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:
Jun. 18, 2013
Filed:
Apr. 16, 2003
Kevin Patariu, San Diego, CA (US);
Iue-shuenn Chen, San Diego, CA (US);
Jay Kwok WA LI, Milpitas, CA (US);
Cynthia Dang, Cerritos, CA (US);
Mark Taylor Core, Irvine, CA (US);
Kevin Patariu, San Diego, CA (US);
Iue-Shuenn Chen, San Diego, CA (US);
Jay Kwok Wa Li, Milpitas, CA (US);
Cynthia Dang, Cerritos, CA (US);
Mark Taylor Core, Irvine, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
Secure access and processing of an encryption/decryption key may include generating one or more keys within a key controller block of a chip. The generated keys may be transferred from the key controller block of the chip to an on-chip bus interface block via a secure serial link. The transferred keys may be stored in registers which may be accessible by only the key controller block of the chip. In this regard, the generated keys may be written to one or more of the key registers only by the key controller block. Furthermore, a written key may be read from a key register only by the key controller block. During the transfer of a generated key, a data valid signal may be used to indicate valid keys in a data signal used to transfer the keys via the secure serial link.