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
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 serializers,
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)>
107 =head2 Asymmetric Signature
111 =item DSA, see L<EVP_KEYEXCH-DSA(7)>
115 =head2 Asymmetric Cipher
119 =item RSA, see L<EVP_KEYEXCH-RSA(7)>
123 =head2 Asymmetric Key Management
127 =item DH, see L<EVP_KEYMGMT-DH(7)>
129 =item DSA, see L<EVP_KEYMGMT-DSA(7)>
131 =item RSA, see L<EVP_KEYMGMT-RSA(7)>
137 One of the requirements for the FIPS module is self testing. An optional callback
138 mechanism is available to return information to the user using
139 L<OSSL_SELF_TEST_set_callback(3)>.
141 The parameters passed to the callback are described in L<OSSL_SELF_TEST_new(3)>
143 The OpenSSL FIPS module uses the following mechanism to provide information
144 about the self tests as they run.
145 This is useful for debugging if a self test is failing.
146 The callback also allows forcing any self test to fail, in order to check that
147 it operates correctly on failure.
148 Note that all self tests run even if a self test failure occurs.
150 The FIPS module passes the following type(s) to OSSL_SELF_TEST_onbegin().
154 =item "Module_Integrity" (B<OSSL_SELF_TEST_TYPE_MODULE_INTEGRITY>)
156 Uses HMAC SHA256 on the module file to validate that the module has not been
157 modified. The integrity value is compared to a value written to a configuration
158 file during installation.
160 =item "Install_Integrity" (B<OSSL_SELF_TEST_TYPE_INSTALL_INTEGRITY>)
162 Uses HMAC SHA256 on a fixed string to validate that the installation process
163 has already been performed and the self test KATS have already been tested,
164 The integrity value is compared to a value written to a configuration
165 file after successfully running the self tests during installation.
167 =item "KAT_Cipher" (B<OSSL_SELF_TEST_TYPE_KAT_CIPHER>)
169 Known answer test for a symmetric cipher.
171 =item "KAT_Digest" (B<OSSL_SELF_TEST_TYPE_KAT_DIGEST>)
173 Known answer test for a digest.
175 =item "KAT_Signature" (B<OSSL_SELF_TEST_TYPE_KAT_SIGNATURE>)
177 Known answer test for a signature.
179 =item "KAT_KDF" (B<OSSL_SELF_TEST_TYPE_KAT_KDF>)
181 Known answer test for a key derivation function.
183 =item "KAT_KA" (B<OSSL_SELF_TEST_TYPE_KAT_KA>)
185 Known answer test for key agreement.
187 =item "DRBG" (B<OSSL_SELF_TEST_TYPE_DRBG>)
189 Known answer test for a Deterministic Random Bit Generator.
191 =item "Pairwise_Consistency_Test" (B<OSSL_SELF_TEST_TYPE_PCT>)
193 Conditional test that is run during the generation of key pairs.
197 The "Module_Integrity" self test is always run at startup.
198 The "Install_Integrity" self test is used to check if the self tests have
199 already been run at installation time. If they have already run then the
200 self tests are not run on subsequent startups.
201 All other self test categories are run once at installation time, except for the
202 "Pairwise_Consistency_Test".
204 There is only one instance of the "Module_Integrity" and "Install_Integrity"
205 self tests. All other self tests may have multiple instances.
208 The FIPS module passes the following descriptions(s) to OSSL_SELF_TEST_onbegin().
212 =item "HMAC" (B<OSSL_SELF_TEST_DESC_INTEGRITY_HMAC>)
214 "Module_Integrity" and "Install_Integrity" use this.
216 =item "RSA" (B<OSSL_SELF_TEST_DESC_PCT_RSA_PKCS1>)
218 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_PCT_ECDSA>)
220 =item "DSA" (B<OSSL_SELF_TEST_DESC_PCT_DSA>)
222 Key generation tests used with the "Pairwise_Consistency_Test" type.
224 =item "AES_GCM" (B<OSSL_SELF_TEST_DESC_CIPHER_AES_GCM>)
226 =item "TDES" (B<OSSL_SELF_TEST_DESC_CIPHER_TDES>)
228 Symmetric cipher tests used with the "KAT_Cipher" type.
230 =item "SHA1" (B<OSSL_SELF_TEST_DESC_MD_SHA1>)
232 =item "SHA2" (B<OSSL_SELF_TEST_DESC_MD_SHA2>)
234 =item "SHA3" (B<OSSL_SELF_TEST_DESC_MD_SHA3>)
236 Digest tests used with the "KAT_Digest" type.
238 =item "DSA" (B<OSSL_SELF_TEST_DESC_SIGN_DSA>)
240 =item "RSA" (B<OSSL_SELF_TEST_DESC_SIGN_RSA>)
242 =item "ECDSA" (B<OSSL_SELF_TEST_DESC_SIGN_ECDSA>)
244 Signature tests used with the "KAT_Signature" type.
246 =item "ECDH" (B<OSSL_SELF_TEST_DESC_KA_ECDH>)
248 =item "DH" (B<OSSL_SELF_TEST_DESC_KA_DH>)
250 Key agreement tests used with the "KAT_KA" type.
252 =item "HKDF" (B<OSSL_SELF_TEST_DESC_KDF_HKDF>)
254 =item "SSKDF" (B<OSSL_SELF_TEST_DESC_KDF_SSKDF>)
256 Key Derivation Function tests used with the "KAT_KDF" type.
258 =item "CTR" (B<OSSL_SELF_TEST_DESC_DRBG_CTR>)
260 =item "HASH" (B<OSSL_SELF_TEST_DESC_DRBG_HASH>)
262 =item "HMAC" (B<OSSL_SELF_TEST_DESC_DRBG_HMAC>)
264 DRBG tests used with the "DRBG" type.
270 A simple self test callback is shown below for illustrative purposes.
272 #include <openssl/self_test.h>
274 static OSSL_CALLBACK self_test_cb;
276 static int self_test_cb(const OSSL_PARAM params[], void *arg)
279 const OSSL_PARAM *p = NULL;
280 const char *phase = NULL, *type = NULL, *desc = NULL;
282 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
283 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
285 phase = (const char *)p->data;
287 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
288 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
290 desc = (const char *)p->data;
292 p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
293 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
295 type = (const char *)p->data;
297 /* Do some logging */
298 if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
299 BIO_printf(bio_out, "%s : (%s) : ", desc, type);
300 if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
301 || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
302 BIO_printf(bio_out, "%s\n", phase);
304 /* Corrupt the SHA1 self test during the 'corrupt' phase by returning 0 */
305 if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
306 && strcmp(desc, OSSL_SELF_TEST_DESC_MD_SHA1) == 0) {
307 BIO_printf(bio_out, "%s %s", phase, desc);
317 L<openssl-fipsinstall(1)>,
319 L<OSSL_SELF_TEST_set_callback(3)>,
320 L<OSSL_SELF_TEST_new(3)>,
322 L<openssl-core.h(7)>,
323 L<openssl-core_numbers.h(7)>,
328 The type and functions described here were added in OpenSSL 3.0.
332 Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
334 Licensed under the Apache License 2.0 (the "License"). You may not use
335 this file except in compliance with the License. You can obtain a copy
336 in the file LICENSE in the source distribution or at
337 L<https://www.openssl.org/source/license.html>.