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change abstract base class registration to use a decorator in modes #111

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merged 1 commit into from
Oct 17, 2013
Merged

change abstract base class registration to use a decorator in modes #111

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17 changes: 11 additions & 6 deletions cryptography/primitives/block/modes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,14 @@
from cryptography.primitives import interfaces


def register(iface):
def register_decorator(klass):
iface.register(klass)
return klass
return register_decorator


@register(interfaces.ModeWithInitializationVector)
class CBC(object):
name = "CBC"

Expand All @@ -28,6 +36,7 @@ class ECB(object):
name = "ECB"


@register(interfaces.ModeWithInitializationVector)
class OFB(object):
name = "OFB"

Expand All @@ -36,6 +45,7 @@ def __init__(self, initialization_vector):
self.initialization_vector = initialization_vector


@register(interfaces.ModeWithInitializationVector)
class CFB(object):
name = "CFB"

Expand All @@ -44,15 +54,10 @@ def __init__(self, initialization_vector):
self.initialization_vector = initialization_vector


@register(interfaces.ModeWithNonce)
class CTR(object):
name = "CTR"

def __init__(self, nonce):
super(CTR, self).__init__()
self.nonce = nonce


interfaces.ModeWithInitializationVector.register(CBC)
interfaces.ModeWithInitializationVector.register(OFB)
interfaces.ModeWithInitializationVector.register(CFB)
interfaces.ModeWithNonce.register(CTR)