Strong Encryption

Andy Polyakov appro at fy.chalmers.se
Sat Jul 10 03:06:05 EST 2004


>>Heh, since when was SHA-1 slower than ciphering?
> 
> type      16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
> sha1      4121.41k    12750.30k    30907.53k    47681.66k    56379.43k
> rc4      79799.42k    87071.85k    94870.19k    95988.28k    96742.29k

If these are numbers for Pentium 4 CPU, then it should be noted that 
OpenSSL SHA-1 assembler implementation was performing suboptimally on 
P4. This was fixed in 0.9.7d. I for example get:

sha1        9489.58k    32274.82k    91089.08k   165553.74k   215638.02k
rc4        77315.06k    86091.19k    87813.80k    89298.28k    88544.83k

A.




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