DE60325575D1 - Hierarchische verchlüsselung auf identitätsbasis und signaturschemata - Google Patents

Hierarchische verchlüsselung auf identitätsbasis und signaturschemata

Info

Publication number
DE60325575D1
DE60325575D1 DE60325575T DE60325575T DE60325575D1 DE 60325575 D1 DE60325575 D1 DE 60325575D1 DE 60325575 T DE60325575 T DE 60325575T DE 60325575 T DE60325575 T DE 60325575T DE 60325575 D1 DE60325575 D1 DE 60325575D1
Authority
DE
Germany
Prior art keywords
entity
hierarchic
breakdown
group
signature schemes
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
DE60325575T
Other languages
German (de)
English (en)
Inventor
Craig B Gentry
Alice Silverberg
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.)
NTT Docomo Inc
Original Assignee
NTT Docomo 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 NTT Docomo Inc filed Critical NTT Docomo Inc
Application granted granted Critical
Publication of DE60325575D1 publication Critical patent/DE60325575D1/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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H04L9/0833—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
    • H04L9/0836—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key using tree structure or hierarchical structure
    • 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
    • H04L9/006—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving public key infrastructure [PKI] trust models
    • H04L9/007—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving public key infrastructure [PKI] trust models involving hierarchical structures
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H04L9/0847—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving identity based encryption [IBE] schemes
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
    • H04L9/3073—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3252—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes
DE60325575T 2002-03-21 2003-03-18 Hierarchische verchlüsselung auf identitätsbasis und signaturschemata Expired - Lifetime DE60325575D1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US36629202P 2002-03-21 2002-03-21
US36619602P 2002-03-21 2002-03-21
US10/384,328 US7349538B2 (en) 2002-03-21 2003-03-07 Hierarchical identity-based encryption and signature schemes
PCT/US2003/008010 WO2003081780A2 (en) 2002-03-21 2003-03-18 Hierarchical identity-based encryption and signature schemes

Publications (1)

Publication Number Publication Date
DE60325575D1 true DE60325575D1 (de) 2009-02-12

Family

ID=28046523

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60325575T Expired - Lifetime DE60325575D1 (de) 2002-03-21 2003-03-18 Hierarchische verchlüsselung auf identitätsbasis und signaturschemata

Country Status (8)

Country Link
US (4) US7349538B2 (US07443980-20081028-P00068.png)
EP (3) EP2309671A3 (US07443980-20081028-P00068.png)
JP (1) JP4405810B2 (US07443980-20081028-P00068.png)
CN (1) CN1633774B (US07443980-20081028-P00068.png)
AT (1) ATE419690T1 (US07443980-20081028-P00068.png)
AU (1) AU2003214189A1 (US07443980-20081028-P00068.png)
DE (1) DE60325575D1 (US07443980-20081028-P00068.png)
WO (1) WO2003081780A2 (US07443980-20081028-P00068.png)

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EP2309671A2 (en) 2011-04-13
EP1495573B1 (en) 2008-12-31
ATE419690T1 (de) 2009-01-15
US7590854B2 (en) 2009-09-15
EP1495573A4 (en) 2006-10-11
EP2012459A1 (en) 2009-01-07
EP1495573A2 (en) 2005-01-12
AU2003214189A1 (en) 2003-10-08
US7443980B2 (en) 2008-10-28
AU2003214189A8 (en) 2003-10-08
US20080052521A1 (en) 2008-02-28
US20080013722A1 (en) 2008-01-17
CN1633774B (zh) 2011-12-07
CN1633774A (zh) 2005-06-29
EP2309671A3 (en) 2013-08-28
JP2005521323A (ja) 2005-07-14
US20030179885A1 (en) 2003-09-25
WO2003081780A2 (en) 2003-10-02
US20070050629A1 (en) 2007-03-01
US7349538B2 (en) 2008-03-25
JP4405810B2 (ja) 2010-01-27
WO2003081780A3 (en) 2004-02-19
US7337322B2 (en) 2008-02-26

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