On 02/22/2012 02:03 PM, Frank wrote:

> Hi,
> 
> After doing some trials with hardware crypto offloading through usermode 
> interfaces (af_alg and cryptodev) to Marvell CESA accelerated ciphers and 
> hash functions with the 3.2.4 kernel's mv_cesa in Debian Wheezy on a Marvell 
> Kirkwood system, I've noticed the following kernel output when I load the 
> mv_cesa kernel module:
> 
> [490889.448060] alg: hash: Test 1 failed for mv-sha1
> [490889.452786] 00000000: c1 94 3f 2e a2 41 ce 88 d5 47 07 43 c4 a8 17 5d
> [490889.459368] 00000010: 77 e8 47 ca
> [490889.464321] alg: hash: Test 1 failed for mv-hmac-sha1
> [490889.469493] 00000000: 06 71 4d 7c cc cc b5 cf 1b d6 c7 ab d0 25 c4 21
> [490889.476068] 00000010: 66 0b 8e 70
> Using SHA1 in a ssl/tls handshake fails in tests with mv_cesa loaded, which 
> might be related to this.


It might be related. I noticed the same issue in userspace with
/dev/crypto. It can be solved by adding a 50 ms delay after the
encryption, decryption and hashing operations. (a delay less than that
didn't work).

regards,
Nikos
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