Navajo Windtalkers

Using Navajo for cryptography is a very powerful tool due to the complex nature of the language. Up until the 1930’s The Navajo Languages had remained unwritten. It was not until 1939 that a standardized alphabet was created. The language also did not have any symbols. In Navajo, only four vowels exist: A, E, I, O, but each of these can have up to 10 different intonations. A word could change if the intonation in any of the vowels was changed. There are also variations of other letters. An intonation is shown by marks on the vowels. A sample of some intonations is shown in figure 1.