Implement the NULL cipher in the default provider
[openssl.git] / 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/bio.h"
18 #include "prov/providercommon.h"
19 #include "prov/implementations.h"
20 #include "prov/provider_util.h"
21 #include "internal/nelem.h"
22
23 #define ALGC(NAMES, FUNC, CHECK) { { NAMES, "default=yes", FUNC }, CHECK }
24 #define ALG(NAMES, FUNC) ALGC(NAMES, FUNC, NULL)
25
26 /* Functions provided by the core */
27 static OSSL_core_gettable_params_fn *c_gettable_params = NULL;
28 static OSSL_core_get_params_fn *c_get_params = NULL;
29
30 /* Parameters we provide to the core */
31 static const OSSL_PARAM deflt_param_types[] = {
32     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
33     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
34     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
35     OSSL_PARAM_END
36 };
37
38 static const OSSL_PARAM *deflt_gettable_params(const OSSL_PROVIDER *prov)
39 {
40     return deflt_param_types;
41 }
42
43 static int deflt_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
44 {
45     OSSL_PARAM *p;
46
47     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME);
48     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Default Provider"))
49         return 0;
50     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION);
51     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR))
52         return 0;
53     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO);
54     if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR))
55         return 0;
56
57     return 1;
58 }
59
60 /*
61  * For the algorithm names, we use the following formula for our primary
62  * names:
63  *
64  *     ALGNAME[VERSION?][-SUBNAME[VERSION?]?][-SIZE?][-MODE?]
65  *
66  *     VERSION is only present if there are multiple versions of
67  *     an alg (MD2, MD4, MD5).  It may be omitted if there is only
68  *     one version (if a subsequent version is released in the future,
69  *     we can always change the canonical name, and add the old name
70  *     as an alias).
71  *
72  *     SUBNAME may be present where we are combining multiple
73  *     algorithms together, e.g. MD5-SHA1.
74  *
75  *     SIZE is only present if multiple versions of an algorithm exist
76  *     with different sizes (e.g. AES-128-CBC, AES-256-CBC)
77  *
78  *     MODE is only present where applicable.
79  *
80  * We add diverse other names where applicable, such as the names that
81  * NIST uses, or that are used for ASN.1 OBJECT IDENTIFIERs, or names
82  * we have used historically.
83  *
84  * Algorithm names are case insensitive, but we use all caps in our "canonical"
85  * names for consistency.
86  */
87 static const OSSL_ALGORITHM deflt_digests[] = {
88     /* Our primary name:NIST name[:our older names] */
89     { "SHA1:SHA-1", "default=yes", sha1_functions },
90     { "SHA2-224:SHA-224:SHA224", "default=yes", sha224_functions },
91     { "SHA2-256:SHA-256:SHA256", "default=yes", sha256_functions },
92     { "SHA2-384:SHA-384:SHA384", "default=yes", sha384_functions },
93     { "SHA2-512:SHA-512:SHA512", "default=yes", sha512_functions },
94     { "SHA2-512/224:SHA-512/224:SHA512-224", "default=yes",
95       sha512_224_functions },
96     { "SHA2-512/256:SHA-512/256:SHA512-256", "default=yes",
97       sha512_256_functions },
98
99     /* We agree with NIST here, so one name only */
100     { "SHA3-224", "default=yes", sha3_224_functions },
101     { "SHA3-256", "default=yes", sha3_256_functions },
102     { "SHA3-384", "default=yes", sha3_384_functions },
103     { "SHA3-512", "default=yes", sha3_512_functions },
104
105     /*
106      * KECCAK-KMAC-128 and KECCAK-KMAC-256 as hashes are mostly useful for
107      * the KMAC-128 and KMAC-256.
108      */
109     { "KECCAK-KMAC-128:KECCAK-KMAC128", "default=yes", keccak_kmac_128_functions },
110     { "KECCAK-KMAC-256:KECCAK-KMAC256", "default=yes", keccak_kmac_256_functions },
111
112     /* Our primary name:NIST name */
113     { "SHAKE-128:SHAKE128", "default=yes", shake_128_functions },
114     { "SHAKE-256:SHAKE256", "default=yes", shake_256_functions },
115
116 #ifndef OPENSSL_NO_BLAKE2
117     /*
118      * https://blake2.net/ doesn't specify size variants,
119      * but mentions that Bouncy Castle uses the names
120      * BLAKE2b-160, BLAKE2b-256, BLAKE2b-384, and BLAKE2b-512
121      * If we assume that "2b" and "2s" are versions, that pattern
122      * fits with ours.  We also add our historical names.
123      */
124     { "BLAKE2S-256:BLAKE2s256", "default=yes", blake2s256_functions },
125     { "BLAKE2B-512:BLAKE2b512", "default=yes", blake2b512_functions },
126 #endif /* OPENSSL_NO_BLAKE2 */
127
128 #ifndef OPENSSL_NO_SM3
129     { "SM3", "default=yes", sm3_functions },
130 #endif /* OPENSSL_NO_SM3 */
131
132 #ifndef OPENSSL_NO_MD5
133     { "MD5", "default=yes", md5_functions },
134     { "MD5-SHA1", "default=yes", md5_sha1_functions },
135 #endif /* OPENSSL_NO_MD5 */
136
137     { NULL, NULL, NULL }
138 };
139
140 static const OSSL_ALGORITHM_CAPABLE deflt_ciphers[] = {
141     ALG("NULL", null_functions),
142     ALG("AES-256-ECB", aes256ecb_functions),
143     ALG("AES-192-ECB", aes192ecb_functions),
144     ALG("AES-128-ECB", aes128ecb_functions),
145     ALG("AES-256-CBC", aes256cbc_functions),
146     ALG("AES-192-CBC", aes192cbc_functions),
147     ALG("AES-128-CBC", aes128cbc_functions),
148     ALG("AES-256-OFB", aes256ofb_functions),
149     ALG("AES-192-OFB", aes192ofb_functions),
150     ALG("AES-128-OFB", aes128ofb_functions),
151     ALG("AES-256-CFB", aes256cfb_functions),
152     ALG("AES-192-CFB", aes192cfb_functions),
153     ALG("AES-128-CFB", aes128cfb_functions),
154     ALG("AES-256-CFB1", aes256cfb1_functions),
155     ALG("AES-192-CFB1", aes192cfb1_functions),
156     ALG("AES-128-CFB1", aes128cfb1_functions),
157     ALG("AES-256-CFB8", aes256cfb8_functions),
158     ALG("AES-192-CFB8", aes192cfb8_functions),
159     ALG("AES-128-CFB8", aes128cfb8_functions),
160     ALG("AES-256-CTR", aes256ctr_functions),
161     ALG("AES-192-CTR", aes192ctr_functions),
162     ALG("AES-128-CTR", aes128ctr_functions),
163     ALG("AES-256-XTS", aes256xts_functions),
164     ALG("AES-128-XTS", aes128xts_functions),
165 #ifndef OPENSSL_NO_OCB
166     ALG("AES-256-OCB", aes256ocb_functions),
167     ALG("AES-192-OCB", aes192ocb_functions),
168     ALG("AES-128-OCB", aes128ocb_functions),
169 #endif /* OPENSSL_NO_OCB */
170 #ifndef OPENSSL_NO_SIV
171     ALG("AES-128-SIV", aes128siv_functions),
172     ALG("AES-192-SIV", aes192siv_functions),
173     ALG("AES-256-SIV", aes256siv_functions),
174 #endif /* OPENSSL_NO_SIV */
175     ALG("AES-256-GCM:id-aes256-GCM", aes256gcm_functions),
176     ALG("AES-192-GCM:id-aes192-GCM", aes192gcm_functions),
177     ALG("AES-128-GCM:id-aes128-GCM", aes128gcm_functions),
178     ALG("AES-256-CCM:id-aes256-CCM", aes256ccm_functions),
179     ALG("AES-192-CCM:id-aes192-CCM", aes192ccm_functions),
180     ALG("AES-128-CCM:id-aes128-CCM", aes128ccm_functions),
181     ALG("AES-256-WRAP:id-aes256-wrap:AES256-WRAP", aes256wrap_functions),
182     ALG("AES-192-WRAP:id-aes192-wrap:AES192-WRAP", aes192wrap_functions),
183     ALG("AES-128-WRAP:id-aes128-wrap:AES128-WRAP", aes128wrap_functions),
184     ALG("AES-256-WRAP-PAD:id-aes256-wrap-pad:AES256-WRAP-PAD",
185         aes256wrappad_functions),
186     ALG("AES-192-WRAP-PAD:id-aes192-wrap-pad:AES192-WRAP-PAD",
187         aes192wrappad_functions),
188     ALG("AES-128-WRAP-PAD:id-aes128-wrap-pad:AES128-WRAP-PAD",
189         aes128wrappad_functions),
190     ALGC("AES-128-CBC-HMAC-SHA1", aes128cbc_hmac_sha1_functions,
191          cipher_capable_aes_cbc_hmac_sha1),
192     ALGC("AES-256-CBC-HMAC-SHA1", aes256cbc_hmac_sha1_functions,
193          cipher_capable_aes_cbc_hmac_sha1),
194     ALGC("AES-128-CBC-HMAC-SHA256", aes128cbc_hmac_sha256_functions,
195         cipher_capable_aes_cbc_hmac_sha256),
196     ALGC("AES-256-CBC-HMAC-SHA256", aes256cbc_hmac_sha256_functions,
197          cipher_capable_aes_cbc_hmac_sha256),
198 #ifndef OPENSSL_NO_ARIA
199     ALG("ARIA-256-GCM", aria256gcm_functions),
200     ALG("ARIA-192-GCM", aria192gcm_functions),
201     ALG("ARIA-128-GCM", aria128gcm_functions),
202     ALG("ARIA-256-CCM", aria256ccm_functions),
203     ALG("ARIA-192-CCM", aria192ccm_functions),
204     ALG("ARIA-128-CCM", aria128ccm_functions),
205     ALG("ARIA-256-ECB", aria256ecb_functions),
206     ALG("ARIA-192-ECB", aria192ecb_functions),
207     ALG("ARIA-128-ECB", aria128ecb_functions),
208     ALG("ARIA-256-CBC:ARIA256", aria256cbc_functions),
209     ALG("ARIA-192-CBC:ARIA192", aria192cbc_functions),
210     ALG("ARIA-128-CBC:ARIA128", aria128cbc_functions),
211     ALG("ARIA-256-OFB", aria256ofb_functions),
212     ALG("ARIA-192-OFB", aria192ofb_functions),
213     ALG("ARIA-128-OFB", aria128ofb_functions),
214     ALG("ARIA-256-CFB", aria256cfb_functions),
215     ALG("ARIA-192-CFB", aria192cfb_functions),
216     ALG("ARIA-128-CFB", aria128cfb_functions),
217     ALG("ARIA-256-CFB1", aria256cfb1_functions),
218     ALG("ARIA-192-CFB1", aria192cfb1_functions),
219     ALG("ARIA-128-CFB1", aria128cfb1_functions),
220     ALG("ARIA-256-CFB8", aria256cfb8_functions),
221     ALG("ARIA-192-CFB8", aria192cfb8_functions),
222     ALG("ARIA-128-CFB8", aria128cfb8_functions),
223     ALG("ARIA-256-CTR", aria256ctr_functions),
224     ALG("ARIA-192-CTR", aria192ctr_functions),
225     ALG("ARIA-128-CTR", aria128ctr_functions),
226 #endif /* OPENSSL_NO_ARIA */
227 #ifndef OPENSSL_NO_CAMELLIA
228     ALG("CAMELLIA-256-ECB", camellia256ecb_functions),
229     ALG("CAMELLIA-192-ECB", camellia192ecb_functions),
230     ALG("CAMELLIA-128-ECB", camellia128ecb_functions),
231     ALG("CAMELLIA-256-CBC:CAMELLIA256", camellia256cbc_functions),
232     ALG("CAMELLIA-192-CBC:CAMELLIA192", camellia192cbc_functions),
233     ALG("CAMELLIA-128-CBC:CAMELLIA128", camellia128cbc_functions),
234     ALG("CAMELLIA-256-OFB", camellia256ofb_functions),
235     ALG("CAMELLIA-192-OFB", camellia192ofb_functions),
236     ALG("CAMELLIA-128-OFB", camellia128ofb_functions),
237     ALG("CAMELLIA-256-CFB", camellia256cfb_functions),
238     ALG("CAMELLIA-192-CFB", camellia192cfb_functions),
239     ALG("CAMELLIA-128-CFB", camellia128cfb_functions),
240     ALG("CAMELLIA-256-CFB1", camellia256cfb1_functions),
241     ALG("CAMELLIA-192-CFB1", camellia192cfb1_functions),
242     ALG("CAMELLIA-128-CFB1", camellia128cfb1_functions),
243     ALG("CAMELLIA-256-CFB8", camellia256cfb8_functions),
244     ALG("CAMELLIA-192-CFB8", camellia192cfb8_functions),
245     ALG("CAMELLIA-128-CFB8", camellia128cfb8_functions),
246     ALG("CAMELLIA-256-CTR", camellia256ctr_functions),
247     ALG("CAMELLIA-192-CTR", camellia192ctr_functions),
248     ALG("CAMELLIA-128-CTR", camellia128ctr_functions),
249 #endif /* OPENSSL_NO_CAMELLIA */
250 #ifndef OPENSSL_NO_DES
251     ALG("DES-EDE3-ECB:DES-EDE3", tdes_ede3_ecb_functions),
252     ALG("DES-EDE3-CBC:DES3", tdes_ede3_cbc_functions),
253     ALG("DES-EDE3-OFB", tdes_ede3_ofb_functions),
254     ALG("DES-EDE3-CFB", tdes_ede3_cfb_functions),
255     ALG("DES-EDE3-CFB8", tdes_ede3_cfb8_functions),
256     ALG("DES-EDE3-CFB1", tdes_ede3_cfb1_functions),
257     ALG("DES-EDE-ECB:DES-EDE", tdes_ede2_ecb_functions),
258     ALG("DES-EDE-CBC", tdes_ede2_cbc_functions),
259     ALG("DES-EDE-OFB", tdes_ede2_ofb_functions),
260     ALG("DES-EDE-CFB", tdes_ede2_cfb_functions),
261     ALG("DESX-CBC:DESX", tdes_desx_cbc_functions),
262     ALG("DES3-WRAP:id-smime-alg-CMS3DESwrap", tdes_wrap_cbc_functions),
263     ALG("DES-ECB", des_ecb_functions),
264     ALG("DES-CBC:DES", des_cbc_functions),
265     ALG("DES-OFB", des_ofb64_functions),
266     ALG("DES-CFB", des_cfb64_functions),
267     ALG("DES-CFB1", des_cfb1_functions),
268     ALG("DES-CFB8", des_cfb8_functions),
269 #endif /* OPENSSL_NO_DES */
270 #ifndef OPENSSL_NO_BF
271     ALG("BF-ECB", blowfish128ecb_functions),
272     ALG("BF-CBC:BF:BLOWFISH", blowfish128cbc_functions),
273     ALG("BF-OFB", blowfish64ofb64_functions),
274     ALG("BF-CFB", blowfish64cfb64_functions),
275 #endif /* OPENSSL_NO_BF */
276 #ifndef OPENSSL_NO_IDEA
277     ALG("IDEA-ECB", idea128ecb_functions),
278     ALG("IDEA-CBC:IDEA", idea128cbc_functions),
279     ALG("IDEA-OFB:IDEA-OFB64", idea128ofb64_functions),
280     ALG("IDEA-CFB:IDEA-CFB64", idea128cfb64_functions),
281 #endif /* OPENSSL_NO_IDEA */
282 #ifndef OPENSSL_NO_CAST
283     ALG("CAST5-ECB", cast5128ecb_functions),
284     ALG("CAST5-CBC:CAST-CBC:CAST", cast5128cbc_functions),
285     ALG("CAST5-OFB", cast564ofb64_functions),
286     ALG("CAST5-CFB", cast564cfb64_functions),
287 #endif /* OPENSSL_NO_CAST */
288 #ifndef OPENSSL_NO_SEED
289     ALG("SEED-ECB", seed128ecb_functions),
290     ALG("SEED-CBC:SEED", seed128cbc_functions),
291     ALG("SEED-OFB:SEED-OFB128", seed128ofb128_functions),
292     ALG("SEED-CFB:SEED-CFB128", seed128cfb128_functions),
293 #endif /* OPENSSL_NO_SEED */
294 #ifndef OPENSSL_NO_SM4
295     ALG("SM4-ECB", sm4128ecb_functions),
296     ALG("SM4-CBC:SM4", sm4128cbc_functions),
297     ALG("SM4-CTR", sm4128ctr_functions),
298     ALG("SM4-OFB:SM4-OFB128", sm4128ofb128_functions),
299     ALG("SM4-CFB:SM4-CFB128", sm4128cfb128_functions),
300 #endif /* OPENSSL_NO_SM4 */
301 #ifndef OPENSSL_NO_RC4
302     ALG("RC4", rc4128_functions),
303     ALG("RC4-40", rc440_functions),
304 # ifndef OPENSSL_NO_MD5
305     ALG("RC4-HMAC-MD5", rc4_hmac_md5_functions),
306 # endif /* OPENSSL_NO_MD5 */
307 #endif /* OPENSSL_NO_RC4 */
308 #ifndef OPENSSL_NO_RC5
309     ALG("RC5-ECB", rc5128ecb_functions),
310     ALG("RC5-CBC", rc5128cbc_functions),
311     ALG("RC5-OFB", rc5128ofb64_functions),
312     ALG("RC5-CFB", rc5128cfb64_functions),
313 #endif /* OPENSSL_NO_RC5 */
314 #ifndef OPENSSL_NO_RC2
315     ALG("RC2-ECB", rc2128ecb_functions),
316     ALG("RC2-CBC", rc2128cbc_functions),
317     ALG("RC2-40-CBC", rc240cbc_functions),
318     ALG("RC2-64-CBC", rc264cbc_functions),
319     ALG("RC2-CFB", rc2128cfb128_functions),
320     ALG("RC2-OFB", rc2128ofb128_functions),
321 #endif /* OPENSSL_NO_RC2 */
322 #ifndef OPENSSL_NO_CHACHA
323     ALG("ChaCha20", chacha20_functions),
324 # ifndef OPENSSL_NO_POLY1305
325     ALG("ChaCha20-Poly1305", chacha20_poly1305_functions),
326 # endif /* OPENSSL_NO_POLY1305 */
327 #endif /* OPENSSL_NO_CHACHA */
328     { { NULL, NULL, NULL }, NULL }
329 };
330 static OSSL_ALGORITHM exported_ciphers[OSSL_NELEM(deflt_ciphers)];
331
332 static const OSSL_ALGORITHM deflt_macs[] = {
333 #ifndef OPENSSL_NO_BLAKE2
334     { "BLAKE2BMAC", "default=yes", blake2bmac_functions },
335     { "BLAKE2SMAC", "default=yes", blake2smac_functions },
336 #endif
337 #ifndef OPENSSL_NO_CMAC
338     { "CMAC", "default=yes", cmac_functions },
339 #endif
340     { "GMAC", "default=yes", gmac_functions },
341     { "HMAC", "default=yes", hmac_functions },
342     { "KMAC-128:KMAC128", "default=yes", kmac128_functions },
343     { "KMAC-256:KMAC256", "default=yes", kmac256_functions },
344 #ifndef OPENSSL_NO_SIPHASH
345     { "SIPHASH", "default=yes", siphash_functions },
346 #endif
347 #ifndef OPENSSL_NO_POLY1305
348     { "POLY1305", "default=yes", poly1305_functions },
349 #endif
350     { NULL, NULL, NULL }
351 };
352
353 static const OSSL_ALGORITHM deflt_kdfs[] = {
354     { "HKDF", "default=yes", kdf_hkdf_functions },
355     { "SSKDF", "default=yes", kdf_sskdf_functions },
356     { "PBKDF2", "default=yes", kdf_pbkdf2_functions },
357     { "SSHKDF", "default=yes", kdf_sshkdf_functions },
358     { "X963KDF", "default=yes", kdf_x963_kdf_functions },
359     { "TLS1-PRF", "default=yes", kdf_tls1_prf_functions },
360     { "KBKDF", "default=yes", kdf_kbkdf_functions },
361 #ifndef OPENSSL_NO_CMS
362     { "X942KDF", "default=yes", kdf_x942_kdf_functions },
363 #endif
364 #ifndef OPENSSL_NO_SCRYPT
365     { "SCRYPT:id-scrypt", "default=yes", kdf_scrypt_functions },
366 #endif
367     { "KRB5KDF", "default=yes", kdf_krb5kdf_functions },
368     { NULL, NULL, NULL }
369 };
370
371 static const OSSL_ALGORITHM deflt_keyexch[] = {
372 #ifndef OPENSSL_NO_DH
373     { "DH:dhKeyAgreement", "default=yes", dh_keyexch_functions },
374 #endif
375     { NULL, NULL, NULL }
376 };
377
378 static const OSSL_ALGORITHM deflt_signature[] = {
379 #ifndef OPENSSL_NO_DSA
380     { "DSA:dsaEncryption", "default=yes", dsa_signature_functions },
381 #endif
382     { NULL, NULL, NULL }
383 };
384
385 static const OSSL_ALGORITHM deflt_asym_cipher[] = {
386     { "RSA:rsaEncryption", "default=yes", rsa_asym_cipher_functions },
387     { NULL, NULL, NULL }
388 };
389
390 static const OSSL_ALGORITHM deflt_keymgmt[] = {
391 #ifndef OPENSSL_NO_DH
392     { "DH:dhKeyAgreement", "default=yes", dh_keymgmt_functions },
393 #endif
394 #ifndef OPENSSL_NO_DSA
395     { "DSA:dsaEncryption", "default=yes", dsa_keymgmt_functions },
396 #endif
397     { "RSA:rsaEncryption", "default=yes", rsa_keymgmt_functions },
398     { NULL, NULL, NULL }
399 };
400
401 static const OSSL_ALGORITHM deflt_serializer[] = {
402     { "RSA", "default=yes,format=text,type=private",
403       rsa_priv_text_serializer_functions },
404     { "RSA", "default=yes,format=text,type=public",
405       rsa_pub_text_serializer_functions },
406     { "RSA", "default=yes,format=der,type=private",
407       rsa_priv_der_serializer_functions },
408     { "RSA", "default=yes,format=der,type=public",
409       rsa_pub_der_serializer_functions },
410     { "RSA", "default=yes,format=pem,type=private",
411       rsa_priv_pem_serializer_functions },
412     { "RSA", "default=yes,format=pem,type=public",
413       rsa_pub_pem_serializer_functions },
414
415 #ifndef OPENSSL_NO_DH
416     { "DH", "default=yes,format=text,type=private",
417       dh_priv_text_serializer_functions },
418     { "DH", "default=yes,format=text,type=public",
419       dh_pub_text_serializer_functions },
420     { "DH", "default=yes,format=text,type=domainparams",
421       dh_param_text_serializer_functions },
422     { "DH", "default=yes,format=der,type=private",
423       dh_priv_der_serializer_functions },
424     { "DH", "default=yes,format=der,type=public",
425       dh_pub_der_serializer_functions },
426     { "DH", "default=yes,format=der,type=domainparams",
427       dh_param_der_serializer_functions },
428     { "DH", "default=yes,format=pem,type=private",
429       dh_priv_pem_serializer_functions },
430     { "DH", "default=yes,format=pem,type=public",
431       dh_pub_pem_serializer_functions },
432     { "DH", "default=yes,format=pem,type=domainparams",
433       dh_param_pem_serializer_functions },
434 #endif
435
436 #ifndef OPENSSL_NO_DSA
437     { "DSA", "default=yes,format=text,type=private",
438       dsa_priv_text_serializer_functions },
439     { "DSA", "default=yes,format=text,type=public",
440       dsa_pub_text_serializer_functions },
441     { "DSA", "default=yes,format=text,type=domainparams",
442       dsa_param_text_serializer_functions },
443     { "DSA", "default=yes,format=der,type=private",
444       dsa_priv_der_serializer_functions },
445     { "DSA", "default=yes,format=der,type=public",
446       dsa_pub_der_serializer_functions },
447     { "DSA", "default=yes,format=der,type=domainparams",
448       dsa_param_der_serializer_functions },
449     { "DSA", "default=yes,format=pem,type=private",
450       dsa_priv_pem_serializer_functions },
451     { "DSA", "default=yes,format=pem,type=public",
452       dsa_pub_pem_serializer_functions },
453     { "DSA", "default=yes,format=pem,type=domainparams",
454       dsa_param_pem_serializer_functions },
455 #endif
456
457     { NULL, NULL, NULL }
458 };
459
460 static const OSSL_ALGORITHM *deflt_query(OSSL_PROVIDER *prov,
461                                          int operation_id,
462                                          int *no_cache)
463 {
464     *no_cache = 0;
465     switch (operation_id) {
466     case OSSL_OP_DIGEST:
467         return deflt_digests;
468     case OSSL_OP_CIPHER:
469         ossl_prov_cache_exported_algorithms(deflt_ciphers, exported_ciphers);
470         return exported_ciphers;
471     case OSSL_OP_MAC:
472         return deflt_macs;
473     case OSSL_OP_KDF:
474         return deflt_kdfs;
475     case OSSL_OP_KEYMGMT:
476         return deflt_keymgmt;
477     case OSSL_OP_KEYEXCH:
478         return deflt_keyexch;
479     case OSSL_OP_SIGNATURE:
480         return deflt_signature;
481     case OSSL_OP_ASYM_CIPHER:
482         return deflt_asym_cipher;
483     case OSSL_OP_SERIALIZER:
484         return deflt_serializer;
485     }
486     return NULL;
487 }
488
489 /* Functions we provide to the core */
490 static const OSSL_DISPATCH deflt_dispatch_table[] = {
491     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))deflt_gettable_params },
492     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))deflt_get_params },
493     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))deflt_query },
494     { 0, NULL }
495 };
496
497 OSSL_provider_init_fn ossl_default_provider_init;
498
499 int ossl_default_provider_init(const OSSL_PROVIDER *provider,
500                                const OSSL_DISPATCH *in,
501                                const OSSL_DISPATCH **out,
502                                void **provctx)
503 {
504     OSSL_core_get_library_context_fn *c_get_libctx = NULL;
505
506     if (!ossl_prov_bio_from_dispatch(in))
507         return 0;
508     for (; in->function_id != 0; in++) {
509         switch (in->function_id) {
510         case OSSL_FUNC_CORE_GETTABLE_PARAMS:
511             c_gettable_params = OSSL_get_core_gettable_params(in);
512             break;
513         case OSSL_FUNC_CORE_GET_PARAMS:
514             c_get_params = OSSL_get_core_get_params(in);
515             break;
516         case OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT:
517             c_get_libctx = OSSL_get_core_get_library_context(in);
518             break;
519         default:
520             /* Just ignore anything we don't understand */
521             break;
522         }
523     }
524
525     if (c_get_libctx == NULL)
526         return 0;
527
528     *out = deflt_dispatch_table;
529
530     /*
531      * We want to make sure that all calls from this provider that requires
532      * a library context use the same context as the one used to call our
533      * functions.  We do that by passing it along as the provider context.
534      */
535     *provctx = c_get_libctx(provider);
536     return 1;
537 }