ES2196137T3 - Dispositivo de codificacion. - Google Patents
Dispositivo de codificacion.Info
- Publication number
- ES2196137T3 ES2196137T3 ES96900841T ES96900841T ES2196137T3 ES 2196137 T3 ES2196137 T3 ES 2196137T3 ES 96900841 T ES96900841 T ES 96900841T ES 96900841 T ES96900841 T ES 96900841T ES 2196137 T3 ES2196137 T3 ES 2196137T3
- Authority
- ES
- Spain
- Prior art keywords
- encrypting
- encrypted
- output data
- data
- time lapse
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
- G06K19/07363—Means for preventing undesired reading or writing from or onto record carriers by preventing analysis of the circuit, e.g. dynamic or static power analysis or current analysis
-
- 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
-
- 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
- H04L9/002—Countermeasures against attacks on cryptographic mechanisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F2207/72—Indexing scheme relating to groups G06F7/72 - G06F7/729
- G06F2207/7219—Countermeasures against side channel or fault attacks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/12—Details relating to cryptographic hardware or logic circuitry
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Storage Device Security (AREA)
- Slot Machines And Peripheral Devices (AREA)
- Seal Device For Vehicle (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
- Selective Calling Equipment (AREA)
Abstract
LA INVENCION SE REFIERE A UN DISPOSITIVO DE CIFRADO QUE ESTA FORMADO POR UNA UNIDAD DE CIFRADO (VE) Y UN REGISTRO DE SALIDA (AR) CONECTADO A CONTINUACION. DURANTE UN LAPSO DE TIEMPO ({TA}2) SE FORMAN DATOS DE SALIDA CIFRADOS (A) A PARTIR DE LOS DATOS DE ENTRADA (E) SUMINISTRADOS A LA UNIDAD DE CIFRADO (VE) SIENDO A CONTINUACION INSCRITOS LOS DATOS DE SALIDA CIFRADOS (A), EN EL REGISTRO DE SALIDA (AR). UNA VEZ TRANSCURRIDO EL LAPSO DE TIEMPO ({TA}2), NO SE ENVIAN MAS DATOS AL REGISTRO DE SALIDA (AR), PERO EL CONSUMO DE CORRIENTE DE ESTE REGISTRO DE SALIDA (AR) NO VARIA. ADEMAS, LA UNIDAD DE CIFRADO (VE) SIGUE GENERANDO DATOS DE SALIDA (A) HASTA QUE TRANSCURRE UN LAPSO DE TIEMPO ({TA}1). MEDIANTE ESTE DISPOSITIVO DE CIFRADO PROPUESTO EN LA INVENCION, NINGUN OBSERVADOR EXTERNO PUEDE A PARTIR DEL CONSUMO DE CORRIENTE DEL EQUIPO DE CIFRADO SACAR CONCLUSIONES ACERCA DE LA DURACION REAL DE LA GENERACION DE LOS DATOS DE SALIDA CIFRADOS QUE SE ENCUENTRAN EN EL REGISTRO DE SALIDA (AR).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19505097A DE19505097C1 (de) | 1995-02-15 | 1995-02-15 | Verschlüsselungsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2196137T3 true ES2196137T3 (es) | 2003-12-16 |
Family
ID=7754052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES96900841T Expired - Lifetime ES2196137T3 (es) | 1995-02-15 | 1996-01-23 | Dispositivo de codificacion. |
Country Status (12)
Country | Link |
---|---|
US (1) | US5995629A (es) |
EP (1) | EP0809905B1 (es) |
JP (1) | JP3502391B2 (es) |
KR (1) | KR100318627B1 (es) |
CN (1) | CN1080497C (es) |
AT (1) | ATE236478T1 (es) |
DE (2) | DE19505097C1 (es) |
ES (1) | ES2196137T3 (es) |
IN (1) | IN186606B (es) |
RU (1) | RU2154912C2 (es) |
UA (1) | UA53617C2 (es) |
WO (1) | WO1996025813A1 (es) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19622533A1 (de) * | 1996-06-05 | 1997-12-11 | Deutsche Telekom Ag | Verfahren und Vorrichtung zum Laden von Inputdaten in einen Algorithmus bei der Authentikation |
US7587044B2 (en) | 1998-01-02 | 2009-09-08 | Cryptography Research, Inc. | Differential power analysis method and apparatus |
FR2776410B1 (fr) * | 1998-03-20 | 2002-11-15 | Gemplus Card Int | Dispositifs pour masquer les operations effectuees dans une carte a microprocesseur |
US20030118190A1 (en) * | 1998-05-29 | 2003-06-26 | Siemens Aktiengesellschaft | Method and apparatus for processing data where a part of the current supplied is supplied to an auxiliary circuit |
IL139935A (en) | 1998-06-03 | 2005-06-19 | Cryptography Res Inc | Des and other cryptographic processes with leak minimization for smartcards and other cryptosystems |
EP1926241A3 (en) | 1998-06-03 | 2009-03-11 | Cryptography Research Inc. | Using unpredictable information to minimize leakage from smartcards and other cryptosystems |
DE69938045T2 (de) * | 1998-06-03 | 2009-01-15 | Cryptography Research Inc., San Francisco | Verwendung von unvorhersagbarer Information zur Leckminimierung von Chipkarten und anderen Kryptosystemen |
DE69935913T2 (de) | 1998-07-02 | 2008-01-10 | Cryptography Research Inc., San Francisco | Leckresistente aktualisierung eines indexierten kryptographischen schlüssels |
JP4317607B2 (ja) * | 1998-12-14 | 2009-08-19 | 株式会社日立製作所 | 情報処理装置、耐タンパ処理装置 |
US6594760B1 (en) | 1998-12-21 | 2003-07-15 | Pitney Bowes Inc. | System and method for suppressing conducted emissions by a cryptographic device |
IL128007A (en) * | 1999-01-11 | 2003-02-12 | Milsys Ltd | Enhancements on compact logic devices and also for accelerating and securing computations in modular arithmetic especially for use in public key cryptographic co-processors designed for elliptic curve and rsa type computations |
US6298135B1 (en) * | 1999-04-29 | 2001-10-02 | Motorola, Inc. | Method of preventing power analysis attacks on microelectronic assemblies |
DE19921633A1 (de) * | 1999-05-10 | 2000-11-16 | Deutsche Telekom Ag | Verfahren zur Implementierung kryptographischer Algorithmen |
FR2793904B1 (fr) * | 1999-05-21 | 2001-07-27 | St Microelectronics Sa | Procede et dispositif de gestion d'un circuit electronique |
US6419159B1 (en) * | 1999-06-14 | 2002-07-16 | Microsoft Corporation | Integrated circuit device with power analysis protection circuitry |
DE59914370D1 (de) * | 1999-11-03 | 2007-07-19 | Infineon Technologies Ag | Kodiervorrichtung |
US6766455B1 (en) | 1999-12-09 | 2004-07-20 | Pitney Bowes Inc. | System and method for preventing differential power analysis attacks (DPA) on a cryptographic device |
CA2327943C (en) * | 1999-12-09 | 2005-09-20 | Pitney Bowes Inc. | System and method for suppressing conducted emissions by a cryptographic device comprising an integrated circuit |
EP1272973B1 (en) * | 2000-04-04 | 2012-05-09 | Nxp B.V. | Output stage for a communication contact for a data carrier |
US20020049910A1 (en) * | 2000-07-25 | 2002-04-25 | Salomon Allen Michael | Unified trust model providing secure identification, authentication and validation of physical products and entities, and processing, storage and exchange of information |
US7376235B2 (en) * | 2002-04-30 | 2008-05-20 | Microsoft Corporation | Methods and systems for frustrating statistical attacks by injecting pseudo data into a data system |
FR2840083A1 (fr) * | 2002-05-24 | 2003-11-28 | St Microelectronics Sa | Test d'un algorithme execute par un circuit integre |
FR2857804B1 (fr) * | 2003-07-17 | 2006-05-26 | Atmel Corp | Procede et appareil pour lisser la consommation de courant d ans un circuit integre |
EP1651969A4 (en) * | 2003-07-17 | 2007-03-07 | Atmel Corp | METHOD AND DEVICE FOR SMOOTHING ELECTRICAL CONSUMPTION IN AN INTEGRATED CIRCUIT |
US8334705B1 (en) | 2011-10-27 | 2012-12-18 | Certicom Corp. | Analog circuitry to conceal activity of logic circuitry |
US8635467B2 (en) | 2011-10-27 | 2014-01-21 | Certicom Corp. | Integrated circuit with logic circuitry and multiple concealing circuits |
US9755822B2 (en) | 2013-06-19 | 2017-09-05 | Cryptography Research, Inc. | Countermeasure to power analysis attacks through time-varying impedance of power delivery networks |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR18869E (fr) * | 1913-07-18 | 1914-07-27 | Justin Ferdinand Lheyraud | Coupe-circuit mécanique à déclanchement automatique |
US3522374A (en) * | 1966-06-17 | 1970-07-28 | Int Standard Electric Corp | Ciphering unit |
US3515805A (en) * | 1967-02-06 | 1970-06-02 | Bell Telephone Labor Inc | Data scrambler |
US3700806A (en) * | 1967-09-18 | 1972-10-24 | Csf | Key generators for cryptographic devices |
US3639690A (en) * | 1969-09-10 | 1972-02-01 | Motorola Inc | Digital privacy system |
US3657699A (en) * | 1970-06-30 | 1972-04-18 | Ibm | Multipath encoder-decoder arrangement |
US4115657A (en) * | 1976-11-11 | 1978-09-19 | Datotek, Inc. | Random digital code generator |
DE3006717C2 (de) * | 1980-02-22 | 1981-11-26 | SIEMENS AG AAAAA, 1000 Berlin und 8000 München | Umschaltbare freilaufende Verwürfler- und Entwürfleranordnung (Scrambler und Descrambler) |
US4760598A (en) * | 1981-07-23 | 1988-07-26 | Racal Data Communications Inc. | Coded data transmission system |
JPH01114995A (ja) * | 1987-10-29 | 1989-05-08 | Toppan Printing Co Ltd | Icカード |
FR2638869B1 (fr) * | 1988-11-10 | 1990-12-21 | Sgs Thomson Microelectronics | Dispositif de securite contre la detection non autorisee de donnees protegees |
US5351292A (en) * | 1989-01-26 | 1994-09-27 | Cominvest Research Ab | Method and apparatus for preventing external detection of signal information |
DE3905667A1 (de) * | 1989-02-24 | 1990-08-30 | Ant Nachrichtentech | Verfahren zum ver- und entschluesseln eines nachrichtenstromes |
US5001756A (en) * | 1989-08-11 | 1991-03-19 | Motorola, Inc. | Decryption device with variable clock |
US5179570A (en) * | 1991-07-19 | 1993-01-12 | Imran Mir A | Direct sequence spread spectrum communication system with self-synchronizing correlator and method |
FR2698195B1 (fr) * | 1992-11-19 | 1994-12-16 | Gemplus Card Int | Procédé et circuit de cryptage et d'authentification pour carte à mémoire synchrone. |
-
1995
- 1995-02-15 DE DE19505097A patent/DE19505097C1/de not_active Expired - Fee Related
-
1996
- 1996-01-23 EP EP96900841A patent/EP0809905B1/de not_active Expired - Lifetime
- 1996-01-23 ES ES96900841T patent/ES2196137T3/es not_active Expired - Lifetime
- 1996-01-23 AT AT96900841T patent/ATE236478T1/de not_active IP Right Cessation
- 1996-01-23 RU RU97115454/09A patent/RU2154912C2/ru active
- 1996-01-23 UA UA97073759A patent/UA53617C2/uk unknown
- 1996-01-23 JP JP52456096A patent/JP3502391B2/ja not_active Expired - Lifetime
- 1996-01-23 KR KR1019970705539A patent/KR100318627B1/ko not_active IP Right Cessation
- 1996-01-23 DE DE59610302T patent/DE59610302D1/de not_active Expired - Lifetime
- 1996-01-23 CN CN96191953A patent/CN1080497C/zh not_active Expired - Lifetime
- 1996-01-23 WO PCT/DE1996/000094 patent/WO1996025813A1/de active IP Right Grant
- 1996-01-30 IN IN149CA1996 patent/IN186606B/en unknown
-
1997
- 1997-08-15 US US08/911,676 patent/US5995629A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1080497C (zh) | 2002-03-06 |
KR19980702144A (ko) | 1998-07-15 |
CN1174641A (zh) | 1998-02-25 |
US5995629A (en) | 1999-11-30 |
ATE236478T1 (de) | 2003-04-15 |
EP0809905A1 (de) | 1997-12-03 |
DE19505097C1 (de) | 1996-06-05 |
DE59610302D1 (de) | 2003-05-08 |
RU2154912C2 (ru) | 2000-08-20 |
JPH10504156A (ja) | 1998-04-14 |
JP3502391B2 (ja) | 2004-03-02 |
KR100318627B1 (ko) | 2002-04-22 |
UA53617C2 (uk) | 2003-02-17 |
IN186606B (es) | 2001-10-13 |
WO1996025813A1 (de) | 1996-08-22 |
EP0809905B1 (de) | 2003-04-02 |
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