tsemrtd
simple library for eMRTD datagroups

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Warning

tsemrtd is currently in alpha stage: the lib is not very stable yet, and there may be a lot of bugs feel free to try it out, though, any feedback is appreciated!

Features

• Simple: Hides decoding process and provides simple and modern API
• Type-Safe: Most of the APIs are strictly typed to help your workflow
• Compliance: Fully complies with ICAO 9303 and ISO/IEC 19794 standards
• Supports Bun, Node.js, Deno, Browsers, Cloudflare Workers
• Supports CSCA masterlist's (ICAO PKD)

Installation

# from NPM
npm i @li0ard/tsemrtd

# from JSR
bunx jsr add @li0ard/tsemrtd 

Usage

Get MRZ

import { DG1 } from "@li0ard/tsemrtd"

let file = await Bun.file("EF_DG1.bin").bytes()
let data = DG1.load(Buffer.from(file))
console.log(data)
// P<D<<MUSTERMANN<<ERIKA<<<<<<<<<<<<<<<<<<<<<<
// C11T002JM4D<<9608122F1310317<<<<<<<<<<<<<<<6

Extract and save photo

import { DG2 } from "@li0ard/tsemrtd"

let file = await Bun.file("EF_DG2.bin").bytes()
let data = DG2.load(Buffer.from(file))

await Bun.write("image.jp2",data[0].imageData)

Supported DG's

Name	Descripion
COM	Manifest
DG1	MRZ Info
DG2	Face image
DG3	Fingerprint image (Optional)
DG4	Iris image (Optional)
DG5	Displayed image (Optional)
DG7	Signature image (Optional)
DG11	Additional personal data (Optional)
DG12	Additional document data (Optional)
DG14	EAC/PACE data (Conditionally mandatory)
DG15	Active authentication data (Conditionally mandatory)
SOD	Security object of document

Library doesn't support datagroups #6,8,9,10,13,16 because they are defined for optional information for each state.

Acknowledgements

• jmrtd - An Open Source Java Implementation of eMRTD
• ICAO 9303 - Specifications to MRTD
• ISO/IEC 19794(-4/-5/-6) - Specifications to Biometric Information Encoding (BioAPI)