DE69937007D1 - Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten - Google Patents
Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von datenInfo
- Publication number
- DE69937007D1 DE69937007D1 DE69937007T DE69937007T DE69937007D1 DE 69937007 D1 DE69937007 D1 DE 69937007D1 DE 69937007 T DE69937007 T DE 69937007T DE 69937007 T DE69937007 T DE 69937007T DE 69937007 D1 DE69937007 D1 DE 69937007D1
- Authority
- DE
- Germany
- Prior art keywords
- encryption
- decomposition
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0637—Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
- H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SG1999/000020 WO2000057595A1 (en) | 1999-03-22 | 1999-03-22 | Method and apparatus for encrypting and decrypting data |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69937007D1 true DE69937007D1 (de) | 2007-10-11 |
DE69937007T2 DE69937007T2 (de) | 2008-05-21 |
Family
ID=20430193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69937007T Expired - Fee Related DE69937007T2 (de) | 1999-03-22 | 1999-03-22 | Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten |
Country Status (4)
Country | Link |
---|---|
US (1) | US7110539B1 (de) |
EP (1) | EP1161811B1 (de) |
DE (1) | DE69937007T2 (de) |
WO (1) | WO2000057595A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6909786B2 (en) * | 2001-01-09 | 2005-06-21 | D'crypt Private Limited | Cryptographic trap door with timed lock and controlled escrow |
US20110066857A1 (en) * | 2001-06-22 | 2011-03-17 | Probst David K | Method for secure delivery of digital content |
JPWO2003013054A1 (ja) * | 2001-07-17 | 2004-11-25 | シャープ株式会社 | 処理に伴い暗号データの改ざん検出用データを生成する装置及び方法 |
US8117450B2 (en) * | 2001-10-11 | 2012-02-14 | Hewlett-Packard Development Company, L.P. | System and method for secure data transmission |
KR20050091732A (ko) * | 2002-12-18 | 2005-09-15 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 시각적 암호 시스템의 키 동기화 |
DE10332094A1 (de) | 2003-07-15 | 2005-03-10 | Fujitsu Siemens Computers Gmbh | Verschlüsselungssystem und Verfahren zur Ver-/Entschlüsselung sensibler Daten |
US7496347B2 (en) * | 2004-11-12 | 2009-02-24 | Velocita Wireless Llc | Method and apparatus for providing secure wireless communication |
US8155306B2 (en) * | 2004-12-09 | 2012-04-10 | Intel Corporation | Method and apparatus for increasing the speed of cryptographic processing |
US20080276309A1 (en) * | 2006-07-06 | 2008-11-06 | Edelman Lance F | System and Method for Securing Software Applications |
US8130956B2 (en) * | 2007-08-02 | 2012-03-06 | International Business Machines Corporation | Efficient and low power encrypting and decrypting of data |
US8209334B1 (en) * | 2007-12-28 | 2012-06-26 | Don Doerner | Method to direct data to a specific one of several repositories |
JP2010021888A (ja) * | 2008-07-11 | 2010-01-28 | Toshiba Corp | 通信装置、鍵サーバ及び管理サーバ |
US20100250968A1 (en) * | 2009-03-25 | 2010-09-30 | Lsi Corporation | Device for data security using user selectable one-time pad |
FR2949010A1 (fr) * | 2009-08-05 | 2011-02-11 | St Microelectronics Rousset | Procede de contremesure pour proteger des donnees memorisees |
US9208333B2 (en) | 2010-03-31 | 2015-12-08 | British Telecommunications Public Limited Company | Secure data recorder |
US9779101B2 (en) | 2014-07-14 | 2017-10-03 | Secured2 Corporation | Data conversion device |
US9779100B2 (en) | 2014-07-14 | 2017-10-03 | Secured2 Corporation | Data conversion method |
EP3170093A4 (de) * | 2014-07-14 | 2018-03-21 | Secured2 Corporation | Datenumwandlungsvorrichtung |
US9779148B2 (en) | 2014-07-14 | 2017-10-03 | Secured2 Corporation | Data conversion system |
CN104135371B (zh) * | 2014-08-18 | 2017-07-14 | 新华三技术有限公司 | 一种密码保存方法及装置 |
US9923719B2 (en) | 2014-12-09 | 2018-03-20 | Cryptography Research, Inc. | Location aware cryptography |
US10333699B1 (en) | 2015-09-30 | 2019-06-25 | Cryptography Research, Inc. | Generating a pseudorandom number based on a portion of shares used in a cryptographic operation |
US10841086B2 (en) | 2018-02-06 | 2020-11-17 | Wickr, Inc. | Facilitating communications using hybrid cryptography |
US10819510B2 (en) * | 2018-02-06 | 2020-10-27 | Wickr Inc. | Facilitating communications using hybrid cryptography |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747139A (en) * | 1984-08-27 | 1988-05-24 | Taaffe James L | Software security method and systems |
US4731843A (en) * | 1985-12-30 | 1988-03-15 | Paradyne Corporation | Method and device of increasing the execution speed of cipher feedback mode of the DES by an arbitrary multiplier |
US5412730A (en) * | 1989-10-06 | 1995-05-02 | Telequip Corporation | Encrypted data transmission system employing means for randomly altering the encryption keys |
JP3421950B2 (ja) * | 1993-12-01 | 2003-06-30 | インヴィジメール テクノロジーズ リミテッド | 非決定論的ミクスチャー発生器ストリーム暗号化システム |
GB2288519A (en) * | 1994-04-05 | 1995-10-18 | Ibm | Data encryption |
ES2171568T3 (es) | 1994-09-09 | 2002-09-16 | Titan Corp | Sistema de acceso condicional. |
JP3647907B2 (ja) * | 1994-09-09 | 2005-05-18 | 富士通株式会社 | 暗号化ソフトウェアの解凍システム |
CN100452072C (zh) * | 1995-02-13 | 2009-01-14 | 英特特拉斯特技术公司 | 用于管理在第一装置和第二装置之间的数字文档的分布的方法 |
US5664016A (en) | 1995-06-27 | 1997-09-02 | Northern Telecom Limited | Method of building fast MACS from hash functions |
US5677956A (en) * | 1995-09-29 | 1997-10-14 | Innovative Computing Group Inc | Method and apparatus for data encryption/decryption using cellular automata transform |
US6505170B1 (en) * | 1996-10-04 | 2003-01-07 | Western Union North America | Distributed device management system |
JPH10178421A (ja) * | 1996-10-18 | 1998-06-30 | Toshiba Corp | パケット処理装置、移動計算機装置、パケット転送方法及びパケット処理方法 |
US5956402A (en) * | 1997-03-07 | 1999-09-21 | At&T Corp. | Passwordless secure and efficient remote data update |
CA2302784A1 (en) * | 1997-09-17 | 1999-03-25 | Frank C. Luyster | Improved block cipher method |
US6628786B1 (en) * | 1997-09-30 | 2003-09-30 | Sun Microsystems, Inc. | Distributed state random number generator and method for utilizing same |
-
1999
- 1999-03-22 US US09/937,634 patent/US7110539B1/en not_active Expired - Fee Related
- 1999-03-22 EP EP99912206A patent/EP1161811B1/de not_active Expired - Lifetime
- 1999-03-22 WO PCT/SG1999/000020 patent/WO2000057595A1/en active IP Right Grant
- 1999-03-22 DE DE69937007T patent/DE69937007T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1161811B1 (de) | 2007-08-29 |
EP1161811A1 (de) | 2001-12-12 |
DE69937007T2 (de) | 2008-05-21 |
US7110539B1 (en) | 2006-09-19 |
WO2000057595A1 (en) | 2000-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |