Simple encrypted transmission system suitable for...

Details Simple encrypted transmission system suitable for... Simple encrypted transmission system suitable for...

2007-06-05

2007-06-05

Moise, Emmanuel L. (Department: 2137)

Cryptography

Communication system using cryptography

Pseudo-random sequence scrambling

C380S044000, C380S047000, C713S171000

Reexamination Certificate

active

11337540

ABSTRACT:
A signal transmitted from a first device to a second device is encrypted using an encryption key generated from a preceding part of the signal itself. The signal is decrypted in the second device using a decryption key generated from a preceding part of the received and decrypted signal. This encryption method provides effective privacy protection, because the encryption and decryption keys are constantly changing. Since the transmitted signal provides its own encryption and decryption keys, the method is inexpensive to implement, and can be used in systems such as packet transmission systems that transmit signals intermittently.

REFERENCES:
patent: 4125744 (1978-11-01), Goodall
patent: 4893339 (1990-01-01), Bright et al.
patent: 5204903 (1993-04-01), Okada et al.
patent: 5696826 (1997-12-01), Gao
patent: 5809147 (1998-09-01), De Lange et al.
patent: 05-007202 (1993-01-01), None

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