US 11,928,247 B2
Methods and devices for AI model integrity and secrecy protection
Tsung-Hsien Lin, Zhubei (TW); Jen-Shi Wu, Zhubei (TW); and Hsiao-Ming Chang, New Taipei (TW)
Assigned to CVITEK CO. LTD., Beijing (CN)
Filed by Cvitek Co. Ltd., Beijing (CN)
Filed on Nov. 1, 2021, as Appl. No. 17/516,423.
Claims priority of application No. 202011329685.6 (CN), filed on Nov. 24, 2020.
Prior Publication US 2022/0164481 A1, May 26, 2022
Int. Cl. G06F 21/64 (2013.01); G06F 21/60 (2013.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC G06F 21/64 (2013.01) [G06F 21/602 (2013.01); H04L 9/0825 (2013.01); H04L 9/0863 (2013.01); H04L 9/3236 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An encryption and signature device for AI model protection, comprising:
a key derivation unit configured to derive a model key according to a model password and a derivation function;
a model encryption unit configured to encrypt an AI model according to the model key to generate an encrypted AI model;
a model password encryption unit configured to encrypt the model password to generate an encrypted model password;
an image generation unit configured to generate an image file according to the encrypted model password and the encrypted AI model; and
a signature unit configured to sign the image file according to a private key to obtain a signed image file.