{
    "mode": "man",
    "parameter": "EVP_SIGNATURE-RSA",
    "section": "7ssl",
    "url": "https://www.chedong.com/phpMan.php/man/EVP_SIGNATURE-RSA/7ssl/json",
    "generated": "2026-10-10T00:25:20Z",
    "sections": {
        "NAME": {
            "content": "EVPSIGNATURE-RSA - The EVPPKEY RSA signature implementation\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Support for computing RSA signatures.  See EVPPKEY-RSA(7) for information related to RSA\nkeys.\n",
            "subsections": [
                {
                    "name": "Signature Parameters",
                    "content": "The following signature parameters can be set using EVPPKEYCTXsetparams().  This may be\ncalled after EVPPKEYsigninit() or EVPPKEYverifyinit(), and before calling\nEVPPKEYsign() or EVPPKEYverify().\n\n\"digest\" (OSSLSIGNATUREPARAMDIGEST) <UTF8 string>\n\"properties\" (OSSLSIGNATUREPARAMPROPERTIES) <UTF8 string>\nThese common parameters are described in provider-signature(7).\n\n\"pad-mode\" (OSSLSIGNATUREPARAMPADMODE) <UTF8 string>\nThe type of padding to be used. Its value can be one of the following:\n\n\"none\" (OSSLPKEYRSAPADMODENONE)\n\"pkcs1\" (OSSLPKEYRSAPADMODEPKCSV15)\n\"x931\" (OSSLPKEYRSAPADMODEX931)\n\"pss\" (OSSLPKEYRSAPADMODEPSS)\n\"mgf1-digest\" (OSSLSIGNATUREPARAMMGF1DIGEST) <UTF8 string>\nThe digest algorithm name to use for the maskGenAlgorithm used by \"pss\" mode.\n\n\"mgf1-properties\" (OSSLSIGNATUREPARAMMGF1PROPERTIES) <UTF8 string>\nSets the name of the property query associated with the \"mgf1-digest\" algorithm.  NULL is\nused if this optional value is not set.\n\n\"saltlen\" (OSSLSIGNATUREPARAMPSSSALTLEN) <integer> or <UTF8 string>\nThe  \"pss\"  mode  minimum salt length. The value can either be an integer, a string value\nrepresenting a number or one of the following string values:\n\n\"digest\" (OSSLPKEYRSAPSSSALTLENDIGEST)\nUse the same length as the digest size.\n\n\"max\" (OSSLPKEYRSAPSSSALTLENMAX)\nUse the maximum salt length.\n\n\"auto\" (OSSLPKEYRSAPSSSALTLENAUTO)\nAuto detect the salt length.\n\nThe following signature parameters can be retrieved using EVPPKEYCTXgetparams().\n\n\"algorithm-id\" (OSSLSIGNATUREPARAMALGORITHMID) <octet string>\nThis common parameter is described in provider-signature(7).\n\n\"digest\" (OSSLSIGNATUREPARAMDIGEST) <UTF8 string>\n\"pad-mode\" (OSSLSIGNATUREPARAMPADMODE) <UTF8 string>\n\"mgf1-digest\" (OSSLSIGNATUREPARAMMGF1DIGEST) <UTF8 string>\n\"saltlen\" (OSSLSIGNATUREPARAMPSSSALTLEN) <integer> or <UTF8 string>\nThese parameters are as described above.\n"
                }
            ]
        },
        "SEE ALSO": {
            "content": "EVPPKEYCTXsetparams(3), EVPPKEYsign(3), EVPPKEYverify(3), provider-signature(7),\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "Copyright 2020-2022 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\n3.0.13                                       2026-07-29                      EVPSIGNATURE-RSA(7SSL)",
            "subsections": []
        }
    },
    "summary": "EVPSIGNATURE-RSA - The EVPPKEY RSA signature implementation",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "EVPPKEYCTXsetparams",
            "section": "3",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEYCTXsetparams/3/json"
        },
        {
            "name": "EVPPKEYsign",
            "section": "3",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEYsign/3/json"
        },
        {
            "name": "EVPPKEYverify",
            "section": "3",
            "url": "https://www.chedong.com/phpMan.php/man/EVPPKEYverify/3/json"
        },
        {
            "name": "provider-signature",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/provider-signature/7/json"
        }
    ]
}