WO2004073230A3 - Identity-based encryption system for secure data distribution - Google Patents

Identity-based encryption system for secure data distribution Download PDF

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Publication number
WO2004073230A3
WO2004073230A3 PCT/US2004/003144 US2004003144W WO2004073230A3 WO 2004073230 A3 WO2004073230 A3 WO 2004073230A3 US 2004003144 W US2004003144 W US 2004003144W WO 2004073230 A3 WO2004073230 A3 WO 2004073230A3
Authority
WO
WIPO (PCT)
Prior art keywords
information
policy
identity
data
public key
Prior art date
Application number
PCT/US2004/003144
Other languages
French (fr)
Other versions
WO2004073230A2 (en
Inventor
Rishi R Kacker
Guido Appenzeller
Matthew J Pauker
Terence R Spies
Original Assignee
Voltage Security Inc
Rishi R Kacker
Guido Appenzeller
Matthew J Pauker
Terence R Spies
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, Rishi R Kacker, Guido Appenzeller, Matthew J Pauker, Terence R Spies filed Critical Voltage Security Inc
Priority to CA2515078A priority Critical patent/CA2515078C/en
Priority to EP04707830A priority patent/EP1593221A4/en
Priority to JP2006503306A priority patent/JP4619354B2/en
Publication of WO2004073230A2 publication Critical patent/WO2004073230A2/en
Publication of WO2004073230A3 publication Critical patent/WO2004073230A3/en

Links

Classifications

    • 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
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/065—Network architectures or network communication protocols for network security for supporting key management in a packet data network for group communications
    • 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
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H04L63/101—Access control lists [ACL]
    • 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
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash
    • 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
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/603—Digital right managament [DRM]
    • 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
    • H04L2209/68—Special signature format, e.g. XML format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
    • H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management

Abstract

A system is provided that allows encrypted content to be distributed to users over a communications network. A policy enforcement service may use an identity-based encryption algorithm to generate public parameter information and private keys. Data content may be encrypted prior to distribution using an identity-based encryption engine. The encryption engine may use the public parameter information from the policy service and public key information to encrypt the data. The public key information may be based on policy information that specifies which types of users are allowed to access the data that is encrypted using that public key. A user may obtain a private key for unlocking particular encrypted data by providing a key request to the policy enforcement service that contains the public key. The policy enforcement service may enforce the policies given by the policy information and may provide private keys only to authorized users.
PCT/US2004/003144 2003-02-05 2004-02-03 Identity-based encryption system for secure data distribution WO2004073230A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2515078A CA2515078C (en) 2003-02-05 2004-02-03 Identity-based encryption system for secure data distribution
EP04707830A EP1593221A4 (en) 2003-02-05 2004-02-03 Identity-based encryption system for secure data distribution
JP2006503306A JP4619354B2 (en) 2003-02-05 2004-02-03 An encryption system based on identification information for secure data delivery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/361,192 2003-02-05
US10/361,192 US7003117B2 (en) 2003-02-05 2003-02-05 Identity-based encryption system for secure data distribution

Publications (2)

Publication Number Publication Date
WO2004073230A2 WO2004073230A2 (en) 2004-08-26
WO2004073230A3 true WO2004073230A3 (en) 2005-02-24

Family

ID=32771383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003144 WO2004073230A2 (en) 2003-02-05 2004-02-03 Identity-based encryption system for secure data distribution

Country Status (5)

Country Link
US (2) US7003117B2 (en)
EP (1) EP1593221A4 (en)
JP (1) JP4619354B2 (en)
CA (1) CA2515078C (en)
WO (1) WO2004073230A2 (en)

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