For those who haven't noticed, Kraken code has found a new home in git,
and the latest version can be gotten by:
git clone git://git.srlabs.de/kraken.git
The latest version can handle multiple requests simultaneously, and
these are identified by a unique job number.
I have written some sample glue code in python that shows how it is
possible to interface with Kraken over the server socket. The relevant
snippets look like this:
Simple function to read from socket:
def ReadLine(s):
r = ""
c = s.recv(1)
while c!='\n':
r = r + c
c = s.recv(1)
return r
And the code for processing a batch of known plaintext looks something
like this
#Open server connection
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("127.0.0.1", 9100))
found = False
for crk in cracks:
pos = crk.find("crack")
skip = False
if pos>0:
cmd = crk[pos:]
s.send(cmd+"\n")
while True:
r = ReadLine(s)
print r
if (len(r) > 5) and r[:6]=="crack ":
break
if (len(r) > 5) and r[:6]=="Found ":
find = r.split(" ")
key = find[1]
keypos = find[3]
#Another frame will have to be found from this group
framenum1 = ???
framenum2 = ???
burst2 = ???
pipe = os.popen("./find_kc %s %s %s %s %s"%
(key,keypos,framenum1,framenum2,burst2))
result = pipe.read();
print result
rv = result.split("\n")
for r in rv:
if r.find("MATCH")>0:
print r
key = r.split(" ")[1:9]
keystring = string.join(key," ")
# This is your key
print keystring
found = True
break
if found:
break
#close connection
s.close()
I hope this can prove useful.
Frank
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