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NV11 Manual Set – Section 5
3
Copyright © Innovative Technology Ltd 2012
GA963-2
5.
SOFTWARE IMPLEMENTATION GUIDE
5.1
Communication Protocols
The NV11 validator can use two different communication protocols - SSP/eSSP and
ccTalk.
Smiley
®
Secure Protocol (SSP) is a secure serial interface specifically designed to
address the problems experienced by cash systems in gaming machines. Problems
such as acceptor swapping, reprogramming acceptors and line tapping are all
addressed.
Encrypted Smiley
®
Secure Protocol (eSSP) is an enhancement of SSP. eSSP uses the
same 16 bit CRC checksums on all packets as SSP, but also uses a Diffie-Hellman key
exchange to allow the host machine and validator to jointly establish a shared secret
key over an insecure communications channel. The encryption algorithm used is AES
with a 128-bit key; this provides a very high level of security.
The recommended communication protocol for the NV11 validator is eSSP, as this
provides the highest level of data transfer security. A ccTalk interface protocol is also
available.
For detailed information and the full protocol specifications please read the following
documents, which can be downloaded from the Innovative Technology Ltd website
(www.innovative-technology.co.uk):
SSP Interface Specification (ITL Document number GA138)
ccTalk Communications Protocol Specification [additional commands]
(ITL Document number GA964)
ITL Bank Note Reader ccTalk Specification (ITL Document number GA966)
Summaries of the NV11 validator socket connections for the supported interfaces are
shown below:
WARNING!
Risk of unit damage
Do not make any connections to the interface socket
pins marked ‘
Do not connect
’ – making connections
to these pins could cause severe damage to the unit.
Information
Encryption of data strongly
recommended
It is recommended that all transactions with the NV11
validator be encrypted to prevent commands being
recorded and replayed by an external device. If this is
not possible, then other (mechanical) measures
should be used to prevent physical bus tapping.
Содержание NV11
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Страница 2: ...NV11 MANUAL SET INTRODUCTION...
Страница 10: ...NV11 MANUAL SET QUICK START AND CONFIGURATION GUIDE SECTION 1...
Страница 27: ...NV11 MANUAL SET FIELD SERVICE MANUAL SECTION 2...
Страница 49: ...NV11 MANUAL SET ITL SOFTWARE SUPPORT GUIDE SECTION 3...
Страница 57: ...NV11 Manual Set Section 3 9 Copyright Innovative Technology Ltd 2012 GA963 2...
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Страница 92: ...NV11 MANUAL SET MECHANICAL AND ELECTRICAL MANUAL SECTION 4...
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Страница 131: ...NV11 Manual Set Section 4 40 Copyright Innovative Technology Ltd 2012 GA963 2 Cashbox Options...
Страница 134: ...NV11 MANUAL SET SOFTWARE IMPLEMENTATION GUIDE SECTION 5...
Страница 157: ...NV11 MANUAL SET TECHNICAL APPENDICES SECTION 6...