int CMS_digest_verify(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
                      unsigned int flags)
{
    BIO *cont;
    int r;
    if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_digest) {
        CMSerr(CMS_F_CMS_DIGEST_VERIFY, CMS_R_TYPE_NOT_DIGESTED_DATA);
        return 0;
    }

    if (!dcont && !check_content(cms))
        return 0;

    cont = CMS_dataInit(cms, dcont);
    if (!cont)
        return 0;
    r = cms_copy_content(out, cont, flags);
    if (r)
        r = cms_DigestedData_do_final(cms, cont, 1);
    do_free_upto(cont, dcont);
    return r;
}

The product does not encrypt sensitive or critical information before storage or transmission.