The limited literature for the newer VIA QuadCore E-Series embedded platform
says that it now supports "Secure Hash Algorithm: SHA-1, SHA-256, SHA-384,
SHA-512" but I'm not seeing any acceleration for SHA512 in the kernel modules
or nettle / gnutls. I would appreciate some pointers on what I need to do to
access that SHA512 acceleration in nettle.
Here's my setup:Via Artigo A1250 Ubuntu 12.04 x86_64Gnutls - built from git
Nettle - built from 2.6 source Kernel modules: padlock_aes, padlock_sha
Here's my dmesg output for the loaded modules:[ 2.345061] padlock_aes: Using
VIA PadLock ACE for AES algorithm.[ 2.364105] padlock_sha: Using VIA PadLock
ACE for SHA1/SHA256 algorithms.
gnutls Benchmark Soft Ciphers:Checking SHA1 (16kb payload)... Processed 464.73
MB in 5.00 secs: 92.95 MB/secChecking SHA256 (16kb payload)... Processed
180.04 MB in 5.00 secs: 36.01 MB/secChecking SHA512 (16kb payload)...
Processed 267.39 MB in 5.00 secs: 53.48 MB/sec
gnutls Benchmark Ciphers:Checking SHA1 (16kb payload)... Processed 1.51 GB in
5.00 secs: 0.30 GB/secChecking SHA256 (16kb payload)... Processed 1.30 GB in
5.00 secs: 0.26 GB/secChecking SHA512 (16kb payload)... Processed 267.45 MB in
5.00 secs: 53.49 MB/sec
The SHA256 numbers are great but I really need SHA512 for my application.
Thank you.
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