Patents by Inventor Yacov Yacobi

Yacov Yacobi 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).

  • Patent number: 8996863
    Abstract: The current application is directed to computationally efficient attribute-based access control that can be used to secure access to stored information in a variety of different types of computational systems. Many of the currently disclosed computationally efficient implementations of attribute-based access control employ hybrid encryption methodologies in which both an attribute-based encryption or a similar, newly-disclosed policy-encryption method as well as a hierarchical-key-derivation method are used to encrypt payload keys that are employed, in turn, to encrypt data that is stored into, and retrieved from, various different types of computational data-storage systems.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 31, 2015
    Inventor: Yacov Yacobi
  • Publication number: 20140201520
    Abstract: The current application is directed to computationally efficient attribute-based access control that can be used to secure access to stored information in a variety of different types of computational systems. Many of the currently disclosed computationally efficient implementations of attribute-based access control employ hybrid encryption methodologies in which both an attribute-based encryption or a similar, newly-disclosed policy-encryption method as well as a hierarchical-key-derivation method are used to encrypt payload keys that are employed, in turn, to encrypt data that is stored into, and retrieved from, various different types of computational data-storage systems.
    Type: Application
    Filed: January 20, 2014
    Publication date: July 17, 2014
    Inventor: Yacov Yacobi
  • Patent number: 8635464
    Abstract: The current application is directed to computationally efficient attribute-based access control that can be used to secure access to stored information in a variety of different types of computational systems. Many of the currently disclosed computationally efficient implementations of attribute-based access control employ hybrid encryption methodologies in which both an attribute-based encryption or a similar, newly-disclosed policy-encryption method as well as a hierarchical-key-derivation method are used to encrypt payload keys that are employed, in turn, to encrypt data that is stored into, and retrieved from, various different types of computational data-storage systems.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: January 21, 2014
    Inventor: Yacov Yacobi
  • Patent number: 8520842
    Abstract: Systems, methods, and computer storage media having computer-executable instructions embodied thereon that maintain privacy during user profiling are provided. A profiling service receives, from a first device, rules for profiling a user. The rules were encrypted using a private key. The profiling service also receives, from a second device, user data. The user data was encrypted using a public key communicated to the second device by the first device. The profiling service then matches the encrypted rules with the encrypted user data, and based on the matching, generates a profile for the user. In embodiments, such a user profile can be utilized to deliver personalized digital content to a user.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: August 27, 2013
    Assignee: Microsoft Corporation
    Inventors: Nir Nice, Ehud Wieder, Boaz Feldbaum, Sefy Ophir, Eran Shamir, Yacov Yacobi, Arie Friedman
  • Patent number: 8433064
    Abstract: Described is a technology comprising a system in which two distrusting parties can submit sets of encrypted keywords using two independent secret keys to a third party who can decide, using only public keys, if the underlying cleartext message of a cryptogram produced by one distrusting party matches that of a cryptogram produced by the other. The third party (e.g., a server) uses generator information corresponding to a generator of an elliptic curve group to determine whether the sets of encrypted keywords match each other. Various ways to provide the generator information based upon the generator are described. Also described is the use of one-ray randomization and two-way randomization as part of the system to protect against dictionary attacks.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: April 30, 2013
    Assignee: Microsoft Corporation
    Inventors: Nir Nice, Yacov Yacobi
  • Publication number: 20120144210
    Abstract: The current application is directed to computationally efficient attribute-based access control that can be used to secure access to stored information in a variety of different types of computational systems. Many of the currently disclosed computationally efficient implementations of attribute-based access control employ hybrid encryption methodologies in which both an attribute-based encryption or a similar, newly-disclosed policy-encryption method as well as a hierarchical-key-derivation method are used to encrypt payload keys that are employed, in turn, to encrypt data that is stored into, and retrieved from, various different types of computational data-storage systems.
    Type: Application
    Filed: October 26, 2011
    Publication date: June 7, 2012
    Inventor: Yacov Yacobi
  • Publication number: 20120023026
    Abstract: The claimed subject matter provides a system and/or a method that facilitates securing a wireless digital transaction. A terminal component can receive a portion of data related to a payment for at least one of a good or a service. A mobile device can include at least one mobile payment card (m-card), wherein the m-card is created by establishing a link to an account associated with a form of currency. The mobile device can employ public-key cryptography (PKC) to securely and wirelessly transmit a payment to the terminal component utilizing the m-card and linked account.
    Type: Application
    Filed: September 30, 2011
    Publication date: January 26, 2012
    Applicant: MICROSOFT CORPORATION
    Inventors: YuQun Chen, Mohammed Moinuddin, Yacov Yacobi
  • Patent number: 8041338
    Abstract: The claimed subject matter provides a system and/or a method that facilitates securing a wireless digital transaction. A terminal component can receive a portion of data related to a payment for at least one of a good or a service. A mobile device can include at least one mobile payment card (m-card), wherein the m-card is created by establishing a link to an account associated with a form of currency. The mobile device can employ public-key cryptography (PKC) to securely and wirelessly transmit a payment to the terminal component utilizing the m-card and linked account.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 18, 2011
    Assignee: Microsoft Corporation
    Inventors: Yuqun Chen, Mohammed Moinuddin, Yacov Yacobi
  • Patent number: 8015177
    Abstract: Method for performing a collaborative search in a computing network. In one implementation, the method may include receiving a search criteria from a user, identifying one or more agents who have performed a search using the search criteria, the agents and the user belonging to the computing network, identifying one or more search results that the agents have previously selected as being relevant to the search criteria, ranking the search results, and displaying the search results according to the ranking.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: September 6, 2011
    Assignee: Microsoft Corporation
    Inventors: Yacov Yacobi, Jim Kajiya
  • Publication number: 20110164746
    Abstract: Systems, methods, and computer storage media having computer-executable instructions embodied thereon that maintain privacy during user profiling are provided. A profiling service receives, from a first device, rules for profiling a user. The rules were encrypted using a private key. The profiling service also receives, from a second device, user data. The user data was encrypted using a public key communicated to the second device by the first device. The profiling service then matches the encrypted rules with the encrypted user data, and based on the matching, generates a profile for the user. In embodiments, such a user profile can be utilized to deliver personalized digital content to a user.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 7, 2011
    Applicant: MICROSOFT CORPORATION
    Inventors: NIR NICE, EHUD WIEDER, BOAZ FELDBAUM, SEFY OPHIR, ERAN SHAMIR, YACOV YACOBI, ARIE FRIEDMAN
  • Publication number: 20110145566
    Abstract: Described is a technology comprising a system in which two distrusting parties can submit sets of encrypted keywords using two independent secret keys to a third party who can decide, using only public keys, if the underlying cleartext message of a cryptogram produced by one distrusting party matches that of a cryptogram produced by the other. The third party (e.g., a server) uses generator information corresponding to a generator of an elliptic curve group to determine whether the sets of encrypted keywords match each other. Various ways to provide the generator information based upon the generator are described. Also described is the use of one-ray randomization and two-way randomization as part of the system to protect against dictionary attacks.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Applicant: Microsoft Corporation
    Inventors: Nir Nice, Yacov Yacobi
  • Patent number: 7957532
    Abstract: A network-based data protection scheme for a mobile device utilizes encryption techniques and a remote key server that stores encryption keys on behalf of the mobile device. The mobile device stores encrypted data, preferably having no unencrypted counterpart stored therewith. On an as-needed basis, the mobile device requests a decryption key (or an encrypted version of a decryption key) from the key server, where the decryption key can be used by the mobile device to decrypt the encrypted information. The key server transmits the decryption key to the mobile device after authenticating the user of the mobile device.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: June 7, 2011
    Assignee: Microsoft Corporation
    Inventors: Yuqun Chen, Zicheng Liu, Mariusz H. Jakubowski, Yacov Yacobi
  • Patent number: 7878398
    Abstract: Techniques are disclosed to enable utilization of randomly-occurring features of a label (whether embedded or naturally inherent) to provide counterfeit-resistant and/or tamper-resistant labels. More specifically, labels including randomly-occurring features are scanned to determine the labels' features. The information from the scan is utilized to provide identifying indicia which uniquely identifies each label and may be later verified against the label features that are present to determine whether the label is genuine. In a described implementation, the identifying indicia may be cryptographically signed.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: February 1, 2011
    Assignee: Microsoft Corporation
    Inventors: Yuqun Chen, Darko Kirovski, Yacov Yacobi, Gideon A. Yuval
  • Patent number: 7769165
    Abstract: A computer-implemented system and method for configuring and operating a white-box cipher is disclosed. In one implementation, the system employs a method for configuring pseudorandom data derived from a key to perform key-scheduling functionality associated with rounds of the cipher. Additionally, the system employs a method for generating white-box executable code, wherein the code hides the pseudorandom data by incorporating it into mathematical operations performed during execution of the rounds. Accordingly, the cipher is suited for white-box applications managing digital rights, such as decoding audio, video and other content.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: August 3, 2010
    Assignee: Microsoft Corporation
    Inventors: Mariusz H. Jakubowski, Ramarathnam Venkatesan, Gideon A. Yuval, Yacov Yacobi, Matthew Cary
  • Patent number: 7716487
    Abstract: A technique for imparting substantial break-once-run-everywhere (BORE) resistance to passive and active software objects, and for controlling access and use of resulting protected objects by a client computer (400). Specifically, a relatively large number, n, of identical watermarks (1720) are embedded throughout a software object (1700), through use of n different secret watermark keys to form a protected object, with each key defining a pointer to a location in the protected object at which a corresponding watermark appears.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: May 11, 2010
    Assignee: Microsoft Corporation
    Inventors: Ramarathnam Venkatesan, Yacov Yacobi
  • Patent number: 7681039
    Abstract: An implementation of a technology is described herein that facilitates rights enforcement of digital goods using watermarks. More particularly, it is a fingerprinting technology for protecting digital goods by detecting collusion as a malicious attack and identifying the participating colluders. If a digital pirate breaks one client and enables this client to avoid watermark detection, all content (both marked/protected an unmarked/free) can be played as unmarked only on that particular client. However, to enable other clients to play content as unmarked, the digital pirate needs to collude the extracted detection keys from many clients in order to create content that can evade watermark detection on all clients. The described implementation significantly improves collusion resistance through a fingerprinting mechanism that can identify the members of a malicious coalition even when their numbers are several orders of magnitude greater than what conventional collusion-protection schemes can accomplish.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: March 16, 2010
    Assignee: Microsoft Corporation
    Inventors: Yacov Yacobi, Henrique Malvar, Darko Kirovski
  • Publication number: 20100044438
    Abstract: Techniques are disclosed to enable utilization of randomly-occurring features of a label (whether embedded or naturally inherent) to provide counterfeit-resistant and/or tamper-resistant labels. More specifically, labels including randomly-occurring features are scanned to determine the labels' features. The information from the scan is utilized to provide identifying indicia which uniquely identifies each label and may be later verified against the label features that are present to determine whether the label is genuine. In a described implementation, the identifying indicia may be cryptographically signed.
    Type: Application
    Filed: February 23, 2009
    Publication date: February 25, 2010
    Applicant: Microsoft Corporation
    Inventors: Yuqun Chen, Darko Kirovski, Yacov Yacobi, Gideon A. Yuval
  • Publication number: 20100004982
    Abstract: Method for calculating a trust value of an agent in a computing network. In one implementation, the method may include receiving information pertaining to a first agent's previous actions, quantifying a discrepancy between an expected behavior and an actual behavior of the first agent during the first agent's previous actions, and determining the trust value of the first agent based on the quantified discrepancy.
    Type: Application
    Filed: November 4, 2008
    Publication date: January 7, 2010
    Applicant: MICROSOFT CORPORATION
    Inventors: Yacov Yacobi, Jim Kajiya
  • Publication number: 20100005089
    Abstract: Method for performing a collaborative search in a computing network. In one implementation, the method may include receiving a search criteria from a user, identifying one or more agents who have performed a search using the search criteria, the agents and the user belonging to the computing network, identifying one or more search results that the agents have previously selected as being relevant to the search criteria, ranking the search results, and displaying the search results according to the ranking.
    Type: Application
    Filed: November 18, 2008
    Publication date: January 7, 2010
    Applicant: MICROSOFT CORPORATION
    Inventors: Yacov Yacobi, Jim Kajiya
  • Publication number: 20090313171
    Abstract: Product registration of an electronic good (e.g., software) over the telephone is made easier by reducing the length of code that is communicated to the electronic good provider (e.g., software provider). More particularly, an electronic goods provider provides a product ID comprising a message and digital signature to a client purchasing their electronic good. The electronic good is registered over a telephone by providing only the digital signature portion of a product ID to a telephone registration server having the electronic good provider's private key. The telephone registration server computes a message from the digital signature and private key. If the message has an expected structure (e.g., zeros in certain places) the software is authentic. Therefore, the verification method ensures software authenticity using only a portion of the product ID and thereby reducing the amount of information that needs to be transferred over the telephone to perform the registration process.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 17, 2009
    Applicant: MICROSOFT CORPORATION
    Inventor: Yacov Yacobi