---
url: 'https://acquirer-api-docs-v4-en.pingpongx.com/en/notes/tools/sign/index.md'
description: >-
  The signature tool is used to generate signatures that comply with the
  PingPongCheckout v4 signature specification. It is suitable for all developers
  who need to upgrade to version v4, ensuring that all parameters participate in
  the signature process. Following the new signature rules can guarantee the
  security and integrity of requests.
---
# Signature Tool

::: warning Note
 In v4 <a href="/en/notes/guide/sign/" target="_blank">signature specification</a>, all parameters are required to participate in the signature. If you previously integrated with v2 or v3 versions and need to upgrade to v4, you must integrate according to the new signature rules
:::
<br/>
<br/>

<ClientOnly>
  <v4-Sign></v4-Sign>
</ClientOnly>