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Message-ID: <CAMrU6JD2NhdVr0qBtZefnVVMFObqdjC-Ei+wVcr9TVztsA=BCA@mail.gmail.com>
Date: Sun, 20 Oct 2024 12:17:46 -0500
From: David Sutherland <turnkit@...il.com>
To: john-users@...ts.openwall.com
Subject: older Intel Quick Assist (QAT) performance boost?
Any thoughts on using now relatively inexpensive ($50 - $120) Intel Quick
Assist cards like the 8950, 8970 to accelerate some hashing functions?
Could that improve JTR performance?
ref:
https://www.ebay.com/sch/i.html?&_nkw=intel+quickassist
https://www.intel.com/content/www/us/en/download/765501/intel-quickassist-technology-driver-for-linux-hw-version-2-0.html
Even though this card is circa 2015 ChatGPT o1-preview gathers that in some
cases it might have some speed advantages. Realistic?
Algorithm | Supported by QAT 8950 | Advantage
> over CPU | Advantage over GPU | Notes
>
> ---------------------------------------+-----------------------+--------------------+--------------------+--------------------------------------------------------------
> AES (Advanced Encryption Standard) | Yes | High
> | Moderate | Used in file encryption (e.g., PDF, Office
> documents) that JtR can target. QAT accelerates AES operations.
> - Modes: ECB, CBC, CTR, GCM | |
> | |
> SHA-256, SHA-512 Hash Functions | Yes | High
> | Moderate | Used in SHA-crypt password hashes. QAT
> accelerates these hash computations.
> MD5 Hash Function | Yes | High
> | Moderate | Used in MD5-crypt hashes. QAT provides
> acceleration for MD5 computations.
> HMAC-SHA1, HMAC-SHA256 | Yes | High
> | Moderate | Used in PBKDF2-based password hashes. QAT
> accelerates HMAC operations.
> RSA Decryption (Large Key Sizes) | Yes | Moderate
> | Low | Relevant for cracking RSA private keys
> (less common in JtR). QAT accelerates RSA operations.
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