The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2010
Filed:
Oct. 31, 2005
James Edward Nave, Denton, TX (US);
James Edward Nave, Denton, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method for protecting secret keys, such as HDCP device key sets, during the manufacturing process is disclosed. In particular, the present invention comprises a method for securely sending and receiving data, such as HDCP device key sets, for use in a cryptosystem. In operation, a first party, referred to as a sender () is to send original data () to a second party, referred to as a recipient (). To facilitate the secure transmission, the recipient () randomly generates () a session key () and encrypts it with its private key-encryption key (). The recipient then securely sends both the encrypted and unencrypted session keys to the sender. The sender () then encrypts the original data () using the unencrypted session key () and includes the encrypted data () along with the encrypted session key () to the recipient (). The recipient () then decrypts the encrypted session key () using the private key-encryption key () and then decrypts the original data ().