Multi-stage memory integrity method and apparatus
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United States of America Patent
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Jul 9, 2019
Grant Date -
Mar 15, 2018
app pub date -
Sep 13, 2016
filing date -
Sep 13, 2016
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Abstract
Embodiments of apparatus, method, and storage medium associated with multi-stage memory integrity for securing/protecting memory content are described herein. In some embodiments, an apparatus may include multiple stages having respective encryption engines to encrypt data in response to a write or restore operation; wherein the encryption engines are to successively encrypt the data in a plurality of encryption stages using a plurality of tweaks based on a plurality of selectors of different types {s1, s2, . . . }. In embodiments, the multiple stages may further comprise one or more decryption engines to partially, fully, or pseudo decrypt the plural encrypted data, in response to a read, move or copy operation; wherein the one or more decryption engines are to partially, fully, or pseudo decrypt the plural encrypted data in one or more decryption stages using one or more tweaks based on a subset of the selectors of different types {s1, s2, . . . }.
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