Public bug reported:
Given the following code:
#!/usr/bin/python
from M2Crypto import BIO, Rand, SMIME
_text = 'a sign of our times'
def sign(message):
buf = BIO.MemoryBuffer(message)
Rand.load_file('randpool.dat', -1)
s = SMIME.SMIME()
s.load_key('signer_key.pem', 'signer.pem')
p7 = s.sign(buf)
Rand.save_file('randpool.dat')
out = BIO.MemoryBuffer()
s.write(out, p7, BIO.MemoryBuffer(message))
return out.read()
print '2>>', sign(_text)
On Ubuntu 10.04.4 I got the following result (which is what I expect):
2>> MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/x-pkcs7-signature";
micalg=sha1; boundary="----0B8377C13703649AB80D5DE6996E3D8D"
This is an S/MIME signed message
------0B8377C13703649AB80D5DE6996E3D8D
a sign of our times
------0B8377C13703649AB80D5DE6996E3D8D
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"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------0B8377C13703649AB80D5DE6996E3D8D--
However, on 12.04.2, I got this (that is, the signature is missing):
2>> MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/x-pkcs7-signature";
micalg="sha1"; boundary="----FB1930A6CCBB24D90C563DEBB2C0CBBC"
This is an S/MIME signed message
------FB1930A6CCBB24D90C563DEBB2C0CBBC
a sign of our times
(and that's it)
Version of python-m2crypto is 0.21.1-2ubuntu2.
** Affects: m2crypto (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1203537
Title:
s/mime signature not working
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