Cryptanalysis and Performance Evaluation of Enhanced Threshold Proxy Signature Scheme Based on RSA for Known Signers

Table 9

Histogram analysis for the GENGVRF threshold proxy signature schemes.

Number	Substring	Frequency (in %)	Frequency
1	N	10.9658	587
2	I	9.4153	504
3	T	9.079	486
4	S	8.3878	449
5	E	7.9208	424
6	R	7.1175	381
7	O	4.7076	252
8	A	4.5769	245
9	C	3.9978	214
10	U	3.6802	197
11	F	3.5681	191
12	P	3.5494	190
13	G	3.4747	186
14	L	2.989	160
15	D	2.8956	155
16	H	2.7835	149
17	M	2.3538	126
18	Y	1.8121	97
19	X	1.4945	80
20	V	1.3824	74
21	J	0.9714	52
22	B	0.8967	48
23	W	0.7659	41
24	K	0.7286	39
25	Q	0.411	22
26	Z	0.0747	4