What are the ways to implement Diffie Hellman to generate public and private key in iOS swift/Objective C?(Other than Chilkat)

Question

The requirement is, there would be two devices(alice and bob)generates public and private keys using diffie hellman. public keys would get exchanged bewteen both the devices (alice and bob) and generate a secret key with their private keys.

This is for iOS, either in Objective C or Swift. I have tried with raorafat(GitHub code) and other source codes; however, no solution was really drawn for my requirement.

One thing if I share my public key to server how would server deal with my public key to generate symmetric key.

score 0 · Answer 1 · answered Jul 04 '19 at 11:21

0

You can use Apple's CommonCrypto library from Swift. For example of using CCDH, see https://opensource.apple.com/source/CommonCrypto/CommonCrypto-60118.50.1/test/CommonCrypto/CommonDHtest.c.auto.html

You can import it using

import CommonCrypto

in your Swift project.

answered Jul 04 '19 at 11:21

John Doe

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Do you have any code for this? If so can you share here once. – Pavan Kumar Jul 05 '19 at 05:26
I think you should look to `SecKeyCopyKeyExchangeResult` for a modern and secure approach and also Apple reccomendation – Fabiosoft Apr 13 '20 at 17:41

What are the ways to implement Diffie Hellman to generate public and private key in iOS swift/Objective C?(Other than Chilkat)

1 Answers1