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 140-2. 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
21 =item "provider=default"
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 "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)>
65 =item DES-EDE3 (TrippleDES), see L<EVP_CIPHER-DES(7)>
69 =head2 Message Authentication Code (MAC)
73 =item CMAC, see L<EVP_MAC-CMAC(7)>
75 =item GMAC, see L<EVP_MAC-GMAC(7)>
77 =item HMAC, see L<EVP_MAC-HMAC(7)>
79 =item KMAC, see L<EVP_MAC-KMAC(7)>
83 =head2 Key Derivation Function (KDF)
87 =item HKDF, see L<EVP_KDF-HKDF(7)>
89 =item SSKDF, see L<EVP_KDF-SSKDF(7)>
91 =item PBKDF2, see L<EVP_KDF-PBKDF2(7)>
93 =item TLS1-PRF, see L<EVP_KDF-TLS1-PRF(7)>
95 =item KBKDF, see L<EVP_KDF-KBKDF(7)>
103 =item DH, see L<EVP_KEYEXCH-DH(7)>
105 =item ECDH, see L<EVP_KEYEXCH-ECDH(7)>
107 =item X25519, see L<EVP_KEYEXCH-X25519(7)>
109 This has the property "provider=fips,fips=no"
111 =item X448, see L<EVP_KEYEXCH-X448(7)>
113 This has the property "provider=fips,fips=no"
117 =head2 Asymmetric Signature
121 =item DSA, see L<EVP_KEYEXCH-DSA(7)>
123 =item RSA, see L<EVP_SIGNATURE-RSA(7)>
125 =item HMAC, see L<EVP_SIGNATURE-HMAC(7)>
127 =item CMAC, see L<EVP_SIGNATURE-CMAC(7)>
131 =head2 Asymmetric Cipher
135 =item RSA, see L<EVP_KEYEXCH-RSA(7)>
139 =head2 Asymmetric Key Management
143 =item DH, see L<EVP_KEYMGMT-DH(7)>
145 =item DSA, see L<EVP_KEYMGMT-DSA(7)>
147 =item RSA, see L<EVP_KEYMGMT-RSA(7)>
153 One of the requirements for the FIPS module is self testing. An optional callback
154 mechanism is available to return information to the user using
155 L<OSSL_SELF_TEST_set_callback(3)>.
157 The parameters passed to the callback are described in L<OSSL_SELF_TEST_new(3)>
159 The OpenSSL FIPS module uses the following mechanism to provide information
160 about the self tests as they run.
161 This is useful for debugging if a self test is failing.
162 The callback also allows forcing any self test to fail, in order to check that
163 it operates correctly on failure.
164 Note that all self tests run even if a self test failure occurs.
166 The FIPS module passes the following type(s) to OSSL_SELF_TEST_onbegin().
170 =item "Module_Integrity" (B<OSSL_SELF_TEST_TYPE_MODULE_INTEGRITY>)
172 Uses HMAC SHA256 on the module file to validate that the module has not been
173 modified. The integrity value is compared to a value written to a configuration
174 file during installation.
176 =item "Install_Integrity" (B<OSSL_SELF_TEST_TYPE_INSTALL_INTEGRITY>)
178 Uses HMAC SHA256 on a fixed string to validate that the installation process
179 has already been performed and the self test KATS have already been tested,
180 The integrity value is compared to a value written to a configuration
181 file after successfully running the self tests during installation.
183 =item "KAT_Cipher" (B<OSSL_SELF_TEST_TYPE_KAT_CIPHER>)
185 Known answer test for a symmetric cipher.
187 =item "KAT_AsymmetricCipher" (B<OSSL_SELF_TEST_TYPE_KAT_ASYM_CIPHER>)
189 Known answer test for a asymmetric cipher.
191 =item "KAT_Digest" (B<OSSL_SELF_TEST_TYPE_KAT_DIGEST>)
193 Known answer test for a digest.
195 =item "KAT_Signature" (B<OSSL_SELF_TEST_TYPE_KAT_SIGNATURE>)
197 Known answer test for a signature.
199 =item "KAT_KDF" (B<OSSL_SELF_TEST_TYPE_KAT_KDF>)
201 Known answer test for a key derivation function.
203 =item "KAT_KA" (B<OSSL_SELF_TEST_TYPE_KAT_KA>)
205 Known answer test for key agreement.
207 =item "DRBG" (B<OSSL_SELF_TEST_TYPE_DRBG>)
209 Known answer test for a Deterministic Random Bit Generator.
211 =item "Pairwise_Consistency_Test" (B<OSSL_SELF_TEST_TYPE_PCT>)
213 Conditional test that is run during the generation of key pairs.
215 =item "Continuous_RNG_Test" (B<OSSL_SELF_TEST_TYPE_CRNG>)
217 Continuous random number generator test.
221 The "Module_Integrity" self test is always run at startup.
222 The "Install_Integrity" self test is used to check if the self tests have
223 already been run at installation time. If they have already run then the
224 self tests are not run on subsequent startups.
225 All other self test categories are run once at installation time, except for the
226 "Pairwise_Consistency_Test".
228 There is only one instance of the "Module_Integrity" and "Install_Integrity"
229 self tests. All other self tests may have multiple instances.
232 The FIPS module passes the following descriptions(s) to OSSL_SELF_TEST_onbegin().
236 =item "HMAC" (B<OSSL_SELF_TEST_DESC_INTEGRITY_HMAC>)
238 "Module_Integrity" and "Install_Integrity" use this.
240 =item "RSA" (B<OSSL_SELF_TEST_DESC_PCT_RSA_PKCS1>)
242 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_PCT_ECDSA>)
244 =item "DSA" (B<OSSL_SELF_TEST_DESC_PCT_DSA>)
246 Key generation tests used with the "Pairwise_Consistency_Test" type.
248 =item "RSA_Encrypt" (B<OSSL_SELF_TEST_DESC_ASYM_RSA_ENC>)
250 =item "RSA_Decrypt" (B<OSSL_SELF_TEST_DESC_ASYM_RSA_DEC>)
252 "KAT_AsymmetricCipher" uses this to indicate an encrypt or decrypt KAT.
254 =item "AES_GCM" (B<OSSL_SELF_TEST_DESC_CIPHER_AES_GCM>)
256 =item "TDES" (B<OSSL_SELF_TEST_DESC_CIPHER_TDES>)
258 Symmetric cipher tests used with the "KAT_Cipher" type.
260 =item "SHA1" (B<OSSL_SELF_TEST_DESC_MD_SHA1>)
262 =item "SHA2" (B<OSSL_SELF_TEST_DESC_MD_SHA2>)
264 =item "SHA3" (B<OSSL_SELF_TEST_DESC_MD_SHA3>)
266 Digest tests used with the "KAT_Digest" type.
268 =item "DSA" (B<OSSL_SELF_TEST_DESC_SIGN_DSA>)
270 =item "RSA" (B<OSSL_SELF_TEST_DESC_SIGN_RSA>)
272 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_SIGN_ECDSA>)
274 Signature tests used with the "KAT_Signature" type.
276 =item "ECDH" (B<OSSL_SELF_TEST_DESC_KA_ECDH>)
278 =item "DH" (B<OSSL_SELF_TEST_DESC_KA_DH>)
280 Key agreement tests used with the "KAT_KA" type.
282 =item "HKDF" (B<OSSL_SELF_TEST_DESC_KDF_HKDF>)
284 =item "SSKDF" (B<OSSL_SELF_TEST_DESC_KDF_SSKDF>)
286 Key Derivation Function tests used with the "KAT_KDF" type.
288 =item "CTR" (B<OSSL_SELF_TEST_DESC_DRBG_CTR>)
290 =item "HASH" (B<OSSL_SELF_TEST_DESC_DRBG_HASH>)
292 =item "HMAC" (B<OSSL_SELF_TEST_DESC_DRBG_HMAC>)
294 DRBG tests used with the "DRBG" type.
296 = item "RNG" (B<OSSL_SELF_TEST_DESC_RNG>)
298 "Continuous_RNG_Test" uses this.
304 A simple self test callback is shown below for illustrative purposes.
306 #include <openssl/self_test.h>
308 static OSSL_CALLBACK self_test_cb;
310 static int self_test_cb(const OSSL_PARAM params[], void *arg)
313 const OSSL_PARAM *p = NULL;
314 const char *phase = NULL, *type = NULL, *desc = NULL;
316 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
317 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
319 phase = (const char *)p->data;
321 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
322 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
324 desc = (const char *)p->data;
326 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
327 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
329 type = (const char *)p->data;
331 /* Do some logging */
332 if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
333 BIO_printf(bio_out, "%s : (%s) : ", desc, type);
334 if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
335 || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
336 BIO_printf(bio_out, "%s\n", phase);
338 /* Corrupt the SHA1 self test during the 'corrupt' phase by returning 0 */
339 if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
340 && strcmp(desc, OSSL_SELF_TEST_DESC_MD_SHA1) == 0) {
341 BIO_printf(bio_out, "%s %s", phase, desc);
351 L<openssl-fipsinstall(1)>,
353 L<OSSL_SELF_TEST_set_callback(3)>,
354 L<OSSL_SELF_TEST_new(3)>,
356 L<openssl-core.h(7)>,
357 L<openssl-core_dispatch.h(7)>,
362 The type and functions described here were added in OpenSSL 3.0.
366 Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
368 Licensed under the Apache License 2.0 (the "License"). You may not use
369 this file except in compliance with the License. You can obtain a copy
370 in the file LICENSE in the source distribution or at
371 L<https://www.openssl.org/source/license.html>.