/rev/c15bc2925969
changeset: 1198:c15bc2925969
user: Marcel Keller <[email protected]>
date: Fri Jul 03 10:48:59 2009 +0200
summary: Added possibility to specify key length by a parameter.
diffstat:
apps/aes.py | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diffs (31 lines):
diff -r b1ee0d5e116f -r c15bc2925969 apps/aes.py
--- a/apps/aes.py Wed May 27 16:12:42 2009 +0200
+++ b/apps/aes.py Fri Jul 03 10:48:59 2009 +0200
@@ -35,6 +35,9 @@
parser = OptionParser(usage="Usage: %prog [options] config_file")
+parser.add_option("-K", "--keylength", action="store", type="int",
+ help="Key length: 128, 192, or 256. Defaults to 128.")
+parser.set_defaults(keylength=128)
parser.add_option("-e", "--exponentiation", action="store", type="int",
metavar="variant",
help="Use exponentiation to invert bytes. "
@@ -67,7 +70,7 @@
start = time.time()
print "Started at %f." % start
- aes = AES(rt, 192, use_exponentiation=options.exponentiation)
+ aes = AES(rt, options.keylength, use_exponentiation=options.exponentiation)
ciphertext = []
@@ -88,7 +91,7 @@
def share_key(rt):
key = []
- for i in range(24):
+ for i in range(options.keylength / 8):
inputter = i % 3 + 1
if (inputter == id):
key.append(rt.input([inputter], GF256, ord("b")))
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