<?php
include('File/ASN1.php');

$IdentityObjectMap = array('type' =>FILE_ASN1_TYPE_SEQUENCE,
        'children'=> array(
            'identityIdentificationData' => array('type'=>FILE_ASN1_TYPE_SEQUENCE,
                'children'=> array(
                    'version' => array('type' => FILE_ASN1_TYPE_IA5_STRING),
                    'staticData' =>array('type' => FILE_ASN1_TYPE_SEQUENCE,
                        'children'=> array(
                            'acceptedPolicyVersion' => array('type' =>FILE_ASN1_TYPE_IA5_STRING),
                            'cardHolderID' => array('type' =>FILE_ASN1_TYPE_INTEGER),
                            'deviceSerialNumber' => array('type' => FILE_ASN1_TYPE_SEQUENCE,
                                'children'=> array(
                                    'deviceType' => array('type' =>FILE_ASN1_TYPE_INTEGER),
                                    'deviceUniqueID' => array('type' =>FILE_ASN1_TYPE_OCTET_STRING)
                                ),
                            ),
                            'appLabel' => array('type' =>FILE_ASN1_TYPE_UTF8_STRING),
                            'requestorRole' => array('type' => FILE_ASN1_TYPE_ENUMERATED,
                                'mapping' => array(
                                    'roleClient',
                                    'roleParticipant'
                                )
                            ),
                            'creationTime' => array('type' =>FILE_ASN1_TYPE_UTC_TIME)
                        )
                    )
                )
            )
        )
    );

$json = "{
 \"identityIdentificationData\":{
      \"version\":\"2.0\",
      \"staticData\":{
         \"acceptedPolicyVersion\":\"2\",
         \"cardHolderID\":11111111111,
         \"deviceSerialNumber\":{
            \"deviceType\":3,
            \"deviceUniqueID\":\"11111111\"
          },
         \"appLabel\":\"examination\",
         \"requestorRole\": \"roleClient\",
         \"creationTime\": \"January 1, 2018\"
       }
    }
}";

$IdentityObject = json_decode($json, true);

$asn1 = new File_ASN1();
echo $asn1->encodeDER($IdentityObject, $IdentityObjectMap);