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