1*b077aed3SPierre Pronchery=pod 2*b077aed3SPierre Pronchery 3*b077aed3SPierre Pronchery=head1 NAME 4*b077aed3SPierre Pronchery 5*b077aed3SPierre ProncheryEVP_KEYEXCH-X25519, 6*b077aed3SPierre ProncheryEVP_KEYEXCH-X448 7*b077aed3SPierre Pronchery- X25519 and X448 Key Exchange algorithm support 8*b077aed3SPierre Pronchery 9*b077aed3SPierre Pronchery=head1 DESCRIPTION 10*b077aed3SPierre Pronchery 11*b077aed3SPierre ProncheryKey exchange support for the B<X25519> and B<X448> key types. 12*b077aed3SPierre Pronchery 13*b077aed3SPierre Pronchery=head2 Key exchange parameters 14*b077aed3SPierre Pronchery 15*b077aed3SPierre Pronchery=over 4 16*b077aed3SPierre Pronchery 17*b077aed3SPierre Pronchery=item "pad" (B<OSSL_EXCHANGE_PARAM_PAD>) <unsigned integer> 18*b077aed3SPierre Pronchery 19*b077aed3SPierre ProncherySee L<provider-keyexch(7)/Common Key Exchange parameters>. 20*b077aed3SPierre Pronchery 21*b077aed3SPierre Pronchery=back 22*b077aed3SPierre Pronchery 23*b077aed3SPierre Pronchery=head1 EXAMPLES 24*b077aed3SPierre Pronchery 25*b077aed3SPierre ProncheryKeys for the host and peer can be generated as shown in 26*b077aed3SPierre ProncheryL<EVP_PKEY-X25519(7)/Examples>. 27*b077aed3SPierre Pronchery 28*b077aed3SPierre ProncheryThe code to generate a shared secret is identical to 29*b077aed3SPierre ProncheryL<EVP_KEYEXCH-DH(7)/Examples>. 30*b077aed3SPierre Pronchery 31*b077aed3SPierre Pronchery=head1 SEE ALSO 32*b077aed3SPierre Pronchery 33*b077aed3SPierre ProncheryL<EVP_PKEY-FFC(7)>, 34*b077aed3SPierre ProncheryL<EVP_PKEY-DH(7)> 35*b077aed3SPierre ProncheryL<EVP_PKEY(3)>, 36*b077aed3SPierre ProncheryL<provider-keyexch(7)>, 37*b077aed3SPierre ProncheryL<provider-keymgmt(7)>, 38*b077aed3SPierre ProncheryL<OSSL_PROVIDER-default(7)>, 39*b077aed3SPierre ProncheryL<OSSL_PROVIDER-FIPS(7)>, 40*b077aed3SPierre Pronchery 41*b077aed3SPierre Pronchery=head1 COPYRIGHT 42*b077aed3SPierre Pronchery 43*b077aed3SPierre ProncheryCopyright 2020 The OpenSSL Project Authors. All Rights Reserved. 44*b077aed3SPierre Pronchery 45*b077aed3SPierre ProncheryLicensed under the Apache License 2.0 (the "License"). You may not use 46*b077aed3SPierre Proncherythis file except in compliance with the License. You can obtain a copy 47*b077aed3SPierre Proncheryin the file LICENSE in the source distribution or at 48*b077aed3SPierre ProncheryL<https://www.openssl.org/source/license.html>. 49*b077aed3SPierre Pronchery 50*b077aed3SPierre Pronchery=cut 51