This is a WebAssembly (wasm) package to parse a European Digital Covid Certificate (DCC). The source is written in Rust, compiled to webassembly. Signatures are also being verified.
Use your favourite package manager to use this package in your javascript projects.
npm install dcc-wasm --save
Add the following to webpack.config.js
{
module: {
rules: [
{
test: /\.wasm$/,
type: 'webassembly/async',
}
]
},
experiments: {
asyncWebAssembly: true
}
}
Here is an example on how use this package
import { parse } from "dcc-wasm"
const parseResult = parse("HC1:6BFOXN*TS0BI$ZD-PHQ7I9AD66V5B22CH9M9ESI9XBHXK-%69LQOGI.*V76GCV4*XUA2P-FHT-HNTI4L6N$Q%UG/YL WO*Z7ON15 BM0VM.JQ$F4W17PG4.VAS5EG4V*BRL0K-RDY5RWOOH6PO9:TUQJAJG9-*NIRICVELZUZM9EN9-O9:PICIG805CZKHKB-43.E3KD3OAJ6*K6ZCY73JC3KD3ZQTWD3E.KLC8M3LP-89B9K+KB2KK3M*EDZI9$JAQJKKIJX2MM+GWHKSKE MCAOI8%MCU5VTQDPIMQK9*O7%NC.UTWA6QK.-T3-SY$NCU5CIQ 52744E09TBOC.UKMI$8R+1A7CPFRMLNKNM8JI0JPGN:0K7OOBRLY667SYHJL9B7VPO:SWLH1/S4KQQK0$5REQT5RN1FR%SHPLRKWJO8LQ84EBC$-P4A0V1BBR5XWB3OCGEK:$8HHOLQOZUJ*30Q8CD1");
if(!parseResult.successful || !parseResult.signature_valid) {
console.log(parseResult.error)
}
console.log(parseResult.data)
Would result in:
{
"1": "DE",
"4": 1643356073,
"6": 1622316073,
"-260": {
"1": {
"r": [
{
"ci": "URN:UVCI:01DE/5CWLU12RNOB9RXSEOP6FG8#W",
"is": "Robert Koch-Institut",
"co": "DE",
"tg": "840539006",
"fr": "2021-01-10",
"df": "2021-05-29",
"du": "2021-06-15"
}
],
"dob": "1964-08-12",
"nam": {
"fn": "Mustermann",
"gn": "Erika",
"fnt": "MUSTERMANN",
"gnt": "ERIKA"
},
"ver": "1.0.0"
}
}
}
The specifications of this data can be found here
Property | Type | Description |
---|---|---|
successful | bool | Will be true if the data could be parsed successfully |
signature_valid | bool | Will be true if the signature could be verifyed |
kid | string | Issuer identifier |
algorithm | number | The algorithm to sign the data |
data | unknown | The data in the health certificate |
- Clone repository
- Install
wasm-pack
by runningcurl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
in your terminal - Run
wasm-pack build --target nodejs --outdir package/node
to build the wasm package for a nodejs environment - Run
wasm-pack build --outdir package/webpack
to build the wasm package a browser package
wasm-pack test --node
wasm-pack test --firefox --headless
Follow these steps from the root dir to run the javascript tests
wasm-pack build --target nodejs --outdir package/node
to build- change directory to package
cd package
npm install
npm run test
to run the tests