 }
 
 private final class HMACV3 {
-    var context: CCHmacContext = CCHmacContext()
+    var context = CCHmacContext()
 
     init(key: Data) {
         key.withUnsafeBytes {


private final class DecryptorEngineV3 {
    private let buffer = OverflowingBuffer(capacity: V3.hmacSize)
    private var hmac: HMACV3
    private var engine: Engine

    init(encryptionKey: Data, hmacKey: Data, iv: Data, header: Data) {
        precondition(encryptionKey.count == V3.keySize)

    /// "the latest encryptor" with a password, use `Encryptor` instead.
    @objc(RNEncryptorV3)
    public final class EncryptorV3 : NSObject, RNCryptorType {
        private let engine: Engine
        private let hmac: HMACV3
        private var pendingHeader: Data?

        /// Creates and returns an encryptor.
