# ZYMKEY 4 - custom key pair based on public key **URL:** \ **Category:** ZYMKEY4\ **Created:** [February 3, 2023, 10:48am UTC](https://community.zymbit.com/t/zymkey-4-custom-key-pair-based-on-public-key/1497 "2023-02-03T10:48:40Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![swakv](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@swakv](https://community.zymbit.com/u/swakv)\ **Post date:** [February 3, 2023, 10:48am UTC](https://community.zymbit.com/t/zymkey-4-custom-key-pair-based-on-public-key/1497/1 "2023-02-03T10:48:40Z")
If I have two Zymkeys, can i generate a public key on one and generate the same public, private key pair in the other based on the public key of the first one? ---
**Author:** ![Bob\_of\_Zymbit](https://avatars.discourse-cdn.com/v4/letter/b/82dd89/32.png) [@Bob\_of\_Zymbit](https://community.zymbit.com/u/Bob_of_Zymbit)\ **Post date:** [February 3, 2023, 4:13pm UTC](https://community.zymbit.com/t/zymkey-4-custom-key-pair-based-on-public-key/1497/2 "2023-02-03T16:13:47Z")
@swakv - Each zymkey contains three unique private keys that can be used to generate a public key to pair with it. You cannot generate a new private key to match from a public key. Can you email [support@zymbit.com](mailto:support@zymbit.com) with your application? I or someone else in customer support will pick up there and come up with a best solution for you, and update the community later. ---
**Author:** ![swakv](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@swakv](https://community.zymbit.com/u/swakv)\ **Post date:** [February 6, 2023, 2:26am UTC](https://community.zymbit.com/t/zymkey-4-custom-key-pair-based-on-public-key/1497/3 "2023-02-06T02:26:16Z")
@Bob_of_Zymbit Thank you for your reply! I shall email as you suggested. Thanks again for your assistance