CA2145926A1 - Method and Apparatus for Enabling Trial Period Use of Software Products: Method and Apparatus for Generating a Machine-Dependent Identification - Google Patents

Method and Apparatus for Enabling Trial Period Use of Software Products: Method and Apparatus for Generating a Machine-Dependent Identification

Info

Publication number
CA2145926A1
CA2145926A1 CA2145926A CA2145926A CA2145926A1 CA 2145926 A1 CA2145926 A1 CA 2145926A1 CA 2145926 A CA2145926 A CA 2145926A CA 2145926 A CA2145926 A CA 2145926A CA 2145926 A1 CA2145926 A1 CA 2145926A1
Authority
CA
Canada
Prior art keywords
user
long
lived
key
generating
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.)
Granted
Application number
CA2145926A
Other languages
French (fr)
Other versions
CA2145926C (en
Inventor
Thomas Edward Cooper
Hudson Wayne Philips
Robert Franklin Pryor
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of CA2145926A1 publication Critical patent/CA2145926A1/en
Application granted granted Critical
Publication of CA2145926C publication Critical patent/CA2145926C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • 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]
    • G06F21/12—Protecting executable software
    • G06F21/121—Restricting unauthorised execution of programs
    • G06F21/125—Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
    • G06F21/126—Interacting with the operating system
    • 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]
    • G06F21/106—Enforcing content protection by specific content processing
    • G06F21/1063—Personalisation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2137—Time limited access, e.g. to a computer or data

Abstract

A method and apparatus is provided for distributing a software object from a source to a user.
A software object is encrypted with an encryption operation utilizing a long-lived encryption key.
It is directed from the source to the user. It is loaded onto a user-controlled data processing system having a particular configuration. A numerical machine identification is derived based at least in part upon the particular data processing system configuration of the user-controlled data processing system. A temporary key is derived which is based at least in part upon the numerical machine identification and the long-lived encryption key. The long-lived key generator is provided for receiving the temporary key and producing the long-lived encryption key. The user is allowed to utilize the temporary key for a prescribed interval to generate the long-lived encryption key to access the software object.
CA002145926A 1994-04-25 1995-03-30 Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification Expired - Lifetime CA2145926C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US235,032 1981-02-17
US08/235,032 US5757907A (en) 1994-04-25 1994-04-25 Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification

Publications (2)

Publication Number Publication Date
CA2145926A1 true CA2145926A1 (en) 1995-10-26
CA2145926C CA2145926C (en) 1999-03-02

Family

ID=22883791

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002145926A Expired - Lifetime CA2145926C (en) 1994-04-25 1995-03-30 Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification

Country Status (6)

Country Link
US (1) US5757907A (en)
EP (1) EP0679980B1 (en)
JP (1) JPH07295801A (en)
KR (1) KR100200443B1 (en)
CA (1) CA2145926C (en)
DE (1) DE69531079T2 (en)

Families Citing this family (158)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030078097A1 (en) * 1993-05-10 2003-04-24 Takeya Okamoto Interactive communication system for communicating video game and karaoke software
US20050149450A1 (en) * 1994-11-23 2005-07-07 Contentguard Holdings, Inc. System, method, and device for controlling distribution and use of digital works based on a usage rights grammar
US6963859B2 (en) * 1994-11-23 2005-11-08 Contentguard Holdings, Inc. Content rendering repository
JPH08263438A (en) 1994-11-23 1996-10-11 Xerox Corp Distribution and use control system of digital work and access control method to digital work
KR970002625A (en) * 1995-06-15 1997-01-28 김광호 How to lock a program to prevent illegal copying of applications
EP0787328B1 (en) * 1995-08-11 2002-10-23 International Business Machines Corporation Method for verifying the configuration of a computer system
JP3688356B2 (en) * 1995-08-31 2005-08-24 富士通株式会社 Licensee notification system
US5857021A (en) * 1995-11-07 1999-01-05 Fujitsu Ltd. Security system for protecting information stored in portable storage media
JP3627384B2 (en) * 1996-01-17 2005-03-09 富士ゼロックス株式会社 Information processing apparatus with software protection function and information processing method with software protection function
US6002771A (en) * 1996-05-22 1999-12-14 Sun Microsystems, Inc. Method and system for regulating discounts on merchandise distributed through networked computer systems
US7917643B2 (en) * 1996-09-12 2011-03-29 Audible, Inc. Digital information library and delivery system
US5926624A (en) 1996-09-12 1999-07-20 Audible, Inc. Digital information library and delivery system with logic for generating files targeted to the playback device
US6233684B1 (en) * 1997-02-28 2001-05-15 Contenaguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermaking
US5923842A (en) * 1997-03-06 1999-07-13 Citrix Systems, Inc. Method and apparatus for simultaneously providing anonymous user login for multiple users
US6112192A (en) * 1997-05-09 2000-08-29 International Business Machines Corp. Method for providing individually customized content in a network
US7290288B2 (en) 1997-06-11 2007-10-30 Prism Technologies, L.L.C. Method and system for controlling access, by an authentication server, to protected computer resources provided via an internet protocol network
JP3588536B2 (en) * 1997-07-11 2004-11-10 株式会社東芝 Unauthorized data copy prevention apparatus and method
US6073122A (en) * 1997-08-15 2000-06-06 Lucent Technologies Inc. Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers
US6385614B1 (en) 1998-01-14 2002-05-07 Netlibrary Inc. Electronic bookshelf with multi-user features
US6385596B1 (en) 1998-02-06 2002-05-07 Liquid Audio, Inc. Secure online music distribution system
US6324649B1 (en) * 1998-03-02 2001-11-27 Compaq Computer Corporation Modified license key entry for pre-installation of software
US6915271B1 (en) 1998-03-11 2005-07-05 The Product Engine, Inc. Method and system for delivering redeeming dynamically and adaptively characterized promotional incentives on a computer network
US7246246B2 (en) 1998-04-17 2007-07-17 Iomega Corporation System for keying protected electronic data to particular media to prevent unauthorized copying using a compound key
US6298443B1 (en) * 1998-04-24 2001-10-02 Dell Usa, L.P. Method and system for supplying a custom software image to a computer system
US7503072B2 (en) 1998-04-29 2009-03-10 Microsoft Corporation Hardware ID to prevent software piracy
US6243468B1 (en) * 1998-04-29 2001-06-05 Microsoft Corporation Software anti-piracy system that adapts to hardware upgrades
US6253237B1 (en) * 1998-05-20 2001-06-26 Audible, Inc. Personalized time-shifted programming
FR2779543B1 (en) * 1998-06-04 2001-08-17 Eastman Kodak Co SOFTWARE PROTECTION METHOD
EP1093604A1 (en) * 1998-06-18 2001-04-25 Babak Ahmadi Bait software
ATE360866T1 (en) * 1998-07-02 2007-05-15 Cryptography Res Inc LEAK-RESISTANT UPDATING OF AN INDEXED CRYPTOGRAPHIC KEY
ATE343169T1 (en) * 1998-08-31 2006-11-15 Irdeto Access Bv SYSTEM FOR SUPPLYING ENCRYPTED DATA, SYSTEM FOR DECRYPTING ENCRYPTED DATA AND METHOD FOR PROVIDING A COMMUNICATIONS INTERFACE IN SUCH A SYSTEM
DE19846065C2 (en) * 1998-10-06 2000-09-07 Oce Printing Systems Gmbh Procedure for copy-protected commissioning of a user program
US6434535B1 (en) 1998-11-13 2002-08-13 Iomega Corporation System for prepayment of electronic content using removable media and for prevention of unauthorized copying of same
US6751670B1 (en) * 1998-11-24 2004-06-15 Drm Technologies, L.L.C. Tracking electronic component
US20030195974A1 (en) 1998-12-04 2003-10-16 Ronning Joel A. Apparatus and method for scheduling of search for updates or downloads of a file
US7617124B1 (en) 1998-12-04 2009-11-10 Digital River, Inc. Apparatus and method for secure downloading of files
US7058597B1 (en) 1998-12-04 2006-06-06 Digital River, Inc. Apparatus and method for adaptive fraud screening for electronic commerce transactions
US8175977B2 (en) 1998-12-28 2012-05-08 Audible License management for digital content
US7127515B2 (en) 1999-01-15 2006-10-24 Drm Technologies, Llc Delivering electronic content
US6449645B1 (en) 1999-01-19 2002-09-10 Kenneth L. Nash System for monitoring the association of digitized information having identification indicia with more than one of uniquely identified computers in a network for illegal use detection
US6691226B1 (en) * 1999-03-16 2004-02-10 Western Digital Ventures, Inc. Computer system with disk drive having private key validation means for enabling features
US7814335B2 (en) * 1999-03-18 2010-10-12 Dell Products L.P. System and method for installing system manufacturer provided software
US6367019B1 (en) 1999-03-26 2002-04-02 Liquid Audio, Inc. Copy security for portable music players
US20020019814A1 (en) * 2001-03-01 2002-02-14 Krishnamurthy Ganesan Specifying rights in a digital rights license according to events
US6829708B1 (en) 1999-03-27 2004-12-07 Microsoft Corporation Specifying security for an element by assigning a scaled value representative of the relative security thereof
US6721891B1 (en) 1999-03-29 2004-04-13 Activcard Ireland Limited Method of distributing piracy protected computer software
US6681212B1 (en) * 1999-04-23 2004-01-20 Nianning Zeng Internet-based automated system and a method for software copyright protection and sales
US6848047B1 (en) * 1999-04-28 2005-01-25 Casio Computer Co., Ltd. Security managing system, data distribution apparatus and portable terminal apparatus
US6966002B1 (en) 1999-04-30 2005-11-15 Trymedia Systems, Inc. Methods and apparatus for secure distribution of software
US7360252B1 (en) 1999-04-30 2008-04-15 Macrovision Corporation Method and apparatus for secure distribution of software
WO2000075760A1 (en) * 1999-06-07 2000-12-14 Firepad, Inc. Method and system for preventing the unauthorized use of software
US20050246549A1 (en) * 1999-06-09 2005-11-03 Andres Torrubia-Saez Methods and apparatus for secure distribution of software
US6683954B1 (en) * 1999-10-23 2004-01-27 Lockstream Corporation Key encryption using a client-unique additional key for fraud prevention
US6742129B1 (en) * 1999-12-08 2004-05-25 Carrier Corporation Software security mechanism
US6847948B1 (en) * 1999-12-20 2005-01-25 International Business Machines Corporation Method and apparatus for secure distribution of software/data
US6944765B1 (en) * 1999-12-21 2005-09-13 Qualcomm, Inc. Method of authentication anonymous users while reducing potential for “middleman” fraud
US6654888B1 (en) * 1999-12-31 2003-11-25 International Business Machines Corporation Installing and controlling trial software
US6772340B1 (en) * 2000-01-14 2004-08-03 Microsoft Corporation Digital rights management system operating on computing device and having black box tied to computing device
AU2000269232A1 (en) 2000-01-14 2001-07-24 Microsoft Corporation Specifying security for an element by assigning a scaled value representative ofthe relative security thereof
JP2001211171A (en) 2000-01-28 2001-08-03 Advantest Corp Device and method for equipment authentication and recording medium with storing authentication program
JP2001219440A (en) * 2000-02-09 2001-08-14 Sony Disc Technology Inc Multi-cavity molding apparatus and its molding method
US20070271191A1 (en) * 2000-03-09 2007-11-22 Andres Torrubia-Saez Method and apparatus for secure distribution of software
JP2001350946A (en) * 2000-06-05 2001-12-21 Nec Corp Experience purchase system and customer information collection system
US7020773B1 (en) 2000-07-17 2006-03-28 Citrix Systems, Inc. Strong mutual authentication of devices
US7051211B1 (en) 2000-08-21 2006-05-23 International Business Machines Corporation Secure software distribution and installation
DE50007300D1 (en) * 2000-08-24 2004-09-09 Wibu Systems Ag Process for the protection of computer software and / or computer-readable data and protective device
US8225414B2 (en) * 2000-08-28 2012-07-17 Contentguard Holdings, Inc. Method and apparatus for identifying installed software and regulating access to content
US6931545B1 (en) * 2000-08-28 2005-08-16 Contentguard Holdings, Inc. Systems and methods for integrity certification and verification of content consumption environments
US7743259B2 (en) 2000-08-28 2010-06-22 Contentguard Holdings, Inc. System and method for digital rights management using a standard rendering engine
DE10046895A1 (en) * 2000-09-21 2002-04-25 Siemens Ag Process for the transmission of encrypted information for the registration of an application program
US7237123B2 (en) * 2000-09-22 2007-06-26 Ecd Systems, Inc. Systems and methods for preventing unauthorized use of digital content
CA2435624C (en) 2000-09-22 2013-05-07 Richard B. Levine Systems and methods for preventing unauthorized use of digital content
US6986040B1 (en) 2000-11-03 2006-01-10 Citrix Systems, Inc. System and method of exploiting the security of a secure communication channel to secure a non-secure communication channel
US7343324B2 (en) * 2000-11-03 2008-03-11 Contentguard Holdings Inc. Method, system, and computer readable medium for automatically publishing content
US7962416B1 (en) * 2000-11-22 2011-06-14 Ge Medical Technology Services, Inc. Method and system to remotely enable software-based options for a trial period
US20020073312A1 (en) * 2000-12-08 2002-06-13 International Business Machines Corporation Secure electronic software distribution
US20020083058A1 (en) * 2000-12-27 2002-06-27 Meng-Ling Hsiao Method, apparatus and article for reference material management
US6912294B2 (en) * 2000-12-29 2005-06-28 Contentguard Holdings, Inc. Multi-stage watermarking process and system
US6754642B2 (en) 2001-05-31 2004-06-22 Contentguard Holdings, Inc. Method and apparatus for dynamically assigning usage rights to digital works
US8069116B2 (en) * 2001-01-17 2011-11-29 Contentguard Holdings, Inc. System and method for supplying and managing usage rights associated with an item repository
US7774279B2 (en) * 2001-05-31 2010-08-10 Contentguard Holdings, Inc. Rights offering and granting
US20030220880A1 (en) * 2002-01-17 2003-11-27 Contentguard Holdings, Inc. Networked services licensing system and method
US7206765B2 (en) * 2001-01-17 2007-04-17 Contentguard Holdings, Inc. System and method for supplying and managing usage rights based on rules
US20020120726A1 (en) * 2001-02-23 2002-08-29 Microsoft Corporation Method and system for providing a software license via the telephone
US7328453B2 (en) * 2001-05-09 2008-02-05 Ecd Systems, Inc. Systems and methods for the prevention of unauthorized use and manipulation of digital content
US20030043852A1 (en) * 2001-05-18 2003-03-06 Bijan Tadayon Method and apparatus for verifying data integrity based on data compression parameters
WO2002095747A1 (en) * 2001-05-18 2002-11-28 Michtchenko Valentin Alexandro Method for recording, for distributing and reproducing information recorded on data carriers
US8275709B2 (en) * 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US8099364B2 (en) * 2001-05-31 2012-01-17 Contentguard Holdings, Inc. Digital rights management of content when content is a future live event
US20030009424A1 (en) * 2001-05-31 2003-01-09 Contentguard Holdings, Inc. Method for managing access and use of resources by verifying conditions and conditions for use therewith
US7152046B2 (en) * 2001-05-31 2006-12-19 Contentguard Holdings, Inc. Method and apparatus for tracking status of resource in a system for managing use of the resources
US8275716B2 (en) 2001-05-31 2012-09-25 Contentguard Holdings, Inc. Method and system for subscription digital rights management
US6973445B2 (en) * 2001-05-31 2005-12-06 Contentguard Holdings, Inc. Demarcated digital content and method for creating and processing demarcated digital works
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
US7222104B2 (en) * 2001-05-31 2007-05-22 Contentguard Holdings, Inc. Method and apparatus for transferring usage rights and digital work having transferrable usage rights
US8001053B2 (en) * 2001-05-31 2011-08-16 Contentguard Holdings, Inc. System and method for rights offering and granting using shared state variables
US6895503B2 (en) * 2001-05-31 2005-05-17 Contentguard Holdings, Inc. Method and apparatus for hierarchical assignment of rights to documents and documents having such rights
US7725401B2 (en) * 2001-05-31 2010-05-25 Contentguard Holdings, Inc. Method and apparatus for establishing usage rights for digital content to be created in the future
US7853531B2 (en) * 2001-06-07 2010-12-14 Contentguard Holdings, Inc. Method and apparatus for supporting multiple trust zones in a digital rights management system
AU2002345577A1 (en) * 2001-06-07 2002-12-23 Contentguard Holdings, Inc. Protected content distribution system
US7774280B2 (en) * 2001-06-07 2010-08-10 Contentguard Holdings, Inc. System and method for managing transfer of rights using shared state variables
EP1393230A4 (en) * 2001-06-07 2004-07-07 Contentguard Holdings Inc Method and apparatus managing the transfer of rights
US20050198379A1 (en) 2001-06-13 2005-09-08 Citrix Systems, Inc. Automatically reconnecting a client across reliable and persistent communication sessions
US7100200B2 (en) 2001-06-13 2006-08-29 Citrix Systems, Inc. Method and apparatus for transmitting authentication credentials of a user across communication sessions
US7979914B2 (en) * 2001-06-25 2011-07-12 Audible, Inc. Time-based digital content authorization
US7421411B2 (en) * 2001-07-06 2008-09-02 Nokia Corporation Digital rights management in a mobile communications environment
US7224805B2 (en) 2001-07-06 2007-05-29 Nokia Corporation Consumption of content
GB0116489D0 (en) * 2001-07-06 2001-08-29 Nokia Corp Improvements in and relating to consumption of content
US20030041167A1 (en) * 2001-08-15 2003-02-27 International Business Machines Corporation Method and system for managing secure geographic boundary resources within a network management framework
US7343487B2 (en) * 2001-10-10 2008-03-11 Nokia Corporation Datacast distribution system
US7562397B1 (en) * 2002-02-27 2009-07-14 Mithal Ashish K Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof
US7316032B2 (en) * 2002-02-27 2008-01-01 Amad Tayebi Method for allowing a customer to preview, acquire and/or pay for information and a system therefor
AU2002354094B2 (en) 2001-12-13 2006-10-19 Sony Interactive Entertainment Inc. Methods and apparatus for secure distribution of program content
AU2002354095B2 (en) 2001-12-21 2008-01-10 Sony Interactive Entertainment Inc. Methods and apparatus for secure distribution of program content
US7984157B2 (en) 2002-02-26 2011-07-19 Citrix Systems, Inc. Persistent and reliable session securely traversing network components using an encapsulating protocol
US7661129B2 (en) 2002-02-26 2010-02-09 Citrix Systems, Inc. Secure traversal of network components
US8216071B2 (en) * 2002-03-20 2012-07-10 Intel Corporation Method and apparatus for software delivery and management
US7249262B2 (en) 2002-05-06 2007-07-24 Browserkey, Inc. Method for restricting access to a web site by remote users
US7281273B2 (en) * 2002-06-28 2007-10-09 Microsoft Corporation Protecting content on medium from unfettered distribution
US20040006541A1 (en) * 2002-07-08 2004-01-08 International Business Corporation Method and system for purchasing broadcast content
US20050195975A1 (en) * 2003-01-21 2005-09-08 Kevin Kawakita Digital media distribution cryptography using media ticket smart cards
US7370212B2 (en) 2003-02-25 2008-05-06 Microsoft Corporation Issuing a publisher use license off-line in a digital rights management (DRM) system
US7290149B2 (en) * 2003-03-03 2007-10-30 Microsoft Corporation Verbose hardware identification for binding a software package to a computer system having tolerance for hardware changes
US7278131B2 (en) * 2003-03-03 2007-10-02 Microsoft Corporation Compact hardware identification for binding a software package to a computer system having tolerance for hardware changes
US7565531B2 (en) 2003-05-13 2009-07-21 Chi-Chian Yu Locking programming interface
US8584249B2 (en) * 2003-05-16 2013-11-12 Phu Sang Ltd., Llc System for preventing unauthorized use of digital content
TW200512647A (en) * 2003-09-25 2005-04-01 Genesys Logic Inc System and method for authenticating software installation on different personal computers, associated computer system and associated computer-readable recording media
US7421741B2 (en) 2003-10-20 2008-09-02 Phillips Ii Eugene B Securing digital content system and method
US8627489B2 (en) 2003-10-31 2014-01-07 Adobe Systems Incorporated Distributed document version control
US7930757B2 (en) * 2003-10-31 2011-04-19 Adobe Systems Incorporated Offline access in a document control system
US8108672B1 (en) 2003-10-31 2012-01-31 Adobe Systems Incorporated Transparent authentication process integration
EP1550931A1 (en) * 2003-12-31 2005-07-06 Neopost S.A. Unlocking of a locked functionality of a computer-controlled apparatus
GB0411560D0 (en) * 2004-05-24 2004-06-23 Protx Group Ltd A method of encrypting and transferring data between a sender and a receiver using a network
EP1635529A1 (en) * 2004-09-09 2006-03-15 Daniel Akenine Method and computer product for proving time and content of data records in a monitored system
EP1803062A1 (en) 2004-09-20 2007-07-04 Sony Computer Entertainment Inc. Methods and apparatus for distributing software applications
US7995758B1 (en) 2004-11-30 2011-08-09 Adobe Systems Incorporated Family of encryption keys
US20060161968A1 (en) * 2004-12-21 2006-07-20 Nintendo Co., Ltd. Method and apparatus for secure delivery and evaluation of prototype software over a network
US8725646B2 (en) 2005-04-15 2014-05-13 Microsoft Corporation Output protection levels
US20060265758A1 (en) 2005-05-20 2006-11-23 Microsoft Corporation Extensible media rights
US9497172B2 (en) 2005-05-23 2016-11-15 Litera Corp. Method of encrypting and transferring data between a sender and a receiver using a network
US20060271915A1 (en) * 2005-05-24 2006-11-30 Contentguard Holdings, Inc. Usage rights grammar and digital works having usage rights created with the grammar
US8832047B2 (en) 2005-07-27 2014-09-09 Adobe Systems Incorporated Distributed document version control
US7438078B2 (en) * 2005-08-05 2008-10-21 Peter Woodruff Sleeping bag and system
US20070079238A1 (en) * 2005-10-05 2007-04-05 Sbc Knowledge Ventures, L.P. Computer executable graphical user interface engine, system, and method therefor
EP1796000A1 (en) * 2005-12-06 2007-06-13 International Business Machines Corporation Method, system and computer program for distributing software products in trial mode
US8135645B2 (en) * 2005-12-06 2012-03-13 Microsoft Corporation Key distribution for secure messaging
US7970691B1 (en) * 2006-02-13 2011-06-28 Magma Management, Inc. Method for securing licensing agreements on new products
WO2007107658A1 (en) * 2006-03-22 2007-09-27 France Telecom Method for access control, method for using a database, installation, computer program and database
JP2009027525A (en) * 2007-07-20 2009-02-05 Nec Corp Optical transmission system and optical transmission method
US9098676B2 (en) * 2008-04-16 2015-08-04 Safenet, Inc. System and methods for detecting rollback
US20100325200A1 (en) * 2009-06-22 2010-12-23 Craig Stephen Etchegoyen System and Method for Software Activation Through Digital Media Fingerprinting
US20110066843A1 (en) * 2009-09-16 2011-03-17 Brent Newman Mobile media play system and method
US9684781B2 (en) 2010-11-12 2017-06-20 Hewlett Packard Enterprise Development Lp Determine authorization of a software product based on a first and second authorization item
CN104462872B (en) * 2013-09-13 2018-11-06 北大方正集团有限公司 Terminal, server and digital Content-Authorize method
WO2016145377A1 (en) * 2015-03-12 2016-09-15 Visa International Service Association Mutual authentication of software layers
ITUB20153847A1 (en) 2015-09-24 2017-03-24 Cinello S R L ELECTRONIC SYSTEM AND METHOD OF MANAGEMENT OF DIGITAL CONTENT RELATED TO WORKS OF ART SUITABLE FOR PREVENTING ITS UNCONTROLLED DIFFUSION
CN108989024B (en) * 2018-06-29 2023-04-14 百度在线网络技术（北京）有限公司 Method, device and equipment for controlling communication between ECUs and corresponding vehicle
US11422977B1 (en) * 2021-10-15 2022-08-23 Morgan Stanley Services Group Inc. High-compression, high-volume deduplication cache

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588991A (en) * 1983-03-07 1986-05-13 Atalla Corporation File access security method and means
US4888798A (en) * 1985-04-19 1989-12-19 Oms, Inc. Modular software security
US5021997A (en) * 1986-09-29 1991-06-04 At&T Bell Laboratories Test automation system
US5109413A (en) * 1986-11-05 1992-04-28 International Business Machines Corporation Manipulating rights-to-execute in connection with a software copy protection mechanism
EP0268139A3 (en) * 1986-11-05 1991-04-10 International Business Machines Corporation Manipulating rights-to-execute in connection with a software copy protection mechanism
US5155847A (en) * 1988-08-03 1992-10-13 Minicom Data Corporation Method and apparatus for updating software at remote locations
US5166886A (en) * 1989-07-31 1992-11-24 Molnar Charles E System to demonstrate and sell computer programs
JP3073590B2 (en) * 1992-03-16 2000-08-07 富士通株式会社 Electronic data protection system, licensor's device and user's device
NZ255971A (en) * 1992-09-21 1997-05-26 Uniloc Singapore Private Ltd Software registration and licensing system uses matching of licensee indentification codes
US5293422A (en) * 1992-09-23 1994-03-08 Dynatek, Inc. Usage control system for computer software
US5327563A (en) * 1992-11-13 1994-07-05 Hewlett-Packard Method for locking software files to a specific storage device
US5341429A (en) * 1992-12-04 1994-08-23 Testdrive Corporation Transformation of ephemeral material
US5337357A (en) * 1993-06-17 1994-08-09 Software Security, Inc. Method of software distribution protection

Also Published As

Publication number Publication date
KR100200443B1 (en) 1999-06-15
CA2145926C (en) 1999-03-02
US5757907A (en) 1998-05-26
JPH07295801A (en) 1995-11-10
DE69531079T2 (en) 2004-04-22
DE69531079D1 (en) 2003-07-24
EP0679980B1 (en) 2003-06-18
KR950029929A (en) 1995-11-24
EP0679980A1 (en) 1995-11-02

Similar Documents

Publication Publication Date Title
CA2145926A1 (en) Method and Apparatus for Enabling Trial Period Use of Software Products: Method and Apparatus for Generating a Machine-Dependent Identification
GB9605351D0 (en) Apparatus for key distribution in an encryption system
AU6761996A (en) Method and apparatus for encryption key creation
DE69718754T2 (en) Combined remote access and security system
EP0706118A4 (en) Data protection system
EP0663124A4 (en) Method and apparatus for efficient real-time authentication and encryption in a communication system
EP0861539A4 (en) Efficient cryptographic hash functions and methods for amplifying the security of hash functions and pseudo-random functions
AU1125397A (en) An apparatus and method for cryptographic companion imprinting
CA2145922A1 (en) Method and Apparatus for Enabling Trial Period Use of Software Products: Method and Apparatus for Utilizing an Encryption Header
GB9213169D0 (en) Cryptographic key management apparatus and method
IL135770A0 (en) Virtual matrix encryption (vme) and virtual key cryptographic method and apparatus
EP0686906A3 (en) Method and apparatus for enhancing software security and distributing software
SG49878A1 (en) Uniform control template generating system and method for process control programming
SG83093A1 (en) Encryption/decryption method and encryption/ decryption apparatus
KR100224515B1 (en) Circuit and method for generating cryptographic keys
CA2010450A1 (en) Method for encrypting transmitted data using a unique key
AU1274599A (en) Method and apparatus for generating encryption stream ciphers
EP0809214A4 (en) Image generation apparatus, image generation method, game machine using the method, and medium
AU4805096A (en) Process for encrypting a fingerprint onto an I.D. card
DE19581586T1 (en) Device for generating encryption / decryption lookup tables using a session key
EP0810509A4 (en) Device for generating characteristic time and authentication apparatus using such device
AU2815795A (en) Gaming system and process for generating card faces
GB9500437D0 (en) Transformation pattern generating device and encryption function device
EP0843863A4 (en) Method and apparatus for generating image textures
AU2697792A (en) Method and apparatus for public key exchange in a cryptographic system

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20150330