Patents by Inventor Yordan Rouskov
Yordan Rouskov 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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Patent number: 12113898Abstract: Generally discussed herein are devices, systems, and methods for binding with cryptographic key attestation. A method can include generating, by hardware of a device, a device public key and a device private key, based on the device private key, signing a first attestation resulting in a signed first attestation, the first attestation claiming the device private key originated from the hardware, based on the device public key and the signed first attestation, registering the device with a trusted authority, generating, by the hardware, a first application private key and a first application public key, and based on the device private key, signing a second attestation resulting in a signed second attestation, the second attestation claiming the first application private key originated from the hardware, and based on the first application public key and the signed second attestation, registering a first application of the device to a first server.Type: GrantFiled: July 20, 2023Date of Patent: October 8, 2024Assignee: Microsoft Technology Licensing, LLCInventors: Prabagar Ramadasse, Yordan Rouskov, Mick Healy, Gaurav Dhawan, Venkata Raghuram Pampana, Aleksandr Tokarev, Marc Shepard, Ramachandra Ravitej Vennapusa
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Publication number: 20230379152Abstract: Generally discussed herein are devices, systems, and methods for binding with cryptographic key attestation. A method can include generating, by hardware of a device, a device public key and a device private key, based on the device private key, signing a first attestation resulting in a signed first attestation, the first attestation claiming the device private key originated from the hardware, based on the device public key and the signed first attestation, registering the device with a trusted authority, generating, by the hardware, a first application private key and a first application public key, and based on the device private key, signing a second attestation resulting in a signed second attestation, the second attestation claiming the first application private key originated from the hardware, and based on the first application public key and the signed second attestation, registering a first application of the device to a first server.Type: ApplicationFiled: July 20, 2023Publication date: November 23, 2023Inventors: Prabagar Ramadasse, Yordan ROUSKOV, Mick HEALY, Gaurav DHAWAN, Venkata Raghuram PAMPANA, Aleksandr TOKAREV, Marc SHEPARD, Ramachandra Ravitej VENNAPUSA
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Patent number: 11750384Abstract: Generally discussed herein are devices, systems, and methods for binding with cryptographic key attestation. A method can include generating, by hardware of a device, a device public key and a device private key, based on the device private key, signing a first attestation resulting in a signed first attestation, the first attestation claiming the device private key originated from the hardware, based on the device public key and the signed first attestation, registering the device with a trusted authority, generating, by the hardware, a first application private key and a first application public key, and based on the device private key, signing a second attestation resulting in a signed second attestation, the second attestation claiming the first application private key originated from the hardware, and based on the first application public key and the signed second attestation, registering a first application of the device to a first server.Type: GrantFiled: May 27, 2021Date of Patent: September 5, 2023Assignee: Microsoft Technology Licensing, LLCInventors: Prabagar Ramadasse, Yordan Rouskov, Mick Healy, Gaurav Dhawan, Venkata Raghuram Pampana, Aleksandr Tokarev, Marc Shepard, Ramachandra Ravitej Vennapusa
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Publication number: 20220385467Abstract: Generally discussed herein are devices, systems, and methods for binding with cryptographic key attestation. A method can include generating, by hardware of a device, a device public key and a device private key, based on the device private key, signing a first attestation resulting in a signed first attestation, the first attestation claiming the device private key originated from the hardware, based on the device public key and the signed first attestation, registering the device with a trusted authority, generating, by the hardware, a first application private key and a first application public key, and based on the device private key, signing a second attestation resulting in a signed second attestation, the second attestation claiming the first application private key originated from the hardware, and based on the first application public key and the signed second attestation, registering a first application of the device to a first server.Type: ApplicationFiled: May 27, 2021Publication date: December 1, 2022Inventors: Prabagar Ramadasse, Yordan ROUSKOV, Mick HEALY, Guarav DHAWAN, Venkata Raghuram PAMPANA, Aleksandr TOKAREV, Marc SHEPARD, Ramachandra Ravitej VENNAPUSA
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Patent number: 10965667Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: GrantFiled: December 9, 2019Date of Patent: March 30, 2021Assignee: Microsoft Technology Licensing, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Publication number: 20200112556Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: ApplicationFiled: December 9, 2019Publication date: April 9, 2020Applicant: Microsoft Technology Licensing, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Patent number: 10574750Abstract: Network services may include data associated with one or more entities. An aggregator service may host respective application programming interfaces (APIs) of the services at a single endpoint of the network such that the entities, including associations and relationships between entities, may be federated. For example, the services may register the entities of which the data of each of the services is associated with through a declarative entity model to establish an API schema for each of the services, which may be published at the aggregator service. In response to receipt of a request for entity related data from a client, the aggregator service may employ the declarative entity model to determine which of the services are associated with the entity related data such that a query may be submitted to the services, and how to aggregate responses to the query received from the services for transmission to the client.Type: GrantFiled: September 1, 2015Date of Patent: February 25, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Yina Arenas, Dmitry Pugachev, Robert Howard, Sriram Dhanasekaran, Marek Rycharski, Vijaya Manohararaj, Daniel Kershaw, James Kleewein, Anthony Bloesch, Titus Miron, Vikrant Arora, Murli Satagopan, Jon Rosenberg, Yordan Rouskov
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Patent number: 10505926Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: GrantFiled: July 20, 2018Date of Patent: December 10, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Patent number: 10333711Abstract: A device operated by a user may store an object to which access is to be regulated, which may be achieved by encrypting the object with an encryption key and sending the key to a server having a key store. When a user of the device requests access to the object, the server may authenticate the user (e.g., according to a credential submitted by the user) and verify a trust identifier of the device (e.g., authorization to access the object through the device, and/or the integrity of the device), before sending to the device a ticket granting access to the key. The device may send the ticket to the server, receive the key from the server, decrypt the stored encrypted object, and provide the object to the user. This mechanism promotes rapid access upon request and efficient use of the server, and enables remote revocation of access.Type: GrantFiled: June 17, 2011Date of Patent: June 25, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Eric Fleischman, Tarek Kamel, Yordan Rouskov
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Patent number: 10142107Abstract: Binding a security token to a client token binder, such as a trusted platform module, is provided. A bound security token can only be used on the client on which it was obtained. A secret binding key (kbind) is established between the client and an STS. The client derives a key (kmac) from kbind, signs a security token request with kmac, and instructs the STS to bind the requested security token to kbind. The STS validates the request by deriving kmac using a client-provided nonce and kbind to MAC the message and compare the MAC values. If the request is validated, the STS generates a response comprising the requested security token, derives two keys from kbind: one to sign the response and one to encrypt the response, and sends the response to the client. Only a device comprising kbind is enabled to use the bound security token, providing increased security.Type: GrantFiled: December 31, 2015Date of Patent: November 27, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Adrian Frei, Tarek B. Kamel, Guruprasad B. Aphale, Sankara Narayanan Venkataraman, Xiaohong Su, Yordan Rouskov, Vijay G. Bharadwaj
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Publication number: 20180332026Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: ApplicationFiled: July 20, 2018Publication date: November 15, 2018Applicant: Microsoft Technology Licensing, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Patent number: 10104071Abstract: Embodiments are directed to revoking user sessions using signaling. In one scenario, an identity platform operating on a computer system receives an indication indicating that a user's login account has been compromised, where the user's login account has an associated login session and corresponding session artifact that is valid for a specified amount of time. The identity platform generates a signal indicating that the login session is no longer trusted and that the user is to be re-directed to the identity platform to re-authenticate and renew the session artifact and provides the generated signal to various relying parties including at least one relying party that is hosting the login session for the user.Type: GrantFiled: November 29, 2017Date of Patent: October 16, 2018Assignee: Microsoft Technology Licensing, LLCInventors: Ariel Gordon, Samuel Devasahayam, Lu Zhao, Yordan Rouskov, Parmeshwar Miguel Sequeira Arewar, Venkatesh Gopalakrishnan, Sarat Chandra Subramaniam, Titus Constantin Miron
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Patent number: 10033731Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: GrantFiled: July 31, 2017Date of Patent: July 24, 2018Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Publication number: 20180139200Abstract: Embodiments are directed to revoking user sessions using signaling. In one scenario, an identity platform operating on a computer system receives an indication indicating that a user's login account has been compromised, where the user's login account has an associated login session and corresponding session artifact that is valid for a specified amount of time. The identity platform generates a signal indicating that the login session is no longer trusted and that the user is to be re-directed to the identity platform to re-authenticate and renew the session artifact and provides the generated signal to various relying parties including at least one relying party that is hosting the login session for the user.Type: ApplicationFiled: November 29, 2017Publication date: May 17, 2018Inventors: Ariel Gordon, Samuel Devasahayam, Lu Zhao, Yordan Rouskov, Parmeshwar Miguel Sequeira Arewar, Venkatesh Gopalakrishnan, Sarat Chandra Subramaniam, Titus Constantin Miron
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Patent number: 9935936Abstract: A federated realm discovery system within a federation determines a “home” realm associated with a portion of the user's credentials before the user's secret information (such as a password) is passed to a non-home realm. A login user interface accepts a user identifier and, based on the user identifier, can use various methods to identify an account authority service within the federation that can authenticate the user. In one method, a realm list of the user device can be used to direct the login to the appropriate home realm of the user. In another method, an account authority service in a non-home realm can look up the user's home realm and provide realm information directing the user device to login at the home realm.Type: GrantFiled: June 27, 2017Date of Patent: April 3, 2018Assignee: Microsoft Technology Licensing, LLCInventors: Wei-Qiang Guo, Lynn Ayres, Rui Chen, Sarah Faulkner, Yordan Rouskov
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Patent number: 9843577Abstract: Embodiments are directed to revoking user sessions using signaling. In one scenario, an identity platform operating on a computer system receives an indication indicating that a user's login account has been compromised, where the user's login account has an associated login session and corresponding session artifact that is valid for a specified amount of time. The identity platform generates a signal indicating that the login session is no longer trusted and that the user is to be re-directed to the identity platform to re-authenticate and renew the session artifact and provides the generated signal to various relying parties including at least one relying party that is hosting the login session for the user.Type: GrantFiled: November 30, 2016Date of Patent: December 12, 2017Assignee: Microsoft Technology Licensing, LLCInventors: Ariel Gordon, Samuel Devasahayam, Lu Zhao, Yordan Rouskov, Parmeshwar Miguel Sequeira Arewar, Venkatesh Gopalakrishnan, Sarat Chandra Subramaniam, Titus Constantin Miron
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Publication number: 20170331811Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: ApplicationFiled: July 31, 2017Publication date: November 16, 2017Applicant: Microsoft Technology Licensing, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Publication number: 20170295166Abstract: A federated realm discovery system within a federation determines a “home” realm associated with a portion of the user's credentials before the user's secret information (such as a password) is passed to a non-home realm. A login user interface accepts a user identifier and, based on the user identifier, can use various methods to identify an account authority service within the federation that can authenticate the user. In one method, a realm list of the user device can be used to direct the login to the appropriate home realm of the user. In another method, an account authority service in a non-home realm can look up the user's home realm and provide realm information directing the user device to login at the home realm.Type: ApplicationFiled: June 27, 2017Publication date: October 12, 2017Inventors: Wei-Qiang Guo, Lynn Ayres, Rui Chen, Sarah Faulkner, Yordan Rouskov
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Patent number: 9749313Abstract: In one embodiment, a user authentication server may use geo-location tracking to determine whether to present an enhanced identity challenge. A communication interface 180 may receive a user login attempt by a user and a current location of the user login attempt. A data storage 150 may store a user location profile of the user. A processor 120 may execute a comparison of the current location to the user location profile. The communication interface 180 may present the user with an enhanced identity challenge before allowing user access based on the comparison.Type: GrantFiled: September 30, 2015Date of Patent: August 29, 2017Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne
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Patent number: 9735964Abstract: A federated realm discovery system within a federation determines a “home” realm associated with a portion of the user's credentials before the user's secret information (such as a password) is passed to a non-home realm. A login user interface accepts a user identifier and, based on the user identifier, can use various methods to identify an account authority service within the federation that can authenticate the user. In one method, a realm list of the user device can be used to direct the login to the appropriate home realm of the user. In another method, an account authority service in a non-home realm can look up the user's home realm and provide realm information directing the user device to login at the home realm.Type: GrantFiled: June 19, 2008Date of Patent: August 15, 2017Assignee: Microsoft Technology Licensing, LLCInventors: Wei-Qiang Guo, Lynn Ayres, Rui Chen, Sarah Faulkner, Yordan Rouskov