Ramzan; Zulfikar Amin

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ramzan; Zulfikar Amin.The latest application filed is for "method and apparatus for secure and small credits for verifiable service provider metering".

Company Profile

0.29.36

Ramzan; Zulfikar Amin - San Mateo CA
Ramzan; Zulfikar Amin - Malden MA
Ramzan; Zulfikar Amin - Boston MA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (PAKE) Grant 9,071,598 - Ramzan , et al. June 30, 2	2015-06-30
Method and apparatus for efficient certificate revocation Grant 8,321,664 - Gentry , et al. November 27, 2	2012-11-27
Method and apparatus for authentication of data streams with adaptively controlled losses Grant 8,256,015 - Gentry , et al. August 28, 2	2012-08-28
Revocation of cryptographic digital certificates Grant 8,209,531 - Gentry , et al. June 26, 2	2012-06-26
Revocation of cryptographic digital certificates Grant 8,156,327 - Gentry , et al. April 10, 2	2012-04-10
Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (PAKE) Grant 8,132,006 - Ramzan , et al. March 6, 2	2012-03-06
Method and apparatus for communication efficient private information retrieval and oblivious transfer Grant 8,065,332 - Ramzan , et al. November 22, 2	2011-11-22
Method And Apparatus For Secure And Small Credits For Verifiable Service Provider Metering App 20110238542 - Gentry; Craig B. ; et al.	2011-09-29
Revocation of cryptographic digital certificates Grant 8,024,562 - Gentry , et al. September 20, 2	2011-09-20
Revocation of cryptographic digital certificates Grant 8,006,086 - Gentry , et al. August 23, 2	2011-08-23
Method and apparatus for communication efficient private information retrieval and oblivious transfer Grant 7,987,201 - Ramzan , et al. July 26, 2	2011-07-26
Method and apparatus for communication efficient private information retrieval and oblivious transfer Grant 7,941,422 - Ramzan , et al. May 10, 2	2011-05-10
Method and apparatus for efficient certificate revocation Grant 7,840,994 - Gentry , et al. November 23, 2	2010-11-23
Revocation Of Cryptographic Digital Certificates App 20100287370 - Gentry; Craig B. ; et al.	2010-11-11
Changing states of communication links in computer networks in an authenticated manner Grant 7,831,998 - Mackenzie , et al. November 9, 2	2010-11-09
Exclusive set system constructions including, but not limited to, applications to broadcast encryption and certificate revocation Grant 7,818,570 - Gentry , et al. October 19, 2	2010-10-19
Cryptographic authentication, and/or establishment of shared cryptographic keys, using a signing key encrypted with a non-one-time-pad encryption, including (but not limited to) techniques with improved security against malleability attacks Grant 7,814,320 - Mackenzie , et al. October 12, 2	2010-10-12
Revocation of cryptographic digital certificates Grant 7,814,314 - Gentry , et al. October 12, 2	2010-10-12
Cryptographic Authentication And/or Establishment Of Shared Cryptographic Keys, Including, But Not Limited To, Password Authenticated Key Exchange (pake) App 20100257362 - Ramzan; Zulfikar Amin ; et al.	2010-10-07
Method and apparatus for secure and small credits for verifiable service provider metering Grant 7,783,579 - Gentry , et al. August 24, 2	2010-08-24
Use Of Modular Roots To Perform Authentication Including, But Not Limited To, Authentication Of Validity Of Digital Certificates App 20100174904 - Ramzan; Zulfikar Amin ; et al.	2010-07-08
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates Grant 7,747,857 - Ramzan , et al. June 29, 2	2010-06-29
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates Grant 7,743,252 - Ramzan , et al. June 22, 2	2010-06-22
Use Of Modular Roots To Perform Authentication Including, But Not Limited To, Authentication Of Validity Of Digital Certificates App 20100153714 - Ramzan; Zulfikar Amin ; et al.	2010-06-17
Broadcast encryption using RSA Grant 7,721,089 - Gentry , et al. May 18, 2	2010-05-18
Digital signatures including identity-based aggregate signatures Grant 7,664,957 - Gentry , et al. February 16, 2	2010-02-16
Method And Apparatus For Authentication Of Data Streams With Adaptively Controlled Losses App 20100005309 - Gentry; Craig B. ; et al.	2010-01-07
Method And Apparatus For Authenication Of Data Streams With Adaptively Controlled Losses App 20100005310 - Gentry; Craig B. ; et al.	2010-01-07
Method And Apparatus For Efficient Certificate Revocation App 20100005292 - Gentry; Craig B. ; et al.	2010-01-07
Revocation Of Cryptographic Digital Certificates App 20090287924 - Gentry; Craig B. ; et al.	2009-11-19
Method and apparatus for secure and small credits for verifiable service provider metering Grant 7,620,606 - Gentry , et al. November 17, 2	2009-11-17
Method and apparatus for communication efficient private information retrieval and oblivious transfer Grant 7,620,625 - Ramzan , et al. November 17, 2	2009-11-17
Revocation Of Cryptographic Digital Certificates App 20090265548 - Gentry; Craig B. ; et al.	2009-10-22
Revocation Of Cryptographic Digital Certificates App 20090265547 - Gentry; Craig B. ; et al.	2009-10-22
Revocation Of Cryptographic Digital Certificates App 20090259843 - Gentry; Craig B. ; et al.	2009-10-15
Method And Apparatus For Communication Efficient Private Information Retrieval And Oblivious Transfer App 20090190751 - Ramzan; Zulfikar Amin ; et al.	2009-07-30
Method And Apparatus For Communication Efficient Private Information Retrieval And Oblivious Transfer App 20090193000 - Ramzan; Zulfikar Amin ; et al.	2009-07-30
Method And Apparatus For Communication Efficient Private Information Retrieval And Oblivious Transfer App 20090193033 - Ramzan; Zulfikar Amin ; et al.	2009-07-30
Method And Apparatus For Communication Efficient Private Information Retrieval And Oblivious Transfer App 20090190752 - Ramzan; Zulfikar Amin ; et al.	2009-07-30
Method And Apparatus For Secure And Small Credits For Verifiable Service Provider Metering App 20090193260 - Gentry; Craig B. ; et al.	2009-07-30
Method And Apparatus For Secure And Small Credits For Verifiable Service Provider Metering App 20090157735 - Gentry; Craig B. ; et al.	2009-06-18
Method And Apparatus For Secure And Small Credits For Verifiable Service Provider Metering App 20090158413 - Gentry; Craig B. ; et al.	2009-06-18
Generation of set coverings with free riders, and generation of ordered sets of meeting points, in systems which include, but are not limited to, systems for broadcast encryption and systems for certificate revocation Grant 7,523,304 - Gentry , et al. April 21, 2	2009-04-21
Multi-certificate revocation using encrypted proof data for proving certificate's validity or invalidity Grant 7,315,941 - Ramzan , et al. January 1, 2	2008-01-01
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates Grant 7,266,692 - Ramzan , et al. September 4, 2	2007-09-04
Exclusive Set System Constructions Including, But Not Limited To, Applications To Broadcast Encryption And Certificate Revocation App 20070180003 - Gentry; Craig B. ; et al.	2007-08-02
Generation Of Set Coverings With Free Riders, And Generation Of Ordered Sets Of Meeting Points, In Systems Which Include, But Are Not Limited To, Systems For Broadcast Encryption And Systems For Certificate Revocation App 20070168659 - Gentry; Craig B. ; et al.	2007-07-19
Changing States Of Communication Links In Computer Networks In An Authenticated Manner App 20070169177 - MacKenzie; Philip ; et al.	2007-07-19
Constructions of variable input length cryptographic primitives for high efficiency and high security Grant 7,221,756 - Patel , et al. May 22, 2	2007-05-22
Multi-certificate revocation using encrypted proof data for proving certificate's validity or invalidity App 20070074036 - Ramzan; Zulfikar Amin ; et al.	2007-03-29
Cryptographic authentication, and/or establishment of shared cryptographic keys, using a signing key encrypted with a non-one-time-pad encryption, including (but not limited to) techniques with improved security against malleability attacks App 20070067629 - Mackenzie; Philip ; et al.	2007-03-22
Efficient universal hashing method Grant 7,174,013 - Patel , et al. February 6, 2	2007-02-06
Broadcast encryption using rsa App 20070016769 - Gentry; Craig B. ; et al.	2007-01-18
Method and apparatus for secure and small credits for verifiable service provider metering App 20070005499 - Gentry; CraigB ; et al.	2007-01-04
Cryptographic authentication and/or establishment of shared cryptographic keys, including, but not limited to, password authenticated key exchange (PAKE) App 20060291661 - Ramzan; Zulfikar Amin ; et al.	2006-12-28
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates App 20060248334 - Ramzan; Zulfikar Amin ; et al.	2006-11-02
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates App 20060242699 - Ramzan; Zulfikar Amin ; et al.	2006-10-26
Method and apparatus for authentication of data streams with adaptively controlled losses App 20060136728 - Gentry; Craig B. ; et al.	2006-06-22
Use of modular roots to perform authentication including, but not limited to, authentication of validity of digital certificates App 20060137006 - Ramzan; Zulfikar Amin ; et al.	2006-06-22
Method and apparatus for efficient certificate revocation App 20060129803 - Gentry; Craig B. ; et al.	2006-06-15
Revocation of cryptographic digital certificates App 20060059333 - Gentry; Craig B. ; et al.	2006-03-16
Method and apparatus for communication efficient private information retrieval and oblivious transfer App 20050259817 - Ramzan, Zulfikar Amin ; et al.	2005-11-24
Digital signatures including identity-based aggregate signatures App 20050262353 - Gentry, Craig B. ; et al.	2005-11-24
Constructions of variable input length cryptographic primitives for high efficiency and high security App 20030191950 - Patel, Sarvar ; et al.	2003-10-09

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