query on key usage OIDs

[SIMON BABY <simonkbaby@xxxxxxxxx>]

Hi Team,

I am looking for openssl APIs to get all the OIDs associated with user certificate Key usage extension. For example my sample Key usage extension from the certificate is below:

X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment

I am looking for the APIs used to get the OIDs associated with  Digital Signature and Key Encipherment from the certificate.

Reagrds

Simon