$md5
From Scriptwiki
Returns MD5 hash value for the specified data, where N = 0 for plain text (default), 1 for &binvar, 2 for filename.
$md5(text|&binvar|filename,[N])
Example
$md5(text string)
Returns the MD5 hash value of text string (a278c7ab35780d23f34c75dd23278b4b)
//bset -t &bvar 1 text string | echo -ag $md5(&bvar,1)
Echoes the same as the last value, this time using a binary variable.
$md5(mirc.ini,2)
Returns the MD5 hash value of the file mirc.ini.