def verify_and_generate_shared_secret(self, dh_secret, dh_received, auth,
B):
shared_secret = crypto_box_beforenm(
dh_received, dh_secret.key.sk) + crypto_box_beforenm(
B, dh_secret.key.sk)
crypto_auth_verify(auth, dh_received, shared_secret)
return shared_secret
def generate_diffie_shared_secret(self, dh_received, key=None):
if key == None:
key = self.key
tmp_key = self.generate_key(u"curve25519")
y = tmp_key.key.sk
Y = tmp_key.key.pk
shared_secret = crypto_box_beforenm(dh_received, y) + crypto_box_beforenm(dh_received, key.key.sk)
AUTH = crypto_auth(Y, shared_secret)
return shared_secret, Y, AUTH
def generate_diffie_shared_secret(self, dh_received, key=None):
if key == None:
key = self.key
tmp_key = self.generate_key(u"curve25519")
y = tmp_key.key.sk
Y = tmp_key.key.pk
shared_secret = crypto_box_beforenm(dh_received, y) + crypto_box_beforenm(dh_received, key.key.sk)
AUTH = crypto_auth(Y, shared_secret)
return shared_secret, Y, AUTH
def verify_and_generate_shared_secret(self, dh_secret, dh_received, auth, B):
shared_secret = crypto_box_beforenm(dh_received, dh_secret.key.sk) + crypto_box_beforenm(B, dh_secret.key.sk)
crypto_auth_verify(auth, dh_received, shared_secret)
return shared_secret
