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参数资料
| 型号： | FTDI USB-KEY |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | MOD USB SECURITY KEY DEVICE |
| 产品目录绘图： | FTDI USB-KEY |
| 标准包装： | 10 |
| 系列： | USBmadeEZ-UART |
| 附件类型： | USB 安全密匙 |
| 技术规格： | USB 不对称公用密钥加密安全密码锁 |
| 适用于相关产品： | PC，带 USB 接口 |
| 其它名称： | 768-1075 USB-KEY |
Document Reference No.: FT_000062
USB-Key Datasheet Version 1.00
Clearance No.: FTDI# 41
3
Application Examples
Numerous examples showing how to access the unique FTDIChip-ID? number is given in
many different software languages on the FTDI website at
http://www.ftdichip.com/Projects/FTDIChip-ID.htm
3.1 Security Dongle Using SafeGuard-IT
SafeGuard-IT is an ActiveX control for Windows which works with the FTDI_USB_KEY to
provide security dongle functionality. The SafeGuard-IT component works by exploiting the
FTDIChip-ID? feature of the FT232R within the FTDI-USB-KEY together with an asymmetric
public-private key encryption scheme.
The SafeGuard-IT security scheme works as follows:
1. Generate a public-private key pair using the SafeGuard-IT ActiveX control. These keys should be
saved to files.
2. Encrypt the FTDIChip-ID using the private key and an optional password. This encrypted
information is then stored in the FTDI_USB_KEY.
3. Distribute the programmed FTDI_USB_KEY with the application software. The Safeguard-IT DLL
file and the public key are also required by the application software.
4. When the application software is loaded, it can use the SafeGuard-IT control to verify that the
required FTDI_USB_KEY device is connected to the client PC. This can be used to prevent
software from running if a licensed dongle is not connected.
The SafeGuard-IT ActiveX control and SafeGuard-IT.dll are available free from the FTDI
website http://www.ftdichip.com/Projects/SafeGuard-IT/SafeGuard-IT.zip
Copyright ? Future Technology Devices International Limited
5
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