WalletConnect Encrypt/Decrypt/InvokeScript

[melanke]

• the dapp's WC library needs to have a utility method to encrypt
  • needs to accept an address list, turn it into a shared key and encrypt a message
  • using joe's idea of turning it into a shared key:

There’s no function in neon-js to encrypt/decrypt arbitrary messages, but I recommend we use the implementation from the now-defunct nOS protocol:
https://github.com/Splyse/nos-client/blob/develop/src/renderer/browser/util/decrypt.js
https://github.com/Splyse/nos-client/blob/develop/src/renderer/browser/util/encrypt.js
with one exception - we should make the change I suggested to the nOS devs in order to allow the sender to decrypt the messages that they sent: nos/client#1147

• use the encrypt method that Tyler sent:

https://github.com/Moonlight-io/asteroid-sdk-js/blob/master/src/helpers/encryption.ts#L50

• the wallet needs to do the invokescript method aswell
• the wallet needs to do a decrypt method to undo the encrypt that was done via dapp

[amlwwalker]

hey @melanke
be great to wake this up again.
The way I envisage using this is to encrypt a secret with the public key through WC. Then I can send that encrypted key to the rightful owner and use the secret to encrypt a file or data or whatever.
That way I can manage the encryption of larger amounts of data symmetrically, but share the encrypted secret assymetrically.
Will follow the progress of this. Hopefully its back on the table soon...

[melanke]

I was thinking about something like this:

const userPublicKey = 'abc123'
const friendPublicKey = '321cba'
const publicKeysThatCanDecrypt = [userPublicKey , friendPublicKey]

const encryptedResp = await wcSdk.encrypt("my secret message", publicKeysThatCanDecrypt)
console.log(encryptedResp) // ["message encrypted for user's key", "message encrypted for friend's key"]

const decryptedResp = await wcSdk.decrypt(encryptedResp[0])
console.log(decryptedResp) // "my secret message"

const decryptedResp = await wcSdk.decryptFromArray(encryptedResp) // will try to decrypt all messages, might take longer
console.log(decryptedResp) // { message: "my secret message", keyIndex: 0 }

[melanke]

Done