{
    "content": [
        {
            "type": "text",
            "text": "# EVP_KEYEXCH-X448 (man)\n\n## NAME\n\nEVPKEYEXCH-X25519, EVPKEYEXCH-X448 - X25519 and X448 Key Exchange algorithm support\n\n## DESCRIPTION\n\nKey exchange support for the X25519 and X448 key types.\n\n## Sections\n\n- **NAME**\n- **DESCRIPTION** (1 subsections)\n- **EXAMPLES**\n- **SEE ALSO**\n- **COPYRIGHT**\n\nUse structuredContent.sections for detailed options, examples, and full documentation.\n"
        }
    ],
    "structuredContent": {
        "command": "EVP_KEYEXCH-X448",
        "section": "",
        "mode": "man",
        "summary": "EVPKEYEXCH-X25519, EVPKEYEXCH-X448 - X25519 and X448 Key Exchange algorithm support",
        "synopsis": null,
        "tldr_summary": null,
        "tldr_examples": [],
        "tldr_source": null,
        "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"
            }
        ],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 2,
                "subsections": [
                    {
                        "name": "Key exchange parameters",
                        "lines": 3
                    }
                ]
            },
            {
                "name": "EXAMPLES",
                "lines": 4,
                "subsections": []
            },
            {
                "name": "SEE ALSO",
                "lines": 3,
                "subsections": []
            },
            {
                "name": "COPYRIGHT",
                "lines": 9,
                "subsections": []
            }
        ],
        "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": []
            }
        }
    }
}