NV9 USB manual set - cover sheet - Sensis

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NV9 USB Manual Set – Section 5 2NV9 USB MANUAL SET – SECTION 55. SOFTWARE IMPLEMENTATION GUIDE 35.1 Communication Protocols 35.2 Configuration Card Programming 85.3 SSP and eSSP 135.4 ccTalk 195.5 Escrow Control 225.6 SSP Escrow Function 235.7 Credit Hold Function 235.8 Connection Options 24Copyright © Innovative Technology Ltd 2012GA550-2
NV9 USB Manual Set – Section 5 35. SOFTWARE IMPLEMENTATION GUIDE5.1 Communication ProtocolsThe NV9 USB validator can use several different communication protocols, includingeSSP, SIO, ccTalk, MDB, Parallel, Binary and Pulse. Use of the MDB protocol requiresthe use of an external IF5 interface unit.Smiley ® Secure Protocol (SSP) is a secure serial interface specifically designed toaddress the problems experienced by cash systems in gaming machines. Problemssuch as acceptor swapping, reprogramming acceptors and line tapping are alladdressed.Encrypted Smiley ® Secure Protocol (eSSP) is an enhancement of SSP. eSSP uses thesame 16 bit CRC checksums on all packets as SSP, but also uses a Diffie-Hellman keyexchange to allow the host machine and validator to jointly establish a shared secretkey over an insecure communications channel. The encryption algorithm used is AESwith a 128-bit key; this provides a very high level of security.The recommended communication protocol for the NV9 USB validator is eSSP, as thisprovides the highest level of data transfer security. A ccTalk interface protocol is alsoavailable.For detailed information and the full protocol specifications please read the followingdocuments, which can be downloaded from the Innovative Technology Ltd website(www.innovative-technology.co.uk):• SSP Interface Specification (ITL Document number GA138)• ITL Bank Note Reader ccTalk Specification (ITL Document number GA966)Summaries of the NV9 USB validator socket connections for the supported interfacesare shown below:WARNING!Risk of unit damageDo not make any connections to the interface socketpins marked ‘Do not connect’ – making connectionsto these pins could cause severe damage to the unit.InformationEncryption of data stronglyrecommendedIt is recommended that all transactions with the NV9USB validator be encrypted to prevent commandsbeing recorded and replayed by an external device. Ifthis is not possible, then other (mechanical) measuresshould be used to prevent physical bus tapping.Copyright © Innovative Technology Ltd 2012GA550-2
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