发明授权
US08214630B2 Method and apparatus for controlling enablement of JTAG interface
有权
用于控制JTAG接口启用的方法和装置
- 专利标题: Method and apparatus for controlling enablement of JTAG interface
- 专利标题(中): 用于控制JTAG接口启用的方法和装置
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申请号: US12391488申请日: 2009-02-24
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公开(公告)号: US08214630B2公开(公告)日: 2012-07-03
- 发明人: Petr Peterka , Alexander Medvinsky
- 申请人: Petr Peterka , Alexander Medvinsky
- 申请人地址: US PA Horsham
- 专利权人: General Instrument Corporation
- 当前专利权人: General Instrument Corporation
- 当前专利权人地址: US PA Horsham
- 代理商 Susan R. Payne
- 主分类号: G06F15/177
- IPC分类号: G06F15/177 ; G06F21/00 ; G06F11/30 ; H04L9/32
摘要:
A method, device and system for controlling JTAG interface enablement within a communication device. The JTAG interface can be selectively enabled based on the receipt of an encrypted access token generated by an access token server. The access token server generates the access token in response to an end user providing appropriate device-specific information. The access token includes appropriate information that, upon appropriate authentication and decryption, can temporarily device bind the boot code image of the device in a manner that enables the JTAG interface. Alternatively, the access token includes appropriate information that instructs the general purpose processor to choose between JTAG interface enablement information and JTAG interface disablement information for use with the boot code image of the device. The access token can include expiration information that causes an enabled JTAG interface to revert back to its disabled status upon expiration of the access token.
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