Re: [EXTERNAL] Re: Not able to perform FIPS self-tests

[Dr Paul Dale <pauli@xxxxxxxxxxx>]

    Shane Lontis suggested this:
    
> Don't return 0 during the Corruption phase unless you
>         are trying to deliberately make it fail.
>       
>       
>       
>         OSSL_PROVIDER_self_test() can be used to run the self tests on
>         demand.
>     
    
    
    
    Dr Paul Dale

On 11/2/22 17:23, Gahlot, Ashish Kumar wrote:

Hi,

 

Thanks Pauli, the API worked but also I have a callback defined as below which is failing at corrupt phase:

 

int SelfTestCb(const OSSL_PARAM params[], void *arg)

{

    int ret = 0;

    const OSSL_PARAM *p = NULL;

    const char *phase = NULL;

    const char *type = NULL;

    const char *desc = NULL;

    //BIO *bio_out = BIO_new_file("FipsSelfTestFile.txt", "w");

 

    p = OSSL_PARAM_locate_const(params, OSSL_PROV_PARAM_SELF_TEST_PHASE);

    if ((p == NULL) || (arg) || (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)

        syslog(LOG_NOTICE, "%s : (%s) : ", desc, type);

    if ((strcmp(phase, OSSL_SELF_TEST_PHASE_PASS) == 0)

            || (strcmp(phase, OSSL_SELF_TEST_PHASE_FAIL) ==0))

        syslog(LOG_NOTICE, "%s\n", phase);

 

    /* Corrupt the SHA1 self-test during the 'corrupt' phase by returning 0 */

    if (strcmp(phase, OSSL_SELF_TEST_PHASE_CORRUPT) == 0){                // ß--------------THIS FAILS

        syslog(LOG_NOTICE, "%s %s", phase, desc);

        return 0;

        }

    ret = 1;

err:

    return ret;

}

 

Thanks,

Ashish

 

From: openssl-users <openssl-users-bounces@xxxxxxxxxxx> On Behalf Of Dr Paul Dale
Sent: Tuesday, February 8, 2022 1:35 PM
To: openssl-users@xxxxxxxxxxx
Subject: [EXTERNAL] Re: Not able to perform FIPS self-tests

 

Have you considered using the provided for this: OSSL_PROVIDER_self_test()?
https://www.openssl.org/docs/man3.0/man3/OSSL_PROVIDER.html

Pauli

On 8/2/22 17:41, Gahlot, Ashish Kumar wrote:

Hello All,

 

I’m trying to execute self-tests that FIPS runs after installation manually by calling the APIs. I’m using code from https://github.com/openssl/openssl/blob/7cce994d3e57345ba729388b9321d9bf8b661b4f/providers/fips/self_test_kats.c but I’m getting NULL when I’m trying to fetch the encryption algorithm. Is there a way to perform self-tests that FIPS runs after installation because I did not find any code in fipsinstall.c where it is directly calling the APIs.

 

 

int self_test_digest(const ST_KAT_DIGEST *t, OSSL_SELF_TEST *st, OSSL_LIB_CTX *libctx)

{

 

    int ok = 0;

    unsigned char out[EVP_MAX_MD_SIZE];

    unsigned int out_len = 0;

    EVP_MD_CTX *ctx = EVP_MD_CTX_new();

    EVP_MD *md = EVP_MD_fetch(libctx, t->algorithm, NULL);

 

    OSSL_SELF_TEST_onbegin(st, OSSL_SELF_TEST_TYPE_KAT_DIGEST, t->desc);

 

    if (ctx == NULL)

    {syslog(LOG_NOTICE, "ctx NULL"); goto err;}

 

    if (md == NULL)

    {syslog(LOG_NOTICE, "md is NULL"); goto err;}    //  <-------------------  This is getting failed!

 

    if (!EVP_DigestInit_ex(ctx, md, NULL))

    {syslog(LOG_NOTICE, "digest failed"); goto err;}

 

    if (!EVP_DigestUpdate(ctx, sha1_pt, t->pt_len))

    {syslog(LOG_NOTICE, "digest update failed"); goto err;}

 

    if (!EVP_DigestFinal(ctx, out, &out_len))

    {syslog(LOG_NOTICE, "digest final failed"); goto err;}

 

    /* Optional corruption */

    OSSL_SELF_TEST_oncorrupt_byte(st, out);

    for (int i=0; i < (int)t->expected_len; i++)

   {syslog(LOG_NOTICE, "%x", out[i]);}

 

    if (out_len != t->expected_len

            || memcmp(out, sha1_digest, out_len) != 0)

        goto err;

    ok = 1;

err:

    EVP_MD_free(md);

    EVP_MD_CTX_free(ctx);

    OSSL_SELF_TEST_onend(st, ok);

    return ok;

}

 

static int self_test_digests(OSSL_LIB_CTX *libctx)

{

    OSSL_SELF_TEST *st = NULL;

    st = OSSL_SELF_TEST_new(SelfTestCb, NULL);

    if (st == NULL)

        syslog(LOG_NOTICE, "OSSL_SELF_TEST_new failed");

    int i, ret = 1;

 

    for (i = 0; i < (int)OSSL_NELEM(st_kat_digest_tests); ++i) {

        if (!self_test_digest(&st_kat_digest_tests[i], st, libctx))

            ret = 0;

    }

    return ret;

}

 

if (!EVP_default_properties_enable_fips(libctx,1))

{

                ...

}

 

self_test_digests(libctx);

 

Thanks,

Ashish

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Notice: This e-mail together with any attachments may contain information of Ribbon Communications Inc. and its Affiliates that is confidential and/or proprietary for the sole use of the intended recipient. Any review, disclosure, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please notify the sender immediately and then delete all copies, including any attachments.