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Data Encryption Standard  (DES) Data Encryption Standard (DES) es un algoritmo de cifrado , es decir, un método para cifrar información, escogido como FIPS en los Estados Unidos en 1976, y cuyo uso se ha propagado ampliamente por todo el mundo. El algoritmo fue controvertido al principio, con algunos elementos de diseño clasificados, una longitud de clave relativamente corta, y las continuas sospechas sobre la existencia de alguna puerta trasera para la National Security Agency (NSA). Posteriormente DES fue sometido a un intenso análisis académico y motivó el concepto moderno del cifrado por bloques y su criptoanálisis. Hoy en día, DES se considera inseguro para muchas aplicaciones. Esto se debe principalmente a que el tamaño de clave de 56 bits es corto; las claves de DES se han roto en menos de 24 horas. Existen también resultados analíticos que demuestran debilidades teóricas en su cifrado , aunque son inviables en la práctica. Se cree que el algoritmo es seguro en la pr...

Encryption or Encryption Standard Data Symmetric cryptography is a cryptographic method which uses the same key to encrypt and decrypt messages. The two communicating parties have to agree in advance on the key to use. Once both have access to this key, the sender encrypts a message using it, send it to the recipient, and the receiver decrypts with it. Security A good cipher puts all the security in the key and nothing in the algorithm. In other words, it should be of no help to an attacker to know the algorithm being used. Only if he obtains the key would knowledge of the algorithm. Encryption algorithms are widely used these properties (for example, GnuPG on GNU). Since all the security is the key, it is important to be very difficult to guess the key. This means that the range of possible keys, ie, the space of possible keys must be broad. Richard Feynman was famous in Los Alamos for its ability to crack safes, to fuel the legend that he had around him, carried around a set ...

Eset Nod32 Antivirus Versión 2.7 - (Updates) January 14, 2010 - ESET Antivirus, ESET NOD32 Antivirus version 2.7 if discontinuous Image Font www.eset.com   Eset's leading computer security Eset, said it will discontinue the sale of the Antivirus Software version 2.7 from 1 February 2010. This leading Antivirus programs and proactive detection of viruses, today announced the gradual removal of the market for version 2.7 of ESET NOD32 Antivirus, consistent with the interests of the company to offer its users the most effective and evolved level protection against the growing threat environment. From 1 February 2010, version 2.7, compatible with Microsoft Windows 95/98/ME/NT, no longer available for sale and your evaluation version will be removed from the ESET website . However, all current users of version 2.7 will receive the traditional service and technical support on the update of virus signature until 1 February 2012, date which shall be to pr...

Criptografía Simétrica y Criptografía Asimétrica La criptografía simétrica es un método criptográfico en el cual se usa una misma clave para cifrar y descifrar mensajes. Las dos partes que se comunican han de ponerse de acuerdo de antemano sobre la clave a usar. Una vez ambas tienen acceso a esta clave, el remitente cifra un mensaje usándola, lo envía al destinatario, y éste lo descifra con la misma. Seguridad Un buen sistema de cifrado o encriptación,  pone toda la seguridad en la clave y ninguna en el algoritmo. En otras palabras, no debería ser de ninguna ayuda para un atacante conocer el algoritmo que se está usando. Sólo si el atacante obtuviera la clave, le serviría conocer el algoritmo. Los algoritmos de cifrado ampliamente utilizados tienen estas propiedades(por ejemplo: GnuPG en sistemas GNU). Dado que toda la seguridad está en la clave, es importante que sea muy difícil adivinar el tipo de clave. Esto quiere decir que el abanico de claves posibles, o sea, ...

VERSIÓN 2.7 DE NOD32 ANTIVIRUS Antivirus Eset, Versión 2.7 NOD32 Se Descontinúa Fuente Imagen: www.eset.com   14 de Enero de 2010 - Eset La compañía líder en seguridad informática; Eset, informó que descontinuará la venta de la versión 2.7 del Software Antivirus a partir del 1º de febrero de 2010. Dicha empresa líder de Antivirus y programas en la detección proactiva de virus informáticos, anuncia la progresiva remoción del mercado de la versión 2.7 de ESET NOD32 Antivirus , en consonancia con el interés de la empresa de ofrecer a sus usuarios el más eficaz y evolucionado nivel de protección contra el creciente entorno de amenazas.  A partir del 1º de febrero de 2010, la versión 2.7, compatible con Microsoft Windows 95/98/ME/NT, dejará de estar disponible para la venta y su versión de evaluación será retirada de los sitios web de ESET . Sin embargo, todos los actuales usuarios de la versión 2.7 recibirán el tradicional servicio de apoyo técnico y las ...

FRENCH ALPHABET COMPOSITION Uses the same basic English alphabet, but many of the letters can carry additional marks, such as E, A and O. In French, these combinations are not considered additional letters. However, in Iceland, accented letters, such as a, i, o and are considered different letters of the alphabet. In Spanish, ñ is considered a separate letter, but the accented vowels like A and E are not. The ll and ch are also considered individual letters, but in 1994 the Royal Spanish Academy of Language has changed the classification for which I is between LK and LM in the dictionary and ch is between CG and CI. SIMILARITIES AND DIFFERENCES OF FRENCH ALPHABET WITH RESPECT TO OTHER ALPHABETS In German, the words that begin with SCH-(which is the German phoneme / ʃ /) are sandwiched between the words with initial SCA-and science (all loans by the way) instead of this group of charts that follow the letter s, as if it were a single letter - a policy that would lexicographica...

IN THE WORLD The term "alphabet" is used by linguists and paleographers in general. In the broadest sense, the alphabet, alphabet or ABC, is a script that is segmented by phonemes and thus produce independent glyphs paragraph with individual sounds. In the strictest sense, some scholars distinguish what they regard as a true alphabet abc abecedaro or, in other two types of scripts and abugidas abjads segmented. These three differ in the way they treat vowels as well: peer abjads have letters, consonants and vowels leave the highest court of the unspoken. Abugidas also consistent occurs against, but vowels are indicated with diacritics or a systematic change graphics and consonants. In some scripts, or abc alphabet, consonants and vowels are written as single letters. The first known alphabet, here is the alphabet, alphabet, abc or Wadi el-Hol script. The Abjad, is through its successor Phoenician ancestor of modern alphabets, including Arabic alphabet, the Greek ...

ASIAN LOGOGRAPHY Beyond China logography or writing many scripts, alphabets or abc Asians are more phonetic. The alphabet, abc alphabet or Arabic, the alphabet, Hebrew alphabet or abc, alphabet, abc alphabet or Syriac, and other Middle Eastern abjads are the evolution of the alphabet, abc alphabet or Aramaic. Most alphabetic scripts in India and East Asia are descendants of the Brahmi script, which often is thought to be a descendant of the alphabet, abc alphabet or Aramaic. In Korea, the alphabet, abc alphabet or Hangul, was created by Sejong the Great in 1443. The understanding of the phonetic alphabet in Mongolia, the alphabet, ABC or abc Phagspa helped the creation of a phonetic writing suitable for the Korean language spoken. In Mongolia the alphabet, ABC or abc Phagspa was in turn derived from the Brahmi script. Hangul is a unique alphabet in a variety of ways: It is a featural script, where many of the cards have been designed from the sound of a place of articulation (P t...

WRITINGS AND SCRIPTS HISTORY The history of the alphabet, alphabets or abc began in ancient Egypt. Around 2700 BC, Egyptian writing in that time there was a group of some 24 hieroglyphs uniliterales are called to represent syllables that begin with a single consonant of their language, and a vocal (or vocal) to be supplied by the native speaker. These glyphs were used as pronunciation guides logograms, to write grammatical inflections, and later to transcribe loan words and foreign names. However, although seemingly alphabetic in nature uniliterales characters original Egyptians, were not an alphabetic system, and were never used by themselves to encode Egyptian speech or as a means of translating  your communication in writing. PROTO-SINAITIC SCRIPT - MIDDLE BRONZE In the Middle Bronze Age an apparently "alphabetic system" known as proto-Sinaitic script, believed by some that was developed in the Sinai Peninsula during the nineteenth century BC by the Canane...

APOLOGY FOR ABC, ALPHABET OR ABC Alphabet, abc alphabet or Middle Eastern (Writings and Scripts) The history of the alphabet, alphabets or abc began in ancient Egypt. Around 2700 BC, Egyptian writing in that time there was a group of some 24 hieroglyphs uniliterales are called to represent syllables that begin with a single consonant of their language, and a vocal (or vocal) to be supplied by the native speaker. These glyphs were used as pronunciation guides logograms, to write grammatical inflections, and later to transcribe loan words and foreign names. However, although seemingly alphabetic in nature uniliterales characters original Egyptians, were not an alphabetic system, and were never used by themselves to encode Egyptian speech or as a means of translating  your communication in writing. In the Middle Bronze Age an apparently "alphabetic system" known as proto-Sinaitic script, believed by some that was developed in the Sinai Peninsula during the nin...