Securing Messages

Sending a more secure Telegram without breaking the bank!

You don't care if your Telegram is seen,  if the message text is already encrypted.   To make this work the sender and receiver need to agree on two things:

1)   A document that will be used as the coding key.   Preferably a short document,  original,  unpublished,  and "never scanned".

2)   Easy to remember encoding / decoding rules that are not written down,  and only known to the sender and receiver.

The coding key document and the encoding / decoding rules MUST be kept private,  while the message can be made public.   With the key and rules unknown and not part of the digital world,  the message is useless,  even to all of the world's computers processing power combined.

Using encoding rules,  each letter,  space and punctuation mark is transposed into a digit group.   These number sets are then sent to the recipient,  who uses the same rules to decode the number sets back to the corresponding letter,  space or punctuation mark.   Be sure to use a different encoding digit set for each repeat character,  so that each use of an 'e' does not end up being the same set of digits!

Let's say we want to send the message 'cat and mouse.'   Then we might select the book "Big Ear Two" by John Kraus,  and set the rules for each digit group to be plcc,  where p = page number 120-129,  l = line number 1-9 then 0,  and cc = character number.   Then  'cat and mouse.'  would encode as . . .

7439  0906  1324  7211  3834  8101  9622  6018  4849  2320  6441  4435  5516  3209

Do not pick a coding key document that is a published source.   Why?   Because digitized sources can be used to attempt to decipher the message.