Patents by Inventor Rajnish K. Chitkara

Rajnish K. Chitkara 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).

  • Database system providing SQL extensions for automated encryption and decryption of column data
    Patent number: 7743069
    Abstract: A database system providing SQL extensions for automated encryption and decryption of column data is described. In one embodiment, for example, in a database system, a method is described for providing automated encryption support for column data, the method comprises steps of: defining Structured Query Language (SQL) extensions for creating and managing column encryption keys, and for creating and managing database tables with encrypted column data; receiving an SQL statement specifying creation of a particular column encryption key; receiving an SQL statement specifying creation of a database table having particular column data encrypted with the particular column encryption key; and in response to a subsequent database operation that requires the particular column data that has been encrypted, automatically decrypting the particular column data for use by the database operation.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: June 22, 2010
    Assignee: Sybase, Inc.
    Inventors: Rajnish K. Chitkara, Barbara J. Banks, Anita R. Patel