fun decrypt(privateKey: Bytes, nonce: Bytes, encoded: Bytes, additionalAuthenticatedData: Bytes): Bytes (source)
AES128GCM decryption function
privateKey - the key to use for decryption
nonce - the nonce of the encrypted data
encoded - the encrypted content
additionalAuthenticatedData - the AAD that should be decrypted alongside
Return
the decrypted data