公开(公告)号：US11232219B1

公开(公告)日：2022-01-25

申请号：US16264101

申请日：2019-01-31

Applicant: Xilinx, Inc.

Inventor： Bin Ochotta ,  Alec J. Wong ,  Nghia Do ,  Dennis McCrohan ,  David A. Knol ,  Premduth Vidyanandan ,  Satyam Jani

IPC: G06F21/62 ,  H04L9/08 ,  G06F21/10 ,  G06F21/76 ,  H04L9/32 ,  G06F21/60 ,  H04L9/14 ,  G06F21/64 ,  G06F21/12

Abstract: Removing protections on a session-key protected design include receiving a double encrypted vendor private key and an encrypted session key. The double encrypted vendor private key is decrypted into a single encrypted vendor-private key using a user private key, and the single encrypted vendor-private key is decrypted into a vendor private key using a vendor pass phrase. The encrypted session key is decrypted into a session key using the vendor private key, and the session-key protected design is decrypted into a plain design using the session key.