How to combine and split Data in swift

Asked Jan 05 '21 at 17:32

Active Jan 05 '21 at 17:49

Viewed 232 times

I am working on sending encrypted messages between two or more devices on swift. I have 3 constants of type Data: ephemeralPublicKey, ciphertext and signature I need to combine all 3 of them into 1 data, something like:

let data: Data = ephemeralPublicKey + ciphertext + signature

Then transmit this entire block of data to another device. On the new device I have to split it again back to ephemeralPublicKey, ciphertext and signature, so that I can use them to decrypt the message. I am struggling from a couple of days with this and I still don't have idea how to do it.

edited Jan 05 '21 at 17:49

Asperi

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asked Jan 05 '21 at 17:32

Dakata

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Just a general hint, you almost certainly want to use Json for something like this. – Fattie Jan 05 '21 at 17:33
(swift/ios handles JSON very well indeed - there's quite a bit to learn though, example https://stackoverflow.com/a/58634651/294884 – Fattie Jan 05 '21 at 17:34
Thank you for the idea – Dakata Jan 05 '21 at 17:51

How to combine and split Data in swift

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