Communications network secure coding image/sound/text/digital word transmission technique having internal pseudo random output character table and vector swap forming reversible permutation.

摘要

The secure coding technique passes coded messages across a communications network, and the messages are decoded at the receiver. Coding is carried out using a table (T) of internal characters producing pseudo random outputs and swapping the internal vectors forming a reversible permutation of the internal alphabet. Following a set of values (SZ) of a variable Z, the vector is selected in the table and, in this vector an internal character substituted for sending.