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'''
The dual key system allows for the creation of keypairs that contain both
cryptographic and signing keys
'''
# import libnacl libs
import libnacl
import libnacl.base
import libnacl.public
import libnacl.sign
class DualSecret(libnacl.base.BaseKey):
'''
Manage crypt and sign keys in one object
'''
def __init__(self, crypt=None, sign=None):
self.crypt = libnacl.public.SecretKey(crypt)
self.signer = libnacl.sign.Signer(sign)
self.sk = self.crypt.sk
self.seed = self.signer.seed
self.pk = self.crypt.pk
self.vk = self.signer.vk
super().__init__()
def sign(self, msg):
'''
Sign the given message
'''
return self.signer.sign(msg)
def signature(self, msg):
'''
Return just the signature for the message
'''
return self.signer.signature(msg)
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