Code for the article: "Protecting secrets in an Android project"

EncryptionEngine.kt

fun encrypt(message: String): ByteArray {
  val encryptionKey = generateKey()
  val cell = SecureCell(encryptionKey, SecureCell.MODE_SEAL)
  val protectedData = cell.protect(
    encryptionContext, message.toByteArray()
  )
  return protectedData.protectedData
}

private val encryptionContext: ByteArray? = null