def platformCheck(checks=1000):
from collections import Counter
print('Checking for good entropy')
randList = []
count = 0
for zbit in xrange(checks):
out.prnt('\b\b\b\b\b\b{0:4d}'.format(1000-count))
count += 1
randList.append(clockrnd())
out.prnt('\b\b\b\b\b\b\b\b\b')
duplicateCheck = Counter(randList).most_common(1)
x, count = duplicateCheck[0]
if count != 1:
print('FAIL: time-based entropy is not always unique!')
return False
print('...pass')
return True
def secure_passphrase(msg):
progress_step = 0
pretty_progress = ['\b@', '\b#', '\b*', '\b!']
keypress = get._Getch()
single_key = passw = ''
out.prnt(msg + ' : ')
while single_key != "\n" and single_key != chr(13):
while True:
single_key = keypress()
if single_key != '':
break
if single_key != "\n" and single_key != chr(13):
passw += single_key
out.prnt(pretty_progress[progress_step % 4])
progress_step += 1
print('\b')
return passw
def keyboardEntropy(keynum=64):
"""
512 bit random number from keyboard and keypress timer
"""
keypress = get._Getch()
typed = kr = 'Press some keys to generate a secure address...'
hashes = rand.clockrnd()
print(kr)
for step in range(keynum, 0, -1):
for cnt in xrange(10000000): # only loops on OSX
hashes ^= rand.clockrnd()
kr = keypress()
get.flushKeybuffer(keypress)
if kr != '':
break
typed += kr
hashes ^= rand.clockrnd()
out.prnt('\b\b\b\b\b\b{0:4d}\b\b\b\b\b'.format(step-1))
get.flushKeybuffer(keypress)
out.prnt('\b\b\b\b\b\b{0:4s}\b\b\b\b\b\n'.format(' OK'))
get.flushKeybuffer(keypress)
return hashes ^ int(hashlib.sha512(typed*8).hexdigest(), 16)
