http://hg.viff.dk/viff/rev/cecc7b3c6eb0
changeset: 1138:cecc7b3c6eb0
user: Marcel Keller <[email protected]>
date: Wed Feb 18 14:32:24 2009 +0100
summary: Added options to the AES test application.
One can now choose different variants of inversion by exponentiation and whether
the whole computation should be prepared at once.
diffstat:
1 file changed, 13 insertions(+), 4 deletions(-)
apps/aes.py | 17 +++++++++++++----
diffs (37 lines):
diff -r b6d229859b5b -r cecc7b3c6eb0 apps/aes.py
--- a/apps/aes.py Tue Feb 17 18:15:32 2009 +0100
+++ b/apps/aes.py Wed Feb 18 14:32:24 2009 +0100
@@ -34,12 +34,20 @@
parser = OptionParser(usage="Usage: %prog [options] config_file")
-parser.add_option("-e", "--exponentiation", action="store_true",
- help="Use exponentiation to invert bytes (default).")
+parser.add_option("-e", "--exponentiation", action="store", type="int",
+ metavar="variant",
+ help="Use exponentiation to invert bytes. "
+ "Default is the shortest sequential chain. "
+ "Possibilities: " +
+ "\n".join(["%d: %s " %
+ (i, s) for (i, s)
+ in enumerate(AES.exponentiation_variants)]))
parser.add_option("-m", "--masking", action="store_false",
dest="exponentiation",
help="Use masking to invert bytes.")
-parser.set_defaults(exponentiation=True)
+parser.set_defaults(exponentiation=1)
+parser.add_option("-o", "--at-once", action="store_true",help="Prepare "
+ "the whole computation at once instead of round-wise.")
# Add standard VIFF options.
Runtime.add_options(parser)
@@ -56,7 +64,8 @@
print "Started at %f." % start
aes = AES(rt, 192, use_exponentiation=options.exponentiation)
- ciphertext = aes.encrypt("a" * 16, key, True)
+ ciphertext = aes.encrypt("a" * 16, key, True,
+ prepare_at_once=options.at_once)
opened_ciphertext = [rt.open(c) for c in ciphertext]
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