---
title: "Fetch RSA encryption key"
method: GET
path: "/twcard-data/v1/clientSideEncryption/fetchEncryptingKey"
tags: ["card-sensitive-details"]
---

# Fetch RSA encryption key

`GET /twcard-data/v1/clientSideEncryption/fetchEncryptingKey`

Fetches Wise's RSA public key required for encrypting sensitive card data requests.

This key is used in the [sensitive card details flow](/guides/product/issue-cards/sensitive-card-details) to create JWE (JSON Web Encryption) payloads.

## Headers

- `X-External-Correlation-Id` string, uuid

## Response `200`

RSA encryption key retrieved successfully.

- object
  - `version` integer — Version of the encryption key.
  - `key` string — The RSA public key.

## Other responses

- `429` — Rate limit exceeded. Retry after the number of seconds specified in the `Retry-After` header.

---

[API](https://skmtc.net/wise/apis/platform-api.md) · [All operations](https://skmtc.net/wise/apis/platform-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/wise/platform-api/versions/4907a1d269ab/schema)