Intel Corporation
MICROPROCESSOR PIPELINE CIRCUITRY TO SUPPORT CRYPTOGRAPHIC COMPUTING

Abstract:

In one embodiment, a processor of a cryptographic computing system includes a register to store an encryption key and address generation circuitry to obtain a pointer representing a linear address to be accessed by a read or write operation, the pointer being at least partially encrypted, obtain the key from the register and a context value, decrypt the encrypted portion of the pointer using the key and the context value as a tweak input, and generate an effective address for use in the read or write operation based on an output of the decryption.