CSR with only public key

[Salz, Rich]

>    I used CX509CertificateRequestCertificate  class to create CSR with only
    public key. 
    
  
Those functions/classes/names/whatever are not part of OpenSSL.

The OpenSSL "req" command cannot process as CSR unless it is signed by the private key.  If you have a requirement to sign a CSR with the public key, then probably other things within OpenSSL will not be able to handle it.