BNRDT: When Data Transmission Meets Blockchain

Table 1

Notations used in this paper.

Notation	Meaning
	Sender of the message or file
	Recipient of the message or file
	The smart contract deployed on the blockchain
,	Blockchain account identifiers of and
pk , sk	Temporary key pair for asymmetric encryption
M	The short message that needs to be undeniably transmitted
F	The large file that needs to be undeniably transmitted
K	The randomly generated key for symmetric encryption
C or Cx	Ciphertext obtained by symmetric or asymmetric encryption
h or hx	Hash values
comx	Commitment value of secret x
d	The deposit paid by the participant
L	A unique label that identifies a BNRDT instance
sL	The state of protocol instance labelled with L