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+.\" -*- mode: troff; coding: utf-8 -*-
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+.\"
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+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD.  Of course, you'll have to process the
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+.        if !\nF==2 \{\
+.            nr % 0
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+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "EVP_KEYEXCH-X25519 7ssl"
+.TH EVP_KEYEXCH-X25519 7ssl 2024-01-30 3.2.1 OpenSSL
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+EVP_KEYEXCH\-X25519,
+EVP_KEYEXCH\-X448
+\&\- X25519 and X448 Key Exchange algorithm support
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+Key exchange support for the \fBX25519\fR and \fBX448\fR key types.
+.SS "Key exchange parameters"
+.IX Subsection "Key exchange parameters"
+.IP """pad"" (\fBOSSL_EXCHANGE_PARAM_PAD\fR) <unsigned integer>" 4
+.IX Item """pad"" (OSSL_EXCHANGE_PARAM_PAD) <unsigned integer>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.SH EXAMPLES
+.IX Header "EXAMPLES"
+Keys for the host and peer can be generated as shown in
+"Examples" in \fBEVP_PKEY\-X25519\fR\|(7).
+.PP
+The code to generate a shared secret is identical to
+"Examples" in \fBEVP_KEYEXCH\-DH\fR\|(7).
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBEVP_PKEY\-FFC\fR\|(7),
+\&\fBEVP_PKEY\-DH\fR\|(7)
+\&\fBEVP_PKEY\fR\|(3),
+\&\fBprovider\-keyexch\fR\|(7),
+\&\fBprovider\-keymgmt\fR\|(7),
+\&\fBOSSL_PROVIDER\-default\fR\|(7),
+\&\fBOSSL_PROVIDER\-FIPS\fR\|(7),
+.SH COPYRIGHT
+.IX Header "COPYRIGHT"
+Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+.PP
+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
+<https://www.openssl.org/source/license.html>.