Patents by Inventor Benjamin C. Jun
Benjamin C. Jun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170099134Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: ApplicationFiled: August 15, 2016Publication date: April 6, 2017Applicant: CRYPTOGRAPHY RESERACH, INC.Inventors: Paul C. KOCHER, Joshua M. JAFFE, Benjamin C. JUN
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Patent number: 9569628Abstract: To prevent piracy, audiovisual content is encrypted prior to transmission to consumers. A low-cost, high-security cryptographic rights module (such as a smartcard) enables devices such as players/displays to decode such content. Security-critical functions may be performed by the cryptographic module in a manner that allows security compromises to be addressed by upgrading or replacing cryptographic modules, thereby avoiding the need to replace or modify other (typically much higher-cost) components. The security module contains cryptographic keys, which it uses to process rights enablement messages (REMs) and key derivation messages (KDMs). From a REM and KDM, the security module derives key data corresponding to content, uses public key and/or symmetric cryptography to re-encrypt the derived key data for another device, and provides the re-encrypted key data to the decoding device. The decoding device then uses cryptographic values derived from the re-encrypted key data to decrypt the content.Type: GrantFiled: March 23, 2006Date of Patent: February 14, 2017Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Benjamin C. Jun, Joshua M. Jaffe
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Patent number: 9419790Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: GrantFiled: November 3, 2014Date of Patent: August 16, 2016Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Publication number: 20150052368Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: ApplicationFiled: November 3, 2014Publication date: February 19, 2015Applicant: CRYPTOGRAPHY RESEARCH, INC.Inventors: PAUL C. KOCHER, JOSHUA M. JAFFE, BENJAMIN C. JUN
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Patent number: 8949624Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: GrantFiled: July 1, 2011Date of Patent: February 3, 2015Assignee: Irdeto USA, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Patent number: 8879724Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: GrantFiled: December 14, 2009Date of Patent: November 4, 2014Assignee: Rambus Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Patent number: 8571993Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: GrantFiled: June 17, 2011Date of Patent: October 29, 2013Assignee: Irdeto USA, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Patent number: 8055910Abstract: Technologies to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disk (200) carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations (225), access secure non-volatile storage, submit data to CODECs for output (250), and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: GrantFiled: July 7, 2004Date of Patent: November 8, 2011Assignee: Rovi Solutions CorporationInventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Publication number: 20110264923Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: ApplicationFiled: July 1, 2011Publication date: October 27, 2011Applicant: Rovi Solutions CorporationInventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Publication number: 20110255690Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: ApplicationFiled: June 17, 2011Publication date: October 20, 2011Applicant: Rovi Solutions CorporationInventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Patent number: 7987510Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: GrantFiled: July 7, 2003Date of Patent: July 26, 2011Assignee: Rovi Solutions CorporationInventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Patent number: 7787620Abstract: Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1 and M2), each associated with a permutation (i.e., K1P, K2P and M1P, M2P) such that K1P{K1} XOR K2P{K2} equals the “standard” DES key K, and M1P{M1} XOR M2P{M2} equals the “standard” message. During operation of the device, the tables are preferably periodically updated, by introducing fresh entropy into the tables faster than information leaks out, so that attackers will not be able to obtain the table contents by analysis of measurements. The technique is implementable in cryptographic smartcards, tamper resistant chips, and secure processing systems of all kinds.Type: GrantFiled: October 18, 2005Date of Patent: August 31, 2010Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Publication number: 20100091982Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: ApplicationFiled: December 14, 2009Publication date: April 15, 2010Inventors: Paul C. KOCHER, Joshua M. Jaffe, Benjamin C. Jun
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Patent number: 7668310Abstract: Methods and apparatuses are disclosed for improving DES and other cryptographic protocols against external monitoring attacks by reducing the amount (and signal-to-noise ratio) of useful information leaked during processing. An improved DES implementation of the invention instead uses two 56-bit keys (K1 and K2) and two 64-bit plaintext messages (M1 and M2), each associated with a permutation (i.e., K1P, K2P and M1P, M2P) such that K1P{K1} XOR K2P {K2} equals the “standard” DES key K, and M1P{M1} XOR M2P{M2} equals the “standard” message. During operation of the device, the tables are preferably periodically updated, by introducing fresh entropy into the tables faster than information leaks out, so that attackers will not be able to obtain the table contents by analysis of measurements. The technique is implementable in cryptographic smartcards, tamper resistant chips, and secure processing systems of all kinds.Type: GrantFiled: August 15, 2001Date of Patent: February 23, 2010Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Patent number: 7634083Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: GrantFiled: December 21, 2006Date of Patent: December 15, 2009Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Patent number: 7599488Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: GrantFiled: October 29, 2007Date of Patent: October 6, 2009Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Patent number: 7587044Abstract: Information leaked from smart cards and other tamper resistant cryptographic devices can be statistically analyzed to determine keys or other secret data. A data collection and analysis system is configured with an analog-to-digital converter connected to measure the device's consumption of electrical power, or some other property of the target device, that varies during the device's processing. As the target device performs cryptographic operations, data from the A/D converter are recorded for each cryptographic operation. The stored data are then processed using statistical analysis, yielding the entire key, or partial information about the key that can be used to accelerate a brute force search or other attack.Type: GrantFiled: December 3, 2001Date of Patent: September 8, 2009Assignee: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun
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Publication number: 20080137848Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: ApplicationFiled: October 31, 2007Publication date: June 12, 2008Applicant: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson
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Publication number: 20080130886Abstract: In an exemplary embodiment, digital content is mastered as a combination of encrypted data and data processing operations that enable use in approved playback environments. Player devices having a processing environment compatible with the content's data processing operations are able to decrypt and play the content. Players can also provide content with basic functions, such as loading data from media, performing network communications, determining playback environment configuration, controlling decryption/playback, and/or performing cryptographic operations using the player's keys. These functions allow the content to implement and enforce its own security policies. If pirates compromise individual players or content titles, new content can be mastered with new security features that block the old attacks. A selective decryption capability can also be provided, enabling on-the-fly watermark insertion so that attacks can be traced back to a particular player.Type: ApplicationFiled: October 31, 2007Publication date: June 5, 2008Applicant: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Matthew T. Carter, Peter K. Pearson
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Publication number: 20080133938Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.Type: ApplicationFiled: October 31, 2007Publication date: June 5, 2008Applicant: Cryptography Research, Inc.Inventors: Paul C. Kocher, Joshua M. Jaffe, Benjamin C. Jun, Carter C. Laren, Peter K. Pearson, Nathaniel J. Lawson