Method and apparatus for synchronizing digital messages

A method for sending a digital message comprising:

• selecting a digital message having one word;
• selecting a key word that is not the same as said one word;
• performing an exclusive-OR, operation using said key word and said one word of said digital message to obtain an exclusive-OR digital message;
• inverting the key word;
• appending said inverted key word to said exclusive-OR digital message;
• transmitting said inverted key word and said exclusive-OR digital message without a start-of-message word;
• receiving said key word and said exclusive-OR digital message;
• inverting said inverted key word to recover said key word;
• and
• performing an exclusive-OR operation using said recovered key word and said exclusive-OR digital message to recreate said digital message from said exclusive-OR digital message.

A communication system comprising:

• a transmitter;
• a receiver;
• a first processor configured to receive a digital message having at least one word and to perform an exclusive-OR operation on a key word and said at least one word in said digital message, said first processor connected to said transmitter, said key word selected from a pre-selected pool of key words;
• and
• a first memory connected to said processor, said first memory containing said preselected pool of key words, whence said first processor selects said key word, said first processor performing said exclusive-OR operation using said key word and said at least one word of said digital message to form an exclusive-OR digital message, said first processor appending said key word to said exclusive-OR digital message, said transmitter transmitting said exclusive-OR digital message with said appended key word to said receiver;
• a second processor configured to receive said digital message from said receiver and said key word and to perform an exclusive-OR operation on said message using said key word to obtain said digital message.