[Retracted] An Automated Data Desensitisation System Based on the Middle Platform

Table 6

Encoding structure and original classification of sensitive data.

No.	Sensitive data item	Encoding structure and rule	Example
1	Client’s no	10-digit serial number	0257349261	1
2	Mobile no.	11 digits, 3-digit network identifier + 4-digit area code + 4-digit serial number	13088886666	3
3	Bank card no.	13–19 digits, issuing bank number + card type number + serial number	9558801202106562334	4
4	Electricity address	City + district/county + street/town + community/village + road + house number	16th floor, no. 56, Huaqiao road, Gulou district, Nanjing	3
5	Electricity consumption	Random number	250, 374, 499	2
6	Settlement date	8 digits, 4-digit “year” + 2-digit “month” + 2-digit “day”	20210101	1