native] Covert AES-256 key from Uint8Array representation to hex string representation
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Authored by rohan on Sep 14 2023, 7:58 AM.

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atul
varun
bartek
ginsu

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rCOMM9a08fd6f2883: [keyserver/web/native] Covert AES-256 key from Uint8Array representation to hex…

Summary

I think it makes the most sense to handle this conversion from Uint8Array to string before encoding the data in the QR codes, so clients reading the QR code don't need to handle it. I used @bartek's helper functions in lib/media/data-utils.js to achieve this.

Addresses ENG-4934

Depends on D9181

Test Plan

Logged the URL being encoded into the QR code, and parsed out the keys to make sure they were correct

const url = 'comm://qr-code/%7B%22aes256%22%3A%22b7990e4614f46bd8958df23c5c799110fdef8bc29a9a8821de60aad9e9e72c7f%22%2C%22ed25519%22%3A%22dbe%2FGygnpkyvW0GVMqwLuaiWAL6F9yoAwS3FO2BMhls%22%7D';

const qrCodeKeysRegex = /qr-code\/(\S+)$/;
const qrCodeKeysMatch = qrCodeKeysRegex.exec(url)[1];

const keys = JSON.parse(decodeURIComponent(qrCodeKeysMatch));

console.log(keys);

Output:

{
  aes256: 'b7990e4614f46bd8958df23c5c799110fdef8bc29a9a8821de60aad9e9e72c7f',
  ed25519: 'dbe/GygnpkyvW0GVMqwLuaiWAL6F9yoAwS3FO2BMhls'
}

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Event Timeline

rohan created this revision.Sep 14 2023, 7:58 AM

Herald added subscribers: tomek, ashoat. · View Herald TranscriptSep 14 2023, 7:58 AM

rohan edited the summary of this revision. (Show Details)Sep 14 2023, 7:58 AM

rohan added reviewers: atul, varun, bartek.

rohan added a reviewer: ginsu.

rohan removed a parent revision: D9180: [keyserver] Print out a QR code to the terminal.Sep 14 2023, 8:03 AM

rohan edited the summary of this revision. (Show Details)

rohan added a parent revision: D9181: [keyserver] Generate an AES256 key (ephemeral) to encode.

Harbormaster completed remote builds in B22632: Diff 31136.Sep 14 2023, 8:16 AM

rohan requested review of this revision.Sep 14 2023, 8:16 AM

Code looks good to me, but resigning to give others a chance to review

rohan added a child revision: D9220: [keyserver] Encode the device id into the QR code.Sep 18 2023, 10:01 AM

accepting with nit inline

web/account/qr-code-login.react.js
25–26 ↗	(On Diff #31136)	i think we can name these better. maybe `rawAESKey` and `aesKeyAsHexString`. open to alternatives, just don't love calling the `Uint8Array` version of the key `aes256` same in native