WO2001046782A3 - Method of pre-releasing encrypted digital data - Google Patents

Method of pre-releasing encrypted digital data Download PDF

Info

Publication number
WO2001046782A3
WO2001046782A3 PCT/US2000/042780 US0042780W WO0146782A3 WO 2001046782 A3 WO2001046782 A3 WO 2001046782A3 US 0042780 W US0042780 W US 0042780W WO 0146782 A3 WO0146782 A3 WO 0146782A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital content
release time
encryption key
encrypted digital
content
Prior art date
Application number
PCT/US2000/042780
Other languages
French (fr)
Other versions
WO2001046782A2 (en
Inventor
Rajasekhar Abburi
Original Assignee
Microsoft Corp
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 Microsoft Corp filed Critical Microsoft Corp
Priority to AU47174/01A priority Critical patent/AU4717401A/en
Priority to JP2001547232A priority patent/JP2003519942A/en
Priority to EP00992916A priority patent/EP1259865A2/en
Publication of WO2001046782A2 publication Critical patent/WO2001046782A2/en
Publication of WO2001046782A3 publication Critical patent/WO2001046782A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]

Abstract

A method for pre-releasing digital content is disclosed. A release time for the digital content is determined and the digital content is encrypted with an encryption key. The encrypted digital cotent is decryptable by a decryption key corresponding to the encryption key. The encrypted digital content is distributed to at least one content user prior to the release time, and the decryption key for the encrypted digital content is released to the content user at the release time. The content user may then decrypt the encrypted digital content with the released decryption key at or after the release time. The encryption key may be selected from an encryption key database having a plurality of entries, where each entry includes a release time for releasing a piece of digital content, and an encryption key for encrypting the digital content that is to be released at the release time.
PCT/US2000/042780 1999-12-16 2000-12-13 Method of pre-releasing encrypted digital data WO2001046782A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU47174/01A AU4717401A (en) 1999-12-16 2000-12-13 Method of pre-releasing digital content and encryption key database for use therewith
JP2001547232A JP2003519942A (en) 1999-12-16 2000-12-13 Method for pre-release of digital content and encryption key database used with the method
EP00992916A EP1259865A2 (en) 1999-12-16 2000-12-13 Method of pre-releasing encrypted digital data

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46472499A 1999-12-16 1999-12-16
US09/464,724 1999-12-16

Publications (2)

Publication Number Publication Date
WO2001046782A2 WO2001046782A2 (en) 2001-06-28
WO2001046782A3 true WO2001046782A3 (en) 2002-09-12

Family

ID=23844996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042780 WO2001046782A2 (en) 1999-12-16 2000-12-13 Method of pre-releasing encrypted digital data

Country Status (4)

Country Link
EP (1) EP1259865A2 (en)
JP (1) JP2003519942A (en)
AU (1) AU4717401A (en)
WO (1) WO2001046782A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9197421B2 (en) 2012-05-15 2015-11-24 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US9210208B2 (en) 2011-06-21 2015-12-08 The Nielsen Company (Us), Llc Monitoring streaming media content
US9313544B2 (en) 2013-02-14 2016-04-12 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US9380356B2 (en) 2011-04-12 2016-06-28 The Nielsen Company (Us), Llc Methods and apparatus to generate a tag for media content

Families Citing this family (21)

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US6876984B2 (en) * 2001-05-31 2005-04-05 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US7085848B2 (en) 2002-03-15 2006-08-01 Microsoft Corporation Time-window-constrained multicast using connection scheduling
GB0208858D0 (en) 2002-04-18 2002-05-29 Hewlett Packard Co Method and apparatus for encrypting/decrypting data
AU2003234420A1 (en) 2002-12-27 2004-07-29 Nielsen Media Research, Inc. Methods and apparatus for transcoding metadata
US7801820B2 (en) * 2003-01-13 2010-09-21 Sony Corporation Real-time delivery of license for previously stored encrypted content
GB2405297B (en) * 2003-08-20 2006-12-20 Vodafone Plc Data distribution
US7594275B2 (en) 2003-10-14 2009-09-22 Microsoft Corporation Digital rights management system
GB2413863A (en) * 2004-05-08 2005-11-09 Ibm Method and system for distribution of information
JP2006042237A (en) * 2004-07-30 2006-02-09 Toshiba Corp Storage medium processing method, storage medium processing apparatus, and program
JP2006195586A (en) * 2005-01-11 2006-07-27 Ntt Docomo Inc Content delivery node, network equipment and sales system
US8341753B2 (en) * 2005-03-10 2012-12-25 Valve Corporation Managing pre-release of a game application over a network
US8225410B2 (en) * 2005-07-08 2012-07-17 At&T Intellectual Property I, L. P. Methods, systems, and devices for securing content
DE102005051577B4 (en) * 2005-10-21 2008-04-30 Engel Solutions Ag Method for encrypting or decrypting data packets of a data stream and signal sequence and data processing system for carrying out the method
JP4979085B2 (en) * 2008-02-26 2012-07-18 Ｋｄｄｉ株式会社 Timed encryption method and apparatus, timed decryption method and apparatus, and timed encryption and decryption system
EP2113857A1 (en) * 2008-04-28 2009-11-04 THOMSON Licensing A method for secure content distribution
ITCR20090044A1 (en) * 2009-12-17 2011-06-18 Alessandro Landi PROCEDURE FOR THE SAFE MANAGEMENT OF SENSITIVE DATA TO KEEP SECRETS IN A PRE-SET TIME INTERVAL.
WO2012177872A2 (en) * 2011-06-21 2012-12-27 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US20150371013A1 (en) * 2012-03-30 2015-12-24 Irdeto Usa, Inc. Method and system for locking content
WO2013147853A1 (en) * 2012-03-30 2013-10-03 Irdeto Usa, Inc Method and system for locking content
US9762965B2 (en) 2015-05-29 2017-09-12 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
WO2017083311A1 (en) * 2015-11-09 2017-05-18 Secure Content Storage Association, Llc Timed release of decryption keys for access to distributed encrypted content

Citations (2)

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US5703951A (en) * 1993-09-14 1997-12-30 Spyrus, Inc. System and method for access data control
US5857020A (en) * 1995-12-04 1999-01-05 Northern Telecom Ltd. Timed availability of secured content provisioned on a storage medium

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US5825876A (en) * 1995-12-04 1998-10-20 Northern Telecom Time based availability to content of a storage medium
JPH1041933A (en) * 1996-07-22 1998-02-13 Fuji Xerox Co Ltd Decoder
JP3657396B2 (en) * 1997-07-07 2005-06-08 株式会社日立製作所 Key management system, key management apparatus, information encryption apparatus, information decryption apparatus, and storage medium storing program
JP3542895B2 (en) * 1997-08-22 2004-07-14 インターナショナル・ビジネス・マシーンズ・コーポレーション Time-constrained cryptosystem
JP3659791B2 (en) * 1998-03-23 2005-06-15 インターナショナル・ビジネス・マシーンズ・コーポレーション Method and system for generating a small time key

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703951A (en) * 1993-09-14 1997-12-30 Spyrus, Inc. System and method for access data control
US5857020A (en) * 1995-12-04 1999-01-05 Northern Telecom Ltd. Timed availability of secured content provisioned on a storage medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9380356B2 (en) 2011-04-12 2016-06-28 The Nielsen Company (Us), Llc Methods and apparatus to generate a tag for media content
US9210208B2 (en) 2011-06-21 2015-12-08 The Nielsen Company (Us), Llc Monitoring streaming media content
US9515904B2 (en) 2011-06-21 2016-12-06 The Nielsen Company (Us), Llc Monitoring streaming media content
US9197421B2 (en) 2012-05-15 2015-11-24 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US9209978B2 (en) 2012-05-15 2015-12-08 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US9313544B2 (en) 2013-02-14 2016-04-12 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media
US9357261B2 (en) 2013-02-14 2016-05-31 The Nielsen Company (Us), Llc Methods and apparatus to measure exposure to streaming media

Also Published As

Publication number Publication date
WO2001046782A2 (en) 2001-06-28
AU4717401A (en) 2001-07-03
JP2003519942A (en) 2003-06-24
EP1259865A2 (en) 2002-11-27

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