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<H1>[pycrypto] Public Key encryption of files</H1>
<B>Dave Pawson</B>
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TITLE="[pycrypto] Public Key encryption of files">dave.pawson at gmail.com
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<I>Thu Nov 10 12:26:52 CST 2011</I>
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<PRE>On 10 November 2011 18:18, Dean Macinskas <<A HREF="http://lists.dlitz.net/cgi-bin/mailman/listinfo/pycrypto">dmacinskas at geobridge.net</A>> wrote:
><i> All blocks need to be 16 bytes.  So for example, if the file is 2,000,005
</I>><i> bytes, you'd encrypt 125,000 16-byte blocks; you then have 5 bytes left
</I>><i> over, to which you'd add 11 padding bytes, which can be any binary value and
</I>><i> then encrypt that last block.
</I>
def _lazysecret(secret, blocksize=32, padding='}'):
"""pads secret if not legal AES block size (16, 24, 32)"""
if not len(secret) in (16, 24, 32):
return secret + (blocksize - len(secret)) * padding
return secret
Python makes it quite easy.
The reason I started to use it!
Thanks to
src <A HREF="http://www.turnkeylinux.org/blog/python-symmetric-encryption">http://www.turnkeylinux.org/blog/python-symmetric-encryption</A>
great piece of software.
regards
--
Dave Pawson
XSLT XSL-FO FAQ.
Docbook FAQ.
<A HREF="http://www.dpawson.co.uk">http://www.dpawson.co.uk</A>
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