Patents by Inventor Michael S. Leong

Michael S. Leong 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).

  • System for structured encryption of payment card track data
    Patent number: 9811831
    Abstract: A system may include a point-of-sale system that gathers payment card track data from a payment card and a payment card gateway that processes the track data to authorize purchase transactions. The point-of-sale system may remove sensitive data such as a portion of a primary account number from the track data and may compress the removed data. The compressed version of the data may be appended to a discretionary field in the track data. The discretionary field may be encrypted following insertion of the compressed data. Track data that has been modified in this way may be conveyed to the payment gateway for processing.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: November 7, 2017
    Assignee: ENTIT SOFTWARE LLC
    Inventors: Terence Spies, Matthew J. Pauker, Jacob Green, Michael S. Leong, Richard T. Minner
  • SYSTEM FOR STRUCTURED ENCRYPTION OF PAYMENT CARD TRACK DATA
    Publication number: 20140172597
    Abstract: A system may include a point-of-sale system that gathers payment card track data from a payment card and a payment card gateway that processes the track data to authorize purchase transactions. The point-of-sale system may remove sensitive data such as a portion of a primary account number from the track data and may compress the removed data. The compressed version of the data may be appended to a discretionary field in the track data. The discretionary field may be encrypted following insertion of the compressed data. Track data that has been modified in this way may be conveyed to the payment gateway for processing.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicant: Voltage Security, Inc.
    Inventors: Terence Spies, Matthew J. Pauker, Jacob Green, Michael S. Leong, Richard T. Minner
  • System for structured encryption of payment card track data
    Patent number: 8666823
    Abstract: A system may include a point-of-sale system that gathers payment card track data from a payment card and a payment card gateway that processes the track data to authorize purchase transactions. The point-of-sale system may remove sensitive data such as a portion of a primary account number from the track data and may compress the removed data. The compressed version of the data may be appended to a discretionary field in the track data. The discretionary field may be encrypted following insertion of the compressed data. Track data that has been modified in this way may be conveyed to the payment gateway for processing.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: March 4, 2014
    Assignee: Voltage Security, Inc.
    Inventors: Terence Spies, Matthew J. Pauker, Jacob Green, Michael S. Leong, Richard T. Minner
  • Format-translating encryption systems
    Patent number: 8600048
    Abstract: Format-translating encryption (FTE) cryptographic operations may be implemented using a cryptographic system that translates plaintext strings to ciphertext strings of a different format and that translates ciphertext strings to plaintext strings of a different format. Plaintext strings may have a format defined by a first regular expression. Corresponding ciphertext strings may have a format defined by a second regular expression that is different than the first regular expression. During encryption operations, a format-translating encryption algorithm may employ a format-preserving encryption (FPE) encryption algorithm. During decryption operations, a format-translating encryption algorithm may employ an FPE decryption algorithm.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: December 3, 2013
    Assignee: Voltage Security, Inc.
    Inventors: Chad B. Hansen, Jacob Green, Michael S. Leong
  • SYSTEM FOR STRUCTURED ENCRYPTION OF PAYMENT CARD TRACK DATA
    Publication number: 20110246315
    Abstract: A system may include a point-of-sale system that gathers payment card track data from a payment card and a payment card gateway that processes the track data to authorize purchase transactions. The point-of-sale system may remove sensitive data such as a portion of a primary account number from the track data and may compress the removed data. The compressed version of the data may be appended to a discretionary field in the track data. The discretionary field may be encrypted following insertion of the compressed data. Track data that has been modified in this way may be conveyed to the payment gateway for processing.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 6, 2011
    Inventors: Terence Spies, Matthew J. Pauker, Jacob Green, Michael S. Leong, Richard T. Minner