def save_key_bio(self,
bio,
cipher='aes_128_cbc',
callback=util.passphrase_callback):
# type: (BIO.BIO, Optional[str], Callable) -> int
"""
Save the key pair to an M2Crypto.BIO.BIO object in PEM format.
@param bio: M2Crypto.BIO.BIO object to save key to.
@param cipher: Symmetric cipher to protect the key. The default
cipher is 'aes_128_cbc'. If cipher is None, then the key is saved
in the clear.
@param callback: A Python callable object that is invoked
to acquire a passphrase with which to protect the key.
The default is util.passphrase_callback.
"""
if cipher is None:
return m2.ec_key_write_bio_no_cipher(self.ec, bio._ptr(), callback)
else:
ciph = getattr(m2, cipher, None)
if ciph is None:
raise ValueError('not such cipher %s' % cipher)
return m2.ec_key_write_bio(self.ec, bio._ptr(), ciph(), callback)
def save_key_bio(self, bio, cipher='aes_128_cbc',
callback=util.passphrase_callback):
"""
Save the key pair to an M2Crypto.BIO.BIO object in PEM format.
@type bio: M2Crypto.BIO.BIO
@param bio: M2Crypto.BIO.BIO object to save key to.
@type cipher: string
@param cipher: Symmetric cipher to protect the key. The default
cipher is 'aes_128_cbc'. If cipher is None, then the key is saved
in the clear.
@type callback: Python callable
@param callback: A Python callable object that is invoked
to acquire a passphrase with which to protect the key.
The default is util.passphrase_callback.
"""
if cipher is None:
return m2.ec_key_write_bio_no_cipher(self.ec, bio._ptr(), callback)
else:
ciph = getattr(m2, cipher, None)
if ciph is None:
raise ValueError('not such cipher %s' % cipher)
return m2.ec_key_write_bio(self.ec, bio._ptr(), ciph(), callback)