Jason B Monroe

US Patent:

8234504, Jul 31, 2012

Filed:

Apr 15, 2003

Appl. No.:

10/414575

Inventors:

Francis Cheung - Del Mar CA, US
Jason Monroe - Ladera Ranch CA, US
Kevin Patariu - San Diego CA, US
Iue-Shuenn Chen - San Diego CA, US
Cynthia Dang - Cerritos CA, US
Mark Taylor Core - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06F 21/00

US Classification:

713189

Abstract:

Certain embodiments of the invention provide a method and system for memory to bus interface data encryption and decryption. A method for memory to bus interface data encryption and decryption may include encrypting data by a encryption/decryption engine or processor and transferring the encrypted data across a first bus interface to a data processing and/or storage device coupled to the first bus interface. The encryption engine may receive encrypted data from a device coupled to the first bus interface and decrypt the received encrypted data. In this regard, unencrypted data never traverses across the first bus interface, and is thereby not accessible to devices coupled to the first bus interface. An encryption function and a decryption function associated with the encryption/decryption engine may be integrated within a bus adapter, for example, an IDE bus adapter.

US Patent:

20040250097, Dec 9, 2004

Filed:

Apr 15, 2003

Appl. No.:

10/414844

Inventors:

Francis Cheung - Del Mar CA, US
Jason Monroe - Ladera Ranch CA, US
Jay Wa Li - Milpitas CA, US
Kevin Patariu - San Diego CA, US
Iue-Shuenn Chen - San Diego CA, US

International Classification:

G06F012/14

US Classification:

713/193000

Abstract:

An aspect of the of the invention may include the transfer of a block of data from a first memory location to a second memory location in a DRAM. During the transfer of the block of data from the first memory location, if an encryption mode is selected, the data may be buffered, encrypted, and then stored in the second memory location. If a decryption mode is selected, the transferred data may be buffered, decrypted and then stored in the second memory location. If a bypass mode is selected, the data may be buffered and then stored in the second memory location. In this regard, the encryption/decryption operations may be bypassed.