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#!/usr/bin/env python
#
#vim: ts=4 sw=4 nowrap
#
"""PKI demo by Peter Teniz <peter.teniz@inverisa.net>"""
import M2Crypto
MBSTRING_FLAG = 0x1000
MBSTRING_ASC = MBSTRING_FLAG | 1
MBSTRING_BMP = MBSTRING_FLAG | 2
class Cert:
def __init__ ( self ):
self.RsaKey = { 'KeyLength' : 1024,
'PubExponent' : 0x10001, # -> 65537
'keygen_callback' : self.callback
}
self.KeyPair = None
self.PKey = None
self.X509Request = None
self.X509Certificate = None
def callback ( self, *args ):
return 'p'
def CreatePKey ( self ):
self.KeyPair = M2Crypto.RSA.gen_key( self.RsaKey['KeyLength'], self.RsaKey['PubExponent'], self.RsaKey['keygen_callback'] )
#PubKey = M2Crypto.RSA.new_pub_key( self.KeyPair.pub () )
self.KeyPair.save_key( 'KeyPair.pem', cipher='des_ede3_cbc', callback=self.callback )
self.PKey = M2Crypto.EVP.PKey ( md='sha1')
self.PKey.assign_rsa ( self.KeyPair )
def CreateX509Request ( self ):
#
# X509 REQUEST
#
self.X509Request = M2Crypto.X509.Request ()
#
# subject
#
X509Name = M2Crypto.X509.X509_Name ()
X509Name.add_entry_by_txt ( field='C', type=MBSTRING_ASC, entry='austria', len=-1, loc=-1, set=0 ) # country name
X509Name.add_entry_by_txt ( field='SP', type=MBSTRING_ASC, entry='kernten', len=-1, loc=-1, set=0 ) # state of province name
X509Name.add_entry_by_txt ( field='L', type=MBSTRING_ASC, entry='stgallen', len=-1, loc=-1, set=0 ) # locality name
X509Name.add_entry_by_txt ( field='O', type=MBSTRING_ASC, entry='labor', len=-1, loc=-1, set=0 ) # organization name
X509Name.add_entry_by_txt ( field='OU', type=MBSTRING_ASC, entry='it-department', len=-1, loc=-1, set=0 ) # organizational unit name
X509Name.add_entry_by_txt ( field='CN', type=MBSTRING_ASC, entry='Certificate client', len=-1, loc=-1, set=0 ) # common name
X509Name.add_entry_by_txt ( field='Email', type=MBSTRING_ASC, entry='user@localhost', len=-1, loc=-1, set=0 ) # pkcs9 email address
X509Name.add_entry_by_txt ( field='emailAddress', type=MBSTRING_ASC, entry='user@localhost', len=-1, loc=-1, set=0 ) # pkcs9 email address
self.X509Request.set_subject_name( X509Name )
#
# publickey
#
self.X509Request.set_pubkey ( pkey=self.PKey )
self.X509Request.sign ( pkey=self.PKey, md='sha1' )
#print X509Request.as_text ()
def CreateX509Certificate ( self ):
#
# X509 CERTIFICATE
#
self.X509Certificate = M2Crypto.X509.X509 ()
#
# version
#
self.X509Certificate.set_version ( 0 )
#
# time notBefore
#
ASN1 = M2Crypto.ASN1.ASN1_UTCTIME ()
ASN1.set_time ( 500 )
self.X509Certificate.set_not_before( ASN1 )
#
# time notAfter
#
ASN1 = M2Crypto.ASN1.ASN1_UTCTIME ()
ASN1.set_time ( 500 )
self.X509Certificate.set_not_after( ASN1 )
#
# public key
#
self.X509Certificate.set_pubkey ( pkey=self.PKey )
#
# subject
#
X509Name = self.X509Request.get_subject ()
#print X509Name.entry_count ()
#print X509Name.as_text ()
self.X509Certificate.set_subject_name( X509Name )
#
# issuer
#
X509Name = M2Crypto.X509.X509_Name ( M2Crypto.m2.x509_name_new () )
X509Name.add_entry_by_txt ( field='C', type=MBSTRING_ASC, entry='germany', len=-1, loc=-1, set=0 ) # country name
X509Name.add_entry_by_txt ( field='SP', type=MBSTRING_ASC, entry='bavaria', len=-1, loc=-1, set=0 ) # state of province name
X509Name.add_entry_by_txt ( field='L', type=MBSTRING_ASC, entry='munich', len=-1, loc=-1, set=0 ) # locality name
X509Name.add_entry_by_txt ( field='O', type=MBSTRING_ASC, entry='sbs', len=-1, loc=-1, set=0 ) # organization name
X509Name.add_entry_by_txt ( field='OU', type=MBSTRING_ASC, entry='it-department', len=-1, loc=-1, set=0 ) # organizational unit name
X509Name.add_entry_by_txt ( field='CN', type=MBSTRING_ASC, entry='Certificate Authority', len=-1, loc=-1, set=0 ) # common name
X509Name.add_entry_by_txt ( field='Email', type=MBSTRING_ASC, entry='admin@localhost', len=-1, loc=-1, set=0 ) # pkcs9 email address
X509Name.add_entry_by_txt ( field='emailAddress', type=MBSTRING_ASC, entry='admin@localhost', len=-1, loc=-1, set=0 ) # pkcs9 email address
#print X509Name.entry_count ()
#print X509Name.as_text ()
self.X509Certificate.set_issuer_name( X509Name )
#
# signing
#
self.X509Certificate.sign( pkey=self.PKey, md='sha1' )
print self.X509Certificate.as_text ()
if __name__ == '__main__':
run = Cert ()
run.CreatePKey ()
run.CreateX509Request ()
run.CreateX509Certificate ()
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