A case of disseminated penicilliosis marneffei, the first to be diagnosed in Italy, is described in a male HIV-positive drug addict. The patient had visited Thailand several times in the two years prior to his hospitalization. The presenting signs were fever, productive cough, facial skin papules an
Contracting a macro virus whilst surfing the internet
โ Scribed by David Aubrey-Jones
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 105 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0167-4048
No coin nor oath required. For personal study only.
โฆ Synopsis
An IBM developed algorithm was adopted in 1977 as a national standard: the Data Encryption Standard (DES).Although the entire algorithm was made available to the public, the design considerations were not published. Many people speculated that the lack of disclosure was due to some 'trap door' or hidden weakness in DES.The purpose of this paper is to dispel this notion by (1) discussing the concepts of differential cryptanalysis and (2) deriving the DES design concepts to block attacks based on differential cryptanalysis. Also discussed are events leading up to the DES design as well as methods to strengthen DES.
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