1*b077aed3SPierre Pronchery=pod 2*b077aed3SPierre Pronchery 3*b077aed3SPierre Pronchery=head1 NAME 4*b077aed3SPierre Pronchery 5*b077aed3SPierre ProncheryEVP_MD-NULL - The NULL EVP_MD implementation 6*b077aed3SPierre Pronchery 7*b077aed3SPierre Pronchery=head1 DESCRIPTION 8*b077aed3SPierre Pronchery 9*b077aed3SPierre ProncherySupport for a NULL digest through the B<EVP_MD> API. 10*b077aed3SPierre ProncheryThis algorithm does nothing and returns 1 for its init, 11*b077aed3SPierre Proncheryupdate and final methods. 12*b077aed3SPierre Pronchery 13*b077aed3SPierre Pronchery=head2 Algorithm Name 14*b077aed3SPierre Pronchery 15*b077aed3SPierre ProncheryThe following algorithm is available in the default provider: 16*b077aed3SPierre Pronchery 17*b077aed3SPierre Pronchery=over 4 18*b077aed3SPierre Pronchery 19*b077aed3SPierre Pronchery=item "NULL" 20*b077aed3SPierre Pronchery 21*b077aed3SPierre Pronchery=back 22*b077aed3SPierre Pronchery 23*b077aed3SPierre Pronchery=head2 Gettable Parameters 24*b077aed3SPierre Pronchery 25*b077aed3SPierre ProncheryThis implementation supports the common gettable parameters described 26*b077aed3SPierre Proncheryin L<EVP_MD-common(7)>. 27*b077aed3SPierre Pronchery 28*b077aed3SPierre Pronchery=head1 SEE ALSO 29*b077aed3SPierre Pronchery 30*b077aed3SPierre ProncheryL<EVP_MD_CTX_set_params(3)>, L<provider-digest(7)>, 31*b077aed3SPierre ProncheryL<OSSL_PROVIDER-default(7)> 32*b077aed3SPierre Pronchery 33*b077aed3SPierre Pronchery=head1 COPYRIGHT 34*b077aed3SPierre Pronchery 35*b077aed3SPierre ProncheryCopyright 2023 The OpenSSL Project Authors. All Rights Reserved. 36*b077aed3SPierre Pronchery 37*b077aed3SPierre ProncheryLicensed under the Apache License 2.0 (the "License"). You may not use 38*b077aed3SPierre Proncherythis file except in compliance with the License. You can obtain a copy 39*b077aed3SPierre Proncheryin the file LICENSE in the source distribution or at 40*b077aed3SPierre ProncheryL<https://www.openssl.org/source/license.html>. 41*b077aed3SPierre Pronchery 42*b077aed3SPierre Pronchery=cut 43