US 11,722,300 B2
Chip, private key generation method, and trusted certification method
Heng Cai, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 22, 2021, as Appl. No. 17/181,841.
Application 17/181,841 is a continuation of application No. PCT/CN2018/109537, filed on Oct. 9, 2018.
Prior Publication US 2021/0176056 A1, Jun. 10, 2021
Int. Cl. H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0897 (2013.01) [H04L 9/0825 (2013.01); H04L 9/3263 (2013.01); H04L 9/3271 (2013.01); H04L 2209/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A chip comprising:
an external module; and
a security core module comprising:
a memory configured to:
store a first hash of a first root public key and a unique device secret (UDS) of the chip, and
store a layer 1 private key; and
a security core configured to generate a layer 1 public key and the layer 1 private key based on the first hash,
wherein the security core module is configured to prevent access to itself by the external module and by an external device outside the chip.