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Author Topic: Sandy Bridge CPU's with AES Encryption in Hardware  (Read 4154 times)
PcChip
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May 23, 2011, 03:26:14 AM
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Is the AES encryption that's built into the latest Sandy Bridge chips similar enough to the SHA-256 that our miners are performing, that someone could write a miner specifically for the new intel chips?

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May 23, 2011, 03:29:17 AM
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Is the AES encryption that's built into the latest Sandy Bridge chips similar enough to the SHA-256 that our miners are performing, that someone could write a miner specifically for the new intel chips?

No, but there is a shift left double instruction that is supposed to be good for SHA.  (CPU mining is still going to be terrible.)
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May 23, 2011, 03:32:25 AM
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more likely this "AES Acceleration" is actually introduced to help 3-rd party to exploit vulnerabilities in [intentional or not. but expected anyway]flaws of implementation.
just watch on [laughable]silicon amount waste on such "acceleration" and look at full-scale CPU performance in such tasks. there is no miracles, yet in IT.
my conclusion: stay with software-based AES/SHA.
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May 23, 2011, 03:41:16 AM
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laughable silicon amount waste on such "acceleration"
my conclusion: stay with software-based AES/SHA.

uh... really?

from tomshardware (on Networked Storage Devices that do AES encryption in SOFTWARE instead of HARDWARE):

Intel’s addition AES-NI to its 32 nm Clarkdale-based Core i5 desktop CPUs, six-core Gulftown processors, and second-gen Core i5 and Core i7 chips impressively demonstrates how much dedicated acceleration hardware can increase the speed of the encryption/decryption process.
-----
Nevertheless, it must be said that the encryption performance [of these NAS devices] leaves a lot of room for improvement. The implementation of a dedicated hardware cryptography unit would affect the data transfer rates very positively. Intel’s dual-core Atom D510 offers modest performance in everyday use, but for this type of encryption task, it is simply underwhelming, in turn affecting the data transfer rates. Maybe AES-NI has value in the embedded market; hopefully Intel has something planned there.

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May 23, 2011, 03:43:46 AM
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using GPU for same purposes, for example, promise 5x or 14x speedup improvement[in Nvidia and AMD case, resepectively], compared to percentages of boost, when its runned by unverified/undisclosed microcode wrapper.
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May 23, 2011, 03:56:34 AM
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Have you been hittin' up silkroad ?

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