User's Manual
Table Of Contents
- VX 675
- Contents
- Preface
- Terminal Overview
- Terminal Setup
- Selecting Terminal Location
- Unpacking the Shipping Carton
- Examining Terminal Features
- Examining Connection Ports
- Installing the Paper Roll
- Installing the SIM Card
- Installing the SD Card
- Using the Battery
- Battery Behavior (No Power Pack)
- Connecting the Terminal Power Pack
- Charging the Battery
- Using the VX 675 Base Stations
- Powering Up the Base
- Docking the Terminal on the Base
- Undocking the Terminal from the Base
- Conducting Wireless Transactions
- Conducting Smart Card Transactions
- Using the Magnetic Card Reader
- Connecting to USB Host
- VX 675 ECR (Fiscal Module) Support
- VX 675 3G and GPS Support
- Using the Terminal Keys
- Verix Terminal Manager
- File Authentication
- Performing Downloads
- Downloads and Uploads
- Download Methods
- Download Tools
- Download Content
- Full and Partial Downloads
- Support for Multiple Applications
- Use of I: drive and F: drive
- File Authentication Requirements
- Required Certificates and Signature Files
- The File Authentication Process During an Application Download
- File Group Permissions
- Download an Operating System Update Provided by VeriFone
- File Authentication for Back-to-Back Application Downloads
- Timing Considerations Due to the Authentication Process
- Support for File Compression
- Effect of Downloads on Existing Files and Data
- Direct Operating System Downloads
- Back-to-Back Application Downloads
- Specifications
- Maintenance
- VeriFone Service and Support
- System Messages
- Troubleshooting Guidelines
- Port Pinouts
- ASCII Table
- VX 675 Battery Information
- Glossary
- Application ID
- Application program
- Application prompt
- ASCII
- Back-to-back application download
- Baud
- Bit
- Block
- Boot loader
- Buffer
- Byte
- Calendar/clock chip
- Card reader
- Carrier
- Certificate
- Character
- CONFIG.SYS file
- CPU
- Data
- Data entry
- Data packet
- Default
- Delete
- Diagnostics
- Direct download
- Display
- Download
- File authentication
- Firmware
- Fixed prompt
- Flash memory
- Host computer
- Input
- Interface
- Keyed file character set
- Keyed file editor
- Keyed file record
- Keypad
- Local functions
- Manual transaction
- Memory
- Messages
- Non-volatile memory
- Normal Mode
- Packet
- Packet-switched networks
- Parameter
- Password
- PC
- Peripheral terminal
- Port
- POS terminal
- Power pack
- Prompt
- Protocol
- PTID
- RAM
- Remote host computer
- Scroll
- Search key
- Serial port
- Signature file
- mDRAM
- Subroutine
- Swipe
- Verix Terminal Manager
- Verix Terminal Manager password
- Terminal
- Terminal ID
- Terminal-to-terminal application upload
- Track 1, 2, or 3 data
- Transaction
- Variable
- Volatile memory
- Index
- Contact VeriFone
PERFORMING DOWNLOADS
File Authentication Requirements
116 VX 675 REFERENCE GUIDE
certificates are checked one by one and, on authentication, are added to the
certificate tree of the receiving terminal. Then, all signature files are checked.
• Downloaded certificates (receiving terminal) must synchronize with the
certificate data present in the certificate tree.
“Synchronized” means that the certificate tree of the receiving terminal can be
no more than one revision out-of-sync with the certificate tree on the sending
terminal or the files on the receiving terminal do not successfully authenticate.
In this case, the term revision refers to any generic change to the current
sponsor and signer certificates stored in the certificate tree of a deployment
terminal.
• When the back-to-back download completes and all certificates and signature
files authenticate, the receiving terminal restarts. If the name of the *GO
application is specified in the Group 1 CONFIG.SYS file of the receiving
terminal, the application executes and the application prompt or logo is
displayed on the terminal.
Timing
Considerations Due
to the
Authentication
Process
The file authentication process takes some time. The total amount of time
required depends on a number of factors:
• The number and size of application files.
• The number of certificates and signature files.
• Whether the file compression feature of Download Manager is being used to
perform the download.
Here are a few additional considerations that may affect the total elapsed time
required to complete the download operation:
• Because additional processing steps are required, an operating system
download takes longer to complete than an application download (several
minutes as opposed to a few seconds).
• The download order of a batch of certificate files may affect total processing
time. Digital certificates are validated in a looping process where the validation
process cycles as many times as necessary to establish the proper
relationship and position of a given certificate in the certificate tree that exists
in the terminal.
To optimize the authentication process, download certificates in a
higher-level-certificates-first order. This way, they process faster than a
random order download.
Support for File
Compression
For information regarding file compression, refer to the Verix eVo Volume I:
Operating System Programmers Manual (VPN DOC00301).