Sandisk Technologies Inc.

Mark Myran

Martin Lueker-Boden

Lunkai Zhang

Rasmus Madsen

A decryption engine can decrypt encrypted data read from a physical address in a memory of a data storage device. To decrypt the data, the decryption engine can use a tweak value that is generated from a logical address associated with the physical address. To reduce latency, the tweak value can be generated in parallel with the translation of the logical address to the physical address. The tweak value can be stored in a tweak buffer in the decryption engine until needed and can be indexed by a tag associated with a process in a host that is requesting the data. The tweak buffer can use static random-access memory (SRAM) or a content-addressable memory (CAM), for example. Other embodiments are provided.

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Trabuco Canyon, CA, United States of America

Mark Myran