So much has been written by greater minds than mine about secure communication in a crisis. There are many publicly available resources and information on SurvivalBlog and elsewhere. Shifting letters in a message a certain number of characters is nothing new (Caesar Cipher, used in the last century B.C.). Using the SAME count to shift letters is a guaranteed way to have your encryption broken. Using different numbers to shift each letter in a message (a One Time Pad) – when your recipient has the same list of numbers to decrypt the message – is theoretically unbreakable, if you do …
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