NSSIA: A New Self-Sovereign Identity Scheme with Accountability

Table 2

Property comparison.

Schemes	Existence	Ownership	Protection	Persistence	Portability	Standard
[17]	N	Y	P	Y	P	P
[22]	N	Y	P	Y	–	P
[23]	Y	P	Y	–	–	N
[26]	Y	Y	P	Y	P	P
[28]	P	Y	P	Y	–	P
ours	Y	Y	Y	Y	Y	Y

aThe “Y” and “N” symbols, respectively, indicate that a certain property is satisfied or not in the corresponding scheme. The “P” symbol indicates that part of the property is satisfied. The “–” symbol shows that there is no obvious information about whether the property is satisfied or not.