{
    "mode": "man",
    "parameter": "OSSL_PROVIDER-default",
    "section": "7ssl",
    "url": "https://www.chedong.com/phpMan.php/man/OSSL_PROVIDER-default/7ssl/json",
    "generated": "2026-06-16T10:02:09Z",
    "sections": {
        "NAME": {
            "content": "OSSLPROVIDER-default - OpenSSL default provider\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "The OpenSSL default provider supplies the majority of OpenSSL's diverse algorithm\nimplementations. If an application doesn't specify anything else explicitly (e.g. in the\napplication or via config), then this is the provider that will be used as fallback: It is\nloaded automatically the first time that an algorithm is fetched from a provider or a\nfunction acting on providers is called and no other provider has been loaded yet.\n\nIf an attempt to load a provider has already been made (whether successful or not) then the\ndefault provider won't be loaded automatically. Therefore if the default provider is to be\nused in conjunction with other providers then it must be loaded explicitly. Automatic loading\nof the default provider only occurs a maximum of once; if the default provider is explicitly\nunloaded then the default provider will not be automatically loaded again.\n\nProperties\nThe implementations in this provider specifically have this property defined:\n\n\"provider=default\"\n\nIt may be used in a property query string with fetching functions such as EVPMDfetch(3) or\nEVPCIPHERfetch(3), as well as with other functions that take a property query string, such\nas EVPPKEYCTXnewfromname(3).\n\nIt isn't mandatory to query for this property, except to make sure to get implementations of\nthis provider and none other.\n\nSome implementations may define additional properties.  Exact information is listed below\n",
            "subsections": []
        },
        "OPERATIONS AND ALGORITHMS": {
            "content": "The OpenSSL default provider supports these operations and algorithms:\n\nHashing Algorithms / Message Digests\nSHA1, see EVPMD-SHA1(7)\nSHA2, see EVPMD-SHA2(7)\nSHA3, see EVPMD-SHA3(7)\nKECCAK-KMAC, see EVPMD-KECCAK-KMAC(7)\nSHAKE, see EVPMD-SHAKE(7)\nBLAKE2, see EVPMD-BLAKE2(7)\nSM3, see EVPMD-SM3(7)\nMD5, see EVPMD-MD5(7)\nMD5-SHA1, see EVPMD-MD5-SHA1(7)\n\nSymmetric Ciphers\nAES, see EVPCIPHER-AES(7)\nARIA, see EVPCIPHER-ARIA(7)\nCAMELLIA, see EVPCIPHER-CAMELLIA(7)\n3DES, see EVPCIPHER-DES(7)\nSEED, see EVPCIPHER-SEED(7)\nSM4, see EVPCIPHER-SM4(7)\nChaCha20, see EVPCIPHER-CHACHA(7)\nChaCha20-Poly1305, see EVPCIPHER-CHACHA(7)\n\nMessage Authentication Code (MAC)\nBLAKE2, see EVPMAC-BLAKE2(7)\nCMAC, see EVPMAC-CMAC(7)\nGMAC, see EVPMAC-GMAC(7)\nHMAC, see EVPMAC-HMAC(7)\nKMAC, see EVPMAC-KMAC(7)\nSIPHASH, see EVPMAC-Siphash(7)\nPOLY1305, see EVPMAC-Poly1305(7)\n\nKey Derivation Function (KDF)\nHKDF, see EVPKDF-HKDF(7)\nSSKDF, see EVPKDF-SS(7)\nPBKDF2, see EVPKDF-PBKDF2(7)\nPKCS12KDF, see EVPKDF-PKCS12KDF(7)\nSSHKDF, see EVPKDF-SSHKDF(7)\nTLS1-PRF, see EVPKDF-TLS1PRF(7)\nKBKDF, see EVPKDF-KB(7)\nX942KDF-ASN1, see EVPKDF-X942-ASN1(7)\nX942KDF-CONCAT, see EVPKDF-X942-CONCAT(7)\nX963KDF, see EVPKDF-X963(7)\nSCRYPT, see EVPKDF-SCRYPT(7)\nKRB5KDF, see EVPKDF-KRB5KDF(7)\n\nKey Exchange\nDH, see EVPKEYEXCH-DH(7)\nECDH, see EVPKEYEXCH-ECDH(7)\nX25519, see EVPKEYEXCH-X25519(7)\nX448, see EVPKEYEXCH-X448(7)\n\nAsymmetric Signature\nDSA, see EVPSIGNATURE-DSA(7)\nRSA, see EVPSIGNATURE-RSA(7)\nHMAC, see EVPSIGNATURE-HMAC(7)\nSIPHASH, see EVPSIGNATURE-Siphash(7)\nPOLY1305, see EVPSIGNATURE-Poly1305(7)\nCMAC, see EVPSIGNATURE-CMAC(7)\n\nAsymmetric Cipher\nRSA, see EVPASYMCIPHER-RSA(7)\nSM2, see EVPASYMCIPHER-SM2(7)\n\nAsymmetric Key Encapsulation\nRSA, see EVPKEM-RSA(7)\n\nAsymmetric Key Management\nDH, see EVPKEYMGMT-DH(7)\nDSA, see EVPKEYMGMT-DSA(7)\nRSA, see EVPKEYMGMT-RSA(7)\nEC, see EVPKEYMGMT-EC(7)\nX25519, see EVPKEYMGMT-X25519(7)\nX448, see EVPKEYMGMT-X448(7)\n\nAsymmetric Key Encoder\nThe default provider also includes all of the encoding algorithms present in the base\nprovider.  Some of these have the property \"fips=yes\", to allow them to be used together with\nthe FIPS provider.\n\nRSA, see OSSLENCODER-RSA(7)\nDH, see OSSLENCODER-DH(7)\nDSA, see OSSLENCODER-DSA(7)\nEC, see OSSLENCODER-EC(7)\nX25519, see OSSLENCODER-X25519(7)\nX448, see OSSLENCODER-X448(7)\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "openssl-core.h(7), openssl-coredispatch.h(7), provider(7), OSSLPROVIDER-base(7)\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "Copyright 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\n3.0.2                                       2026-06-02                OSSLPROVIDER-DEFAULT(7SSL)",
            "subsections": []
        }
    },
    "summary": "OSSLPROVIDER-default - OpenSSL default provider",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "openssl-core.h",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/openssl-core.h/7/json"
        },
        {
            "name": "openssl-coredispatch.h",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/openssl-coredispatch.h/7/json"
        },
        {
            "name": "provider",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/provider/7/json"
        },
        {
            "name": "OSSLPROVIDER-base",
            "section": "7",
            "url": "https://www.chedong.com/phpMan.php/man/OSSLPROVIDER-base/7/json"
        }
    ]
}