Based on Consortium Blockchain to Design a Credit Verifiable Cross University Course Learning System

Table 2

The computation cost analysis of the proposed scheme.

Phase role	User registration phase	Course registration phase	Course learning phase	Credit application phase	Credit verification phase
Administrator		N/A	N/A	N/A	N/A
CA		N/A	N/A	N/A	N/A
University A	N/A	N/A	N/A		N/A
University B	N/A		N/A	N/A	N/A
University C	N/A	N/A	N/A	N/A
Teacher B	N/A			N/A	N/A
Student A	N/A	N/A		N/A

: multiplication operation : asymmetric encryption. : Hash function operation : signature operation. : comparison operation.