5 OSSL_PROVIDER-FIPS - OpenSSL FIPS provider
9 The OpenSSL FIPS provider is a special provider that conforms to the Federal
10 Information Processing Standards (FIPS) specified in FIPS 140-3. This 'module'
11 contains an approved set of cryptographic algorithms that is validated by an
12 accredited testing laboratory.
16 The implementations in this provider specifically have these properties
27 It may be used in a property query string with fetching functions such as
28 L<EVP_MD_fetch(3)> or L<EVP_CIPHER_fetch(3)>, as well as with other
29 functions that take a property query string, such as
30 L<EVP_PKEY_CTX_new_from_name(3)>.
32 It isn't mandatory to query for any of these properties, except to
33 make sure to get implementations of this provider and none other.
35 The C<fips=yes> property can be use to make sure only FIPS approved
36 implementations are used for crypto operations. This may also include
37 other non-crypto support operations that are not in the FIPS provider,
38 such as asymmetric key encoders,
39 see L<OSSL_PROVIDER-default(7)/Asymmetric Key Management>.
41 =head1 OPERATIONS AND ALGORITHMS
43 The OpenSSL FIPS provider supports these operations and algorithms:
45 =head2 Hashing Algorithms / Message Digests
49 =item SHA1, see L<EVP_MD-SHA1(7)>
51 =item SHA2, see L<EVP_MD-SHA2(7)>
53 =item SHA3, see L<EVP_MD-SHA3(7)>
55 =item KECCAK-KMAC, see L<EVP_MD-KECCAK-KMAC(7)>
59 =head2 Symmetric Ciphers
63 =item AES, see L<EVP_CIPHER-AES(7)>
67 =head2 Message Authentication Code (MAC)
71 =item CMAC, see L<EVP_MAC-CMAC(7)>
73 =item GMAC, see L<EVP_MAC-GMAC(7)>
75 =item HMAC, see L<EVP_MAC-HMAC(7)>
77 =item KMAC, see L<EVP_MAC-KMAC(7)>
81 =head2 Key Derivation Function (KDF)
85 =item HKDF, see L<EVP_KDF-HKDF(7)>
87 =item TLS13-KDF, see L<EVP_KDF-TLS13_KDF(7)>
89 =item SSKDF, see L<EVP_KDF-SS(7)>
91 =item PBKDF2, see L<EVP_KDF-PBKDF2(7)>
93 =item SSHKDF, see L<EVP_KDF-SSHKDF(7)>
95 =item TLS1-PRF, see L<EVP_KDF-TLS1_PRF(7)>
97 =item KBKDF, see L<EVP_KDF-KB(7)>
99 =item X942KDF-ASN1, see L<EVP_KDF-X942-ASN1(7)>
101 =item X942KDF-CONCAT, see L<EVP_KDF-X942-CONCAT(7)>
103 =item X963KDF, see L<EVP_KDF-X963(7)>
111 =item DH, see L<EVP_KEYEXCH-DH(7)>
113 =item ECDH, see L<EVP_KEYEXCH-ECDH(7)>
115 =item X25519, see L<EVP_KEYEXCH-X25519(7)>
117 =item X448, see L<EVP_KEYEXCH-X448(7)>
121 =head2 Asymmetric Signature
125 =item RSA, see L<EVP_SIGNATURE-RSA(7)>
127 =item X25519, see L<EVP_SIGNATURE-ED25519(7)>
129 =item X448, see L<EVP_SIGNATURE-ED448(7)>
131 =item HMAC, see L<EVP_SIGNATURE-HMAC(7)>
133 =item CMAC, see L<EVP_SIGNATURE-CMAC(7)>
137 =head2 Asymmetric Cipher
141 =item RSA, see L<EVP_ASYM_CIPHER-RSA(7)>
145 =head2 Asymmetric Key Encapsulation
149 =item RSA, see L<EVP_KEM-RSA(7)>
153 =head2 Asymmetric Key Management
157 =item DH, see L<EVP_KEYMGMT-DH(7)>
159 =item DHX, see L<EVP_KEYMGMT-DHX(7)>
161 =item DSA, see L<EVP_KEYMGMT-DSA(7)>
163 =item RSA, see L<EVP_KEYMGMT-RSA(7)>
165 =item EC, see L<EVP_KEYMGMT-EC(7)>
167 =item X25519, see L<EVP_KEYMGMT-X25519(7)>
169 =item X448, see L<EVP_KEYMGMT-X448(7)>
175 One of the requirements for the FIPS module is self testing. An optional callback
176 mechanism is available to return information to the user using
177 L<OSSL_SELF_TEST_set_callback(3)>.
179 The parameters passed to the callback are described in L<OSSL_SELF_TEST_new(3)>
181 The OpenSSL FIPS module uses the following mechanism to provide information
182 about the self tests as they run.
183 This is useful for debugging if a self test is failing.
184 The callback also allows forcing any self test to fail, in order to check that
185 it operates correctly on failure.
186 Note that all self tests run even if a self test failure occurs.
188 The FIPS module passes the following type(s) to OSSL_SELF_TEST_onbegin().
192 =item "Module_Integrity" (B<OSSL_SELF_TEST_TYPE_MODULE_INTEGRITY>)
194 Uses HMAC SHA256 on the module file to validate that the module has not been
195 modified. The integrity value is compared to a value written to a configuration
196 file during installation.
198 =item "Install_Integrity" (B<OSSL_SELF_TEST_TYPE_INSTALL_INTEGRITY>)
200 Uses HMAC SHA256 on a fixed string to validate that the installation process
201 has already been performed and the self test KATS have already been tested,
202 The integrity value is compared to a value written to a configuration
203 file after successfully running the self tests during installation.
205 =item "KAT_Cipher" (B<OSSL_SELF_TEST_TYPE_KAT_CIPHER>)
207 Known answer test for a symmetric cipher.
209 =item "KAT_AsymmetricCipher" (B<OSSL_SELF_TEST_TYPE_KAT_ASYM_CIPHER>)
211 Known answer test for a asymmetric cipher.
213 =item "KAT_Digest" (B<OSSL_SELF_TEST_TYPE_KAT_DIGEST>)
215 Known answer test for a digest.
217 =item "KAT_Signature" (B<OSSL_SELF_TEST_TYPE_KAT_SIGNATURE>)
219 Known answer test for a signature.
221 =item "PCT_Signature" (B<OSSL_SELF_TEST_TYPE_PCT_SIGNATURE>)
223 Pairwise Consistency check for a signature.
225 =item "KAT_KDF" (B<OSSL_SELF_TEST_TYPE_KAT_KDF>)
227 Known answer test for a key derivation function.
229 =item "KAT_KA" (B<OSSL_SELF_TEST_TYPE_KAT_KA>)
231 Known answer test for key agreement.
233 =item "DRBG" (B<OSSL_SELF_TEST_TYPE_DRBG>)
235 Known answer test for a Deterministic Random Bit Generator.
237 =item "Conditional_PCT" (B<OSSL_SELF_TEST_TYPE_PCT>)
239 Conditional test that is run during the generation of key pairs.
241 =item "Continuous_RNG_Test" (B<OSSL_SELF_TEST_TYPE_CRNG>)
243 Continuous random number generator test.
247 The "Module_Integrity" self test is always run at startup.
248 The "Install_Integrity" self test is used to check if the self tests have
249 already been run at installation time. If they have already run then the
250 self tests are not run on subsequent startups.
251 All other self test categories are run once at installation time, except for the
252 "Pairwise_Consistency_Test".
254 There is only one instance of the "Module_Integrity" and "Install_Integrity"
255 self tests. All other self tests may have multiple instances.
258 The FIPS module passes the following descriptions(s) to OSSL_SELF_TEST_onbegin().
262 =item "HMAC" (B<OSSL_SELF_TEST_DESC_INTEGRITY_HMAC>)
264 "Module_Integrity" and "Install_Integrity" use this.
266 =item "RSA" (B<OSSL_SELF_TEST_DESC_PCT_RSA_PKCS1>)
268 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_PCT_ECDSA>)
270 =item "DSA" (B<OSSL_SELF_TEST_DESC_PCT_DSA>)
272 Key generation tests used with the "Pairwise_Consistency_Test" type.
274 =item "RSA_Encrypt" (B<OSSL_SELF_TEST_DESC_ASYM_RSA_ENC>)
276 =item "RSA_Decrypt" (B<OSSL_SELF_TEST_DESC_ASYM_RSA_DEC>)
278 "KAT_AsymmetricCipher" uses this to indicate an encrypt or decrypt KAT.
280 =item "AES_GCM" (B<OSSL_SELF_TEST_DESC_CIPHER_AES_GCM>)
282 =item "AES_ECB_Decrypt" (B<OSSL_SELF_TEST_DESC_CIPHER_AES_ECB>)
284 =item "TDES" (B<OSSL_SELF_TEST_DESC_CIPHER_TDES>)
286 Symmetric cipher tests used with the "KAT_Cipher" type.
288 =item "SHA1" (B<OSSL_SELF_TEST_DESC_MD_SHA1>)
290 =item "SHA2" (B<OSSL_SELF_TEST_DESC_MD_SHA2>)
292 =item "SHA3" (B<OSSL_SELF_TEST_DESC_MD_SHA3>)
294 Digest tests used with the "KAT_Digest" type.
296 =item "DSA" (B<OSSL_SELF_TEST_DESC_SIGN_DSA>)
298 =item "RSA" (B<OSSL_SELF_TEST_DESC_SIGN_RSA>)
300 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_SIGN_ECDSA>)
302 Signature tests used with the "KAT_Signature" type.
304 =item "ECDH" (B<OSSL_SELF_TEST_DESC_KA_ECDH>)
306 =item "DH" (B<OSSL_SELF_TEST_DESC_KA_DH>)
308 Key agreement tests used with the "KAT_KA" type.
310 =item "HKDF" (B<OSSL_SELF_TEST_DESC_KDF_HKDF>)
312 =item "TLS13_KDF_EXTRACT" (B<OSSL_SELF_TEST_DESC_KDF_TLS13_EXTRACT>)
314 =item "TLS13_KDF_EXPAND" (B<OSSL_SELF_TEST_DESC_KDF_TLS13_EXPAND>)
316 =item "SSKDF" (B<OSSL_SELF_TEST_DESC_KDF_SSKDF>)
318 =item "X963KDF" (B<OSSL_SELF_TEST_DESC_KDF_X963KDF>)
320 =item "X942KDF" (B<OSSL_SELF_TEST_DESC_KDF_X942KDF>)
322 =item "PBKDF2" (B<OSSL_SELF_TEST_DESC_KDF_PBKDF2>)
324 =item "SSHKDF" (B<OSSL_SELF_TEST_DESC_KDF_SSHKDF>)
326 =item "TLS12_PRF" (B<OSSL_SELF_TEST_DESC_KDF_TLS12_PRF>)
328 =item "KBKDF" (B<OSSL_SELF_TEST_DESC_KDF_KBKDF>)
330 Key Derivation Function tests used with the "KAT_KDF" type.
332 =item "CTR" (B<OSSL_SELF_TEST_DESC_DRBG_CTR>)
334 =item "HASH" (B<OSSL_SELF_TEST_DESC_DRBG_HASH>)
336 =item "HMAC" (B<OSSL_SELF_TEST_DESC_DRBG_HMAC>)
338 DRBG tests used with the "DRBG" type.
340 = item "RNG" (B<OSSL_SELF_TEST_DESC_RNG>)
342 "Continuous_RNG_Test" uses this.
348 A simple self test callback is shown below for illustrative purposes.
350 #include <openssl/self_test.h>
352 static OSSL_CALLBACK self_test_cb;
354 static int self_test_cb(const OSSL_PARAM params[], void *arg)
357 const OSSL_PARAM *p = NULL;
358 const char *phase = NULL, *type = NULL, *desc = NULL;
360 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
361 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
363 phase = (const char *)p->data;
365 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
366 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
368 desc = (const char *)p->data;
370 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
371 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
373 type = (const char *)p->data;
375 /* Do some logging */
376 if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
377 BIO_printf(bio_out, "%s : (%s) : ", desc, type);
378 if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
379 || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
380 BIO_printf(bio_out, "%s\n", phase);
382 /* Corrupt the SHA1 self test during the 'corrupt' phase by returning 0 */
383 if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
384 && strcmp(desc, OSSL_SELF_TEST_DESC_MD_SHA1) == 0) {
385 BIO_printf(bio_out, "%s %s", phase, desc);
395 The FIPS provider in OpenSSL 3.1 includes some non-FIPS validated algorithms,
396 consequently the property query C<fips=yes> is mandatory for applications that
397 want to operate in a FIPS approved manner. The algorithms are:
409 L<openssl-fipsinstall(1)>,
411 L<OSSL_SELF_TEST_set_callback(3)>,
412 L<OSSL_SELF_TEST_new(3)>,
414 L<openssl-core.h(7)>,
415 L<openssl-core_dispatch.h(7)>,
420 This functionality was added in OpenSSL 3.0.
422 OpenSSL 3.0 includes a FIPS 140-2 approved FIPS provider.
424 OpenSSL 3.1 includes a FIPS 140-3 approved FIPS provider.
428 Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
430 Licensed under the Apache License 2.0 (the "License"). You may not use
431 this file except in compliance with the License. You can obtain a copy
432 in the file LICENSE in the source distribution or at
433 L<https://www.openssl.org/source/license.html>.