Patents by Inventor Prabu Raju
Prabu Raju 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: 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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Patent number: 10721080Abstract: The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.Type: GrantFiled: March 13, 2019Date of Patent: July 21, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Christopher Edward Fenner, Peter David Waxman, Gabriel Fortunato Stocco, Kam Kouladjie, Cristian Stefan Salvan, Prabu Raju, Himanshu Soni, Gridhar Viswanathan
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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: 10574459Abstract: A facility for enrolling a software implementer in a code signing. In one example facility, the facility receives information identifying the implementer, and credentials authenticating the implementer. The facility generates secret state for the implementer. Based on at least one or both of (1) at least a portion of the received credentials and (2) at least a portion of the generated secret state, the facility generates for the implementer a key pair comprising a private key and a public key, and persistently stores the secret state.Type: GrantFiled: September 30, 2015Date of Patent: February 25, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Prabu Raju, Fengfen Liu, Christopher Leonard Walstad, Levi P. Broderick, Himanshu Soni, Reed Molbak, Klaudia Leja
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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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Publication number: 20190280883Abstract: The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.Type: ApplicationFiled: March 13, 2019Publication date: September 12, 2019Applicant: Microsoft Technology Licensing, LLCInventors: Christopher Edward Fenner, Peter David Waxman, Gabriel Fortunato Stocco, Kam Kouladjie, Cristian Stefan Salvan, Prabu Raju, Himanshu Soni, Giridhar Viswanathan
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Patent number: 10277407Abstract: The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.Type: GrantFiled: August 26, 2016Date of Patent: April 30, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Christopher Edward Fenner, Peter David Waxman, Gabriel Fortunato Stocco, Kam Kouladjie, Cristian Stefan Salvan, Prabu Raju, Himanshu Soni, Giridhar Viswanathan
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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: 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: 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: 20170302459Abstract: The present invention provides for streamlined issuance of certificates and other tokens that are contingent on key attestation of keys from a trusted platform module within a computing platform. Various methods are described for wrapping the requested token in a secret, such as an AES key, that is encrypted to a TPM based key in a key challenge. If the requesting platform fails the key challenge, the encrypted certificate or token cannot be decrypted. If requesting platform passes the challenge, the encrypted certificate or token can be decrypted using the AES key recovered from the key challenge.Type: ApplicationFiled: August 26, 2016Publication date: October 19, 2017Applicant: Microsoft Technology Licensing, LLCInventors: Christopher Edward Fenner, Peter David Waxman, Gabriel Fortunato Stocco, Kam Kouladjie, Cristian Stefan Salvan, Prabu Raju, Himanshu Soni, Giridhar Viswanathan
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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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Publication number: 20170093575Abstract: A facility for enrolling a software implementer in a code signing. In one example facility, the facility receives information identifying the implementer, and credentials authenticating the implementer. The facility generates secret state for the implementer. Based on at least one or both of (1) at least a portion of the received credentials and (2) at least a portion of the generated secret state, the facility generates for the implementer a key pair comprising a private key and a public key, and persistently stores the secret state.Type: ApplicationFiled: September 30, 2015Publication date: March 30, 2017Inventors: Prabu Raju, Fengfen Liu, Christopher Leonard Walstad, Levi P. Broderick, Himanshu Soni, Reed Molbak, Klaudia Leja
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Publication number: 20160021095Abstract: 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: September 30, 2015Publication date: January 21, 2016Applicant: 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: 9177125Abstract: 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 6, 2011Date of Patent: November 3, 2015Assignee: 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: 8892896Abstract: Techniques for capability and behavior signatures are described. In one or more embodiments, various data describing the capabilities and behaviors of a client is collected. The collected data is analyzed to generate a signature that is indicative of whether the client is operated by a human or a non-human. Selective access to resources is provided to the client based at least in part on the signature that is generated.Type: GrantFiled: January 8, 2010Date of Patent: November 18, 2014Assignee: Microsoft CorporationInventors: Ryan D. Parsell, Prabu Raju
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Publication number: 20140101739Abstract: In one embodiment, a human interactive proof portal 140 may control access to an online data service 122. A communication interface 260 establishing a human interactive proof session 600 with a user device 110 accessing an online data service 122. The communication interface 260 may iteratively send an audio proof challenge set having multiple audio proof challenges each asking a semantic query to the user device 110 for presentation to a user. A processor 220 may provide access to the online data service 122 based in part on at least one proof response having a semantic reply indicating a human user.Type: ApplicationFiled: October 9, 2012Publication date: April 10, 2014Applicant: Microsoft CorporationInventors: Weisheng Li, Prabu Raju
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Patent number: 8695092Abstract: Various embodiments described above are directed to identifying abuse-hosting services at their source, rather than using such intermediaries as URLs and associated domains. In one or more embodiments, threats can be blocked by using the Internet protocol (IP) address of an identified attacker that is hosting content associated with abuse.Type: GrantFiled: December 6, 2010Date of Patent: April 8, 2014Assignee: Microsoft CorporationInventors: Manu Manianchira, Prabu Raju
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Publication number: 20130347067Abstract: In one embodiment, a human interactive proof portal 140 may control access to an online data service 122. A communication interface 280 may establish a human interactive proof session 600 with a client user 110 by presenting a proof challenge set having multiple proof challenges. A clock 290 may record a challenge response time for each proof challenge. A processor 220 may provide access to an online data service 122 based on the human interactive proof session.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Applicant: Microsoft CorporationInventors: Weisheng Li, Prabu Raju, Manu Manianchira, Cristian Salvan, Kris Iverson
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Publication number: 20120304260Abstract: 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 6, 2011Publication date: November 29, 2012Applicant: Microsoft CorporationInventors: David Steeves, Luke Abrams, Hersh Dangayach, Eric Fleischman, Prabu Raju, Krishna Vitaldevara, Niyantha Shekar, Payoj Baral, Meenakshi Ramaswamy, Winfred Wong, Yordan Rouskov, Ramesh Manne