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+#!/usr/bin/python
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+
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+"""generate word compound passwords
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+
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+usage: pwgen [-c] [len default=20]
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+ -c use conjunction
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+"""
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+import random, sys
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+
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+target = 20 # default pw len
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+use_conjunction = False
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+
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+n = 1
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+if len(sys.argv)>1 and sys.argv[1]=="-c":
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+ use_conjunction = True
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+ n = 2
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+if len(sys.argv)>n:
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+ target_arg = sys.argv[n] # if a len is spec'd on the cmd line
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+ try:
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+ target_arg = int(target_arg)
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+ except:
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+ print "sorry, you need to give me a number"
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+ sys.exit()
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+ if target_arg<12 or target_arg>40:
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+ print "sorry, can't do that length"
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+ sys.exit()
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+ target = target_arg
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+
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+f = open("/usr/share/dict/words")
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+d = f.readlines()
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+f.close()
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+
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+num = len(d)
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+
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+w=['','','']
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+for i in range(3):
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+ w[i] = d[random.randint(0,num-1)][:-1] # toss out trailing \n
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+ while len(w[i]) > 10:
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+ w[i] = d[random.randint(0,num-1)][:-1] # toss out long words
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+
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+whole = len(w[0])+len(w[1])
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+
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+punc = " !@#$%^&*()-_=+[{]}\|;:/?.>,<`~"
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+this_punc = punc[int(random.random() * len(punc))]
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+
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+conjunctions = [" and ", " and a ", " and the "," or ", " or the ", " or a ",
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+ " with a ", " with ", " with the ", " by a ", " by the ",
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+ " on a ", " on the "," on ", " in a ", " in the ", " in ",
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+ " for ", " for a ", " for the "]
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+
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+if use_conjunction == False:
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+ if whole >= target-6: # if 2 words is enough
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+ r = target-whole
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+ pw = w[0] + this_punc*r + w[1]
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+ else: # otherwise use 3
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+ whole = whole + len(w[2])
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+ r = target-whole
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+ pw = w[0] + this_punc*int(r/2) + w[1] + this_punc*int(r/2) + w[2]
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+else:
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+ pw = w[0] + conjunctions[random.randint(0,len(conjunctions)-1)] + w[1]
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+
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+print "pass phrase: "+pw
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+
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