Encrypt AES Key with RSA

Encrypt an AES Key with an RSA Public Key

The encryptAESKeyWithRSA performs asymmetric encryption using an RSA Public Key and the RSA-OAEP algorithm. The permissions are requested with the help of the Arweave Wallet (Window Object) in a browser environment if no wallet or use_wallet is passed. The node environment expects Arweave JWK to be passed.

Installation of ArConnect is suggested for successful use of this function in a browser environment.

Asymmetric encryption is optimal for the encryption of strings (such as the AES key received in the previous function).

Basic Syntax

The function is called as follows:

import { encryptAESKeyWithRSA } from 'arweavekit/encryption';

const encryptedAESKey = await encryptAESKeyWithRSA({params});

Input Parameters

The following params are available for this function and they must be passed in as an object:

  • key: string : The AES key used to encrypt data using the encryptDataWithAES function.

  • wallet: ArWallet(optional): A value of type JWKInterface or use_wallet can be passed. If use_wallet or nothing is passed to this param, it expects ArConnect to be installed to run the encryption successfully.

// In a browser environment, use_wallet or nothing can be passed.
const wallet = "use_wallet"
// In a node environment, Arweave wallet JWK can be used.
const wallet = JSON.parse(fs.readFileSync('wallet.json').toString());

const encryptedAESKey = await encryptAESKeyWithRSA({
    key: string,

This encrypts the provided AES Key using the RSA-OAEP algorithm.

Returned Data

The function call returns the following data:

    encryptedKey: Uint8Array,
  • encryptedKey: Uint8Array : The AES key encrypted using an RSA Public Key.

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