providers/defltprov.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11 #include <stdio.h>
  12 #include <openssl/opensslconf.h>
  13 #include <openssl/core.h>
  14 #include <openssl/core_numbers.h>
  15 #include <openssl/core_names.h>
  16 #include <openssl/params.h>
  17 #include "prov/implementations.h"
  18
  19 /* Functions provided by the core */
  20 static OSSL_core_gettable_params_fn *c_gettable_params = NULL;
  21 static OSSL_core_get_params_fn *c_get_params = NULL;
  22
  23 /* Parameters we provide to the core */
  24 static const OSSL_PARAM deflt_param_types[] = {
  25     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
  26     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
  27     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
  28     OSSL_PARAM_END
  29 };
  30
  31 static const OSSL_PARAM *deflt_gettable_params(const OSSL_PROVIDER *prov)
  32 {
  33     return deflt_param_types;
  34 }
  35
  36 static int deflt_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
  37 {
  38     OSSL_PARAM *p;
  39
  40     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
  41     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Default Provider"))
  42         return 0;
  43     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
  44     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
  45         return 0;
  46     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
  47     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
  48         return 0;
  49
  50     return 1;
  51 }
  52
  53 /*
  54  * For the algorithm names, we use the following formula for our primary
  55  * names:
  56  *
  57  *     ALGNAME[VERSION?][-SUBNAME[VERSION?]?][-SIZE?][-MODE?]
  58  *
  59  *     VERSION is only present if there are multiple versions of
  60  *     an alg (MD2, MD4, MD5).  It may be omitted if there is only
  61  *     one version (if a subsequent version is released in the future,
  62  *     we can always change the canonical name, and add the old name
  63  *     as an alias).
  64  *
  65  *     SUBNAME may be present where we are combining multiple
  66  *     algorithms together, e.g. MD5-SHA1.
  67  *
  68  *     SIZE is only present if multiple versions of an algorithm exist
  69  *     with different sizes (e.g. AES-128-CBC, AES-256-CBC)
  70  *
  71  *     MODE is only present where applicable.
  72  *
  73  * We add diverse other names where applicable, such as the names that
  74  * NIST uses, or that are used for ASN.1 OBJECT IDENTIFIERs, or names
  75  * we have used historically.
  76  */
  77 static const OSSL_ALGORITHM deflt_digests[] = {
  78     /* Our primary name:NIST name[:our older names] */
  79     { "SHA1:SHA-1", "default=yes", sha1_functions },
  80     { "SHA2-224:SHA-224:SHA224", "default=yes", sha224_functions },
  81     { "SHA2-256:SHA-256:SHA256", "default=yes", sha256_functions },
  82     { "SHA2-384:SHA-384:SHA384", "default=yes", sha384_functions },
  83     { "SHA2-512:SHA-512:SHA512", "default=yes", sha512_functions },
  84     { "SHA2-512/224:SHA-512/224:SHA512-224", "default=yes",
  85       sha512_224_functions },
  86     { "SHA2-512/256:SHA-512/256:SHA512-256", "default=yes",
  87       sha512_256_functions },
  88
  89     /* We agree with NIST here, so one name only */
  90     { "SHA3-224", "default=yes", sha3_224_functions },
  91     { "SHA3-256", "default=yes", sha3_256_functions },
  92     { "SHA3-384", "default=yes", sha3_384_functions },
  93     { "SHA3-512", "default=yes", sha3_512_functions },
  94
  95     /*
  96      * KECCAK_KMAC128 and KECCAK_KMAC256 as hashes are mostly useful for
  97      * the KMAC128 and KMAC256.
  98      */
  99     { "KECCAK_KMAC128", "default=yes", keccak_kmac_128_functions },
 100     { "KECCAK_KMAC256", "default=yes", keccak_kmac_256_functions },
 101
 102     /* Our primary name:NIST name */
 103     { "SHAKE-128:SHAKE128", "default=yes", shake_128_functions },
 104     { "SHAKE-256:SHAKE256", "default=yes", shake_256_functions },
 105
 106 #ifndef OPENSSL_NO_BLAKE2
 107     /*
 108      * https://blake2.net/ doesn't specify size variants,
 109      * but mentions that Bouncy Castle uses the names
 110      * BLAKE2b-160, BLAKE2b-256, BLAKE2b-384, and BLAKE2b-512
 111      * If we assume that "2b" and "2s" are versions, that pattern
 112      * fits with ours.  We also add our historical names.
 113      */
 114     { "BLAKE2s-256:BLAKE2s256", "default=yes", blake2s256_functions },
 115     { "BLAKE2b-512:BLAKE2b512", "default=yes", blake2b512_functions },
 116 #endif /* OPENSSL_NO_BLAKE2 */
 117
 118 #ifndef OPENSSL_NO_SM3
 119     { "SM3", "default=yes", sm3_functions },
 120 #endif /* OPENSSL_NO_SM3 */
 121
 122 #ifndef OPENSSL_NO_MD5
 123     { "MD5", "default=yes", md5_functions },
 124     { "MD5-SHA1", "default=yes", md5_sha1_functions },
 125 #endif /* OPENSSL_NO_MD5 */
 126
 127     { NULL, NULL, NULL }
 128 };
 129
 130 static const OSSL_ALGORITHM deflt_ciphers[] = {
 131     { "AES-256-ECB", "default=yes", aes256ecb_functions },
 132     { "AES-192-ECB", "default=yes", aes192ecb_functions },
 133     { "AES-128-ECB", "default=yes", aes128ecb_functions },
 134     { "AES-256-CBC", "default=yes", aes256cbc_functions },
 135     { "AES-192-CBC", "default=yes", aes192cbc_functions },
 136     { "AES-128-CBC", "default=yes", aes128cbc_functions },
 137     { "AES-256-OFB", "default=yes", aes256ofb_functions },
 138     { "AES-192-OFB", "default=yes", aes192ofb_functions },
 139     { "AES-128-OFB", "default=yes", aes128ofb_functions },
 140     { "AES-256-CFB", "default=yes", aes256cfb_functions },
 141     { "AES-192-CFB", "default=yes", aes192cfb_functions },
 142     { "AES-128-CFB", "default=yes", aes128cfb_functions },
 143     { "AES-256-CFB1", "default=yes", aes256cfb1_functions },
 144     { "AES-192-CFB1", "default=yes", aes192cfb1_functions },
 145     { "AES-128-CFB1", "default=yes", aes128cfb1_functions },
 146     { "AES-256-CFB8", "default=yes", aes256cfb8_functions },
 147     { "AES-192-CFB8", "default=yes", aes192cfb8_functions },
 148     { "AES-128-CFB8", "default=yes", aes128cfb8_functions },
 149     { "AES-256-CTR", "default=yes", aes256ctr_functions },
 150     { "AES-192-CTR", "default=yes", aes192ctr_functions },
 151     { "AES-128-CTR", "default=yes", aes128ctr_functions },
 152     { "AES-256-XTS", "default=yes", aes256xts_functions },
 153     { "AES-128-XTS", "default=yes", aes128xts_functions },
 154 #ifndef OPENSSL_NO_OCB
 155     { "AES-256-OCB", "default=yes", aes256ocb_functions },
 156     { "AES-192-OCB", "default=yes", aes192ocb_functions },
 157     { "AES-128-OCB", "default=yes", aes128ocb_functions },
 158 #endif /* OPENSSL_NO_OCB */
 159 #ifndef OPENSSL_NO_SIV
 160     { "AES-128-SIV", "default=yes", aes128siv_functions },
 161     { "AES-192-SIV", "default=yes", aes192siv_functions },
 162     { "AES-256-SIV", "default=yes", aes256siv_functions },
 163 #endif /* OPENSSL_NO_SIV */
 164     { "AES-256-GCM:id-aes256-GCM", "default=yes", aes256gcm_functions },
 165     { "AES-192-GCM:id-aes192-GCM", "default=yes", aes192gcm_functions },
 166     { "AES-128-GCM:id-aes128-GCM", "default=yes", aes128gcm_functions },
 167     { "AES-256-CCM:id-aes256-CCM", "default=yes", aes256ccm_functions },
 168     { "AES-192-CCM:id-aes192-CCM", "default=yes", aes192ccm_functions },
 169     { "AES-128-CCM:id-aes128-CCM", "default=yes", aes128ccm_functions },
 170     { "AES-256-WRAP:id-aes256-wrap:AES256-WRAP", "default=yes",
 171       aes256wrap_functions },
 172     { "AES-192-WRAP:id-aes192-wrap:AES192-WRAP", "default=yes",
 173       aes192wrap_functions },
 174     { "AES-128-WRAP:id-aes128-wrap:AES128-WRAP", "default=yes",
 175       aes128wrap_functions },
 176     { "AES-256-WRAP-PAD:id-aes256-wrap-pad:AES256-WRAP-PAD", "default=yes",
 177       aes256wrappad_functions },
 178     { "AES-192-WRAP-PAD:id-aes192-wrap-pad:AES192-WRAP-PAD", "default=yes",
 179       aes192wrappad_functions },
 180     { "AES-128-WRAP-PAD:id-aes128-wrap-pad:AES128-WRAP-PAD", "default=yes",
 181       aes128wrappad_functions },
 182 #ifndef OPENSSL_NO_ARIA
 183     { "ARIA-256-GCM", "default=yes", aria256gcm_functions },
 184     { "ARIA-192-GCM", "default=yes", aria192gcm_functions },
 185     { "ARIA-128-GCM", "default=yes", aria128gcm_functions },
 186     { "ARIA-256-CCM", "default=yes", aria256ccm_functions },
 187     { "ARIA-192-CCM", "default=yes", aria192ccm_functions },
 188     { "ARIA-128-CCM", "default=yes", aria128ccm_functions },
 189     { "ARIA-256-ECB", "default=yes", aria256ecb_functions },
 190     { "ARIA-192-ECB", "default=yes", aria192ecb_functions },
 191     { "ARIA-128-ECB", "default=yes", aria128ecb_functions },
 192     { "ARIA-256-CBC:ARIA256", "default=yes", aria256cbc_functions },
 193     { "ARIA-192-CBC:ARIA192", "default=yes", aria192cbc_functions },
 194     { "ARIA-128-CBC:ARIA128", "default=yes", aria128cbc_functions },
 195     { "ARIA-256-OFB", "default=yes", aria256ofb_functions },
 196     { "ARIA-192-OFB", "default=yes", aria192ofb_functions },
 197     { "ARIA-128-OFB", "default=yes", aria128ofb_functions },
 198     { "ARIA-256-CFB", "default=yes", aria256cfb_functions },
 199     { "ARIA-192-CFB", "default=yes", aria192cfb_functions },
 200     { "ARIA-128-CFB", "default=yes", aria128cfb_functions },
 201     { "ARIA-256-CFB1", "default=yes", aria256cfb1_functions },
 202     { "ARIA-192-CFB1", "default=yes", aria192cfb1_functions },
 203     { "ARIA-128-CFB1", "default=yes", aria128cfb1_functions },
 204     { "ARIA-256-CFB8", "default=yes", aria256cfb8_functions },
 205     { "ARIA-192-CFB8", "default=yes", aria192cfb8_functions },
 206     { "ARIA-128-CFB8", "default=yes", aria128cfb8_functions },
 207     { "ARIA-256-CTR", "default=yes", aria256ctr_functions },
 208     { "ARIA-192-CTR", "default=yes", aria192ctr_functions },
 209     { "ARIA-128-CTR", "default=yes", aria128ctr_functions },
 210 #endif /* OPENSSL_NO_ARIA */
 211 #ifndef OPENSSL_NO_CAMELLIA
 212     { "CAMELLIA-256-ECB", "default=yes", camellia256ecb_functions },
 213     { "CAMELLIA-192-ECB", "default=yes", camellia192ecb_functions },
 214     { "CAMELLIA-128-ECB", "default=yes", camellia128ecb_functions },
 215     { "CAMELLIA-256-CBC:CAMELLIA256", "default=yes", camellia256cbc_functions },
 216     { "CAMELLIA-192-CBC:CAMELLIA192", "default=yes", camellia192cbc_functions },
 217     { "CAMELLIA-128-CBC:CAMELLIA128", "default=yes", camellia128cbc_functions },
 218     { "CAMELLIA-256-OFB", "default=yes", camellia256ofb_functions },
 219     { "CAMELLIA-192-OFB", "default=yes", camellia192ofb_functions },
 220     { "CAMELLIA-128-OFB", "default=yes", camellia128ofb_functions },
 221     { "CAMELLIA-256-CFB", "default=yes", camellia256cfb_functions },
 222     { "CAMELLIA-192-CFB", "default=yes", camellia192cfb_functions },
 223     { "CAMELLIA-128-CFB", "default=yes", camellia128cfb_functions },
 224     { "CAMELLIA-256-CFB1", "default=yes", camellia256cfb1_functions },
 225     { "CAMELLIA-192-CFB1", "default=yes", camellia192cfb1_functions },
 226     { "CAMELLIA-128-CFB1", "default=yes", camellia128cfb1_functions },
 227     { "CAMELLIA-256-CFB8", "default=yes", camellia256cfb8_functions },
 228     { "CAMELLIA-192-CFB8", "default=yes", camellia192cfb8_functions },
 229     { "CAMELLIA-128-CFB8", "default=yes", camellia128cfb8_functions },
 230     { "CAMELLIA-256-CTR", "default=yes", camellia256ctr_functions },
 231     { "CAMELLIA-192-CTR", "default=yes", camellia192ctr_functions },
 232     { "CAMELLIA-128-CTR", "default=yes", camellia128ctr_functions },
 233 #endif /* OPENSSL_NO_CAMELLIA */
 234 #ifndef OPENSSL_NO_DES
 235     { "DES-EDE3-ECB:DES-EDE3", "default=yes", tdes_ede3_ecb_functions },
 236     { "DES-EDE3-CBC:DES3", "default=yes", tdes_ede3_cbc_functions },
 237     { "DES-EDE3-OFB", "default=yes", tdes_ede3_ofb_functions },
 238     { "DES-EDE3-CFB", "default=yes", tdes_ede3_cfb_functions },
 239     { "DES-EDE3-CFB8", "default=yes", tdes_ede3_cfb8_functions },
 240     { "DES-EDE3-CFB1", "default=yes", tdes_ede3_cfb1_functions },
 241     { "DES-EDE-ECB:DES-EDE", "default=yes", tdes_ede2_ecb_functions },
 242     { "DES-EDE-CBC", "default=yes", tdes_ede2_cbc_functions },
 243     { "DES-EDE-OFB", "default=yes", tdes_ede2_ofb_functions },
 244     { "DES-EDE-CFB", "default=yes", tdes_ede2_cfb_functions },
 245     { "DESX-CBC:DESX", "default=yes", tdes_desx_cbc_functions },
 246     { "DES3-WRAP:id-smime-alg-CMS3DESwrap", "default=yes", tdes_wrap_cbc_functions },
 247     { "DES-ECB", "default=yes", des_ecb_functions },
 248     { "DES-CBC:DES", "default=yes", des_cbc_functions },
 249     { "DES-OFB", "default=yes", des_ofb64_functions },
 250     { "DES-CFB", "default=yes", des_cfb64_functions },
 251     { "DES-CFB1", "default=yes", des_cfb1_functions },
 252     { "DES-CFB8", "default=yes", des_cfb8_functions },
 253 #endif /* OPENSSL_NO_DES */
 254 #ifndef OPENSSL_NO_BF
 255     { "BF-ECB", "default=yes", blowfish128ecb_functions },
 256     { "BF-CBC:BF:BLOWFISH", "default=yes", blowfish128cbc_functions },
 257     { "BF-OFB", "default=yes", blowfish64ofb64_functions },
 258     { "BF-CFB", "default=yes", blowfish64cfb64_functions },
 259 #endif /* OPENSSL_NO_BF */
 260 #ifndef OPENSSL_NO_IDEA
 261     { "IDEA-ECB", "default=yes", idea128ecb_functions },
 262     { "IDEA-CBC:IDEA", "default=yes", idea128cbc_functions },
 263     { "IDEA-OFB:IDEA-OFB64", "default=yes", idea128ofb64_functions },
 264     { "IDEA-CFB:IDEA-CFB64", "default=yes", idea128cfb64_functions },
 265 #endif /* OPENSSL_NO_IDEA */
 266 #ifndef OPENSSL_NO_CAST
 267     { "CAST5-ECB", "default=yes", cast5128ecb_functions },
 268     { "CAST5-CBC:CAST-CBC:CAST", "default=yes", cast5128cbc_functions },
 269     { "CAST5-OFB", "default=yes", cast564ofb64_functions },
 270     { "CAST5-CFB", "default=yes", cast564cfb64_functions },
 271 #endif /* OPENSSL_NO_CAST */
 272 #ifndef OPENSSL_NO_SEED
 273     { "SEED-ECB", "default=yes", seed128ecb_functions },
 274     { "SEED-CBC:SEED", "default=yes", seed128cbc_functions },
 275     { "SEED-OFB:SEED-OFB128", "default=yes", seed128ofb128_functions },
 276     { "SEED-CFB:SEED-CFB128", "default=yes", seed128cfb128_functions },
 277 #endif /* OPENSSL_NO_SEED */
 278 #ifndef OPENSSL_NO_SM4
 279     { "SM4-ECB", "default=yes", sm4128ecb_functions },
 280     { "SM4-CBC:SM4", "default=yes", sm4128cbc_functions },
 281     { "SM4-CTR", "default=yes", sm4128ctr_functions },
 282     { "SM4-OFB:SM4-OFB128", "default=yes", sm4128ofb128_functions },
 283     { "SM4-CFB:SM4-CFB128", "default=yes", sm4128cfb128_functions },
 284 #endif /* OPENSSL_NO_SM4 */
 285 #ifndef OPENSSL_NO_RC4
 286     { "RC4", "default=yes", rc4128_functions },
 287     { "RC4-40", "default=yes", rc440_functions },
 288 # ifndef OPENSSL_NO_MD5
 289     { "RC4-HMAC-MD5", "default=yes", rc4_hmac_md5_functions },
 290 # endif /* OPENSSL_NO_MD5 */
 291 #endif /* OPENSSL_NO_RC4 */
 292 #ifndef OPENSSL_NO_RC5
 293     { "RC5-ECB", "default=yes", rc5128ecb_functions },
 294     { "RC5-CBC", "default=yes", rc5128cbc_functions },
 295     { "RC5-OFB", "default=yes", rc5128ofb64_functions },
 296     { "RC5-CFB", "default=yes", rc5128cfb64_functions },
 297 #endif /* OPENSSL_NO_RC5 */
 298 #ifndef OPENSSL_NO_RC2
 299     { "RC2-ECB", "default=yes", rc2128ecb_functions },
 300     { "RC2-CBC", "default=yes", rc2128cbc_functions },
 301     { "RC2-40-CBC", "default=yes", rc240cbc_functions },
 302     { "RC2-64-CBC", "default=yes", rc264cbc_functions },
 303     { "RC2-CFB", "default=yes", rc2128cfb128_functions },
 304     { "RC2-OFB", "default=yes", rc2128ofb128_functions },
 305 #endif /* OPENSSL_NO_RC2 */
 306 #ifndef OPENSSL_NO_CHACHA
 307     { "ChaCha20", "default=yes", chacha20_functions },
 308 # ifndef OPENSSL_NO_POLY1305
 309     { "ChaCha20-Poly1305", "default=yes", chacha20_poly1305_functions },
 310 # endif /* OPENSSL_NO_POLY1305 */
 311 #endif /* OPENSSL_NO_CHACHA */
 312     { NULL, NULL, NULL }
 313 };
 314
 315 static const OSSL_ALGORITHM deflt_macs[] = {
 316 #ifndef OPENSSL_NO_BLAKE2
 317     { "BLAKE2bMAC", "default=yes", blake2bmac_functions },
 318     { "BLAKE2sMAC", "default=yes", blake2smac_functions },
 319 #endif
 320 #ifndef OPENSSL_NO_CMAC
 321     { "CMAC", "default=yes", cmac_functions },
 322 #endif
 323     { "GMAC", "default=yes", gmac_functions },
 324     { "HMAC", "default=yes", hmac_functions },
 325     { "KMAC128", "default=yes", kmac128_functions },
 326     { "KMAC256", "default=yes", kmac256_functions },
 327 #ifndef OPENSSL_NO_SIPHASH
 328     { "SipHash", "default=yes", siphash_functions },
 329 #endif
 330 #ifndef OPENSSL_NO_POLY1305
 331     { "Poly1305", "default=yes", poly1305_functions },
 332 #endif
 333     { NULL, NULL, NULL }
 334 };
 335
 336 static const OSSL_ALGORITHM deflt_kdfs[] = {
 337     { "HKDF", "default=yes", kdf_hkdf_functions },
 338     { "SSKDF", "default=yes", kdf_sskdf_functions },
 339     { "PBKDF2", "default=yes", kdf_pbkdf2_functions },
 340     { "SSHKDF", "default=yes", kdf_sshkdf_functions },
 341     { "X963KDF", "default=yes", kdf_x963_kdf_functions },
 342     { "TLS1-PRF", "default=yes", kdf_tls1_prf_functions },
 343     { "KBKDF", "default=yes", kdf_kbkdf_functions },
 344 #ifndef OPENSSL_NO_CMS
 345     { "X942KDF", "default=yes", kdf_x942_kdf_functions },
 346 #endif
 347 #ifndef OPENSSL_NO_SCRYPT
 348     { "SCRYPT:id-scrypt", "default=yes", kdf_scrypt_functions },
 349 #endif
 350     { "KRB5KDF", "default=yes", kdf_krb5kdf_functions },
 351     { NULL, NULL, NULL }
 352 };
 353
 354 static const OSSL_ALGORITHM deflt_keyexch[] = {
 355 #ifndef OPENSSL_NO_DH
 356     { "DH:dhKeyAgreement", "default=yes", dh_keyexch_functions },
 357 #endif
 358     { NULL, NULL, NULL }
 359 };
 360
 361 static const OSSL_ALGORITHM deflt_signature[] = {
 362 #ifndef OPENSSL_NO_DSA
 363     { "DSA:dsaEncryption", "default=yes", dsa_signature_functions },
 364 #endif
 365     { NULL, NULL, NULL }
 366 };
 367
 368
 369 static const OSSL_ALGORITHM deflt_keymgmt[] = {
 370 #ifndef OPENSSL_NO_DH
 371     { "DH", "default=yes", dh_keymgmt_functions },
 372 #endif
 373 #ifndef OPENSSL_NO_DSA
 374     { "DSA", "default=yes", dsa_keymgmt_functions },
 375 #endif
 376     { "RSA", "default=yes", rsa_keymgmt_functions },
 377     { NULL, NULL, NULL }
 378 };
 379
 380 static const OSSL_ALGORITHM *deflt_query(OSSL_PROVIDER *prov,
 381                                          int operation_id,
 382                                          int *no_cache)
 383 {
 384     *no_cache = 0;
 385     switch (operation_id) {
 386     case OSSL_OP_DIGEST:
 387         return deflt_digests;
 388     case OSSL_OP_CIPHER:
 389         return deflt_ciphers;
 390     case OSSL_OP_MAC:
 391         return deflt_macs;
 392     case OSSL_OP_KDF:
 393         return deflt_kdfs;
 394     case OSSL_OP_KEYMGMT:
 395         return deflt_keymgmt;
 396     case OSSL_OP_KEYEXCH:
 397         return deflt_keyexch;
 398     case OSSL_OP_SIGNATURE:
 399         return deflt_signature;
 400     }
 401     return NULL;
 402 }
 403
 404 /* Functions we provide to the core */
 405 static const OSSL_DISPATCH deflt_dispatch_table[] = {
 406     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))deflt_gettable_params },
 407     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))deflt_get_params },
 408     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))deflt_query },
 409     { 0, NULL }
 410 };
 411
 412 OSSL_provider_init_fn ossl_default_provider_init;
 413
 414 int ossl_default_provider_init(const OSSL_PROVIDER *provider,
 415                                const OSSL_DISPATCH *in,
 416                                const OSSL_DISPATCH **out,
 417                                void **provctx)
 418 {
 419     OSSL_core_get_library_context_fn *c_get_libctx = NULL;
 420
 421     for (; in->function_id != 0; in++) {
 422         switch (in->function_id) {
 423         case OSSL_FUNC_CORE_GETTABLE_PARAMS:
 424             c_gettable_params = OSSL_get_core_gettable_params(in);
 425             break;
 426         case OSSL_FUNC_CORE_GET_PARAMS:
 427             c_get_params = OSSL_get_core_get_params(in);
 428             break;
 429         case OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT:
 430             c_get_libctx = OSSL_get_core_get_library_context(in);
 431             break;
 432         default:
 433             /* Just ignore anything we don't understand */
 434             break;
 435         }
 436     }
 437
 438     if (c_get_libctx == NULL)
 439         return 0;
 440
 441     *out = deflt_dispatch_table;
 442
 443     /*
 444      * We want to make sure that all calls from this provider that requires
 445      * a library context use the same context as the one used to call our
 446      * functions.  We do that by passing it along as the provider context.
 447      */
 448     *provctx = c_get_libctx(provider);
 449     return 1;
 450 }