{
    "content": [
        {
            "type": "text",
            "text": "# EVP_KDF-X942-CONCAT(7ssl) (man)\n\n**Summary:** EVPKDF-X942-CONCAT - The X942 Concat EVPKDF implementation\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **DESCRIPTION** (3 lines) — 1 subsections\n  - Identity (7 lines)\n- **HISTORY** (2 lines)\n- **COPYRIGHT** (9 lines)\n\n## Full Content\n\n### NAME\n\nEVPKDF-X942-CONCAT - The X942 Concat EVPKDF implementation\n\n### DESCRIPTION\n\nThe EVPKDF-X942-CONCAT algorithm is identical to EVPKDF-X963. It is used for key agreement\nto derive a key using input such as a shared secret key and shared info.\n\n#### Identity\n\n\"X942KDFCONCAT\" is the name for this implementation; it can be used with the EVPKDFfetch()\nfunction.\n\nThis is an alias for \"X963KDF\".\n\nSee EVPKDF-X963(7) for a list of supported parameters and examples.\n\n### HISTORY\n\nThis functionality was added to OpenSSL 3.0.\n\n### COPYRIGHT\n\nCopyright 2020-2021 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                                        2026-04-07                    EVPKDF-X942-CONCAT(7SSL)\n\n"
        }
    ],
    "structuredContent": {
        "command": "EVP_KDF-X942-CONCAT",
        "section": "7ssl",
        "mode": "man",
        "summary": "EVPKDF-X942-CONCAT - The X942 Concat EVPKDF implementation",
        "synopsis": null,
        "tldr_summary": null,
        "tldr_examples": [],
        "tldr_source": null,
        "flags": [],
        "examples": [],
        "see_also": [],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 3,
                "subsections": [
                    {
                        "name": "Identity",
                        "lines": 7
                    }
                ]
            },
            {
                "name": "HISTORY",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "COPYRIGHT",
                "lines": 9,
                "subsections": []
            }
        ]
    }
}