def magic_envelope(raw_data, data_type, key):
"""Wrap the provided data in a magic envelope."""
keypair = RSA.construct(
(base64_to_long(key.mod.encode('utf-8')),
base64_to_long(key.public_exponent.encode('utf-8')),
base64_to_long(key.private_exponent.encode('utf-8'))))
encoded_data = utils.encode(raw_data)
signed = sign(encoded_data, keypair)
return utils.create_magic_envelope(encoded_data, signed)
def magic_envelope(raw_data, data_type, key):
"""Wrap the provided data in a magic envelope."""
logging.debug('Signing key: %s %s', key.public_exponent, key.mod)
rsa = RSA.construct(
(base64_to_long(key.mod.encode('utf-8')),
base64_to_long(key.public_exponent.encode('utf-8')),
base64_to_long(key.private_exponent.encode('utf-8'))))
signed = sign(sig_plaintext(raw_data), rsa)
return utils.create_magic_envelope(utils.encode(raw_data), signed)
def verify(author_uri, data, signed):
"""Verify that ``signed`` is ``data`` signed by ``author_uri``."""
public_exp, mod = utils.get_public_key(author_uri)
public_exp = base64_to_long(public_exp)
mod = base64_to_long(mod)
rsa = RSA.construct((public_exp, mod))
data = utils.encode(data)
putative = base64_to_long(signed.encode('utf-8'))
esma = make_esma_msg(data, rsa)
return rsa.verify(esma, (putative,))