Optical encryption interface
First Claim
1. An encryption device operable to encrypt electronic data according to an algorithm, comprising:
- a first electro-optical device, receiving electronic data and converting said electronic data into a two dimensional optical imagea second electro-optical device, disposed relative to said first electro-optical device and configured to receive an optical indicia of said optical image and to produce a two dimensional electrical signal array indicative of said optical image; and
an encryption device operable to cause said electrical signal array to be encrypted according to a key to form an encrypted electrical signal array.
3 Assignments
0 Petitions
Accused Products
Abstract
An analog optical encryption system based on phase scrambling of two-dimensional optical images and holographic transformation for achieving large encryption keys and high encryption speed. An enciphering interface uses a spatial light modulator for converting a digital data stream into a two dimensional optical image. The optical image is further transformed into a hologram with a random phase distribution. The hologram is converted into digital form for transmission over a shared information channel. A respective deciphering interface at a receiver reverses the encrypting process by using a phase conjugate reconstruction of the phase scrambled hologram.
-
Citations
48 Claims
-
1. An encryption device operable to encrypt electronic data according to an algorithm, comprising:
-
a first electro-optical device, receiving electronic data and converting said electronic data into a two dimensional optical image a second electro-optical device, disposed relative to said first electro-optical device and configured to receive an optical indicia of said optical image and to produce a two dimensional electrical signal array indicative of said optical image; and an encryption device operable to cause said electrical signal array to be encrypted according to a key to form an encrypted electrical signal array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An information encryption system, comprising:
-
a first light source for producing a first signal light beam and a first reference light beam which are mutually coherent to each other; a first electro-optical spatial light modulator having a two dimensional spatial array of pixels for modulating light and being disposed to receive said first signal light beam, said first light modulator operating to convert a first serial data stream into a first two-dimensional spatial pattern on said spatial array and to impress said first spatial pattern onto said first signal light beam to form a two dimensional optical image, wherein said first signal light beam impressed with said optical image and said first reference light beam are directed to overlap and interfere with each other to produce a first interference pattern according to a first predetermined relationship between said first signal light beam and said first reference light beam; a first two-dimensional light detector array, disposed relative to said first light modulator to receive said first interference pattern and configured to convert said first interference pattern into a first electrical signal array; and an encryption device operable to cause said first electrical signal array to be encrypted according to an encryption key to form a first encrypted electrical signal array, wherein said first encrypted electrical signal array is converted into an encrypted serial digital data stream. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A method of encrypting electronic data, comprising:
-
transforming a serial stream of data into a first two-dimensional spatial array of electrical signals; using said first spatial array of electrical signals to modulate a wavefront of a signal beam to produce a modulated signal beam which carries a spatial image indicative of said first spatial array of electrical signals; providing a reference light beam which is coherent with said signal beam and propagating relative to said modulated signal beam; spatially overlapping said reference beam and said modulated signal beam according to a predetermined criterion to form interference fringes; converting said interference fringes into a second two-dimensional spatial array of electrical signals; encrypting said second spatial array of electrical signals by using a first key to form an encrypted second spatial array of electrical signals; and transforming said encrypted second spatial array of electrical signals into a serial stream of encrypted data in time domain. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. A data transmission system based on optical encryption, comprising:
-
a transmission terminal having a first two dimensional spatial light modulator operable to convert electronic data into a first two dimensional optical image in a first read light beam and a first two dimensional light detector array operable to convert a first optical hologram of said first optical image into encrypted electronic data, wherein said encrypted electronic data is produced at least in part by effecting a first phase modulation in said first optical hologram; and a receiving terminal having a second two dimensional spatial light modulator operable to convert said encrypted electronic data into a second two dimensional optical image in a second read light beam and a second two dimensional light detector array operable to convert said second optical image into said electronic data by applying a second phase modulation which removes said first phase modulation from said second optical image. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
-
-
45. An encryption system operable to encrypt electronic data according to an algorithm, comprising:
-
a two dimensional spatial light modulator operable to convert electronic data into a two dimensional optical image in a read light beam; and a two dimensional light detector array operable to convert a optical hologram of said optical image which is formed by interfering said read light beam with a reference beam into encrypted electronic data, wherein said encrypted electronic data is produced by a first encryption based on a phase scrambling mechanism and a second encryption based on formation of said optical hologram. - View Dependent Claims (46, 47, 48)
-
Specification