---
title: "Get an RSA public key"
method: GET
path: "/publicKey"
tags: ["Manage card PIN"]
---

# Get an RSA public key

`GET /publicKey`

Get an [RSA](https://en.wikipedia.org/wiki/RSA_(cryptosystem)) public key to encrypt or decrypt card data.

 You need the RSA public key to generate the `encryptedKey` required to:
- [Change a PIN](https://docs.adyen.com/api-explorer/balanceplatform/2/post/pins/change).
- [Reveal a PIN](https://docs.adyen.com/api-explorer/balanceplatform/2/post/pins/reveal).
- [Reveal a PAN](https://docs.adyen.com/api-explorer/balanceplatform/2/post/paymentInstruments/reveal).

## Query parameters

- `purpose` string
- `format` string

## Response `200`

OK - the request has succeeded.

- PublicKeyResponse
  - `publicKey` string, required — The public key you need for encrypting a symmetric session key.
  - `publicKeyExpiryDate` string, required — The expiry date of the public key.

## Other responses

- `401` — Unauthorized - authentication required.
- `403` — Forbidden - insufficient permissions to process the request.
- `422` — Unprocessable Entity - a request validation error.
- `500` — Internal Server Error - the server could not process the request.

---

[API](https://skmtc.net/adyen/apis/balanceplatformservice.md) · [All operations](https://skmtc.net/adyen/apis/balanceplatformservice/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/adyen/balanceplatformservice/revisions/8761ac1a9aab/schema)