{
    "mode": "man",
    "parameter": "EVP_KEYEXCH-X448",
    "section": "7",
    "url": "https://www.chedong.com/phpMan.php/man/EVP_KEYEXCH-X448/7/json",
    "generated": "2026-06-15T16:46:33Z",
    "sections": {
        "NAME": {
            "content": "EVPKEYEXCH-X25519, EVPKEYEXCH-X448 - X25519 and X448 Key Exchange algorithm support\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Key exchange support for the X25519 and X448 key types.\n",
            "subsections": [
                {
                    "name": "Key exchange parameters",
                    "content": "\"pad\" (OSSLEXCHANGEPARAMPAD) <unsigned integer>\nSee \"Common Key Exchange parameters\" in provider-keyexch(7).\n"
                }
            ]
        },
        "EXAMPLES": {
            "content": "Keys for the host and peer can be generated as shown in \"Examples\" in EVPPKEY-X25519(7).\n\nThe code to generate a shared secret is identical to \"Examples\" in EVPKEYEXCH-DH(7).\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "EVPPKEY-FFC(7), EVPPKEY-DH(7) EVPPKEY(3), provider-keyexch(7), provider-keymgmt(7),\nOSSLPROVIDER-default(7), OSSLPROVIDER-FIPS(7),\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.\n\nLicensed under the Apache License 2.0 (the \"License\").  You may not use this file except in\ncompliance with the License.  You can obtain a copy in the file LICENSE in the source\ndistribution or at <https://www.openssl.org/source/license.html>.\n\n\n\n3.0.2                                        2026-06-02                     EVPKEYEXCH-X25519(7SSL)",
            "subsections": []
        }
    },
    "summary": "EVPKEYEXCH-X25519, EVPKEYEXCH-X448 - X25519 and X448 Key Exchange algorithm support",
    "flags": [],
    "examples": [
        "Keys for the host and peer can be generated as shown in \"Examples\" in EVPPKEY-X25519(7).",
        "The code to generate a shared secret is identical to \"Examples\" in EVPKEYEXCH-DH(7)."
    ],
    "see_also": [
        {
            "name": "EVPPKEY-FFC",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEY-FFC/7/json"
        },
        {
            "name": "EVPPKEY-DH",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEY-DH/7/json"
        },
        {
            "name": "EVPPKEY",
            "section": "3",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEY/3/json"
        },
        {
            "name": "provider-keyexch",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/provider-keyexch/7/json"
        },
        {
            "name": "provider-keymgmt",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/provider-keymgmt/7/json"
        },
        {
            "name": "OSSLPROVIDER-default",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/OSSLPROVIDER-default/7/json"
        },
        {
            "name": "OSSLPROVIDER-FIPS",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/OSSLPROVIDER-FIPS/7/json"
        }
    ]
}