Latex is a language for high quality editing documents, especially oriented to book composition, scientific and technical documents, that include formulas and high quality images. It consists on a set of Tex macros (one low-level language) and has become almost a standard for scientific publications in areas such as mathematics, physics and engineering, since we can have finer control over any typographical appearance of the document.

It is clear that so far, none of the attacks carried out against full-AES has been successful, these attacks usually focus on reducing rounds. Many authors claim that none of the following types of attacks have been more effective than an exhaustive-key search:

• Linear cryptanalysis
• Differential Cryptanalysis
• Truncated diferencials
• Interpolation attacks
• Square attack

However, the ordered structure and the deep mathematical basis that AES uses, make it an object of study for new attacks proposals such as algebraic attacks. These attacks consist on propose an equation system, and with the unknowns of the system, it can deduce the key; one of the advantages of this type of attack, is the small number of known texts needed.

QoS managing

An important point with regard to providing QoS is to reduce signaling and interference. With this, operators can properly manage resources without such problems, in order to improve the services provided to users.

In this new scenario, the traffic generated from the UE to the eNodeB is deflected by an IP network before reaching the mobile network. The transmission of a information packet over an IP network is susceptible to delays, so the femto-cell may experience problems for obtaining an immune base time to jitter. Operators should ensure the concept of QoS in femto-cells, the parameters of these scenarios should be comparable to those offered by the macro-cells.