DE69031736T2 - Verschlüsselungsmethode - Google Patents

Verschlüsselungsmethode

Info

Publication number
DE69031736T2
DE69031736T2 DE69031736T DE69031736T DE69031736T2 DE 69031736 T2 DE69031736 T2 DE 69031736T2 DE 69031736 T DE69031736 T DE 69031736T DE 69031736 T DE69031736 T DE 69031736T DE 69031736 T2 DE69031736 T2 DE 69031736T2
Authority
DE
Germany
Prior art keywords
key
function
functions
key table
keys
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
Application number
DE69031736T
Other languages
English (en)
Other versions
DE69031736D1 (de
Inventor
Michael Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cryptech Inc
Original Assignee
Cryptech Inc
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 Cryptech Inc filed Critical Cryptech Inc
Application granted granted Critical
Publication of DE69031736D1 publication Critical patent/DE69031736D1/de
Publication of DE69031736T2 publication Critical patent/DE69031736T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04L9/002—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
    • H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
    • 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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
DE69031736T 1989-08-17 1990-03-14 Verschlüsselungsmethode Expired - Lifetime DE69031736T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/395,448 US5003596A (en) 1989-08-17 1989-08-17 Method of cryptographically transforming electronic digital data from one form to another
PCT/US1990/001391 WO1991003113A1 (en) 1989-08-17 1990-03-14 Encryption system

Publications (2)

Publication Number Publication Date
DE69031736D1 DE69031736D1 (de) 1998-01-02
DE69031736T2 true DE69031736T2 (de) 1998-06-04

Family

ID=23563086

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69031736T Expired - Lifetime DE69031736T2 (de) 1989-08-17 1990-03-14 Verschlüsselungsmethode

Country Status (8)

Country Link
US (1) US5003596A (de)
EP (1) EP0489742B1 (de)
JP (1) JP3188940B2 (de)
AT (1) ATE160476T1 (de)
AU (1) AU635466B2 (de)
CA (1) CA2064769C (de)
DE (1) DE69031736T2 (de)
WO (1) WO1991003113A1 (de)

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Also Published As

Publication number Publication date
EP0489742B1 (de) 1997-11-19
CA2064769A1 (en) 1991-02-18
ATE160476T1 (de) 1997-12-15
JP3188940B2 (ja) 2001-07-16
AU635466B2 (en) 1993-03-18
CA2064769C (en) 2000-02-08
AU6043190A (en) 1991-04-03
WO1991003113A1 (en) 1991-03-07
US5003596A (en) 1991-03-26
JPH05501925A (ja) 1993-04-08
DE69031736D1 (de) 1998-01-02
EP0489742A1 (de) 1992-06-17
EP0489742A4 (en) 1993-03-17

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