WO1998016883B1 - Electronic data processing circuit - Google Patents

Electronic data processing circuit

Info

Publication number
WO1998016883B1
WO1998016883B1 PCT/DE1997/002070 DE9702070W WO9816883B1 WO 1998016883 B1 WO1998016883 B1 WO 1998016883B1 DE 9702070 W DE9702070 W DE 9702070W WO 9816883 B1 WO9816883 B1 WO 9816883B1
Authority
WO
WIPO (PCT)
Prior art keywords
processing circuit
data processing
electronic data
circuit according
encryption
Prior art date
Application number
PCT/DE1997/002070
Other languages
German (de)
French (fr)
Other versions
WO1998016883A1 (en
Filing date
Publication date
Priority claimed from DE19642560A external-priority patent/DE19642560A1/en
Application filed filed Critical
Priority to UA99031798A priority Critical patent/UA52690C2/en
Priority to AT97944712T priority patent/ATE486320T1/en
Priority to EP97944712A priority patent/EP0932867B1/en
Priority to JP10517883A priority patent/JP2000504137A/en
Priority to BR9712529-6A priority patent/BR9712529A/en
Priority to DE59713047T priority patent/DE59713047D1/en
Publication of WO1998016883A1 publication Critical patent/WO1998016883A1/en
Publication of WO1998016883B1 publication Critical patent/WO1998016883B1/en
Priority to US09/292,268 priority patent/US6195752B1/en

Links

Abstract

The invention concerns an electronic data processing circuit having an operating module (1, 101), such as for example a microprocessor, with at least one data memory (2, 3, 4, 5, 102, 103, 104, 105) and with a data bus (106) extending between a data memory (2, 3, 4, 5, 102, 103, 104, 105) and the operating module (1, 101). With electronic data processing circuits of the type in question the memory frequently contains information to which access should be limited as far as possible. Therefore it is necessary to take security measures to guard against manipulation of the electronic data processing circuit. Consequently the object of the invention is to produce an electronic data processing circuit of the type in question which affords better protection against undesired alterations. According to the invention, this object is achieved by an electronic data processing circuit of the type in question in which at least one coding module (20, 21, 22, 35, 107) is provided in the region between the data memory (2, 3, 4, 5, 102, 103, 104, 105) and the data bus and/or in the region between the operating module (1, 101) and the data bus. The coding module (20, 21, 22, 35, 107) is designed such that data traffic between the operating module (1, 101) and the data bus or between the data memory (2, 3, 4, 5, 102, 103, 104, 105) and the data bus (106) can be coded and/or decoded.

Claims

23 23
GEÄNDERTE ANSPRÜCHECHANGED CLAIMS
[beim Internationalen Büro am 17. April 1998 (17.04.98) eingegangen; ursprüngliche Ansprüche 1-17 durch neue Ansprüche 1-16 ersetzt (4 Seiten)][received at the International Bureau on April 17, 1998 (April 17, 1998); original claims 1-17 replaced by new claims 1-16 (4 pages)]
1. Elektronische Datenverarbeitungsschaltung mit einer Betriebsbaugruppe wie einem Mikroprozessor, mit wenigstens einem Datenspeicher und mit einem sich zwischen Datenspeicher und Betriebsbaugruppe erstreckendem Datenbus, dadurch gekennzeichnet, daß im Bereich mindestens einer die Betriebsbaugruppe (1) und wenigstens einen Datenspeicher (2, 3, 4, 5) verbindenden Datenleitung (7, 8, 34, 11) des Datenbus wenigstens zwei Verschlüsselungsbaugruppen (18, 19, 20, 21, 35) vorgesehen sind, wobei die Verschlüsselungsbaugruppen (18, 19, 20, 21, 35) so ausgebildet sind, daß eine vollständige Verschlüsselung bzw. Entschlüsselung durch das Zusammen- wirken der Verschlüsselungsbaugruppen (18, 19, 20, 21, 35) ausführbar ist.1. An electronic data processing circuit comprising an operating assembly such as a microprocessor, having at least one data memory and a data bus extending between data memory and operating assembly, characterized in that at least one of the operating assembly (1) and at least one data memory (2, 3, 4, 5) connecting data line (7, 8, 34, 11) of the data bus at least two encryption modules (18, 19, 20, 21, 35) are provided, wherein the encryption modules (18, 19, 20, 21, 35) are formed so that a complete encryption or decryption by the interaction of the encryption modules (18, 19, 20, 21, 35) is executable.
2. Elektronische Datenverarbeitungsschaltung nach Anspruch2. Electronic data processing circuit according to claim
1, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppen (18, 19, 20, 21, 35) an verschiedenen Orten der elektronischen Datenverarbeitungsschaltung angeordnet sind.1, characterized in that the encryption modules (18, 19, 20, 21, 35) are arranged at different locations of the electronic data processing circuit.
3. Elektronische Datenverarbeitungsschaltung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) so ausgebildet ist, daß der Datenverkehr mittels eines Ver- schlüsselungs-Algorithmus verschlüsselbar ist.3. An electronic data processing circuit according to claim 1 or claim 2, characterized in that the encryption module (20, 21, 22, 35, 107) is formed so that the data traffic by means of an encryption algorithm is encrypted.
4. Elektronische Datenverarbeitungsschaltung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) so ausgebildet ist, daß der Datenverkehr mittels Hardware- Verschlüsselung verschlüsselbar ist.4. An electronic data processing circuit according to any one of claims 1 to 3, characterized in that the encryption module (20, 21, 22, 35, 107) is formed so that the data traffic by means of hardware encryption is encrypted.
GEÄNDERTESB TT ARTIKEL19 CHANGEDB TT ARTICLE19
. Elektronische Datenverarbeitungsschaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) so ausgebildet ist, daß die Wertigkeit einzelner Bits des Datenverkehrs selektiv änderbar ist., Electronic data processing circuit according to one of the preceding claims, characterized in that the encryption module (20, 21, 22, 35, 107) is designed such that the significance of individual bits of the data traffic is selectively changeable.
6. Elektronische Datenverarbeitungsschaltung nach Anspruch 5, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe wenigstens ein EXOR-Glied aufweist.6. An electronic data processing circuit according to claim 5, characterized in that the encryption module comprises at least one EXOR element.
7. Elektronische Datenverarbeitungsschaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) so ausgebildet ist, daß die Anschlußreihenfolge von Daten- leitungen des Datenbus selektiv änderbar ist.7. An electronic data processing circuit according to any one of the preceding claims, characterized in that the encryption module (20, 21, 22, 35, 107) is formed so that the connection order of data lines of the data bus is selectively changeable.
8. Elektronische Datenverarbeitungsschaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) so ausgebildet ist, daß der Datenverkehr wenigstens teilweise selektiv verzögerbar ist.8. An electronic data processing circuit according to any one of the preceding claims, characterized in that the encryption module (20, 21, 22, 35, 107) is formed so that the data traffic is at least partially selectively delayable.
9. Elektronische Datenverarbeitungsschaltung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) wenigstens einen Eingang zur Eingabe wenigstens eines Schlüssels aufweist.9. An electronic data processing circuit according to any one of the preceding claims, characterized in that the encryption module (20, 21, 22, 35, 107) has at least one input for inputting at least one key.
10 . Elektronische Datenverarbeitungsschaltung nach Anspruch 9 , 2510. An electronic data processing circuit according to claim 9, 25
dadurch gekennzeichnet, daß der bzw. die Schlüssel in einer Flash-Zelle der Datenver¬ arbeitungsschaltung abgelegt ist bzw. sind.characterized in that the or each key is stored in a flash cell of the movement of such data ¬ processing circuit or are.
11. Elektronische Datenverarbeitungsschaltung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß der Schlüssel in einer vergrabenen Struktur eines integrierten Bausteins zur Aufnahme der Datenverarbeitungs- schaltung abgelegt ist.11. An electronic data processing circuit according to claim 9 or 10, characterized in that the key is stored in a buried structure of an integrated module for receiving the data processing circuit.
12. Elektronische Datenverarbeitungsschaltung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß eine Sensorik zum Abtasten von Manipulationen des Orts, an dem der Schlüssel abgelegt ist, aufweist.12. An electronic data processing circuit according to claim 9 or 10, characterized in that a sensor for scanning manipulations of the location where the key is stored has.
13. Elektronische Datenverarbeitungsschaltung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß die Datenverarbeitungsschaltung so ausgebildet ist, daß bei Ausführung vorbestimmter Operationen durch die Betriebsbaugruppe ein Schlüssel in die Verschlüsselungsbaugruppe (20, 21, 22, 35, 107) eingebbar ist.13. An electronic data processing circuit according to any one of claims 9 to 12, characterized in that the data processing circuit is designed so that when executing predetermined operations by the operating assembly, a key in the encryption module (20, 21, 22, 35, 107) can be entered.
14. Elektronische Datenverarbeitungsschaltung nach einem der Ansprüche 9 bis 13, dadurch gekennzeichnet, daß ein Zufallsgenerator (28) vorgesehen ist, mit dem ein Schlüssel zufällig auswählbar ist.14. An electronic data processing circuit according to any one of claims 9 to 13, characterized in that a random number generator (28) is provided, with which a key is randomly selectable.
15. Elektronische Datenverarbeitungsschaltung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, daß eine Einrichtung (120) zum Ableiten eines Schlüssels aus einer in der Betriebsbaugruppe (101) verwendeten Adresse vorgesehen ist. 2615. An electronic data processing circuit according to any one of claims 9 to 14, characterized in that means (120) for deriving a key from an address used in the operating assembly (101) is provided. 26
16. Elektronische Datenverarbeitungsschaltung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, daß eine Zeitmessvorrichtung (26) vorgesehen ist, durch die ein Wechsel des Schlüssels einleitbar ist. 16. An electronic data processing circuit according to any one of claims 9 to 14, characterized in that a timing device (26) is provided, through which a change of the key can be introduced.
PCT/DE1997/002070 1996-10-15 1997-09-15 Electronic data processing circuit WO1998016883A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
UA99031798A UA52690C2 (en) 1996-10-15 1997-09-15 Electronic data processing circuit
AT97944712T ATE486320T1 (en) 1996-10-15 1997-09-15 ELECTRONIC DATA PROCESSING CIRCUIT
EP97944712A EP0932867B1 (en) 1996-10-15 1997-09-15 Electronic data processing circuit
JP10517883A JP2000504137A (en) 1996-10-15 1997-09-15 Electronic data processing circuit
BR9712529-6A BR9712529A (en) 1996-10-15 1997-09-15 Electronic data processing circuit
DE59713047T DE59713047D1 (en) 1996-10-15 1997-09-15 ELECTRONIC DATA PROCESSING CIRCUIT
US09/292,268 US6195752B1 (en) 1996-10-15 1999-04-15 Electronic data processing circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19642560.3 1996-10-15
DE19642560A DE19642560A1 (en) 1996-10-15 1996-10-15 Electronic data processing circuit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/292,268 Continuation US6195752B1 (en) 1996-10-15 1999-04-15 Electronic data processing circuit

Publications (2)

Publication Number Publication Date
WO1998016883A1 WO1998016883A1 (en) 1998-04-23
WO1998016883B1 true WO1998016883B1 (en) 1998-06-04

Family

ID=7808837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/002070 WO1998016883A1 (en) 1996-10-15 1997-09-15 Electronic data processing circuit

Country Status (10)

Country Link
US (1) US6195752B1 (en)
EP (1) EP0932867B1 (en)
JP (1) JP2000504137A (en)
KR (1) KR100421629B1 (en)
CN (1) CN1127692C (en)
AT (1) ATE486320T1 (en)
BR (1) BR9712529A (en)
DE (2) DE19642560A1 (en)
UA (1) UA52690C2 (en)
WO (1) WO1998016883A1 (en)

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