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Security chip and application processor

  • US 10,263,961 B2
  • Filed: 11/21/2016
  • Issued: 04/16/2019
  • Est. Priority Date: 01/21/2016
  • Status: Active Grant
First Claim
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1. An operating method of a security chip, the operating method comprising:

  • performing, at the security chip,transmitting, to an application processor (AP), a device public key of a device key pair, the device key pair associated with public key infrastructure communications;

    receiving a request, from the AP, to generate a digital signature on a certificate form, the certificate form including the device public key;

    generating the digital signature, based on the received request to generate the digital signature, the digital signature generated based on an encryption operation using a certificate authority (CA) private key;

    transmitting the digital signature to the AP;

    receiving a certificate from the AP, the certificate including the digital signature; and

    storing the certificate at the security chip.

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