公开(公告)号：US20170180131A1

公开(公告)日：2017-06-22

申请号：US14971370

申请日：2015-12-16

Applicant: Intel Corporation

Inventor： Santosh Ghosh ,  Manoj R. Sastry ,  Solmaz Ghaznavi ,  Julien Carreno ,  Padraig J. Kearney

IPC: H04L9/32 ,  H04L9/06 ,  H04L29/06

CPC classification number: H04L9/3239 ,  G06F21/75 ,  G06F21/85 ,  G09C1/00 ,  H04L9/0643 ,  H04L63/061 ,  H04L63/123 ,  H04L2209/26

Abstract: System and techniques for secure unlock to access debug hardware are described herein. A cryptographic key may be received at a hardware debug access port of a device. A digest may be computed from the cryptographic key at an unlock unit of the device. A fuse value may be received from a non-volatile read-only storage on the device. The digest and the fuse value may be compared to determine whether they are the same. A pass-fail pulse may be provided that indicates the result of the comparing.