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

Algorithm 2

Chaincode of evidence revocation.

Input:;//the set of IDs of the evidence to be revoked
rer,//revoker’s ID
orgr,//the organization of the revoker
orge,//the organization of the revocation recipient
Output: the endorsement result;
(1)	int ;//state array for EV
(2)	for do
(3)	ifthen
(4)	return false;
(5)	else
(6)	ifthen
(7)	ifthen
(8)	for all organization org that has higher priority than orgrdo
(9)	ifthen
(10)	if&& then
(11)	ifthen
(12)	;
(13)	end if
(14)	end if
(15)	end if
(16)	end for
(17)	end if
(18)	end if
(19)	end if
(20)	end for
(21)	ifthen
(22)	simulate the execution of the transaction;
(23)	generate the read-write set;
(24)	sign the proposal and the read-write set;
(25)	return signed endorsement file;
(26)	else
(27)	return false;
(28)	end if