openssl/doc/man7/EVP_KDF-X942-CONCAT.pod

=pod

=head1 NAME

EVP_KDF-X942-CONCAT - The X942 Concat EVP_KDF implementation

=head1 DESCRIPTION

The EVP_KDF-X942-CONCAT algorithm is identical to EVP_KDF-X963. It is
used for key agreement to derive a key using input such as a shared secret key
and shared info.

=head2 Identity

"X942KDF_CONCAT" is the name for this implementation; it
can be used with the EVP_KDF_fetch() function.

This is an alias for "X963KDF".

See <EVP_KDF-X963(7)> for a list of supported parameters and examples.

=head1 HISTORY

This functionality was added to OpenSSL 3.0.

=head1 COPYRIGHT

Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.

=cut
Add EVP_KDF-X942 to the fips module The X942 KDF had been modified so that it supports all optional fields - not just the fields used by CMS. As there are 2 types of KDF for X942 - this has been made a bit clearer by adding an X942KDF-ASN1 alias. X942KDF-CONCAT has also been added as an alias of X963KDF. This work was instigated as a result of the ACVP tests optionally being able to use keybits for the supp_pubinfo field. Setting the parameter OSSL_KDF_PARAM_X942_USE_KEYBITS to 0 allows this to be disabled. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/13418) 2020-11-16 10:42:18 +08:00			`=pod`

			`=head1 NAME`

			`EVP_KDF-X942-CONCAT - The X942 Concat EVP_KDF implementation`

			`=head1 DESCRIPTION`

			`The EVP_KDF-X942-CONCAT algorithm is identical to EVP_KDF-X963. It is`
			`used for key agreement to derive a key using input such as a shared secret key`
			`and shared info.`

			`=head2 Identity`

			`"X942KDF_CONCAT" is the name for this implementation; it`
			`can be used with the EVP_KDF_fetch() function.`

			`This is an alias for "X963KDF".`

			`See <EVP_KDF-X963(7)> for a list of supported parameters and examples.`

			`=head1 HISTORY`

			`This functionality was added to OpenSSL 3.0.`

			`=head1 COPYRIGHT`

			`Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.`

			`Licensed under the Apache License 2.0 (the "License"). You may not use`
			`this file except in compliance with the License. You can obtain a copy`
			`in the file LICENSE in the source distribution or at`
			`L<https://www.openssl.org/source/license.html>.`

			`=cut`