| 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 can include: 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; comparing the secret key pattern to a reference key pattern; 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 | US9222973(B2) | 申请公布日期 | 2015.12.29 |
| 申请号 | US201213355265 | 申请日期 | 2012.01.20 |
| 申请人 | International Business Machines Corporation | 发明人 | Geukes Benedikt;Hoppe Bodo;Michel Matteo;Wakunda Juergen |
| 分类号 | G06F21/00;G01R31/317;G01R31/3185 | 主分类号 | G06F21/00 |
| 代理机构 | DeLizio Law, PLLC | 代理人 | DeLizio Law, PLLC |
| 主权项 | 1. A method for processing scan chain input data in an integrated circuit, the method comprising: receiving, in the integrated circuit, the scan chain input data, wherein the scan chain input data includes a secret key pattern; separating the secret key pattern from the scan chain input data; comparing the secret key pattern to a reference key pattern; 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; generating a signal indicating that the secret key pattern does not match the reference key pattern; storing a copy of the scan chain input data in a secure latch; and prohibiting access to the secure latch after generation of the signal indicating that the secret key pattern does not match the reference key pattern. | ||
| 地址 | Armonk NY US | ||