Hashing Performance

which hashing algo to use?

tested on atehena

1. list off all alsos that open ssl has.

md5
mdc2  
rmd160
sha   
sha1  
sha224
sha256
sha384
sha512

2. create a shell script that times the hashing of a file 100 times for each method, then shuffle that file

sample:

/usr/bin/time openssl dgst -md5 ../smartOS-latest-USB.img.bz2 2>out-md5-15
/usr/bin/time openssl dgst -sha ../smartOS-latest-USB.img.bz2 2>out-sha-16
/usr/bin/time openssl dgst -sha384 ../smartOS-latest-USB.img.bz2 2>out-sha384-17
/usr/bin/time openssl dgst -sha224 ../smartOS-latest-USB.img.bz2 2>out-sha224-18
/usr/bin/time openssl dgst -mdc2 ../smartOS-latest-USB.img.bz2 2>out-mdc2-19
/usr/bin/time openssl dgst -sha256 ../smartOS-latest-USB.img.bz2 2>out-sha256-20
/usr/bin/time openssl dgst -sha256 ../smartOS-latest-USB.img.bz2 2>out-sha256-21
/usr/bin/time openssl dgst -sha ../smartOS-latest-USB.img.bz2 2>out-sha-23
/usr/bin/time openssl dgst -sha384 ../smartOS-latest-USB.img.bz2 2>out-sha384-24
/usr/bin/time openssl dgst -md5 ../smartOS-latest-USB.img.bz2 2>out-md5-25
/usr/bin/time openssl dgst -sha512 ../smartOS-latest-USB.img.bz2 2>out-sha512-26
/usr/bin/time openssl dgst -sha224 ../smartOS-latest-USB.img.bz2 2>out-sha224-27
/usr/bin/time openssl dgst -mdc2 ../smartOS-latest-USB.img.bz2 2>out-mdc2-28
/usr/bin/time openssl dgst -sha1 ../smartOS-latest-USB.img.bz2 2>out-sha1-29

3. for each method calculate the mean and stddev