Integer encryptor

Details Integer encryptor Integer encryptor

1989-05-01

1990-11-20

Tarcza, Thomas H.

Cryptography

Particular algorithmic function encoding

380 43, 380 49, 380 46, H04L 900

Patent

active

049724746

ABSTRACT:
A integer encryptor and decryptor, with the integer encryptor comprising a pseudorandom source, a discrete-time source, guard-band means, and adding means. The pseudorandom source generates a random-data signal. The random-data signal is an integer that lies within a first-bounded range. The discrete-time source generates the input-data signal. The guard-band means is coupled to the discrete-time source. In response to the input-data signal, the guard-band means generates an output-data signal. For a second-limit number the guard-band means limits the output-data signal to lie within a second-bounded range. The second-limit number is less than the first-limit number. The modulo-adding means is coupled to the pseudorandom source and the guard-band means. The modulo-adding means repetitively adds the output-data signal with the random-data signal and a third-limit number and generates an encrypted-data signal. The present invention also includes an integer decryptor having a pseudorandom source and modulo-adding means. The pseudorandom source generates a negative-random-data signal. The negative-random-data signal is the negative of the random-data signal generated at the integer encryptor. A communications channel outputs a channel signal, with the channel signal being a sum of the encrypted-data signal and an error signal. Modulo-adding means is coupled to the communications channel. The modulo-adding means repetitively adds the negative-random-data signal, the channel signal, and a fourth-limit number, and generates a receiver-output-data signal.

REFERENCES:
patent: 3111579 (1963-11-01), Ehrat
patent: 3210730 (1965-10-01), Ehrat
patent: 3291908 (1966-12-01), Ehrat
patent: 3436478 (1969-04-01), Ehrat
patent: 3657476 (1972-04-01), Aiken
patent: 3808365 (1974-04-01), Ehrat
patent: 3909533 (1975-09-01), Willimann
patent: 3959592 (1976-05-01), Ehrat
patent: 4037160 (1977-07-01), Miloradovic et al.
patent: 4052565 (1977-10-01), Baxter et al.
patent: 4068089 (1978-01-01), Kuhnlien et al.
patent: 4068094 (1978-01-01), Schmid et al.
patent: 4086435 (1978-04-01), Graupe et al.
patent: 4100374 (1978-07-01), Jayant et al.
patent: 4107458 (1978-08-01), Constant
patent: 4126761 (1978-11-01), Graupe et al.
patent: 4145568 (1979-03-01), Ehrat
patent: 4145569 (1979-03-01), Ehrat
patent: 4151373 (1979-04-01), Widmer et al.
patent: 4188506 (1980-02-01), Schmid et al.
patent: 4313031 (1982-01-01), Widmer
patent: 4369434 (1983-01-01), Mueller
patent: 4379205 (1983-02-01), Wyner
patent: 4393276 (1983-07-01), Steele
patent: 4441095 (1984-04-01), Widmer et al.
patent: 4531022 (1985-07-01), Pioli
patent: 4573205 (1986-02-01), Nash
patent: 4577059 (1986-03-01), Mueller
patent: 4589131 (1986-05-01), Horvath et al.
patent: 4607375 (1986-08-01), Lee
patent: 4618982 (1986-10-01), Horvath et al.
patent: 4658096 (1987-04-01), West, Jr. et al.
patent: 4688257 (1987-08-01), Erickson
patent: 4689606 (1987-08-01), Sato
patent: 4737975 (1988-04-01), Shafer
patent: 4800590 (1989-01-01), Vaughan
patent: 4866771 (1989-09-01), Bain
patent: 4885778 (1989-12-01), Weiss
patent: 4893339 (1990-01-01), Bright et al.
S. B. Weinstein, "Sampling-Based Techniques for Voice Scrambling," 1980.
Product Description: SVX-1000 Telephone Voice Security Terminal, by Motorola.
May 1979; Aron D. Wyner; "An Analog Scrambling Scheme Which Does Not Expand Bandwidth, Pt.I-Discrete Time," IEEE Transactions on Information Theory, vol. IT-25, No. 3.
Jan. 1984; Bob Lucky; "The Awful Truth About the Technical Papermill."
1987; E. F. Brickell; P. J. Lee and Y. Yacobi, "Secure Radio Teleconference".
1987; E. F. Brickell, Y. Yacobi; "On Privacy Homomorphisms (extended Abstract)".
1987; E. F. Brickell, P. J. Lee & Y. Yacobi; "N-Party Audio Secrecy Identification and Signature".
Arvid S. Arora and David L. Cohn; notes on "A Report on Speech Scrambling for Privacy".
Product Descriptoin: 6000x Private Link Cellular Mobile Telephone, by Dallas Cellular.

Affiliated with

Also associated with

Rating

Integer encryptor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integer encryptor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integer encryptor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-460403