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| author | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-09-11 09:38:45 -0500 |
|---|---|---|
| committer | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-09-11 09:38:45 -0500 |
| commit | a1ec262a3596dbba4ff82ff7d05c4f265f794359 (patch) | |
| tree | 42a2b5a50611b58b25821aa80d71c7c6d469a749 /cryptography | |
| parent | 9287c2344c6c91ad838a251d3b6fde2a6ea88b56 (diff) | |
| download | cryptography-a1ec262a3596dbba4ff82ff7d05c4f265f794359.tar.gz cryptography-a1ec262a3596dbba4ff82ff7d05c4f265f794359.tar.bz2 cryptography-a1ec262a3596dbba4ff82ff7d05c4f265f794359.zip | |
CFB support
This requires a bit of explanation. OpenSSL has methods that implement
standard CFB, 1-bit CFB (cfb1), and 8-bit CFB (cfb8). Unfortunately,
while old (read: 0.9.7) versions of OpenSSL appear to test these
variants, newer versions have a comment stating that cfb{1,8} are
unsupported. Accordingly, I've backed out any support for the variants
for now. We can add it back into the CFB class if and when we gain a
backend that supports arbitrary s for 1 <= s <= block_size
Diffstat (limited to 'cryptography')
| -rw-r--r-- | cryptography/primitives/block/modes.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/cryptography/primitives/block/modes.py b/cryptography/primitives/block/modes.py index 62a1c2c9..0f17a1a5 100644 --- a/cryptography/primitives/block/modes.py +++ b/cryptography/primitives/block/modes.py @@ -36,5 +36,14 @@ class OFB(object): self.nonce = nonce +class CFB(object): + name = "CFB" + + def __init__(self, initialization_vector): + super(CFB, self).__init__() + self.initialization_vector = initialization_vector + + interfaces.ModeWithInitializationVector.register(CBC) interfaces.ModeWithNonce.register(OFB) +interfaces.ModeWithInitializationVector.register(CFB) |