{
    "content": [
        {
            "type": "text",
            "text": "# ecparam(1ssl) (man)\n\n**Summary:** asn1parse, ca, ciphers, cms, crl, crl2pkcs7, dgst, dhparam, dsa, dsaparam, ec, ecparam, enc, engine, errstr, gendsa, genpkey, genrsa, info, kdf, mac, nseq, ocsp, passwd, pkcs12, pkcs7, pkcs8, pkey, pkeyparam, pkeyutl, prime, rand, rehash, req, rsa, rsautl, sclient, sserver, stime, sessid, smime, speed, spkac, srp, storeutl, ts, verify, version, x509 - OpenSSL application commands\n\n**Synopsis:** openssl cmd -help | [-option | -option arg] ... [arg] ...\n\n## Flags\n\n| Flag | Long | Arg | Description |\n|------|------|-----|-------------|\n| — | — | — | Print out a usage message for the subcommand. |\n\n## See Also\n\n- openssl(1)\n- openssl-asn1parse(1)\n- openssl-ca(1)\n- openssl-ciphers(1)\n- openssl-cms(1)\n- openssl-crl(1)\n- openssl-crl2pkcs7(1)\n- openssl-dgst(1)\n- openssl-dhparam(1)\n- openssl-dsa(1)\n- openssl-dsaparam(1)\n- openssl-ec(1)\n- openssl-ecparam(1)\n- openssl-enc(1)\n- openssl-engine(1)\n- openssl-errstr(1)\n- openssl-gendsa(1)\n- openssl-genpkey(1)\n- openssl-genrsa(1)\n- openssl-info(1)\n- openssl-kdf(1)\n- openssl-mac(1)\n- openssl-nseq(1)\n- openssl-ocsp(1)\n- openssl-passwd(1)\n- openssl-pkcs12(1)\n- openssl-pkcs7(1)\n- openssl-pkcs8(1)\n- openssl-pkey(1)\n- openssl-pkeyparam(1)\n- openssl-pkeyutl(1)\n- openssl-prime(1)\n- openssl-rand(1)\n- openssl-rehash(1)\n- openssl-req(1)\n- openssl-rsa(1)\n- openssl-rsautl(1)\n- openssl-sclient(1)\n- openssl-sserver(1)\n- openssl-stime(1)\n- openssl-sessid(1)\n- openssl-smime(1)\n- openssl-speed(1)\n- openssl-spkac(1)\n- openssl-srp(1)\n- openssl-storeutl(1)\n- openssl-ts(1)\n- openssl-verify(1)\n- openssl-version(1)\n- openssl-x509(1)\n\n## Section Outline\n\n- **NAME** (6 lines)\n- **SYNOPSIS** (2 lines)\n- **DESCRIPTION** (4 lines)\n- **OPTIONS** (2 lines) — 1 subsections\n  - -help (2 lines)\n- **SEE ALSO** (12 lines)\n- **HISTORY** (8 lines)\n- **COPYRIGHT** (9 lines)\n\n## Full Content\n\n### NAME\n\nasn1parse, ca, ciphers, cms, crl, crl2pkcs7, dgst, dhparam, dsa, dsaparam, ec, ecparam, enc,\nengine, errstr, gendsa, genpkey, genrsa, info, kdf, mac, nseq, ocsp, passwd, pkcs12, pkcs7,\npkcs8, pkey, pkeyparam, pkeyutl, prime, rand, rehash, req, rsa, rsautl, sclient, sserver,\nstime, sessid, smime, speed, spkac, srp, storeutl, ts, verify, version, x509 - OpenSSL\napplication commands\n\n### SYNOPSIS\n\nopenssl cmd -help | [-option | -option arg] ... [arg] ...\n\n### DESCRIPTION\n\nEvery cmd listed above is a (sub-)command of the openssl(1) application.  It has its own\ndetailed manual page at openssl-ccmmdd(1). For example, to view the manual page for the openssl\ndgst command, type \"man openssl-dgst\".\n\n### OPTIONS\n\nAmong others, every subcommand has a help option.\n\n#### -help\n\nPrint out a usage message for the subcommand.\n\n### SEE ALSO\n\nopenssl(1), openssl-asn1parse(1), openssl-ca(1), openssl-ciphers(1), openssl-cms(1),\nopenssl-crl(1), openssl-crl2pkcs7(1), openssl-dgst(1), openssl-dhparam(1), openssl-dsa(1),\nopenssl-dsaparam(1), openssl-ec(1), openssl-ecparam(1), openssl-enc(1), openssl-engine(1),\nopenssl-errstr(1), openssl-gendsa(1), openssl-genpkey(1), openssl-genrsa(1), openssl-info(1),\nopenssl-kdf(1), openssl-mac(1), openssl-nseq(1), openssl-ocsp(1), openssl-passwd(1),\nopenssl-pkcs12(1), openssl-pkcs7(1), openssl-pkcs8(1), openssl-pkey(1), openssl-pkeyparam(1),\nopenssl-pkeyutl(1), openssl-prime(1), openssl-rand(1), openssl-rehash(1), openssl-req(1),\nopenssl-rsa(1), openssl-rsautl(1), openssl-sclient(1), openssl-sserver(1),\nopenssl-stime(1), openssl-sessid(1), openssl-smime(1), openssl-speed(1), openssl-spkac(1),\nopenssl-srp(1), openssl-storeutl(1), openssl-ts(1), openssl-verify(1), openssl-version(1),\nopenssl-x509(1),\n\n### HISTORY\n\nInitially, the manual page entry for the \"openssl cmd\" command used to be available at\ncmd(1). Later, the alias openssl-ccmmdd(1) was introduced, which made it easier to group the\nopenssl commands using the apropos(1) command or the shell's tab completion.\n\nIn order to reduce cluttering of the global manual page namespace, the manual page entries\nwithout the 'openssl-' prefix have been deprecated in OpenSSL 3.0 and will be removed in\nOpenSSL 4.0.\n\n### COPYRIGHT\n\nCopyright 2019-2020 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                                        2026-04-07                           OPENSSL-CMDS(1SSL)\n\n"
        }
    ],
    "structuredContent": {
        "command": "ecparam",
        "section": "1ssl",
        "mode": "man",
        "summary": "asn1parse, ca, ciphers, cms, crl, crl2pkcs7, dgst, dhparam, dsa, dsaparam, ec, ecparam, enc, engine, errstr, gendsa, genpkey, genrsa, info, kdf, mac, nseq, ocsp, passwd, pkcs12, pkcs7, pkcs8, pkey, pkeyparam, pkeyutl, prime, rand, rehash, req, rsa, rsautl, sclient, sserver, stime, sessid, smime, speed, spkac, srp, storeutl, ts, verify, version, x509 - OpenSSL application commands",
        "synopsis": "openssl cmd -help | [-option | -option arg] ... [arg] ...",
        "flags": [
            {
                "flag": "",
                "long": null,
                "arg": null,
                "description": "Print out a usage message for the subcommand."
            }
        ],
        "examples": [],
        "see_also": [
            {
                "name": "openssl",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl/1/json"
            },
            {
                "name": "openssl-asn1parse",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-asn1parse/1/json"
            },
            {
                "name": "openssl-ca",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ca/1/json"
            },
            {
                "name": "openssl-ciphers",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ciphers/1/json"
            },
            {
                "name": "openssl-cms",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-cms/1/json"
            },
            {
                "name": "openssl-crl",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-crl/1/json"
            },
            {
                "name": "openssl-crl2pkcs7",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-crl2pkcs7/1/json"
            },
            {
                "name": "openssl-dgst",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-dgst/1/json"
            },
            {
                "name": "openssl-dhparam",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-dhparam/1/json"
            },
            {
                "name": "openssl-dsa",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-dsa/1/json"
            },
            {
                "name": "openssl-dsaparam",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-dsaparam/1/json"
            },
            {
                "name": "openssl-ec",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ec/1/json"
            },
            {
                "name": "openssl-ecparam",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ecparam/1/json"
            },
            {
                "name": "openssl-enc",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-enc/1/json"
            },
            {
                "name": "openssl-engine",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-engine/1/json"
            },
            {
                "name": "openssl-errstr",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-errstr/1/json"
            },
            {
                "name": "openssl-gendsa",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-gendsa/1/json"
            },
            {
                "name": "openssl-genpkey",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-genpkey/1/json"
            },
            {
                "name": "openssl-genrsa",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-genrsa/1/json"
            },
            {
                "name": "openssl-info",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-info/1/json"
            },
            {
                "name": "openssl-kdf",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-kdf/1/json"
            },
            {
                "name": "openssl-mac",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-mac/1/json"
            },
            {
                "name": "openssl-nseq",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-nseq/1/json"
            },
            {
                "name": "openssl-ocsp",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ocsp/1/json"
            },
            {
                "name": "openssl-passwd",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-passwd/1/json"
            },
            {
                "name": "openssl-pkcs12",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkcs12/1/json"
            },
            {
                "name": "openssl-pkcs7",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkcs7/1/json"
            },
            {
                "name": "openssl-pkcs8",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkcs8/1/json"
            },
            {
                "name": "openssl-pkey",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkey/1/json"
            },
            {
                "name": "openssl-pkeyparam",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkeyparam/1/json"
            },
            {
                "name": "openssl-pkeyutl",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-pkeyutl/1/json"
            },
            {
                "name": "openssl-prime",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-prime/1/json"
            },
            {
                "name": "openssl-rand",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-rand/1/json"
            },
            {
                "name": "openssl-rehash",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-rehash/1/json"
            },
            {
                "name": "openssl-req",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-req/1/json"
            },
            {
                "name": "openssl-rsa",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-rsa/1/json"
            },
            {
                "name": "openssl-rsautl",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-rsautl/1/json"
            },
            {
                "name": "openssl-sclient",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-sclient/1/json"
            },
            {
                "name": "openssl-sserver",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-sserver/1/json"
            },
            {
                "name": "openssl-stime",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-stime/1/json"
            },
            {
                "name": "openssl-sessid",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-sessid/1/json"
            },
            {
                "name": "openssl-smime",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-smime/1/json"
            },
            {
                "name": "openssl-speed",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-speed/1/json"
            },
            {
                "name": "openssl-spkac",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-spkac/1/json"
            },
            {
                "name": "openssl-srp",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-srp/1/json"
            },
            {
                "name": "openssl-storeutl",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-storeutl/1/json"
            },
            {
                "name": "openssl-ts",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-ts/1/json"
            },
            {
                "name": "openssl-verify",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-verify/1/json"
            },
            {
                "name": "openssl-version",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-version/1/json"
            },
            {
                "name": "openssl-x509",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/openssl-x509/1/json"
            }
        ],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 6,
                "subsections": []
            },
            {
                "name": "SYNOPSIS",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 4,
                "subsections": []
            },
            {
                "name": "OPTIONS",
                "lines": 2,
                "subsections": [
                    {
                        "name": "-help",
                        "lines": 2
                    }
                ]
            },
            {
                "name": "SEE ALSO",
                "lines": 12,
                "subsections": []
            },
            {
                "name": "HISTORY",
                "lines": 8,
                "subsections": []
            },
            {
                "name": "COPYRIGHT",
                "lines": 9,
                "subsections": []
            }
        ]
    }
}