US 11,757,623 B2
Encryption method, decryption method, and related apparatus
Lijia Zhang, Shenzhen (CN); and Jing Chen, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Sep. 6, 2020, as Appl. No. 17/13,643.
Application 17/013,643 is a continuation of application No. 15/965,854, filed on Apr. 28, 2018, granted, now 10,771,966, issued on Sep. 8, 2020.
Application 15/965,854 is a continuation of application No. 14/263,253, filed on Apr. 28, 2014, granted, now 9,992,669, issued on Jun. 5, 2018.
Application 14/263,253 is a continuation of application No. PCT/CN2012/083661, filed on Oct. 29, 2012.
Claims priority of application No. 201110331957.0 (CN), filed on Oct. 27, 2011.
Prior Publication US 2020/0412527 A1, Dec. 31, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 29/06 (2006.01); H04L 9/06 (2006.01); H04L 9/40 (2022.01); H04L 9/12 (2006.01); H04W 12/02 (2009.01); H04W 12/04 (2021.01); H04W 12/033 (2021.01); H04W 4/70 (2018.01)
CPC H04L 9/0656 (2013.01) [H04L 9/12 (2013.01); H04L 63/10 (2013.01); H04L 63/104 (2013.01); H04W 12/02 (2013.01); H04W 12/033 (2021.01); H04W 12/04 (2013.01); H04L 2209/80 (2013.01); H04W 4/70 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving an initial layer-3 message, wherein the initial layer-3 message comprises an indication indicating that a part of the initial layer-3 message is encrypted;
generating a keystream; and
decrypting the encrypted part of the initial layer-3 message by performing an exclusive OR operation on the keystream and the initial layer-3 message.