def authorization_id_confirmation(auth_id, nonce_abf, key):
cmd_id = 0x001E
cmd_id = utils.pack_u16(cmd_id)
auth_id = utils.pack_u32(auth_id)
message = auth_id + nonce_abf
auth_h = nacl.bindings.crypto_auth_hmacsha256(message, key)
message = cmd_id + auth_h + auth_id
return message
def lock_action(auth_id, lock_action, bridge_id, flags, nonce_k):
cmd_id = 0x000D
cmd_id = utils.pack_u16(cmd_id)
lock_action = utils.pack_u8(lock_action)
bridge_id = utils.pack_u32(bridge_id)
flags = utils.pack_u8(flags)
message = cmd_id + lock_action + bridge_id + flags + nonce_k
return message
def _inject_error_encrypted(self,
error_id,
cmd_id=0xFFFF,
auth_id=0xFFFFFFFF):
error = error_id
cmd_id = cmd_id
message = cmd.error_bridge(error, cmd_id)
decrypted = utils.pack_u32(auth_id) + message
decrypted = utils.add_crc(decrypted)
return auth_id, message, decrypted
def encrypt_tx(auth_id, message, key, nonce=''):
auth_id = utils.pack_u32(auth_id)
pdata = auth_id + message
pdata = utils.add_crc(pdata)
encrypted = encrypt(pdata, key, nonce)
nonce = encrypted[:24]
pdata = encrypted[24:]
length = len(pdata)
length = utils.pack_u16(length)
message = nonce + auth_id + length + pdata
return message
def authorization_data(id_type, bridge_id, name, nonce_abf, nonce_k, key):
cmd_id = 0x0006
cmd_id = utils.pack_u16(cmd_id)
id_type = utils.pack_u8(id_type)
bridge_id = utils.pack_u32(bridge_id)
z_fill = a2b_hex('0000000000000000000000000000000000000000000000000000000000000000')
name = a2b_hex(hexlify(name))[:15] + z_fill
name = name[:32]
message = id_type + bridge_id + name + nonce_abf + nonce_k
auth_h = nacl.bindings.crypto_auth_hmacsha256(message, key)
message = cmd_id + auth_h + id_type + bridge_id + name + nonce_abf
return message