WO2005040975A3 - Identity-based-encryption system with district policy information - Google Patents

Identity-based-encryption system with district policy information Download PDF

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Publication number
WO2005040975A3
WO2005040975A3 PCT/US2004/031129 US2004031129W WO2005040975A3 WO 2005040975 A3 WO2005040975 A3 WO 2005040975A3 US 2004031129 W US2004031129 W US 2004031129W WO 2005040975 A3 WO2005040975 A3 WO 2005040975A3
Authority
WO
WIPO (PCT)
Prior art keywords
district
ibe
information
ibe private
private key
Prior art date
Application number
PCT/US2004/031129
Other languages
French (fr)
Other versions
WO2005040975A2 (en
Inventor
Terence Spies
Matthew J Pauker
Lucas C Ryan
Guido Appenzeller
Original Assignee
Voltage Security Inc
Terence Spies
Matthew J Pauker
Lucas C Ryan
Guido Appenzeller
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 Voltage Security Inc, Terence Spies, Matthew J Pauker, Lucas C Ryan, Guido Appenzeller filed Critical Voltage Security Inc
Priority to EP04788925.8A priority Critical patent/EP1673890B1/en
Publication of WO2005040975A2 publication Critical patent/WO2005040975A2/en
Publication of WO2005040975A3 publication Critical patent/WO2005040975A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/20—Traffic policing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/088—Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A system is provided that uses identity-based encryption (IBE) to allow a sender to securely convey information in a message to a recipient over a communications network. IBE public key information may be used to encrypt messages and corresponding IBE private key information may be used to decrypt messages. The IBE private keys may be provided to message recipients by an IBE private key generator. The IBE private key generator and the recipients who obtain their IBE private keys from that generator form a district. District policy information may be provided by the IBE private key generator that specifies which encryption and communications protocols are used by the district. The district policy information may also specify which authentication protocols are used by the district and may set forth how content-based protocols are implemented. This information may be used by senders in sending messages to recipients.
PCT/US2004/031129 2003-10-17 2004-09-22 Identity-based-encryption system with district policy information WO2005040975A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04788925.8A EP1673890B1 (en) 2003-10-17 2004-09-22 Identity-based-encryption system with district policy information

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/688,019 2003-10-17
US10/688,019 US7103911B2 (en) 2003-10-17 2003-10-17 Identity-based-encryption system with district policy information

Publications (2)

Publication Number Publication Date
WO2005040975A2 WO2005040975A2 (en) 2005-05-06
WO2005040975A3 true WO2005040975A3 (en) 2006-01-12

Family

ID=34521082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/031129 WO2005040975A2 (en) 2003-10-17 2004-09-22 Identity-based-encryption system with district policy information

Country Status (3)

Country Link
US (1) US7103911B2 (en)
EP (1) EP1673890B1 (en)
WO (1) WO2005040975A2 (en)

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Also Published As

Publication number Publication date
WO2005040975A2 (en) 2005-05-06
EP1673890B1 (en) 2013-08-21
US20050084100A1 (en) 2005-04-21
EP1673890A4 (en) 2010-12-29
US7103911B2 (en) 2006-09-05
EP1673890A2 (en) 2006-06-28

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