Re: mv_cesa hash functions
From: Nikos Mavrogiannopoulos <hidden>
Date: 2012-02-22 20:05:09
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