Index Of Up 2009 -

$$IC = \frac{\sum_{i=1}^{26} f_i(f_i-1)}{N(N-1)}$$

After calculating the IC, we get a value of 0.065. This suggests that the text is likely encrypted. index of up 2009

Suppose we have a text that reads: "GUR PENML XRL VF ZL FRPERG CBFG". We can calculate the IC of this text using the formula above. index of up 2009

The IC is calculated using the following formula: index of up 2009