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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)
36 lines
892 B
Plaintext
36 lines
892 B
Plaintext
=pod
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=head1 NAME
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EVP_KDF-X942-CONCAT - The X942 Concat EVP_KDF implementation
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=head1 DESCRIPTION
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The EVP_KDF-X942-CONCAT algorithm is identical to EVP_KDF-X963. It is
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used for key agreement to derive a key using input such as a shared secret key
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and shared info.
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=head2 Identity
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"X942KDF_CONCAT" is the name for this implementation; it
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can be used with the EVP_KDF_fetch() function.
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This is an alias for "X963KDF".
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See <EVP_KDF-X963(7)> for a list of supported parameters and examples.
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=head1 HISTORY
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This functionality was added to OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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