swift - CryptoKit 加密文件太大而无法存储

Question

有没有办法用苹果 CryptoKit (AES.GCM) 加密一个对内存来说太大的文件？

我有一个大文件的 URL。该文件可能对内存来说太大了，因此我想使用 AES.GCM 使用此 SHA 示例中的流加密并最终解密该文件：

var hasher = SHA256()
let path = Bundle.main.path(forResource: "video", ofType: "mp4")!
let stream = InputStream(fileAtPath: path)!stream.open()
let bufferSize = 512
let buffer = UnsafeMutablePointer<UInt8>
             .allocate(capacity: bufferSize)
while stream.hasBytesAvailable {
    let read = stream.read(buffer, maxLength: bufferSize)
    let bufferPointer = UnsafeRawBufferPointer(start: buffer,
                                               count: read)
    hasher.update(bufferPointer: bufferPointer)
}
let digest = hasher.finalize()
print(digest)

目前甚至可能吗？