=LF=AUTHOR: Pierre     Loidreau
 =LF=CAT___: SystemAdministration
 =LF=TITLE_: Introduction to cryptography
 =LF=NUMBER: 243
 =LF=ANAME_: article243.shtml
 =LF=PARSER: 2.51
 =LF=METADT: 2002-5
 =LF=TRANSTO=en: Axelle Apvrille