{
    "content": [
        {
            "type": "text",
            "text": "# EVP_KDF-PBKDF1(7SSL) (man)\n\n**Summary:** EVPKDF-PBKDF1 - The PBKDF1 EVPKDF implementation\n\n## See Also\n\n- EVPKDF(3)\n- EVPKDFCTXnew(3)\n- EVPKDFCTXfree(3)\n- EVPKDFCTXsetparams(3)\n- EVPKDFderive(3)\n- EVPKDF(3)\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **DESCRIPTION** (5 lines) — 2 subsections\n  - Identity (3 lines)\n  - Supported parameters (11 lines)\n- **NOTES** (8 lines)\n- **CONFORMING TO** (2 lines)\n- **SEE ALSO** (3 lines)\n- **HISTORY** (2 lines)\n- **COPYRIGHT** (9 lines)\n\n## Full Content\n\n### NAME\n\nEVPKDF-PBKDF1 - The PBKDF1 EVPKDF implementation\n\n### DESCRIPTION\n\nSupport for computing the PBKDF1 password-based KDF through the EVPKDF API.\n\nThe EVPKDF-PBKDF1 algorithm implements the PBKDF1 password-based key derivation function, as\ndescribed in RFC 8018; it derives a key from a password using a salt and iteration count.\n\n#### Identity\n\n\"PBKDF1\" is the name for this implementation; it can be used with the EVPKDFfetch()\nfunction.\n\n#### Supported parameters\n\nThe supported parameters are:\n\n\"pass\" (OSSLKDFPARAMPASSWORD) <octet string>\n\"salt\" (OSSLKDFPARAMSALT) <octet string>\n\"iter\" (OSSLKDFPARAMITER) <unsigned integer>\nThis parameter has a default value of 0 and should be set.\n\n\"properties\" (OSSLKDFPARAMPROPERTIES) <UTF8 string>\n\"digest\" (OSSLKDFPARAMDIGEST) <UTF8 string>\nThese parameters work as described in \"PARAMETERS\" in EVPKDF(3).\n\n### NOTES\n\nA typical application of this algorithm is to derive keying material for an encryption\nalgorithm from a password in the \"pass\", a salt in \"salt\", and an iteration count.\n\nIncreasing the \"iter\" parameter slows down the algorithm which makes it harder for an\nattacker to perform a brute force attack using a large number of candidate passwords.\n\nNo assumption is made regarding the given password; it is simply treated as a byte sequence.\n\n### CONFORMING TO\n\nRFC 8018\n\n### SEE ALSO\n\nEVPKDF(3), EVPKDFCTXnew(3), EVPKDFCTXfree(3), EVPKDFCTXsetparams(3),\nEVPKDFderive(3), \"PARAMETERS\" in EVPKDF(3)\n\n### HISTORY\n\nThis functionality was added to OpenSSL 3.0.\n\n### COPYRIGHT\n\nCopyright 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-PBKDF1(7SSL)\n\n"
        }
    ],
    "structuredContent": {
        "command": "EVP_KDF-PBKDF1",
        "section": "7SSL",
        "mode": "man",
        "summary": "EVPKDF-PBKDF1 - The PBKDF1 EVPKDF implementation",
        "synopsis": null,
        "tldr_summary": null,
        "tldr_examples": [],
        "tldr_source": null,
        "flags": [],
        "examples": [],
        "see_also": [
            {
                "name": "EVPKDF",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDF/3/json"
            },
            {
                "name": "EVPKDFCTXnew",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDFCTXnew/3/json"
            },
            {
                "name": "EVPKDFCTXfree",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDFCTXfree/3/json"
            },
            {
                "name": "EVPKDFCTXsetparams",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDFCTXsetparams/3/json"
            },
            {
                "name": "EVPKDFderive",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDFderive/3/json"
            },
            {
                "name": "EVPKDF",
                "section": "3",
                "url": "https://www.chedong.com/phpMan.php/man/EVPKDF/3/json"
            }
        ],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 5,
                "subsections": [
                    {
                        "name": "Identity",
                        "lines": 3
                    },
                    {
                        "name": "Supported parameters",
                        "lines": 11
                    }
                ]
            },
            {
                "name": "NOTES",
                "lines": 8,
                "subsections": []
            },
            {
                "name": "CONFORMING TO",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "SEE ALSO",
                "lines": 3,
                "subsections": []
            },
            {
                "name": "HISTORY",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "COPYRIGHT",
                "lines": 9,
                "subsections": []
            }
        ]
    }
}