Reattack of a Certificateless Aggregate Signature Scheme with Constant Pairing Computations

Table 1

Performance comparisons.

	Sign	Verify	Aggregate verify
Zhang et al.’s scheme [22]	5𝑇𝑆	5𝑇𝑃+2𝑇𝑆	5𝑇𝑃+2𝑛𝑇𝑆
Xiong et al.’s scheme [25]	3𝑇𝑆	3𝑇𝑃+2𝑇𝑆	3𝑇𝑃+2𝑛𝑇𝑆
Our scheme	3𝑇𝑆	4𝑇𝑃+2𝑇𝑆	4𝑇𝑃+2𝑛𝑇𝑆