[Tutor] How do I save the output of the rotor module?
Mike Faire
mikef at formostpkg.com
Thu Nov 6 12:52:36 EST 2003
Hi everyone!
I wrote a simple script to get acquainted with the rotor module.
Encrypting and decrypting was simple enough.
However, once I save the encrypted list to a file,
it will not decrypt correctly beyond the first newline.
Here is the code:
#!/usr/bin/env python
import rotor
contents = ["This is a line of text\n", "including newlines\n", "for
rotor testing."]
print contents # shows a list of three strings
encon = []
rt = rotor.newrotor('606')
for item in contents:
encon.append(rt.encrypt(item))
print encon
# at this point, print encon shows a list of three strings, encrypted
fh = open('text.txt', 'w')
fh.writelines(encon) # write to a file
fh.close()
fh = open('text.txt', 'r')
incoming = fh.readlines() # read from a file
fh.close()
print incoming
# after writing the strings to disk and then reading them back in
# again, print incoming shows a list comprised of one large string
after = []
for item in incoming:
after.append(rt.decrypt(item))
print after
# the one large string will only decrypt correctly as far as the
# first newline
Do I need to use pickle for that list?
If they are strings, why does it matter that
they happen to contain representations of binary data?
TIA
Mike
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