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<H1>[pycrypto] Pycrypto openssl interoperability</H1>
<B>Richard Moore</B>
<A HREF="mailto:pycrypto%40lists.dlitz.net?Subject=%5Bpycrypto%5D%20Pycrypto%20openssl%20interoperability&In-Reply-To="
TITLE="[pycrypto] Pycrypto openssl interoperability">richmoore44 at gmail.com
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<I>Thu Dec 16 07:44:25 CST 2010</I>
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<PRE>Hi,
I'm new to pycrypto and have playing around with it a bit. I can
successfully encrypt and decrypt things using the library, however in
order to check I was doing things correctly, I've tried to decrypt
something encrypted with openssl - sadly without success.
Encrypt the file secrets.txt using openssl, AES 128bit CBC. The
password is read from the file pass.txt:
openssl enc -aes-128-cbc -pass file:pass.txt -a -in secrets.txt -out
secrets.txt.enc
Then decrypt the result using pycrypto:
from Crypto.Cipher import AES
from base64 import b64encode, b64decode
f = open('pass.txt')
key = f.read()
aes = AES.new(key, AES.MODE_CBC)
f = open('secrets.txt.enc')
b64_cipher_text = f.read()
cipher_text = b64decode(b64_cipher_text)
print aes.decrypt(cipher_text)
Can anyone tell me where I'm going wrong, or perhaps has an example of
working interoperability with openssl?
Cheers
Rich.
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