Antitampering Scheme of Evidence Transfer Information in Judicial System Based on Blockchain

Table 4

Meaning of symbols in our scheme.

C1	The sender of the evidence
C2	The receiver of the evidence
evidence hashi	The hash value of the ith evidence included in the transaction
N	The number of evidences in the transaction
M (X)	A function that generates a Merkel tree for data set X
T	A symbol representing a Merkel tree
Root (T)	A function returning the root of Merkel tree T
H	A hash function
P	The data of this transaction.
Transaction ID	The ID of this transaction
R	A symbol whose value is equal to H (Root (T))
E (r1, r2)	An encryption function that uses key r1 to encrypt plaintext r2
SC	The private key of client C
bufsender	A buffer storing the information that a client sends out but has not confirmed by the receiver.
bufreceiver	A buffer storing the information that a client receives but has not recorded on the blockchain.
ACK	The acknowledgement message of a transaction.