Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 insertions, 0 deletions

diff --git a/upstream/archlinux/man3/EVP_PKEY_derive.3ssl b/upstream/archlinux/man3/EVP_PKEY_derive.3ssl
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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
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+..
+.de Ve \" End verbatim text
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+.fi
+..
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+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\"
+.\" 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
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
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+..
+.        if !\nF==2 \{\
+.            nr % 0
+.            nr F 2
+.        \}
+.    \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "EVP_PKEY_DERIVE 3ssl"
+.TH EVP_PKEY_DERIVE 3ssl 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_PKEY_derive_init, EVP_PKEY_derive_init_ex,
+EVP_PKEY_derive_set_peer_ex, EVP_PKEY_derive_set_peer, EVP_PKEY_derive
+\&\- derive public key algorithm shared secret
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/evp.h>
+\&
+\& int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
+\& int EVP_PKEY_derive_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[]);
+\& int EVP_PKEY_derive_set_peer_ex(EVP_PKEY_CTX *ctx, EVP_PKEY *peer,
+\&                                 int validate_peer);
+\& int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
+\& int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+\&\fBEVP_PKEY_derive_init()\fR initializes a public key algorithm context \fIctx\fR for
+shared secret derivation using the algorithm given when the context was created
+using \fBEVP_PKEY_CTX_new\fR\|(3) or variants thereof.  The algorithm is used to
+fetch a \fBEVP_KEYEXCH\fR method implicitly, see "Implicit fetch" in \fBprovider\fR\|(7) for
+more information about implicit fetches.
+.PP
+\&\fBEVP_PKEY_derive_init_ex()\fR is the same as \fBEVP_PKEY_derive_init()\fR but additionally
+sets the passed parameters \fIparams\fR on the context before returning.
+.PP
+\&\fBEVP_PKEY_derive_set_peer_ex()\fR sets the peer key: this will normally
+be a public key. The \fIvalidate_peer\fR will validate the public key if this value
+is non zero.
+.PP
+\&\fBEVP_PKEY_derive_set_peer()\fR is similar to \fBEVP_PKEY_derive_set_peer_ex()\fR with
+\&\fIvalidate_peer\fR set to 1.
+.PP
+\&\fBEVP_PKEY_derive()\fR derives a shared secret using \fIctx\fR.
+If \fIkey\fR is NULL then the maximum size of the output buffer is written to the
+\&\fIkeylen\fR parameter. If \fIkey\fR is not NULL then before the call the \fIkeylen\fR
+parameter should contain the length of the \fIkey\fR buffer, if the call is
+successful the shared secret is written to \fIkey\fR and the amount of data
+written to \fIkeylen\fR.
+.SH NOTES
+.IX Header "NOTES"
+After the call to \fBEVP_PKEY_derive_init()\fR, algorithm
+specific control operations can be performed to set any appropriate parameters
+for the operation.
+.PP
+The function \fBEVP_PKEY_derive()\fR can be called more than once on the same
+context if several operations are performed using the same parameters.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fBEVP_PKEY_derive_init()\fR and \fBEVP_PKEY_derive()\fR return 1
+for success and 0 or a negative value for failure.
+In particular a return value of \-2 indicates the operation is not supported by
+the public key algorithm.
+.SH EXAMPLES
+.IX Header "EXAMPLES"
+Derive shared secret (for example DH or EC keys):
+.PP
+.Vb 2
+\& #include <openssl/evp.h>
+\& #include <openssl/rsa.h>
+\&
+\& EVP_PKEY_CTX *ctx;
+\& ENGINE *eng;
+\& unsigned char *skey;
+\& size_t skeylen;
+\& EVP_PKEY *pkey, *peerkey;
+\& /* NB: assumes pkey, eng, peerkey have been already set up */
+\&
+\& ctx = EVP_PKEY_CTX_new(pkey, eng);
+\& if (!ctx)
+\&     /* Error occurred */
+\& if (EVP_PKEY_derive_init(ctx) <= 0)
+\&     /* Error */
+\& if (EVP_PKEY_derive_set_peer(ctx, peerkey) <= 0)
+\&     /* Error */
+\&
+\& /* Determine buffer length */
+\& if (EVP_PKEY_derive(ctx, NULL, &skeylen) <= 0)
+\&     /* Error */
+\&
+\& skey = OPENSSL_malloc(skeylen);
+\&
+\& if (!skey)
+\&     /* malloc failure */
+\&
+\& if (EVP_PKEY_derive(ctx, skey, &skeylen) <= 0)
+\&     /* Error */
+\&
+\& /* Shared secret is skey bytes written to buffer skey */
+.Ve
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBEVP_PKEY_CTX_new\fR\|(3),
+\&\fBEVP_PKEY_encrypt\fR\|(3),
+\&\fBEVP_PKEY_decrypt\fR\|(3),
+\&\fBEVP_PKEY_sign\fR\|(3),
+\&\fBEVP_PKEY_verify\fR\|(3),
+\&\fBEVP_PKEY_verify_recover\fR\|(3),
+\&\fBEVP_KEYEXCH_fetch\fR\|(3)
+.SH HISTORY
+.IX Header "HISTORY"
+The \fBEVP_PKEY_derive_init()\fR, \fBEVP_PKEY_derive_set_peer()\fR and \fBEVP_PKEY_derive()\fR
+functions were originally added in OpenSSL 1.0.0.
+.PP
+The \fBEVP_PKEY_derive_init_ex()\fR and \fBEVP_PKEY_derive_set_peer_ex()\fR functions were
+added in OpenSSL 3.0.
+.SH COPYRIGHT
+.IX Header "COPYRIGHT"
+Copyright 2006\-2022 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>.