Patent ID: 11146387

Abstract:
The present innovative solution increases security to interceptor attacks and loss of cipher-characters, while not negatively impacting the processing resource and time requirements of cryptography processes. A novel Synchronous and Self-Synchronous Random Position Cipher (RPC) with arbitrary length key cryptography methodology and apparatus are presented which are based on a novel Aperiodic Pseudo-Random Number Generator (APRNG) using large seed numbers. The RPC does not replace plaintext characters with encryption characters but with the number of pseudo-random numbers that need to be generated by the APRNG to match the ASCII codes of the characters in the plaintext. Decryption uses the number of pseudo-random numbers that need to be generated by the APRNG to match the ASCII codes of the plaintext characters. Variations to the starting and reset points for the counter are also presented for improving performance when cipher-characters are lost and for avoiding increasing the size of the ciphertext as opposed to the basic methodology.