WO1996015604B1 - Message protection system and method - Google Patents
Message protection system and methodInfo
- Publication number
- WO1996015604B1 WO1996015604B1 PCT/US1995/012403 US9512403W WO9615604B1 WO 1996015604 B1 WO1996015604 B1 WO 1996015604B1 US 9512403 W US9512403 W US 9512403W WO 9615604 B1 WO9615604 B1 WO 9615604B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- elements
- array
- mask
- encryption
- information
- Prior art date
Links
- 230000000875 corresponding Effects 0.000 claims 3
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000000873 masking Effects 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract 1
Abstract
An encryption/decryption apparatus that provides at least two masks (48, 54), each of which is used in logic/mathematic operation with information to be encrypted to preserve confidentiality. The operations include exclusive oring (114), addition (110), subtraction (112). The source of the masks can be any commonly found data, for example, the code of a music CD. In such a manner the sender may tell the receiver in private that the masks are from a particular track on a particular CD, sampled in a particular fashion, using a particular password (23). The product of the number of elements in each mask need not be greater or equal to the number of elements in the data file being encrypted. Repetition may make the decoding easier for an eavesdropper, but the use of a password character array (126) to control the use and sequencing of each set of encoding mask receptions greatly helps in maintaining the confidentiality of the data. The present invention includes use as a one-time pad and can be implemented on personal computers.
Claims
AMENDED CLAIMS
[received by the International Bureau on 3 May 1996 (03.05.96); original claims 1-54 replaced by new claims 1-54 (2 pages)]
1 . Encryption and decryption apparatus comprising: means for retrieving information to be encoded, said information defining an array D of elements, a first mask array of elements M1 and a second mask a r r a y o f e l e m e n t s M 2 , a password array of P elements, wherein the P elements are arranged to provide information for directing and controlling said encryption processing, an encoder that encodes the array of elements D in accordance with said password information, where the means for encoding includes means for performing a first operation of the elements D and the elements M1 , forming an intermediate array of elements R, and where the encoder performs a second operation on the elements R using the elements M2 whose results form a n e n c o d e d m e s s a g e , means for accessing the encoded message, and a decoder that recreates the original message from the encoded message in accordance with said password information, where the decoder performs the logical inverse of the encoder to recreate the original message.
2. Encryption apparatus as defined in claim 1 where the first operation is an "exclusive oring" and the second operation is "adding" and where the corresponding logical inverse of "adding" is "subtracting" and the corresponding logical inverse of "exclusive oring" is "exclusive oring."
3. Encryption apparatus as defined in claim 1 where the first operation is an "adding" and the second operation is "exclusive oring", and where the corresponding logical
6 6
elements of the first mask array and the second counter output selects the elements of the second mask array.
24. Apparatus as defined in claim 1 further comprising at least a first and a second address register, each said register output forming the address to select the elements of the first mask array and the second address register forming the address to select the elements of the second mask array, and means to load and increment said registers such that the output of each register forms a nonlinear sequence.
25. Apparatus as defined in claim 24 comprising: a set of constants, other counters, in any order that are used to modify the contents of the address registers at different times such that the address register output forms a nonlinear sequence.
26. Apparatus as defined in claim 1 further comprising one or more additional mask arrays wherein each additional array contents is used by the means for encoding to modify the result of the operation with the preceding mask array.
27. Encryption as defined in claim 1 where each of the masking arrays both reside as elements of a single array.
28. A method for encrypting and decrypting messages c o m p r i s i n g t h e s t e p s o f : retrieving an array D of elements to be encoded, defining a mask array of elements M , creating a password array of P elements, wherein the P elements are arranged to provide encryption processing information,
6 7
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95936202A EP0795240A4 (en) | 1994-11-09 | 1995-09-29 | Message protection system and method |
| JP8516035A JPH10508955A (en) | 1994-11-09 | 1995-09-29 | Information security system and method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/336,766 US5717760A (en) | 1994-11-09 | 1994-11-09 | Message protection system and method |
| US08/336,766 | 1994-11-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996015604A1 WO1996015604A1 (en) | 1996-05-23 |
| WO1996015604B1 true WO1996015604B1 (en) | 1996-07-04 |
Family
ID=23317561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/012403 WO1996015604A1 (en) | 1994-11-09 | 1995-09-29 | Message protection system and method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5717760A (en) |
| EP (1) | EP0795240A4 (en) |
| JP (1) | JPH10508955A (en) |
| CA (1) | CA2204878A1 (en) |
| WO (1) | WO1996015604A1 (en) |
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|---|---|---|---|---|
| DE69635651T2 (en) * | 1995-09-05 | 2006-09-07 | Mitsubishi Denki K.K. | Device and method for data conversion |
| US6373884B1 (en) * | 1997-03-11 | 2002-04-16 | Motorola, Inc. | Method and apparatus for transmitting data |
| DE69717505T2 (en) * | 1997-03-21 | 2003-10-02 | Canal+ Technologies, Paris | METHOD FOR REMOVING DATA IN AN MPEG RECEIVER / DECODER |
| WO2000025203A1 (en) * | 1998-10-28 | 2000-05-04 | Datamark Technologies Pte Ltd. | Methods of digital steganography for multimedia data |
| US6549622B1 (en) * | 1998-11-23 | 2003-04-15 | Compaq Computer Corporation | System and method for a fast hardware implementation of RC4 |
| JP2003500898A (en) * | 1999-05-18 | 2003-01-07 | サターフィールド，リチャード，シー | Encoder / decoder using corresponding XOR using a plurality of radixes |
| CN1184562C (en) * | 1999-09-01 | 2005-01-12 | 英特尔公司 | Branch instruction for procesor architecture |
| WO2001016702A1 (en) | 1999-09-01 | 2001-03-08 | Intel Corporation | Register set used in multithreaded parallel processor architecture |
| US7191309B1 (en) * | 1999-09-01 | 2007-03-13 | Intel Corporation | Double shift instruction for micro engine used in multithreaded parallel processor architecture |
| US6760440B1 (en) * | 1999-12-11 | 2004-07-06 | Honeywell International Inc. | One's complement cryptographic combiner |
| US20020114451A1 (en) * | 2000-07-06 | 2002-08-22 | Richard Satterfield | Variable width block cipher |
| JP2002055604A (en) * | 2000-08-11 | 2002-02-20 | Trinity Communication Inc | Data protection processing device, modem device, data communication system, data protection processing method and computer-readable recording medium with program for making computer perform the method recorded thereon |
| US7681018B2 (en) * | 2000-08-31 | 2010-03-16 | Intel Corporation | Method and apparatus for providing large register address space while maximizing cycletime performance for a multi-threaded register file set |
| US7277543B1 (en) * | 2000-11-14 | 2007-10-02 | Honeywell International Inc. | Cryptographic combiner using two sequential non-associative operations |
| US7020871B2 (en) * | 2000-12-21 | 2006-03-28 | Intel Corporation | Breakpoint method for parallel hardware threads in multithreaded processor |
| US7225281B2 (en) * | 2001-08-27 | 2007-05-29 | Intel Corporation | Multiprocessor infrastructure for providing flexible bandwidth allocation via multiple instantiations of separate data buses, control buses and support mechanisms |
| US6868476B2 (en) | 2001-08-27 | 2005-03-15 | Intel Corporation | Software controlled content addressable memory in a general purpose execution datapath |
| US7216204B2 (en) | 2001-08-27 | 2007-05-08 | Intel Corporation | Mechanism for providing early coherency detection to enable high performance memory updates in a latency sensitive multithreaded environment |
| US7487505B2 (en) | 2001-08-27 | 2009-02-03 | Intel Corporation | Multithreaded microprocessor with register allocation based on number of active threads |
| JP2003216037A (en) * | 2001-11-16 | 2003-07-30 | Yazaki Corp | Cipher key, enciphering device, enciphering/deciphering device, cipher key management device, and deciphering device |
| US7610451B2 (en) * | 2002-01-25 | 2009-10-27 | Intel Corporation | Data transfer mechanism using unidirectional pull bus and push bus |
| US7337275B2 (en) * | 2002-08-13 | 2008-02-26 | Intel Corporation | Free list and ring data structure management |
| US6941438B2 (en) | 2003-01-10 | 2005-09-06 | Intel Corporation | Memory interleaving |
| US7465114B2 (en) * | 2004-08-11 | 2008-12-16 | Elc Management Llc | Vibrating mascara applicator, suitable compositions and method of use |
| US7602905B2 (en) * | 2004-09-01 | 2009-10-13 | Texas Instruments Incorporated | Processes, circuits, devices, and systems for encryption and decryption and other purposes, and processes of making |
| FR2882506B1 (en) * | 2005-02-25 | 2007-05-18 | Oreal | MAKE-UP PROCESS USING A VIBRANT APPLICATOR |
| US20080195859A1 (en) * | 2007-02-12 | 2008-08-14 | Joseph Frank Johns | Safe, Alert, Biz, Gold and Com2 software |
| JP5198572B2 (en) * | 2008-10-07 | 2013-05-15 | 富士通株式会社 | Encryption device |
| US8625802B2 (en) * | 2010-06-16 | 2014-01-07 | Porticor Ltd. | Methods, devices, and media for secure key management in a non-secured, distributed, virtualized environment with applications to cloud-computing security and management |
| US8738908B2 (en) * | 2011-05-10 | 2014-05-27 | Softlayer Technologies, Inc. | System and method for web-based security authentication |
| CN104298905B (en) * | 2014-10-13 | 2015-08-19 | 桑永朋 | A kind of password input method based on two-stage conversion and system |
| US9577669B2 (en) * | 2014-11-03 | 2017-02-21 | Ixia | Methods, systems, and computer readable media for optimized message decoding |
| CN107004084B (en) * | 2014-12-08 | 2021-08-10 | 密码研究公司 | Multiplicative mask for cryptographic operations |
| US9807204B2 (en) | 2015-03-06 | 2017-10-31 | Ixia | Optimized message processing |
| RU2656578C1 (en) * | 2016-11-22 | 2018-06-05 | Общество с ограниченной ответственностью "ЛАН-ПРОЕКТ" | Method for generating encryption keys |
| US11088744B1 (en) | 2020-02-07 | 2021-08-10 | Keysight Technologies, Inc. | Methods, systems, and computer readable media for 5G digital beamforming testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2756637C2 (en) * | 1977-12-16 | 1979-12-13 | Gretag Ag, Regensdorf, Zuerich (Schweiz) | Cryptogram converter |
| US4249180A (en) * | 1978-09-20 | 1981-02-03 | Northern Telecom Limited | Past dependent microcomputer cipher apparatus |
| US4853962A (en) * | 1987-12-07 | 1989-08-01 | Universal Computer Consulting, Inc. | Encryption system |
| GB8807020D0 (en) * | 1988-03-24 | 1988-08-24 | Racal Guardata Ltd | Data-processing apparatus |
| US5008935A (en) * | 1989-06-30 | 1991-04-16 | At&T Bell Laboratories | Efficient method for encrypting superblocks of data |
| US5077793A (en) * | 1989-09-29 | 1991-12-31 | The Boeing Company | Residue number encryption and decryption system |
| US5113444A (en) * | 1990-09-05 | 1992-05-12 | Arnold Vobach | Random choice cipher system and method |
| US5283832A (en) * | 1991-10-22 | 1994-02-01 | Motorola, Inc. | Paging message encryption |
| US5307412A (en) * | 1992-09-30 | 1994-04-26 | Vobach Arnold R | Random coding cipher system and method |
| SG42847A1 (en) * | 1993-05-05 | 1997-10-17 | Zunquan Liu | Device and method for data encryption |
-
1994
- 1994-11-09 US US08/336,766 patent/US5717760A/en not_active Expired - Lifetime
-
1995
- 1995-09-29 CA CA002204878A patent/CA2204878A1/en not_active Abandoned
- 1995-09-29 EP EP95936202A patent/EP0795240A4/en not_active Withdrawn
- 1995-09-29 WO PCT/US1995/012403 patent/WO1996015604A1/en not_active Application Discontinuation
- 1995-09-29 JP JP8516035A patent/JPH10508955A/en not_active Ceased
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