pk_decrypt
actual fun pk_decrypt(decryption: OlmPkDecryptionPointer, ephemeralKey: ByteArray, mac: ByteArray, cipherText: ByteArray, plainText: ByteArray): ULong
actual fun pk_decrypt(decryption: OlmPkDecryptionPointer, ephemeralKey: ByteArray, mac: ByteArray, cipherText: ByteArray, plainText: ByteArray): ULong
expect fun pk_decrypt(decryption: OlmPkDecryptionPointer, ephemeralKey: ByteArray, mac: ByteArray, cipherText: ByteArray, plainText: ByteArray): ULong