Advanced Micro Devices Corporation

Wei Chen

Seyedmohammad SeyedzadehDelcheh

A processing system uses a residue code-based mechanism to verify data integrity while storing check bits generated using Message Authentication Codes (MACs) at memory locations that traditionally store error correcting code data. Cache data is received from a cache line. Check bits are generated from the cache data and the cache data and check bits are stored at a memory device. Subsequently, the cache data and check bits are retrieved from the memory device. A first MAC hash value is generated from the previously stored cache data and second check bits are generated from the first MAC hash value. A second MAC hash value is generated from the previously stored check bits. The second MAC hash value is compared to the second check bits to verify data integrity of the previously stored cache data. In some implementations, the previously stored check bits are additionally used as error correcting code data.

Data integrity verification system and method

A processing unit employs a residue code (RC) to perform error detection and correction for a multi-round transformation data encryption process. The processing unit generates a cipher based on a plurality of transformations. For each of the plurality of transformations, the processing unit generates a corresponding residue code of a plurality of residue codes. The processing unit performs error detection for the cipher based on the plurality of residue codes.

Growing community of inventors

Camas, WA, United States of America

Wei Chen