/*

 * Copyright 2019-2026 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <string.h>

#include <stdio.h>

#include <openssl/opensslconf.h>

#include <openssl/core.h>

#include <openssl/core_dispatch.h>

#include <openssl/core_names.h>

#include <openssl/params.h>

#include "prov/bio.h"

#include "prov/provider_ctx.h"

#include "prov/providercommon.h"

#include "prov/implementations.h"

#include "prov/names.h"

#include "prov/provider_util.h"

#include "prov/seeding.h"

#include "internal/nelem.h"

/*

 * Forward declarations to ensure that interface functions are correctly

 * defined.

 */

static OSSL_FUNC_provider_gettable_params_fn deflt_gettable_params;

static OSSL_FUNC_provider_get_params_fn deflt_get_params;

static OSSL_FUNC_provider_query_operation_fn deflt_query;

#define ALGC(NAMES, FUNC, CHECK) { { NAMES, "provider=default", FUNC }, CHECK }

#define ALG(NAMES, FUNC) ALGC(NAMES, FUNC, NULL)

/* Parameters we provide to the core */

static const OSSL_PARAM deflt_param_types[] = {

    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),

    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),

    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),

    OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, NULL, 0),

    OSSL_PARAM_END

};

static const OSSL_PARAM *deflt_gettable_params(void *provctx)

{

    return deflt_param_types;

}

static int deflt_get_params(void *provctx, OSSL_PARAM params[])

{

    OSSL_PARAM *p;

    p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);

    if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Default Provider"))

        return 0;

    p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);

    if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))

        return 0;

    p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);

    if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))

        return 0;

    p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);

    if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))

        return 0;

    return 1;

}

/*

 * For the algorithm names, we use the following formula for our primary

 * names:

 *

 *     ALGNAME[VERSION?][-SUBNAME[VERSION?]?][-SIZE?][-MODE?]

 *

 *     VERSION is only present if there are multiple versions of

 *     an alg (MD2, MD4, MD5).  It may be omitted if there is only

 *     one version (if a subsequent version is released in the future,

 *     we can always change the canonical name, and add the old name

 *     as an alias).

 *

 *     SUBNAME may be present where we are combining multiple

 *     algorithms together, e.g. MD5-SHA1.

 *

 *     SIZE is only present if multiple versions of an algorithm exist

 *     with different sizes (e.g. AES-128-CBC, AES-256-CBC)

 *

 *     MODE is only present where applicable.

 *

 * We add diverse other names where applicable, such as the names that

 * NIST uses, or that are used for ASN.1 OBJECT IDENTIFIERs, or names

 * we have used historically.

 *

 * Algorithm names are case insensitive, but we use all caps in our "canonical"

 * names for consistency.

 */

static const OSSL_ALGORITHM deflt_digests[] = {

    /* Our primary name:NIST name[:our older names] */

    { PROV_NAMES_SHA1, "provider=default", ossl_sha1_functions },

    { PROV_NAMES_SHA2_224, "provider=default", ossl_sha224_functions },

    { PROV_NAMES_SHA2_256, "provider=default", ossl_sha256_functions },

    { PROV_NAMES_SHA2_256_192, "provider=default", ossl_sha256_192_functions },

    { PROV_NAMES_SHA2_384, "provider=default", ossl_sha384_functions },

    { PROV_NAMES_SHA2_512, "provider=default", ossl_sha512_functions },

    { PROV_NAMES_SHA2_512_224, "provider=default", ossl_sha512_224_functions },

    { PROV_NAMES_SHA2_512_256, "provider=default", ossl_sha512_256_functions },

    /* We agree with NIST here, so one name only */

    { PROV_NAMES_SHA3_224, "provider=default", ossl_sha3_224_functions },

    { PROV_NAMES_SHA3_256, "provider=default", ossl_sha3_256_functions },

    { PROV_NAMES_SHA3_384, "provider=default", ossl_sha3_384_functions },

    { PROV_NAMES_SHA3_512, "provider=default", ossl_sha3_512_functions },

    { PROV_NAMES_KECCAK_224, "provider=default", ossl_keccak_224_functions },

    { PROV_NAMES_KECCAK_256, "provider=default", ossl_keccak_256_functions },

    { PROV_NAMES_KECCAK_384, "provider=default", ossl_keccak_384_functions },

    { PROV_NAMES_KECCAK_512, "provider=default", ossl_keccak_512_functions },

    /*

     * KECCAK-KMAC-128 and KECCAK-KMAC-256 as hashes are mostly useful for

     * the KMAC-128 and KMAC-256.

     */

    { PROV_NAMES_KECCAK_KMAC_128, "provider=default",

        ossl_keccak_kmac_128_functions },

    { PROV_NAMES_KECCAK_KMAC_256, "provider=default",

        ossl_keccak_kmac_256_functions },

    /* Our primary name:NIST name */

    { PROV_NAMES_SHAKE_128, "provider=default", ossl_shake_128_functions },

    { PROV_NAMES_SHAKE_256, "provider=default", ossl_shake_256_functions },

#ifndef OPENSSL_NO_BLAKE2

    /*

     * https://blake2.net/ doesn't specify size variants,

     * but mentions that Bouncy Castle uses the names

     * BLAKE2b-160, BLAKE2b-256, BLAKE2b-384, and BLAKE2b-512

     * If we assume that "2b" and "2s" are versions, that pattern

     * fits with ours.  We also add our historical names.

     */

    { PROV_NAMES_BLAKE2S_256, "provider=default", ossl_blake2s256_functions },

    { PROV_NAMES_BLAKE2B_512, "provider=default", ossl_blake2b512_functions },

#endif /* OPENSSL_NO_BLAKE2 */

#ifndef OPENSSL_NO_SM3

    { PROV_NAMES_SM3, "provider=default", ossl_sm3_functions },

#endif /* OPENSSL_NO_SM3 */

#ifndef OPENSSL_NO_MD5

    { PROV_NAMES_MD5, "provider=default", ossl_md5_functions },

    { PROV_NAMES_MD5_SHA1, "provider=default", ossl_md5_sha1_functions },

#endif /* OPENSSL_NO_MD5 */

#ifndef OPENSSL_NO_RMD160

    { PROV_NAMES_RIPEMD_160, "provider=default", ossl_ripemd160_functions },

#endif /* OPENSSL_NO_RMD160 */

    { PROV_NAMES_NULL, "provider=default", ossl_nullmd_functions },

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM_CAPABLE deflt_ciphers[] = {

    ALG(PROV_NAMES_NULL, ossl_null_functions),

    ALG(PROV_NAMES_AES_256_ECB, ossl_aes256ecb_functions),

    ALG(PROV_NAMES_AES_192_ECB, ossl_aes192ecb_functions),

    ALG(PROV_NAMES_AES_128_ECB, ossl_aes128ecb_functions),

    ALG(PROV_NAMES_AES_256_CBC, ossl_aes256cbc_functions),

    ALG(PROV_NAMES_AES_192_CBC, ossl_aes192cbc_functions),

    ALG(PROV_NAMES_AES_128_CBC, ossl_aes128cbc_functions),

    ALG(PROV_NAMES_AES_128_CBC_CTS, ossl_aes128cbc_cts_functions),

    ALG(PROV_NAMES_AES_192_CBC_CTS, ossl_aes192cbc_cts_functions),

    ALG(PROV_NAMES_AES_256_CBC_CTS, ossl_aes256cbc_cts_functions),

    ALG(PROV_NAMES_AES_256_OFB, ossl_aes256ofb_functions),

    ALG(PROV_NAMES_AES_192_OFB, ossl_aes192ofb_functions),

    ALG(PROV_NAMES_AES_128_OFB, ossl_aes128ofb_functions),

    ALG(PROV_NAMES_AES_256_CFB, ossl_aes256cfb_functions),

    ALG(PROV_NAMES_AES_192_CFB, ossl_aes192cfb_functions),

    ALG(PROV_NAMES_AES_128_CFB, ossl_aes128cfb_functions),

    ALG(PROV_NAMES_AES_256_CFB1, ossl_aes256cfb1_functions),

    ALG(PROV_NAMES_AES_192_CFB1, ossl_aes192cfb1_functions),

    ALG(PROV_NAMES_AES_128_CFB1, ossl_aes128cfb1_functions),

    ALG(PROV_NAMES_AES_256_CFB8, ossl_aes256cfb8_functions),

    ALG(PROV_NAMES_AES_192_CFB8, ossl_aes192cfb8_functions),

    ALG(PROV_NAMES_AES_128_CFB8, ossl_aes128cfb8_functions),

    ALG(PROV_NAMES_AES_256_CTR, ossl_aes256ctr_functions),

    ALG(PROV_NAMES_AES_192_CTR, ossl_aes192ctr_functions),

    ALG(PROV_NAMES_AES_128_CTR, ossl_aes128ctr_functions),

    ALG(PROV_NAMES_AES_256_XTS, ossl_aes256xts_functions),

    ALG(PROV_NAMES_AES_128_XTS, ossl_aes128xts_functions),

#ifndef OPENSSL_NO_OCB

    ALG(PROV_NAMES_AES_256_OCB, ossl_aes256ocb_functions),

    ALG(PROV_NAMES_AES_192_OCB, ossl_aes192ocb_functions),

    ALG(PROV_NAMES_AES_128_OCB, ossl_aes128ocb_functions),

#endif /* OPENSSL_NO_OCB */

#ifndef OPENSSL_NO_SIV

    ALG(PROV_NAMES_AES_128_SIV, ossl_aes128siv_functions),

    ALG(PROV_NAMES_AES_192_SIV, ossl_aes192siv_functions),

    ALG(PROV_NAMES_AES_256_SIV, ossl_aes256siv_functions),

    ALG(PROV_NAMES_AES_128_GCM_SIV, ossl_aes128gcm_siv_functions),

    ALG(PROV_NAMES_AES_192_GCM_SIV, ossl_aes192gcm_siv_functions),

    ALG(PROV_NAMES_AES_256_GCM_SIV, ossl_aes256gcm_siv_functions),

#endif /* OPENSSL_NO_SIV */

    ALG(PROV_NAMES_AES_256_GCM, ossl_aes256gcm_functions),

    ALG(PROV_NAMES_AES_192_GCM, ossl_aes192gcm_functions),

    ALG(PROV_NAMES_AES_128_GCM, ossl_aes128gcm_functions),

    ALG(PROV_NAMES_AES_256_CCM, ossl_aes256ccm_functions),

    ALG(PROV_NAMES_AES_192_CCM, ossl_aes192ccm_functions),

    ALG(PROV_NAMES_AES_128_CCM, ossl_aes128ccm_functions),

    ALG(PROV_NAMES_AES_256_WRAP, ossl_aes256wrap_functions),

    ALG(PROV_NAMES_AES_192_WRAP, ossl_aes192wrap_functions),

    ALG(PROV_NAMES_AES_128_WRAP, ossl_aes128wrap_functions),

    ALG(PROV_NAMES_AES_256_WRAP_PAD, ossl_aes256wrappad_functions),

    ALG(PROV_NAMES_AES_192_WRAP_PAD, ossl_aes192wrappad_functions),

    ALG(PROV_NAMES_AES_128_WRAP_PAD, ossl_aes128wrappad_functions),

    ALG(PROV_NAMES_AES_256_WRAP_INV, ossl_aes256wrapinv_functions),

    ALG(PROV_NAMES_AES_192_WRAP_INV, ossl_aes192wrapinv_functions),

    ALG(PROV_NAMES_AES_128_WRAP_INV, ossl_aes128wrapinv_functions),

    ALG(PROV_NAMES_AES_256_WRAP_PAD_INV, ossl_aes256wrappadinv_functions),

    ALG(PROV_NAMES_AES_192_WRAP_PAD_INV, ossl_aes192wrappadinv_functions),

    ALG(PROV_NAMES_AES_128_WRAP_PAD_INV, ossl_aes128wrappadinv_functions),

    ALGC(PROV_NAMES_AES_128_CBC_HMAC_SHA1, ossl_aes128cbc_hmac_sha1_functions,

        ossl_cipher_capable_aes_cbc_hmac_sha1),

    ALGC(PROV_NAMES_AES_256_CBC_HMAC_SHA1, ossl_aes256cbc_hmac_sha1_functions,

        ossl_cipher_capable_aes_cbc_hmac_sha1),

    ALGC(PROV_NAMES_AES_128_CBC_HMAC_SHA256, ossl_aes128cbc_hmac_sha256_functions,

        ossl_cipher_capable_aes_cbc_hmac_sha256),

    ALGC(PROV_NAMES_AES_256_CBC_HMAC_SHA256, ossl_aes256cbc_hmac_sha256_functions,

        ossl_cipher_capable_aes_cbc_hmac_sha256),

#ifndef OPENSSL_NO_ARIA

    ALG(PROV_NAMES_ARIA_256_GCM, ossl_aria256gcm_functions),

    ALG(PROV_NAMES_ARIA_192_GCM, ossl_aria192gcm_functions),

    ALG(PROV_NAMES_ARIA_128_GCM, ossl_aria128gcm_functions),

    ALG(PROV_NAMES_ARIA_256_CCM, ossl_aria256ccm_functions),

    ALG(PROV_NAMES_ARIA_192_CCM, ossl_aria192ccm_functions),

    ALG(PROV_NAMES_ARIA_128_CCM, ossl_aria128ccm_functions),

    ALG(PROV_NAMES_ARIA_256_ECB, ossl_aria256ecb_functions),

    ALG(PROV_NAMES_ARIA_192_ECB, ossl_aria192ecb_functions),

    ALG(PROV_NAMES_ARIA_128_ECB, ossl_aria128ecb_functions),

    ALG(PROV_NAMES_ARIA_256_CBC, ossl_aria256cbc_functions),

    ALG(PROV_NAMES_ARIA_192_CBC, ossl_aria192cbc_functions),

    ALG(PROV_NAMES_ARIA_128_CBC, ossl_aria128cbc_functions),

    ALG(PROV_NAMES_ARIA_256_OFB, ossl_aria256ofb_functions),

    ALG(PROV_NAMES_ARIA_192_OFB, ossl_aria192ofb_functions),

    ALG(PROV_NAMES_ARIA_128_OFB, ossl_aria128ofb_functions),

    ALG(PROV_NAMES_ARIA_256_CFB, ossl_aria256cfb_functions),

    ALG(PROV_NAMES_ARIA_192_CFB, ossl_aria192cfb_functions),

    ALG(PROV_NAMES_ARIA_128_CFB, ossl_aria128cfb_functions),

    ALG(PROV_NAMES_ARIA_256_CFB1, ossl_aria256cfb1_functions),

    ALG(PROV_NAMES_ARIA_192_CFB1, ossl_aria192cfb1_functions),

    ALG(PROV_NAMES_ARIA_128_CFB1, ossl_aria128cfb1_functions),

    ALG(PROV_NAMES_ARIA_256_CFB8, ossl_aria256cfb8_functions),

    ALG(PROV_NAMES_ARIA_192_CFB8, ossl_aria192cfb8_functions),

    ALG(PROV_NAMES_ARIA_128_CFB8, ossl_aria128cfb8_functions),

    ALG(PROV_NAMES_ARIA_256_CTR, ossl_aria256ctr_functions),

    ALG(PROV_NAMES_ARIA_192_CTR, ossl_aria192ctr_functions),

    ALG(PROV_NAMES_ARIA_128_CTR, ossl_aria128ctr_functions),

#endif /* OPENSSL_NO_ARIA */

#ifndef OPENSSL_NO_CAMELLIA

    ALG(PROV_NAMES_CAMELLIA_256_ECB, ossl_camellia256ecb_functions),

    ALG(PROV_NAMES_CAMELLIA_192_ECB, ossl_camellia192ecb_functions),

    ALG(PROV_NAMES_CAMELLIA_128_ECB, ossl_camellia128ecb_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CBC, ossl_camellia256cbc_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CBC, ossl_camellia192cbc_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CBC, ossl_camellia128cbc_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CBC_CTS, ossl_camellia128cbc_cts_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CBC_CTS, ossl_camellia192cbc_cts_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CBC_CTS, ossl_camellia256cbc_cts_functions),

    ALG(PROV_NAMES_CAMELLIA_256_OFB, ossl_camellia256ofb_functions),

    ALG(PROV_NAMES_CAMELLIA_192_OFB, ossl_camellia192ofb_functions),

    ALG(PROV_NAMES_CAMELLIA_128_OFB, ossl_camellia128ofb_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CFB, ossl_camellia256cfb_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CFB, ossl_camellia192cfb_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CFB, ossl_camellia128cfb_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CFB1, ossl_camellia256cfb1_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CFB1, ossl_camellia192cfb1_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CFB1, ossl_camellia128cfb1_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CFB8, ossl_camellia256cfb8_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CFB8, ossl_camellia192cfb8_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CFB8, ossl_camellia128cfb8_functions),

    ALG(PROV_NAMES_CAMELLIA_256_CTR, ossl_camellia256ctr_functions),

    ALG(PROV_NAMES_CAMELLIA_192_CTR, ossl_camellia192ctr_functions),

    ALG(PROV_NAMES_CAMELLIA_128_CTR, ossl_camellia128ctr_functions),

#endif /* OPENSSL_NO_CAMELLIA */

#ifndef OPENSSL_NO_DES

    ALG(PROV_NAMES_DES_EDE3_ECB, ossl_tdes_ede3_ecb_functions),

    ALG(PROV_NAMES_DES_EDE3_CBC, ossl_tdes_ede3_cbc_functions),

    ALG(PROV_NAMES_DES_EDE3_OFB, ossl_tdes_ede3_ofb_functions),

    ALG(PROV_NAMES_DES_EDE3_CFB, ossl_tdes_ede3_cfb_functions),

    ALG(PROV_NAMES_DES_EDE3_CFB8, ossl_tdes_ede3_cfb8_functions),

    ALG(PROV_NAMES_DES_EDE3_CFB1, ossl_tdes_ede3_cfb1_functions),

    ALG(PROV_NAMES_DES3_WRAP, ossl_tdes_wrap_cbc_functions),

    ALG(PROV_NAMES_DES_EDE_ECB, ossl_tdes_ede2_ecb_functions),

    ALG(PROV_NAMES_DES_EDE_CBC, ossl_tdes_ede2_cbc_functions),

    ALG(PROV_NAMES_DES_EDE_OFB, ossl_tdes_ede2_ofb_functions),

    ALG(PROV_NAMES_DES_EDE_CFB, ossl_tdes_ede2_cfb_functions),

#endif /* OPENSSL_NO_DES */

#ifndef OPENSSL_NO_SM4

    ALG(PROV_NAMES_SM4_GCM, ossl_sm4128gcm_functions),

    ALG(PROV_NAMES_SM4_CCM, ossl_sm4128ccm_functions),

    ALG(PROV_NAMES_SM4_ECB, ossl_sm4128ecb_functions),

    ALG(PROV_NAMES_SM4_CBC, ossl_sm4128cbc_functions),

    ALG(PROV_NAMES_SM4_CTR, ossl_sm4128ctr_functions),

    ALG(PROV_NAMES_SM4_OFB, ossl_sm4128ofb128_functions),

    ALG(PROV_NAMES_SM4_CFB, ossl_sm4128cfb128_functions),

    ALG(PROV_NAMES_SM4_XTS, ossl_sm4128xts_functions),

#endif /* OPENSSL_NO_SM4 */

#ifndef OPENSSL_NO_CHACHA

    ALG(PROV_NAMES_ChaCha20, ossl_chacha20_functions),

#ifndef OPENSSL_NO_POLY1305

    ALG(PROV_NAMES_ChaCha20_Poly1305, ossl_chacha20_ossl_poly1305_functions),

#endif /* OPENSSL_NO_POLY1305 */

#endif /* OPENSSL_NO_CHACHA */

    { { NULL, NULL, NULL }, NULL }

};

static OSSL_ALGORITHM exported_ciphers[OSSL_NELEM(deflt_ciphers)];

static const OSSL_ALGORITHM deflt_macs[] = {

#ifndef OPENSSL_NO_BLAKE2

    { PROV_NAMES_BLAKE2BMAC, "provider=default", ossl_blake2bmac_functions },

    { PROV_NAMES_BLAKE2SMAC, "provider=default", ossl_blake2smac_functions },

#endif

#ifndef OPENSSL_NO_CMAC

    { PROV_NAMES_CMAC, "provider=default", ossl_cmac_functions },

#endif

    { PROV_NAMES_GMAC, "provider=default", ossl_gmac_functions },

    { PROV_NAMES_HMAC, "provider=default", ossl_hmac_functions },

    { PROV_NAMES_KMAC_128, "provider=default", ossl_kmac128_functions },

    { PROV_NAMES_KMAC_256, "provider=default", ossl_kmac256_functions },

#ifndef OPENSSL_NO_SIPHASH

    { PROV_NAMES_SIPHASH, "provider=default", ossl_siphash_functions },

#endif

#ifndef OPENSSL_NO_POLY1305

    { PROV_NAMES_POLY1305, "provider=default", ossl_poly1305_functions },

#endif

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_kdfs[] = {

    { PROV_NAMES_HKDF, "provider=default", ossl_kdf_hkdf_functions },

    { PROV_NAMES_TLS1_3_KDF, "provider=default",

        ossl_kdf_tls1_3_kdf_functions },

    { PROV_NAMES_SSKDF, "provider=default", ossl_kdf_sskdf_functions },

    { PROV_NAMES_PBKDF2, "provider=default", ossl_kdf_pbkdf2_functions },

    { PROV_NAMES_PKCS12KDF, "provider=default", ossl_kdf_pkcs12_functions },

    { PROV_NAMES_SSHKDF, "provider=default", ossl_kdf_sshkdf_functions },

    { PROV_NAMES_X963KDF, "provider=default", ossl_kdf_x963_kdf_functions },

    { PROV_NAMES_TLS1_PRF, "provider=default", ossl_kdf_tls1_prf_functions },

    { PROV_NAMES_KBKDF, "provider=default", ossl_kdf_kbkdf_functions },

    { PROV_NAMES_X942KDF_ASN1, "provider=default", ossl_kdf_x942_kdf_functions },

#ifndef OPENSSL_NO_SCRYPT

    { PROV_NAMES_SCRYPT, "provider=default", ossl_kdf_scrypt_functions },

#endif

    { PROV_NAMES_KRB5KDF, "provider=default", ossl_kdf_krb5kdf_functions },

    { PROV_NAMES_HMAC_DRBG_KDF, "provider=default",

        ossl_kdf_hmac_drbg_functions },

#ifndef OPENSSL_NO_ARGON2

    { PROV_NAMES_ARGON2I, "provider=default", ossl_kdf_argon2i_functions },

    { PROV_NAMES_ARGON2D, "provider=default", ossl_kdf_argon2d_functions },

    { PROV_NAMES_ARGON2ID, "provider=default", ossl_kdf_argon2id_functions },

#endif

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_keyexch[] = {

#ifndef OPENSSL_NO_DH

    { PROV_NAMES_DH, "provider=default", ossl_dh_keyexch_functions },

#endif

#ifndef OPENSSL_NO_EC

    { PROV_NAMES_ECDH, "provider=default", ossl_ecdh_keyexch_functions },

#ifndef OPENSSL_NO_ECX

    { PROV_NAMES_X25519, "provider=default", ossl_x25519_keyexch_functions },

    { PROV_NAMES_X448, "provider=default", ossl_x448_keyexch_functions },

#endif

#endif

    { PROV_NAMES_TLS1_PRF, "provider=default", ossl_kdf_tls1_prf_keyexch_functions },

    { PROV_NAMES_HKDF, "provider=default", ossl_kdf_hkdf_keyexch_functions },

#ifndef OPENSSL_NO_SCRYPT

    { PROV_NAMES_SCRYPT, "provider=default",

        ossl_kdf_scrypt_keyexch_functions },

#endif

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_rands[] = {

    { PROV_NAMES_CTR_DRBG, "provider=default", ossl_drbg_ctr_functions },

    { PROV_NAMES_HASH_DRBG, "provider=default", ossl_drbg_hash_functions },

    { PROV_NAMES_HMAC_DRBG, "provider=default", ossl_drbg_ossl_hmac_functions },

    { PROV_NAMES_SEED_SRC, "provider=default", ossl_seed_src_functions },

#ifndef OPENSSL_NO_JITTER

    { PROV_NAMES_JITTER, "provider=default", ossl_jitter_functions },

#endif

    { PROV_NAMES_TEST_RAND, "provider=default", ossl_test_rng_functions },

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_signature[] = {

#ifndef OPENSSL_NO_DSA

    { PROV_NAMES_DSA, "provider=default", ossl_dsa_signature_functions },

    { PROV_NAMES_DSA_SHA1, "provider=default", ossl_dsa_sha1_signature_functions },

    { PROV_NAMES_DSA_SHA224, "provider=default", ossl_dsa_sha224_signature_functions },

    { PROV_NAMES_DSA_SHA256, "provider=default", ossl_dsa_sha256_signature_functions },

    { PROV_NAMES_DSA_SHA384, "provider=default", ossl_dsa_sha384_signature_functions },

    { PROV_NAMES_DSA_SHA512, "provider=default", ossl_dsa_sha512_signature_functions },

    { PROV_NAMES_DSA_SHA3_224, "provider=default", ossl_dsa_sha3_224_signature_functions },

    { PROV_NAMES_DSA_SHA3_256, "provider=default", ossl_dsa_sha3_256_signature_functions },

    { PROV_NAMES_DSA_SHA3_384, "provider=default", ossl_dsa_sha3_384_signature_functions },

    { PROV_NAMES_DSA_SHA3_512, "provider=default", ossl_dsa_sha3_512_signature_functions },

#endif

    { PROV_NAMES_RSA, "provider=default", ossl_rsa_signature_functions },

#if !defined(OPENSSL_NO_RMD160) && !defined(FIPS_MODULE)

    { PROV_NAMES_RSA_RIPEMD160, "provider=default", ossl_rsa_ripemd160_signature_functions },

#endif

    { PROV_NAMES_RSA_SHA1, "provider=default", ossl_rsa_sha1_signature_functions },

    { PROV_NAMES_RSA_SHA224, "provider=default", ossl_rsa_sha224_signature_functions },

    { PROV_NAMES_RSA_SHA256, "provider=default", ossl_rsa_sha256_signature_functions },

    { PROV_NAMES_RSA_SHA384, "provider=default", ossl_rsa_sha384_signature_functions },

    { PROV_NAMES_RSA_SHA512, "provider=default", ossl_rsa_sha512_signature_functions },

    { PROV_NAMES_RSA_SHA512_224, "provider=default", ossl_rsa_sha512_224_signature_functions },

    { PROV_NAMES_RSA_SHA512_256, "provider=default", ossl_rsa_sha512_256_signature_functions },

    { PROV_NAMES_RSA_SHA3_224, "provider=default", ossl_rsa_sha3_224_signature_functions },

    { PROV_NAMES_RSA_SHA3_256, "provider=default", ossl_rsa_sha3_256_signature_functions },

    { PROV_NAMES_RSA_SHA3_384, "provider=default", ossl_rsa_sha3_384_signature_functions },

    { PROV_NAMES_RSA_SHA3_512, "provider=default", ossl_rsa_sha3_512_signature_functions },

#ifndef OPENSSL_NO_SM3

    { PROV_NAMES_RSA_SM3, "provider=default", ossl_rsa_sm3_signature_functions },

#endif

#ifndef OPENSSL_NO_EC

#ifndef OPENSSL_NO_ECX

    { PROV_NAMES_ED25519, "provider=default", ossl_ed25519_signature_functions },

    { PROV_NAMES_ED25519ph, "provider=default", ossl_ed25519ph_signature_functions },

    { PROV_NAMES_ED25519ctx, "provider=default", ossl_ed25519ctx_signature_functions },

    { PROV_NAMES_ED448, "provider=default", ossl_ed448_signature_functions },

    { PROV_NAMES_ED448ph, "provider=default", ossl_ed448ph_signature_functions },

#endif

    { PROV_NAMES_ECDSA, "provider=default", ossl_ecdsa_signature_functions },

    { PROV_NAMES_ECDSA_SHA1, "provider=default", ossl_ecdsa_sha1_signature_functions },

    { PROV_NAMES_ECDSA_SHA224, "provider=default", ossl_ecdsa_sha224_signature_functions },

    { PROV_NAMES_ECDSA_SHA256, "provider=default", ossl_ecdsa_sha256_signature_functions },

    { PROV_NAMES_ECDSA_SHA384, "provider=default", ossl_ecdsa_sha384_signature_functions },

    { PROV_NAMES_ECDSA_SHA512, "provider=default", ossl_ecdsa_sha512_signature_functions },

    { PROV_NAMES_ECDSA_SHA3_224, "provider=default", ossl_ecdsa_sha3_224_signature_functions },

    { PROV_NAMES_ECDSA_SHA3_256, "provider=default", ossl_ecdsa_sha3_256_signature_functions },

    { PROV_NAMES_ECDSA_SHA3_384, "provider=default", ossl_ecdsa_sha3_384_signature_functions },

    { PROV_NAMES_ECDSA_SHA3_512, "provider=default", ossl_ecdsa_sha3_512_signature_functions },

#ifndef OPENSSL_NO_SM2

    { PROV_NAMES_SM2, "provider=default", ossl_sm2_signature_functions },

#endif

#endif

#ifndef OPENSSL_NO_ML_DSA

    { PROV_NAMES_ML_DSA_44, "provider=default", ossl_ml_dsa_44_signature_functions },

    { PROV_NAMES_ML_DSA_65, "provider=default", ossl_ml_dsa_65_signature_functions },

    { PROV_NAMES_ML_DSA_87, "provider=default", ossl_ml_dsa_87_signature_functions },

#endif

    { PROV_NAMES_HMAC, "provider=default", ossl_mac_legacy_hmac_signature_functions },

#ifndef OPENSSL_NO_SIPHASH

    { PROV_NAMES_SIPHASH, "provider=default",

        ossl_mac_legacy_siphash_signature_functions },

#endif

#ifndef OPENSSL_NO_POLY1305

    { PROV_NAMES_POLY1305, "provider=default",

        ossl_mac_legacy_poly1305_signature_functions },

#endif

#ifndef OPENSSL_NO_CMAC

    { PROV_NAMES_CMAC, "provider=default", ossl_mac_legacy_cmac_signature_functions },

#endif

#ifndef OPENSSL_NO_SLH_DSA

    { PROV_NAMES_SLH_DSA_SHA2_128S, "provider=default",

        ossl_slh_dsa_sha2_128s_signature_functions, PROV_DESCS_SLH_DSA_SHA2_128S },

    { PROV_NAMES_SLH_DSA_SHA2_128F, "provider=default",

        ossl_slh_dsa_sha2_128f_signature_functions, PROV_DESCS_SLH_DSA_SHA2_128F },

    { PROV_NAMES_SLH_DSA_SHA2_192S, "provider=default",

        ossl_slh_dsa_sha2_192s_signature_functions, PROV_DESCS_SLH_DSA_SHA2_192S },

    { PROV_NAMES_SLH_DSA_SHA2_192F, "provider=default",

        ossl_slh_dsa_sha2_192f_signature_functions, PROV_DESCS_SLH_DSA_SHA2_192F },

    { PROV_NAMES_SLH_DSA_SHA2_256S, "provider=default",

        ossl_slh_dsa_sha2_256s_signature_functions, PROV_DESCS_SLH_DSA_SHA2_256S },

    { PROV_NAMES_SLH_DSA_SHA2_256F, "provider=default",

        ossl_slh_dsa_sha2_256f_signature_functions, PROV_DESCS_SLH_DSA_SHA2_256F },

    { PROV_NAMES_SLH_DSA_SHAKE_128S, "provider=default",

        ossl_slh_dsa_shake_128s_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_128S },

    { PROV_NAMES_SLH_DSA_SHAKE_128F, "provider=default",

        ossl_slh_dsa_shake_128f_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_128F },

    { PROV_NAMES_SLH_DSA_SHAKE_192S, "provider=default",

        ossl_slh_dsa_shake_192s_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_192S },

    { PROV_NAMES_SLH_DSA_SHAKE_192F, "provider=default",

        ossl_slh_dsa_shake_192f_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_192F },

    { PROV_NAMES_SLH_DSA_SHAKE_256S, "provider=default",

        ossl_slh_dsa_shake_256s_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_256S },

    { PROV_NAMES_SLH_DSA_SHAKE_256F, "provider=default",

        ossl_slh_dsa_shake_256f_signature_functions, PROV_DESCS_SLH_DSA_SHAKE_256F },

#endif /* OPENSSL_NO_SLH_DSA */

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_asym_cipher[] = {

    { PROV_NAMES_RSA, "provider=default", ossl_rsa_asym_cipher_functions },

#ifndef OPENSSL_NO_SM2

    { PROV_NAMES_SM2, "provider=default", ossl_sm2_asym_cipher_functions },

#endif

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_asym_kem[] = {

    { PROV_NAMES_RSA, "provider=default", ossl_rsa_asym_kem_functions },

#ifndef OPENSSL_NO_EC

#ifndef OPENSSL_NO_ECX

    { PROV_NAMES_X25519, "provider=default", ossl_ecx_asym_kem_functions },

    { PROV_NAMES_X448, "provider=default", ossl_ecx_asym_kem_functions },

#endif

    { PROV_NAMES_EC, "provider=default", ossl_ec_asym_kem_functions },

#endif

#ifndef OPENSSL_NO_ML_KEM

    { PROV_NAMES_ML_KEM_512, "provider=default", ossl_ml_kem_asym_kem_functions },

    { PROV_NAMES_ML_KEM_768, "provider=default", ossl_ml_kem_asym_kem_functions },

    { PROV_NAMES_ML_KEM_1024, "provider=default", ossl_ml_kem_asym_kem_functions },

#if !defined(OPENSSL_NO_ECX)

    { "X25519MLKEM768", "provider=default", ossl_mlx_kem_asym_kem_functions },

    { "X448MLKEM1024", "provider=default", ossl_mlx_kem_asym_kem_functions },

#endif

#if !defined(OPENSSL_NO_EC)

    { "SecP256r1MLKEM768", "provider=default", ossl_mlx_kem_asym_kem_functions },

    { "SecP384r1MLKEM1024", "provider=default", ossl_mlx_kem_asym_kem_functions },

#endif

#endif

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_keymgmt[] = {

#ifndef OPENSSL_NO_DH

    { PROV_NAMES_DH, "provider=default", ossl_dh_keymgmt_functions,

        PROV_DESCS_DH },

    { PROV_NAMES_DHX, "provider=default", ossl_dhx_keymgmt_functions,

        PROV_DESCS_DHX },

#endif

#ifndef OPENSSL_NO_DSA

    { PROV_NAMES_DSA, "provider=default", ossl_dsa_keymgmt_functions,

        PROV_DESCS_DSA },

#endif

    { PROV_NAMES_RSA, "provider=default", ossl_rsa_keymgmt_functions,

        PROV_DESCS_RSA },

    { PROV_NAMES_RSA_PSS, "provider=default", ossl_rsapss_keymgmt_functions,

        PROV_DESCS_RSA_PSS },

#ifndef OPENSSL_NO_EC

    { PROV_NAMES_EC, "provider=default", ossl_ec_keymgmt_functions,

        PROV_DESCS_EC },

#ifndef OPENSSL_NO_ECX

    { PROV_NAMES_X25519, "provider=default", ossl_x25519_keymgmt_functions,

        PROV_DESCS_X25519 },

    { PROV_NAMES_X448, "provider=default", ossl_x448_keymgmt_functions,

        PROV_DESCS_X448 },

    { PROV_NAMES_ED25519, "provider=default", ossl_ed25519_keymgmt_functions,

        PROV_DESCS_ED25519 },

    { PROV_NAMES_ED448, "provider=default", ossl_ed448_keymgmt_functions,

        PROV_DESCS_ED448 },

#endif

#endif

#ifndef OPENSSL_NO_ML_DSA

    { PROV_NAMES_ML_DSA_44, "provider=default", ossl_ml_dsa_44_keymgmt_functions,

        PROV_DESCS_ML_DSA_44 },

    { PROV_NAMES_ML_DSA_65, "provider=default", ossl_ml_dsa_65_keymgmt_functions,

        PROV_DESCS_ML_DSA_65 },

    { PROV_NAMES_ML_DSA_87, "provider=default", ossl_ml_dsa_87_keymgmt_functions,

        PROV_DESCS_ML_DSA_87 },

#endif /* OPENSSL_NO_ML_DSA */

    { PROV_NAMES_TLS1_PRF, "provider=default", ossl_kdf_keymgmt_functions,

        PROV_DESCS_TLS1_PRF_SIGN },

    { PROV_NAMES_HKDF, "provider=default", ossl_kdf_keymgmt_functions,

        PROV_DESCS_HKDF_SIGN },

#ifndef OPENSSL_NO_SCRYPT

    { PROV_NAMES_SCRYPT, "provider=default", ossl_kdf_keymgmt_functions,

        PROV_DESCS_SCRYPT_SIGN },

#endif

    { PROV_NAMES_HMAC, "provider=default", ossl_mac_legacy_keymgmt_functions,

        PROV_DESCS_HMAC_SIGN },

#ifndef OPENSSL_NO_SIPHASH

    { PROV_NAMES_SIPHASH, "provider=default", ossl_mac_legacy_keymgmt_functions,

        PROV_DESCS_SIPHASH_SIGN },

#endif

#ifndef OPENSSL_NO_POLY1305

    { PROV_NAMES_POLY1305, "provider=default", ossl_mac_legacy_keymgmt_functions,

        PROV_DESCS_POLY1305_SIGN },

#endif

#ifndef OPENSSL_NO_CMAC

    { PROV_NAMES_CMAC, "provider=default", ossl_cmac_legacy_keymgmt_functions,

        PROV_DESCS_CMAC_SIGN },

#endif

#ifndef OPENSSL_NO_SM2

    { PROV_NAMES_SM2, "provider=default", ossl_sm2_keymgmt_functions,

        PROV_DESCS_SM2 },

#endif

#ifndef OPENSSL_NO_ML_KEM

    { PROV_NAMES_ML_KEM_512, "provider=default", ossl_ml_kem_512_keymgmt_functions,

        PROV_DESCS_ML_KEM_512 },

    { PROV_NAMES_ML_KEM_768, "provider=default", ossl_ml_kem_768_keymgmt_functions,

        PROV_DESCS_ML_KEM_768 },

    { PROV_NAMES_ML_KEM_1024, "provider=default", ossl_ml_kem_1024_keymgmt_functions,

        PROV_DESCS_ML_KEM_1024 },

#if !defined(OPENSSL_NO_ECX)

    { PROV_NAMES_X25519MLKEM768, "provider=default", ossl_mlx_x25519_kem_kmgmt_functions,

        PROV_DESCS_X25519MLKEM768 },

    { PROV_NAMES_X448MLKEM1024, "provider=default", ossl_mlx_x448_kem_kmgmt_functions,

        PROV_DESCS_X448MLKEM1024 },

#endif

#if !defined(OPENSSL_NO_EC)

    { PROV_NAMES_SecP256r1MLKEM768, "provider=default", ossl_mlx_p256_kem_kmgmt_functions,

        PROV_DESCS_SecP256r1MLKEM768 },

    { PROV_NAMES_SecP384r1MLKEM1024, "provider=default", ossl_mlx_p384_kem_kmgmt_functions,

        PROV_DESCS_SecP384r1MLKEM1024 },

#endif

#endif

#ifndef OPENSSL_NO_SLH_DSA

    { PROV_NAMES_SLH_DSA_SHA2_128S, "provider=default", ossl_slh_dsa_sha2_128s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_128S },

    { PROV_NAMES_SLH_DSA_SHA2_128F, "provider=default", ossl_slh_dsa_sha2_128f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_128F },

    { PROV_NAMES_SLH_DSA_SHA2_192S, "provider=default", ossl_slh_dsa_sha2_192s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_192S },

    { PROV_NAMES_SLH_DSA_SHA2_192F, "provider=default", ossl_slh_dsa_sha2_192f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_192F },

    { PROV_NAMES_SLH_DSA_SHA2_256S, "provider=default", ossl_slh_dsa_sha2_256s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_256S },

    { PROV_NAMES_SLH_DSA_SHA2_256F, "provider=default", ossl_slh_dsa_sha2_256f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHA2_256F },

    { PROV_NAMES_SLH_DSA_SHAKE_128S, "provider=default", ossl_slh_dsa_shake_128s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_128S },

    { PROV_NAMES_SLH_DSA_SHAKE_128F, "provider=default", ossl_slh_dsa_shake_128f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_128F },

    { PROV_NAMES_SLH_DSA_SHAKE_192S, "provider=default", ossl_slh_dsa_shake_192s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_192S },

    { PROV_NAMES_SLH_DSA_SHAKE_192F, "provider=default", ossl_slh_dsa_shake_192f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_192F },

    { PROV_NAMES_SLH_DSA_SHAKE_256S, "provider=default", ossl_slh_dsa_shake_256s_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_256S },

    { PROV_NAMES_SLH_DSA_SHAKE_256F, "provider=default", ossl_slh_dsa_shake_256f_keymgmt_functions,

        PROV_DESCS_SLH_DSA_SHAKE_256F },

#endif /* OPENSSL_NO_SLH_DSA */

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_skeymgmt[] = {

    { PROV_NAMES_AES, "provider=default", ossl_aes_skeymgmt_functions,

        PROV_DESCS_AES },

    { PROV_NAMES_GENERIC, "provider=default", ossl_generic_skeymgmt_functions,

        PROV_DESCS_GENERIC },

    { NULL, NULL, NULL }

};

static const OSSL_ALGORITHM deflt_encoder[] = {

#define ENCODER_PROVIDER "default"

#include "encoders.inc"

    { NULL, NULL, NULL }

#undef ENCODER_PROVIDER

};

static const OSSL_ALGORITHM deflt_decoder[] = {

#define DECODER_PROVIDER "default"

#include "decoders.inc"

    { NULL, NULL, NULL }

#undef DECODER_PROVIDER

};

static const OSSL_ALGORITHM deflt_store[] = {

#define STORE(name, _fips, func_table) \

    { name, "provider=default,fips=" _fips, (func_table) },

#include "stores.inc"

    { NULL, NULL, NULL }

#undef STORE

};

static const OSSL_ALGORITHM *deflt_query(void *provctx, int operation_id,

    int *no_cache)

{

    *no_cache = 0;

    switch (operation_id) {

    case OSSL_OP_DIGEST:

        return deflt_digests;

    case OSSL_OP_CIPHER:

        return exported_ciphers;

    case OSSL_OP_MAC:

        return deflt_macs;

    case OSSL_OP_KDF:

        return deflt_kdfs;

    case OSSL_OP_RAND:

        return deflt_rands;

    case OSSL_OP_KEYMGMT:

        return deflt_keymgmt;

    case OSSL_OP_KEYEXCH:

        return deflt_keyexch;

    case OSSL_OP_SIGNATURE:

        return deflt_signature;

    case OSSL_OP_ASYM_CIPHER:

        return deflt_asym_cipher;

    case OSSL_OP_KEM:

        return deflt_asym_kem;

    case OSSL_OP_ENCODER:

        return deflt_encoder;

    case OSSL_OP_DECODER:

        return deflt_decoder;

    case OSSL_OP_STORE:

        return deflt_store;

    case OSSL_OP_SKEYMGMT:

        return deflt_skeymgmt;

    }

    return NULL;

}

static void deflt_teardown(void *provctx)

{

    BIO_meth_free(ossl_prov_ctx_get0_core_bio_method(provctx));

    ossl_prov_ctx_free(provctx);

}

/* Functions we provide to the core */

static const OSSL_DISPATCH deflt_dispatch_table[] = {

    { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))deflt_teardown },

    { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))deflt_gettable_params },

    { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))deflt_get_params },

    { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))deflt_query },

    { OSSL_FUNC_PROVIDER_GET_CAPABILITIES,

        (void (*)(void))ossl_prov_get_capabilities },

    OSSL_DISPATCH_END

};

OSSL_provider_init_fn ossl_default_provider_init;

int ossl_default_provider_init(const OSSL_CORE_HANDLE *handle,

    const OSSL_DISPATCH *in,

    const OSSL_DISPATCH **out,

    void **provctx)

{

    OSSL_FUNC_core_get_libctx_fn *c_get_libctx = NULL;

    OSSL_FUNC_core_get_params_fn *c_get_params = NULL;

    BIO_METHOD *corebiometh;

    if (!ossl_prov_bio_from_dispatch(in)

        || !ossl_prov_seeding_from_dispatch(in))

        return 0;

    for (; in->function_id != 0; in++) {

        switch (in->function_id) {

        case OSSL_FUNC_CORE_GET_PARAMS:

            c_get_params = OSSL_FUNC_core_get_params(in);

            break;

        case OSSL_FUNC_CORE_GET_LIBCTX:

            c_get_libctx = OSSL_FUNC_core_get_libctx(in);

            break;

        default:

            /* Just ignore anything we don't understand */

            break;

        }

    }

    if (c_get_libctx == NULL)

        return 0;

    /*

     * We want to make sure that all calls from this provider that requires

     * a library context use the same context as the one used to call our

     * functions.  We do that by passing it along in the provider context.

     *

     * This only works for built-in providers.  Most providers should

     * create their own library context.

     */

    if ((*provctx = ossl_prov_ctx_new()) == NULL

        || (corebiometh = ossl_bio_prov_init_bio_method()) == NULL) {

        ossl_prov_ctx_free(*provctx);

        *provctx = NULL;

        return 0;

    }

    ossl_prov_ctx_set0_libctx(*provctx,

        (OSSL_LIB_CTX *)c_get_libctx(handle));

    ossl_prov_ctx_set0_handle(*provctx, handle);

    ossl_prov_ctx_set0_core_bio_method(*provctx, corebiometh);

    ossl_prov_ctx_set0_core_get_params(*provctx, c_get_params);

    *out = deflt_dispatch_table;

    ossl_prov_cache_exported_algorithms(deflt_ciphers, exported_ciphers);

    return 1;

}