This Software/Hardware product contains the algorithm IDEA(TM) as described and claimed in US Patent No. 5,214,703, EPO Patent No. 0482154 and filed Japanese Patent Application No. 508119/1991 "Device for the conversion of a digital block and use of same" (hereinafter referred to as "Algorithm"). Any use of the Algorithm for Commercial Purposes is thus subject to a license from Ascom Systec Ltd. of CH-5506 Mägenwil (Switzerland), being the patentee and sole owner of all rights, including the term IDEA(TM). Commercial Purposes shall mean any revenue generating purpose including but not limited to i) using the Algorithm for company internal purposes (subject to a Site License). ii) incorporating an application software containing the Algorithm into any hardware and/or software and distributing such hardware and/or software and/or providing services related thereto to others (subject to a Product License). iii) using a product containing an application software that uses the Algorithm (subject to an End-User License), except in case where such End-User has acquired an implied license by purchasing the said product from an authorized licensee or where the End-User has already signed up for a Site License. All such commercial license agreements are available exclusively from Ascom Systec Ltd. and may be requested via the Internet World Wide Web at http://www.ascom.ch/systec/infosec.html or by sending an electronic mail to IDEA@ascom.ch. Any misuse will be prosecuted. Use other than for Commercial Purposes is strictly limited to data transfer between private individuals and not serving Commercial Purposes. The use by government agencies, non-profit organizations etc. is considered as use for Commercial Purposes but may be subject to special conditions. Requests for waivers for non-commercial use (e.g. by software developers) are welcome.