---
url: >-
  https://acquirer-api-docs-v4-en.pingpongx.com/en/notes/technicalterm/salt/index.md
description: >-
  salt serves as the merchant key for PingPong, used to verify PingPongCheckout
  API calls. After registration is completed, merchants can log in to the
  backend to view and manage their salt in Key Management. If a key leak is
  discovered, a new key can be generated using the refresh function to ensure
  security.
---
## Purpose of salt
salt is the merchant key for PingPong and serves as the credential for PingPongCheckout API calls. It must be properly stored and protected against leakage!

## salt Retrieval
The pingPong merchant registration must be completed before retrieval is possible. You can refer to the <a href="/en/notes/appendix/register/" target="_blank">registration process</a>.
Merchants who have already completed registration can directly log in to the <a href="https://checkout.pingpongx.com/aq/login" target="_blank">merchant backend</a>, click on Key Management to view it. The specific location is shown in the screenshot below:

<v4-iImage src="/register/secret.png" name="View Key"></v4-iImage>
<v4-iImage src="/register/secretRefresh.png" name="Retrieve Key"></v4-iImage>

Notes:

:::note Attention
If there is a situation where the key has been leaked, you can click to view the key and then refresh it. After refreshing, simply replace it with the new key.
:::