Adding upstream version 4.22.0.upstream/4.22.0

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

1 files changed, 162 insertions, 0 deletions

diff --git a/upstream/archlinux/man7/EVP_KEYEXCH-ECDH.7ssl b/upstream/archlinux/man7/EVP_KEYEXCH-ECDH.7ssl
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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
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+.nf
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+..
+.de Ve \" End verbatim text
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+..
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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'.
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+..
+.        if !\nF==2 \{\
+.            nr % 0
+.            nr F 2
+.        \}
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+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "EVP_KEYEXCH-ECDH 7ssl"
+.TH EVP_KEYEXCH-ECDH 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\-ECDH \- ECDH Key Exchange algorithm support
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+Key exchange support for the \fBECDH\fR key type.
+.SS "ECDH Key Exchange parameters"
+.IX Subsection "ECDH Key Exchange parameters"
+.IP """ecdh-cofactor-mode"" (\fBOSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE\fR) <integer>" 4
+.IX Item """ecdh-cofactor-mode"" (OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE) <integer>"
+Sets or gets the ECDH mode of operation for the associated key exchange ctx.
+.Sp
+In the context of an Elliptic Curve Diffie-Hellman key exchange, this parameter
+can be used to select between the plain Diffie-Hellman (DH) or Cofactor
+Diffie-Hellman (CDH) variants of the key exchange algorithm.
+.Sp
+When setting, the value should be 1, 0 or \-1, respectively forcing cofactor mode
+on, off, or resetting it to the default for the private key associated with the
+given key exchange ctx.
+.Sp
+When getting, the value should be either 1 or 0, respectively signaling if the
+cofactor mode is on or off.
+.Sp
+See also \fBprovider\-keymgmt\fR\|(7) for the related
+\&\fBOSSL_PKEY_PARAM_USE_COFACTOR_ECDH\fR parameter that can be set on a
+per-key basis.
+.IP """kdf-type"" (\fBOSSL_EXCHANGE_PARAM_KDF_TYPE\fR) <UTF8 string>" 4
+.IX Item """kdf-type"" (OSSL_EXCHANGE_PARAM_KDF_TYPE) <UTF8 string>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.IP """kdf-digest"" (\fBOSSL_EXCHANGE_PARAM_KDF_DIGEST\fR) <UTF8 string>" 4
+.IX Item """kdf-digest"" (OSSL_EXCHANGE_PARAM_KDF_DIGEST) <UTF8 string>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.IP """kdf-digest-props"" (\fBOSSL_EXCHANGE_PARAM_KDF_DIGEST_PROPS\fR) <UTF8 string>" 4
+.IX Item """kdf-digest-props"" (OSSL_EXCHANGE_PARAM_KDF_DIGEST_PROPS) <UTF8 string>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.IP """kdf-outlen"" (\fBOSSL_EXCHANGE_PARAM_KDF_OUTLEN\fR) <unsigned integer>" 4
+.IX Item """kdf-outlen"" (OSSL_EXCHANGE_PARAM_KDF_OUTLEN) <unsigned integer>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.IP """kdf-ukm"" (\fBOSSL_EXCHANGE_PARAM_KDF_UKM\fR) <octet string>" 4
+.IX Item """kdf-ukm"" (OSSL_EXCHANGE_PARAM_KDF_UKM) <octet string>"
+See "Common Key Exchange parameters" in \fBprovider\-keyexch\fR\|(7).
+.SH EXAMPLES
+.IX Header "EXAMPLES"
+Keys for the host and peer must be generated as shown in
+"Examples" in \fBEVP_PKEY\-EC\fR\|(7) using the same curve name.
+.PP
+The code to generate a shared secret for the normal case is identical to
+"Examples" in \fBEVP_KEYEXCH\-DH\fR\|(7).
+.PP
+To derive a shared secret on the host using the host's key and the peer's public
+key but also using X963KDF with a user key material:
+.PP
+.Vb 10
+\&    /* It is assumed that the host_key, peer_pub_key and ukm are set up */
+\&    void derive_secret(EVP_PKEY *host_key, EVP_PKEY *peer_key,
+\&                       unsigned char *ukm, size_t ukm_len)
+\&    {
+\&        unsigned char secret[64];
+\&        size_t out_len = sizeof(secret);
+\&        size_t secret_len = out_len;
+\&        unsigned int pad = 1;
+\&        OSSL_PARAM params[6];
+\&        EVP_PKEY_CTX *dctx = EVP_PKEY_CTX_new_from_pkey(NULL, host_key, NULL);
+\&
+\&        EVP_PKEY_derive_init(dctx);
+\&
+\&        params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &pad);
+\&        params[1] = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_TYPE,
+\&                                                     "X963KDF", 0);
+\&        params[2] = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_DIGEST,
+\&                                                     "SHA1", 0);
+\&        params[3] = OSSL_PARAM_construct_size_t(OSSL_EXCHANGE_PARAM_KDF_OUTLEN,
+\&                                                &out_len);
+\&        params[4] = OSSL_PARAM_construct_octet_string(OSSL_EXCHANGE_PARAM_KDF_UKM,
+\&                                                      ukm, ukm_len);
+\&        params[5] = OSSL_PARAM_construct_end();
+\&        EVP_PKEY_CTX_set_params(dctx, params);
+\&
+\&        EVP_PKEY_derive_set_peer(dctx, peer_pub_key);
+\&        EVP_PKEY_derive(dctx, secret, &secret_len);
+\&        ...
+\&        OPENSSL_clear_free(secret, secret_len);
+\&        EVP_PKEY_CTX_free(dctx);
+\&    }
+.Ve
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBEVP_PKEY\-EC\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\-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>.