| 发明名称 |
PROTECTING CHIP SETTINGS USING SECURED SCAN CHAINS |
| 摘要 |
Some embodiments include a method for processing a scan chain in an integrated circuit, the method comprising receiving, in the integrated circuit, the scan chain, wherein the scan chain includes a secret key pattern; separating the secret key pattern from the scan chain; storing the scan chain in a first plurality of latches; storing the secret key pattern in a second plurality of latches; comparing the secret key pattern to a reference key pattern, the reference key pattern stored in a third plurality of latches; determining, based on the comparing the secret key pattern to the reference key pattern, that the secret key pattern does not match the reference key pattern; and generating a signal indicating that the secret key pattern does not match the reference key pattern. |
| 申请公布号 |
US2016070933(A1) |
申请公布日期 |
2016.03.10 |
| 申请号 |
US201514944885 |
申请日期 |
2015.11.18 |
| 申请人 |
International Business Machines Corporation |
发明人 |
Geukes Benedikt;Hoppe Bodo;Michel Matteo;Wakunda Juergen |
| 分类号 |
G06F21/72;G06F21/76;G01R31/3177 |
主分类号 |
G06F21/72 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for processing a scan chain in an integrated circuit, the method comprising:
receiving, in the integrated circuit, the scan chain, wherein the scan chain includes a secret key pattern; separating the secret key pattern from the scan chain; storing the scan chain in a first plurality of latches; storing the secret key pattern in a second plurality of latches; comparing the secret key pattern to a reference key pattern, the reference key pattern stored in a third plurality of latches; determining, based on the comparing the secret key pattern to the reference key pattern, that the secret key pattern does not match the reference key pattern; and generating a signal indicating that the secret key pattern does not match the reference key pattern. |
| 地址 |
Armonk NY US |
