=head1 DESCRIPTION
+Certificate Management Protocol (CMP, RFC 4210) extension to OpenSSL
+
ITAV is short for InfoTypeAndValue. This type is defined in RFC 4210
section 5.3.19 and Appendix F. It is used at various places in CMP messages,
e.g., in the generalInfo PKIHeader field, to hold a key-value pair.
L<OSSL_CMP_CTX_new(3)>, L<OSSL_CMP_CTX_free(3)>, L<ASN1_TYPE_set(3)>
+=head1 HISTORY
+
+The OpenSSL CMP support was added in OpenSSL 3.0.
+
=head1 COPYRIGHT
Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.