using either password-based mac (PBM) or a signature algorithm.
In case of signature algorithm, the certificate to use for the signature check
is preferably the one provided by a call to L<OSSL_CMP_CTX_set1_srvCert(3)>.
If no such sender cert has been pinned then candidate sender certificates are
using either password-based mac (PBM) or a signature algorithm.
In case of signature algorithm, the certificate to use for the signature check
is preferably the one provided by a call to L<OSSL_CMP_CTX_set1_srvCert(3)>.
If no such sender cert has been pinned then candidate sender certificates are