PAGES is block cipher family based on the design of Speck, see [1]. However, some intriguing design details of Speck were not used in the design of PAGES. PAGES has block size of 256 bit and comes in three version: PAGES-512, PAGES-768, and PAGES-1024, were the number denotes the key length. The number of rounds is 64, 96, or 128, respectively. PAGES uses variables of 128 bit, that is half the ...

We propose a novel methodology to design Block Cipher functions. This methodology is illustrated with the design of a specific block cipher function Maya. Our design philosophy is to derive the SBoxes themselves from the secret key. This makes breaking any round function equivalent to guessing all the key-bits. Advantages of our design include much larger key sizes in relation to the block size...

The new generation video coding standard H.264/AVC has been developed to achieve higher coding efficiency than previous video coding standards. Its variable block size motion compensation requires huge computation, which is a big problem for real time application. To reduce the complexity, we propose a fast inter mode decision algorithm with early mode prediction rules and early block size clas...

Explicit clustering in a statistical indoor propagation model is found to have significant effects on the capacity of an array-to-array link or matrix channel. Effects of antenna spacing, Poisson homogeneity, block size, and transmit power allocation strategies are also considered.

Let (W, C) be an m-cycle system of order n and let Ω ⊂ W , |Ω| = v < n. We say that a handcuffed design (Ω,P) of order v and block size s (2 ≤ s ≤ m−1) is contained in (W, C) if for every p ∈ P there is an m-cycle c = (a1, a2, . . . , am) ∈ C such that: (1) p = [ak, ak+1, . . . , ak+s−1] for some k ∈ {1, 2, . . . ,m} (i.e. the (s− 1)-path p occurs in the m-cycle c); and (2) ak−1, ak+s ∈ Ω. Note...

If the blocks of a G DD(X,G,A) with block size 4, index 3 and type gu can be arranged into a (gu)/4 × (gu) array, such that: (1) the main diagonal consists of u empty subarrays of size g/4× g; (2) the blocks in each column form a partition of X\G for some G ∈ G, while the blocks in each row contains every element of X\G 3 times and no element of G for some G ∈ G, then the design is called a fra...

A regular graph design RGD(v; k; r) is a design on v points with blocks of size k and constant replication number r, such that any two points belong to either 1 or 1 +1 common blocks, for some constant 1. We investigate resolvable regular graph designs with block size 4. In particular we determine the spectrum of such designs for v 16.

A four-component reaction kinetics for the densities of mobile and non-excess sessile dislocations and of mobile and immobile disclinations is proposed to describe the mi-crostructure development under plastic deformation up to large strains. The densities of non-excess sessile dislocations and of immobile disclinations are connected to ow stress contributions. For the dislocation contribution,...