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SurFax, Security Encryption System For Facsimile
From: jbcondat () attmail com <jbcondat () attmail com>
Date: 08 Jun 93 23:59:59 GMT
SURFAX High Security Encryption System for Facsimile Communication * Connected between any GIII facsimile equipment and the telephone line; * Use a high performance crypto algorithm (2'(59) = 10'(18) possible cipher keys); * Designed for finance, commercial and industrial operations; * very easy and friendly handling. SurFax, used on both side of the PSTN with group 3 fax, provides security for all the transmitted documents. Installation +------------ +-----+ +--------+ +--------1 +--------+ +-----+ | Fax |====| Surfax |=====> | PSTN | <=====| Surfax |====| Fax | +-----+ +--------+ +--------+ +--------+ +-----+ Simply plugin and add-on No modification required to the fax equipment Operation +--------- 10-key keyboard 16 digits LCD display Secret key handling with keyboard Plain mode / encryption mode selectable with keyboard and hardkey Dimensions: 16 x 20 x 12 cm Weight: approx. 1.3 kg Power: 110/200 VAC, 50/60 Hz Facsimile Technical Specifications +---------------------------------- Two facsimile modems Transmission speed: 9600/7200/4800/2400 bit/s (CCITT V29, V27ter, V21) Designed to work with Group III facsimile equipments Fully compatible for transmission to non-crypto fax equipment (T30 protocol) Security Features +----------------- SurFax is a secret key system type. (1) KEY MANAGEMENT The system has an integrated key management. The user has to enter his 8 figures secret key on keyboard. A physical key allows the user to let Surfax in the chosen mode (plain or cipher). Otherwise, secret key can be erased at any time at the touch of a button, and is automatically erased after each communication. A 32-bit session key is generated by a "built-in" random number generator. Both secret and session keys are combined into a cypher key (2'(59) possible values) on each terminal. Both secret and session keys are never transferred in clear between the two terminals. A new cypher key is created for each transmitted page. Closed user groups can be created by request to the manufacturer (by setting a customer specific parameter). (2) CIPHER TECHNOLOGY The K.E.A. (KTT Encryption Algorithm) is KTT proprietary. It is a realtime data ciphering process and is used to encrypt only the facsimile data. It is based on a random generator, which initial state relies on a cipher key, issued from a secret key and a session key (2'(59)). More informations +----------------- Mr David COHEN SKTT Henry Kam Technologies & Telecommunations 2d rue de l'Epine Prolongee 93541 Bagnolet Cedex Phone: +33 1 42 87 54 00 Fax: +33 1 42 87 23 91 Jean-Bernard Condat General Secretary Chaos Computer Club France, B.P. 155, 93404 St-Ouen Cedex, France Private Address: P.O. 8005, 69351 Lyon Cedex 08, France Phone: +33 1 40101764, Fax: +33 1 47877070 InterNet: jbcondat () attmail com or cccf () altern com
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- SurFax, Security Encryption System For Facsimile jbcondat (Jun 08)