# Fetch RSA encryption key

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

This key is used in the sensitive card details flow to create JWE (JSON Web Encryption) payloads.

Endpoint: GET /twcard-data/v1/clientSideEncryption/fetchEncryptingKey
Security: UserToken

## Response 200 fields (application/json):

  - `version` (integer)
    Version of the encryption key.
    Example: 1

  - `key` (string)
    The RSA public key.
    Example: "<encryption key>"