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//proc/self/root/usr/share/doc/m2crypto-0.16/demo/smime.howto/dv.py
#!/usr/bin/python """S/MIME HOWTO demo program. Copyright (c) 1999-2001 Ng Pheng Siong. All rights reserved.""" from M2Crypto import BIO, SMIME, X509 # Instantiate an SMIME object. s = SMIME.SMIME() # Load private key and cert. s.load_key('recipient_key.pem', 'recipient.pem') # Load the signed/encrypted data. p7, data = SMIME.smime_load_pkcs7('se.p7') # After the above step, 'data' == None. # Decrypt p7. 'out' now contains a PKCS #7 signed blob. out = s.decrypt(p7) # Load the signer's cert. x509 = X509.load_cert('signer.pem') sk = X509.X509_Stack() sk.push(x509) s.set_x509_stack(sk) # Load the signer's CA cert. In this case, because the signer's # cert is self-signed, it is the signer's cert itself. st = X509.X509_Store() st.load_info('signer.pem') s.set_x509_store(st) # Recall 'out' contains a PKCS #7 blob. # Transform 'out'; verify the resulting PKCS #7 blob. p7_bio = BIO.MemoryBuffer(out) p7, data = SMIME.smime_load_pkcs7_bio(p7_bio) v = s.verify(p7) print v