File Details
Frequency Analysis | |
File name | Frequency Analysis |
File Description | Frequency analysis is based on the fact that, in any given stretch of written language, certain letters and combinations of letters occur with varying frequencies. Moreover, there is a characteristic distribution of letters that is roughly the same for almost all samples of that language. In a simple substitution cipher, each letter of the plaintext is replaced with another, and any particular letter in the plaintext will always be transformed into the same letter in the ciphertext. For instance, if all occurrences of the letter e turn into the letter X, a ciphertext message containing numerous instances of the letter X would suggest to a cryptanalyst that X represents e. |
Category Name | Public Health |
Subject Name | Environmental Health |
Module Name | Noise and hearing conservation |
Micro Category Name | Frequency analysis |
Level | Masters |
File Type | Video |
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