def make_document(data):
"""
Make OpenPGP document containing one-pass signature packet,
literal packet and binary signature packet
See details in RFC4880
"""
g = GPG(gnupghome=settings.GNUPG_HOME)
header = "%s%s" % (chr(144), chr(13)) #0x90 0x0D
signature_packet = extract_signature_packet(extract_signature(data))
body = strip_signature(data).rstrip()
literal_packet = g.store(body).data
one_pass_signature_packet = make_one_pass_signature_packet(signature_packet)
return "%s%s%s%s" % (
header,
one_pass_signature_packet,
literal_packet,
signature_packet
)
def get_signature(self):
try:
signature = extract_signature(self.data[1])
except TemplateError:
return None
return signature