Issue related to Finger print

[Ajeet kumar.S]

Dear All,

    In Openssl  for signature verification  we are using API
ASN1_item_verify().

     Let me know the data which is used for finger print (signature)
creation is the CA public key or some thing else data .

     Please clarify this doubt. How we are verifying the signature? 

 

 Thank you.

Regards,

--Ajeet  Kumar  Singh