Scheme | Advantages | Drawback |
Z. Hairong et al.’s Scheme [7] | It improves the computational speed. Without using the pre-computation condition verification is speedup. It does not require modular inversion operation in verification. | It improve effectively the operation speed particularly for a large no of message to be signed & verify. Verification speed is less than IDSA. |
G. Han et al.’s Scheme [8] | Value of k may not be changed for every new signature. More secure than the original scheme. | None |