The EverCrack Language Identification Tools works by calculating the Index of
Coincidence of the cipher text [the Index of Coincidence is a value derived
from frequency analysis that determining the relative distribution of letters
in the cipher text .
Each language has a specific IOC because the letters of each language have a
specific frequency distribution. The IOC value [of the cipher text] is com-
pared to the IOC values of different languages; The language which varies the
least from the IOC value of the cipher text is chosen as the most probable.
| Language |
IOC |
| English |
.06689 |
| German |
.07666 |
| Spanish |
.07661 |
| French |
.07460 |
| Swedish |
.06448 |
| Italian |
.07329 |
| Dutch |
.07980 |
| Portuguese |
.07452 |