aamva_decode.js

aamva_decode.js

// Convert AAMVA string to JSON

function aamva_decode(data) {
    var m = data.match(/^@\n\u001e\r(ANSI )(\d{6})(\d{2})(\d{2})(\d{2})/);
    if (!m) {
        return null;
    }

    var obj = {
        header: {
            IIN: m[2],
            AAMVAVersion: parseInt(m[3]),
            jurisdictionVersion: parseInt(m[4]),
            numberOfEntries: parseInt(m[5])
        }
    };

    for (var i = 0; i < obj.header.numberOfEntries; i++) {
        var offset = 21 + i * 10;
        m = data.substring(offset, offset + 10).match(/(.{2})(\d{4})(\d{4})/);
        var header = {
            subfileType: m[1],
            offset: parseInt(m[2]),
            length: parseInt(m[3])
        };
        obj[header.subfileType] = data.substring(header.offset + 2, header.offset + header.length - 1).split("\n").reduce(function (p, c) {
            p[c.substring(0,3)] = c.substring(3);
            return p;
        }, { } );
    }

    return obj;
}

aamva_decode_sample.js

// https://www.aamva.org/dl-id-card-design-standard/
// 2013 AAMVA DL/ID Card Design Standard
// D.13 Example of raw PDF417 data

var data = [
    "@\n\u001e\r",
    "ANSI 636000080002DL00410278ZV03190008DLDAQT64235789L\n",
    "DCSSAMPLE\n",
    "DDENL\n",
    "DACMICHAEL\n",
    "DDFN\n",
    "DADJOHN\n",
    "DDGN\n",
    "DCUJR\n",
    "DCAD\n",
    "DCBK\n",
    "DCDPH\n",
    "DBD06062008\n",
    "DBB06061986\n",
    "DBA12102013\n",
    "DBC1\n",
    "DAU068 in\n",
    "DAYBRO\n",
    "DAG2300 WEST BROAD STREET\n",
    "DAIRICHMOND\n",
    "DAJVA\n",
    "DAK232690000\n",
    "DCF2424244747474786102204\n",
    "DCGUSA\n",
    "DCK123456789\n",
    "DDAM\n",
    "DDB06062008\n",
    "DDC06062009\n",
    "DDD1\r",
    "ZVZVA01\r"
].join("");

aamva_decode(data);

output.txt

{
  "header": {
    "AAMVAVersion": 8,
    "IIN": "636000",
    "jurisdictionVersion": 0,
    "numberOfEntries": 2
  },
  "DL": {
    "DAQ": "T64235789L",
    "DCS": "SAMPLE",
    "DDE": "NL",
    "DAC": "MICHAEL",
    "DDF": "N",
    "DAD": "JOHN",
    "DDG": "N",
    "DCU": "JR",
    "DCA": "D",
    "DCB": "K",
    "DCD": "PH",
    "DBD": "06062008",
    "DBB": "06061986",
    "DBA": "12102013",
    "DBC": "1",
    "DAU": "068 in",
    "DAY": "BRO",
    "DAG": "2300 WEST BROAD STREET",
    "DAI": "RICHMOND",
    "DAJ": "VA",
    "DAK": "232690000",
    "DCF": "2424244747474786102204",
    "DCG": "USA",
    "DCK": "123456789",
    "DDA": "M",
    "DDB": "06062008",
    "DDC": "06062009",
    "DDD": "1"
  },
  "ZV": {
    "ZVA": "01"
  }
}