AT360866T - A leak resistant update an indexed cryptographic wrench - Google Patents

A leak resistant update an indexed cryptographic wrench


Publication number
AT360866T AT99940799T AT99940799T AT360866T AT 360866 T AT360866 T AT 360866T AT 99940799 T AT99940799 T AT 99940799T AT 99940799 T AT99940799 T AT 99940799T AT 360866 T AT360866 T AT 360866T
Prior art keywords
leak resistant
Prior art date
Application number
Other languages
German (de)
Paul C Kocher
Original Assignee
Cryptography Res 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
Family has litigation
Priority to US9164498P priority Critical
Application filed by Cryptography Res Inc filed Critical Cryptography Res Inc
First worldwide family litigation filed litigation Critical "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of AT360866T publication Critical patent/AT360866T/en



    • G07F7/00Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/30Payment architectures, schemes or protocols characterised by the use of specific devices
    • G06Q20/34Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/341Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/40Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/409Card specific authentication in transaction processing
    • G06Q20/4097Mutual authentication between card and transaction partners
    • G06Q20/40975Use of encryption for mutual authentication
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/002Countermeasures against attacks on cryptographic mechanisms
    • H04L9/003Countermeasures against attacks on cryptographic mechanisms for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/06Cryptographic mechanisms or cryptographic arrangements for secret or secure communication 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
    • H04L9/0618Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0625Block 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
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891Revocation or update of secret information, e.g. encryption key update or rekeying
    • G06F2207/00Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219Countermeasures against side channel or fault attacks
AT99940799T 1998-07-02 1999-07-02 A leak resistant update an indexed cryptographic wrench AT360866T (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US9164498P true 1998-07-02 1998-07-02

Publications (1)

Publication Number Publication Date
AT360866T true AT360866T (en) 2007-05-15



Family Applications (1)

Application Number Title Priority Date Filing Date
AT99940799T AT360866T (en) 1998-07-02 1999-07-02 A leak resistant update an indexed cryptographic wrench

Country Status (8)

Country Link
US (5) US6539092B1 (en)
EP (1) EP1092297B1 (en)
JP (1) JP4216475B2 (en)
AT (1) AT360866T (en)
AU (1) AU5458199A (en)
CA (1) CA2334597C (en)
DE (1) DE69935913T2 (en)
WO (1) WO2000002342A2 (en)

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