NAME

DESCRIPTION

OPERATIONS AND ALGORITHMS

SELF TESTING

The parameters passed to the callback are described in OSSL_SELF_TEST_new(3)

The OpenSSL FIPS module uses the following mechanism to provide information about the self tests as they run. This is useful for debugging if a self test is failing. The callback also allows forcing any self test to fail, in order to check that it operates correctly on failure. Note that all self tests run even if a self test failure occurs.

The FIPS module passes the following type(s) to OSSL_SELF_TEST_onbegin().

"Module_Integrity" (OSSL_SELF_TEST_TYPE_MODULE_INTEGRITY)

Uses HMAC SHA256 on the module file to validate that the module has not been modified. The integrity value is compared to a value written to a configuration file during installation.

"Install_Integrity" (OSSL_SELF_TEST_TYPE_INSTALL_INTEGRITY)

Uses HMAC SHA256 on a fixed string to validate that the installation process has already been performed and the self test KATS have already been tested, The integrity value is compared to a value written to a configuration file after successfully running the self tests during installation.

"KAT_Cipher" (OSSL_SELF_TEST_TYPE_KAT_CIPHER)

Known answer test for a symmetric cipher.

"KAT_AsymmetricCipher" (OSSL_SELF_TEST_TYPE_KAT_ASYM_CIPHER)

Known answer test for a asymmetric cipher.

"KAT_Digest" (OSSL_SELF_TEST_TYPE_KAT_DIGEST)

Known answer test for a digest.

"KAT_Signature" (OSSL_SELF_TEST_TYPE_KAT_SIGNATURE)

Known answer test for a signature.

"PCT_Signature" (OSSL_SELF_TEST_TYPE_PCT_SIGNATURE)

Pairwise Consistency check for a signature.

"KAT_KDF" (OSSL_SELF_TEST_TYPE_KAT_KDF)

Known answer test for a key derivation function.

"KAT_KA" (OSSL_SELF_TEST_TYPE_KAT_KA)

Known answer test for key agreement.

"DRBG" (OSSL_SELF_TEST_TYPE_DRBG)

Known answer test for a Deterministic Random Bit Generator.

"Conditional_PCT" (OSSL_SELF_TEST_TYPE_PCT)

Conditional test that is run during the generation of key pairs.

"Continuous_RNG_Test" (OSSL_SELF_TEST_TYPE_CRNG)

Continuous random number generator test.

The "Module_Integrity" self test is always run at startup. The "Install_Integrity" self test is used to check if the self tests have already been run at installation time. If they have already run then the self tests are not run on subsequent startups. All other self test categories are run once at installation time, except for the "Pairwise_Consistency_Test".

There is only one instance of the "Module_Integrity" and "Install_Integrity" self tests. All other self tests may have multiple instances.

The FIPS module passes the following descriptions(s) to OSSL_SELF_TEST_onbegin().

"HMAC" (OSSL_SELF_TEST_DESC_INTEGRITY_HMAC)

"Module_Integrity" and "Install_Integrity" use this.

"RSA" (OSSL_SELF_TEST_DESC_PCT_RSA_PKCS1)

"ECDSA" (OSSL_SELF_TEST_DESC_PCT_ECDSA)

"DSA" (OSSL_SELF_TEST_DESC_PCT_DSA)

Key generation tests used with the "Pairwise_Consistency_Test" type.

"RSA_Encrypt" (OSSL_SELF_TEST_DESC_ASYM_RSA_ENC)

"RSA_Decrypt" (OSSL_SELF_TEST_DESC_ASYM_RSA_DEC)

"KAT_AsymmetricCipher" uses this to indicate an encrypt or decrypt KAT.

"AES_GCM" (OSSL_SELF_TEST_DESC_CIPHER_AES_GCM)

"AES_ECB_Decrypt" (OSSL_SELF_TEST_DESC_CIPHER_AES_ECB)

"TDES" (OSSL_SELF_TEST_DESC_CIPHER_TDES)

Symmetric cipher tests used with the "KAT_Cipher" type.

"SHA1" (OSSL_SELF_TEST_DESC_MD_SHA1)

"SHA2" (OSSL_SELF_TEST_DESC_MD_SHA2)

"SHA3" (OSSL_SELF_TEST_DESC_MD_SHA3)

Digest tests used with the "KAT_Digest" type.

"DSA" (OSSL_SELF_TEST_DESC_SIGN_DSA)

"RSA" (OSSL_SELF_TEST_DESC_SIGN_RSA)

"ECDSA" (OSSL_SELF_TEST_DESC_SIGN_ECDSA)

Signature tests used with the "KAT_Signature" type.

"ECDH" (OSSL_SELF_TEST_DESC_KA_ECDH)

"DH" (OSSL_SELF_TEST_DESC_KA_DH)

Key agreement tests used with the "KAT_KA" type.

"HKDF" (OSSL_SELF_TEST_DESC_KDF_HKDF)

"TLS13_KDF_EXTRACT" (OSSL_SELF_TEST_DESC_KDF_TLS13_EXTRACT)

"TLS13_KDF_EXPAND" (OSSL_SELF_TEST_DESC_KDF_TLS13_EXPAND)

"SSKDF" (OSSL_SELF_TEST_DESC_KDF_SSKDF)

"X963KDF" (OSSL_SELF_TEST_DESC_KDF_X963KDF)

"X942KDF" (OSSL_SELF_TEST_DESC_KDF_X942KDF)

"PBKDF2" (OSSL_SELF_TEST_DESC_KDF_PBKDF2)

"SSHKDF" (OSSL_SELF_TEST_DESC_KDF_SSHKDF)

"TLS12_PRF" (OSSL_SELF_TEST_DESC_KDF_TLS12_PRF)

"KBKDF" (OSSL_SELF_TEST_DESC_KDF_KBKDF)

Key Derivation Function tests used with the "KAT_KDF" type.

"CTR" (OSSL_SELF_TEST_DESC_DRBG_CTR)

"HASH" (OSSL_SELF_TEST_DESC_DRBG_HASH)

"HMAC" (OSSL_SELF_TEST_DESC_DRBG_HMAC)

DRBG tests used with the "DRBG" type.

= item "RNG" (OSSL_SELF_TEST_DESC_RNG)

"Continuous_RNG_Test" uses this.

EXAMPLES

  #include <openssl/self_test.h>

  static OSSL_CALLBACK self_test_cb;

  static int self_test_cb(const OSSL_PARAM params[], void *arg)
  {
    int ret = 0;
    const OSSL_PARAM *p = NULL;
    const char *phase = NULL, *type = NULL, *desc = NULL;

    p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);
    if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
        goto err;
    phase = (const char *)p->data;

    p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_DESC);
    if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
        goto err;
    desc = (const char *)p->data;

    p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_TYPE);
    if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING)
        goto err;
    type = (const char *)p->data;

    /* Do some logging */
    if (strcmp(phase, OSSL_SELF_TEST_PHASE_START) == 0)
        BIO_printf(bio_out, "%s : (%s) : ", desc, type);
    if (strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0
            || strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) == 0)
        BIO_printf(bio_out, "%s\n", phase);

    /* Corrupt the SHA1 self test during the 'corrupt' phase by returning 0 */
    if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0
            && strcmp(desc, OSSL_SELF_TEST_DESC_MD_SHA1) == 0) {
        BIO_printf(bio_out, "%s %s", phase, desc);
        return 0;
    }
    ret = 1;
  err:
    return ret;
  }

SEE ALSO

HISTORY

COPYRIGHT

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.