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  • One-way compression function — In cryptography, a one way compression function is a function that transforms two fixed length inputs to an output of the same size as one of the inputs. The transformation is one way , meaning that it is difficult given a particular output to… …   Wikipedia

  • Compression — may refer to: In physical science Compression (physical), the result of the subjection of a material to compressive stress Compression member, a class of structural elements, of which a column is the most common specific example Compressibility,… …   Wikipedia

  • Compression shorts — are undergarments usually worn by athletes. They are form fitting garments and when worn cover the athlete s waist to mid or lower thigh. These garments are often made from a spandex type material, similar to cycling shorts. A major benefit of… …   Wikipedia

  • Compression sportswear — is clothing usually worn by athletes. They may be shorts, tights or underwear. They are form fitting garments and when worn cover the athlete s waist to mid or lower thigh. These garments are often made from a spandex type material. The main… …   Wikipedia

  • Compression stockings — and socks are specialised hosiery items designed to increase blood circulation. Their main theraputic purpose is to provide graduated pressure on the lower leg and foot and, in some cases, the thigh, to alleviate circulatory problems such as… …   Wikipedia

  • Compression release engine brake — Jacobs Engine Brake Division logo. A vie …   Wikipedia

  • Compression driver — A compression driver is a type of loudspeaker driver which uses the technique of compression to achieve high efficiencies. In this context compression refers to the fact that the area of the loudspeaker diaphragm is significantly larger than the… …   Wikipedia

  • Compression — A&V Improper video signal level caused by nonlinearity in a circuit s transfer function. Results in lack of detail in either the black or white areas of the video picture. Can also be caused by pointing a video camera at a scene that has a total… …   Audio and video glossary

  • Compression de données universelle — Un compresseur sans perte universel ne peut pas exister. Plus précisément, pour tout compresseur sans perte, on est certain que : il est impossible de compresser strictement tous les mots ; s il existe un mot qui est strictement… …   Wikipédia en Français

  • Compression theorem — In computational complexity theory the compression theorem is an important theorem about the complexity of computable functions. The theorem states that there exists no largest complexity class, with computable boundary, which contains all… …   Wikipedia

  • Cryptographic hash function — A cryptographic hash function (specifically, SHA 1) at work. Note that even small changes in the source input (here in the word over ) drastically change the resulting output, by the so called avalanche effect. A cryptographic hash function is a… …   Wikipedia

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