createFrameCryptorKeyProvider

open fun createFrameCryptorKeyProvider(    sharedKey: Boolean,     ratchetSalt: Array<Byte>,     ratchetWindowSize: Int,     uncryptedMagicBytes: Array<Byte>,     failureTolerance: Int,     keyRingSize: Int,     discardFrameWhenCryptorNotReady: Boolean): FrameCryptorKeyProvider