int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
                                   const unsigned char *id, size_t idlen)
{
    ASN1_OCTET_STRING tmp_os;
    CMS_KEKRecipientInfo *kekri;
    if (ri->type != CMS_RECIPINFO_KEK) {
        CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ID_CMP, CMS_R_NOT_KEK);
        return -2;
    }
    kekri = ri->d.kekri;
    tmp_os.type = V_ASN1_OCTET_STRING;
    tmp_os.flags = 0;
    tmp_os.data = (unsigned char *)id;
    tmp_os.length = (int)idlen;
    return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
}

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