to be publicly known data for verification. ISO/IEC 9797-1:2011 illustrates a total of ten CBC MACs, where one of these MACs, the basic CBC MAC, is widely known to be insecure. In thi...

We show that the second iterate H(M) = H(H(M)) of a random oracle H cannot achieve strong security in the sense of indifferentiability from a random oracle. We do so by proving that indifferentiability for H holds only with poor concrete security by providing a lower bound (via an attack) and a matching upper bound (via a proof requiring new techniques) on the complexity of any successful simul...

This paper presents an experimental study on circular stirrup-confined concrete specimens under uniaxial and monotonic load. The effects of stirrup volume ratio, stirrup yield strength and concrete strength on damage evolution of stirrup-confined concrete were investigated. The experimental results showed that the strength and ductility of concrete are improved by appropriate arrangement of the...

Three dimensioned finite element analysis were conducted on concrete block paving. In order to verify the calculated results, an experimental case study was analyzed. Good agreement was observed between the measured and the calculated results. Based on the finite element analysis results and available failure models, comprehensive design charts were developed for port and industrial pavement wh...