INNER CODE UNIT · TypeScript

encrypt

ecies/js · src/index.ts:19

export function encrypt(
  receiverRawPK: string | Uint8Array,
  data: Uint8Array,
  config: Config = ECIES_CONFIG
): Uint8Array {
  const curve = config.ellipticCurve;
  const ephemeralSK = new PrivateKey(undefined, curve);

  const receiverPK =
    receiverRawPK instanceof Uint8Array
      ? new PublicKey(receiverRawPK, curve)
      : PublicKey.fromHex(receiverRawPK, curve);

  const sharedKey = ephemeralSK.encapsulate(receiverPK, config.isHkdfKeyCompressed);
  const ephemeralPK = ephemeralSK.publicKey.toBytes(config.isEphemeralKeyCompressed);

  const encrypted = symEncrypt(config, sharedKey, data);
  return concatBytes(ephemeralPK, encrypted);

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