ATE196581T1 - Taktfrequenzmodulation für sichere mikroprozessoren - Google Patents

Taktfrequenzmodulation für sichere mikroprozessoren

Info

Publication number
ATE196581T1
ATE196581T1 AT94118067T AT94118067T ATE196581T1 AT E196581 T1 ATE196581 T1 AT E196581T1 AT 94118067 T AT94118067 T AT 94118067T AT 94118067 T AT94118067 T AT 94118067T AT E196581 T1 ATE196581 T1 AT E196581T1
Authority
AT
Austria
Prior art keywords
clock
signal
inverter
output
delay
Prior art date
Application number
AT94118067T
Other languages
English (en)
Inventor
Eric Sprunk
Original Assignee
Gen Instrument Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gen Instrument Corp filed Critical Gen Instrument Corp
Application granted granted Critical
Publication of ATE196581T1 publication Critical patent/ATE196581T1/de

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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W42/00—Arrangements for protection of devices
    • H10W42/40—Arrangements for protection of devices protecting against tampering, e.g. unauthorised inspection or reverse engineering
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/06—Clock generators producing several clock signals
    • 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
    • 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
    • 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
    • H04L9/0668—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 producing a non-linear pseudorandom sequence
    • 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
    • H04L2209/04—Masking or blinding
    • H04L2209/043—Masking or blinding of tables, e.g. lookup, substitution or mapping
    • 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
    • H04L2209/08—Randomization, e.g. dummy operations or using noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Selective Calling Equipment (AREA)
  • Multi Processors (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Pulse Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Executing Machine-Instructions (AREA)
  • Microcomputers (AREA)
  • Storage Device Security (AREA)
AT94118067T 1993-12-21 1994-11-16 Taktfrequenzmodulation für sichere mikroprozessoren ATE196581T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/167,782 US5404402A (en) 1993-12-21 1993-12-21 Clock frequency modulation for secure microprocessors

Publications (1)

Publication Number Publication Date
ATE196581T1 true ATE196581T1 (de) 2000-10-15

Family

ID=22608810

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94118067T ATE196581T1 (de) 1993-12-21 1994-11-16 Taktfrequenzmodulation für sichere mikroprozessoren

Country Status (8)

Country Link
US (1) US5404402A (de)
EP (1) EP0660562B1 (de)
JP (1) JPH07239837A (de)
KR (1) KR100210524B1 (de)
AT (1) ATE196581T1 (de)
DE (1) DE69425952T2 (de)
NO (1) NO944432L (de)
TW (1) TW228042B (de)

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Also Published As

Publication number Publication date
KR950023026A (ko) 1995-07-28
EP0660562A3 (de) 1997-06-18
KR100210524B1 (ko) 1999-07-15
DE69425952D1 (de) 2000-10-26
EP0660562B1 (de) 2000-09-20
NO944432D0 (no) 1994-11-18
NO944432L (no) 1995-06-22
DE69425952T2 (de) 2001-05-10
EP0660562A2 (de) 1995-06-28
US5404402A (en) 1995-04-04
TW228042B (en) 1994-08-11
JPH07239837A (ja) 1995-09-12

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