Vehicle program encrypting and verifying method and device

The invention provides a vehicle program encrypting and verifying method and device. The program encrypting method comprises the following steps: generating seed data; generating a seed key according to the seed data; storing the seed data and the seed key to a target file according to the seed data storage address and the seed key storage address which are recorded in an MAP file. According to the method above, corresponding seed data information can be stored in the target file, thus the target file can be effectively verified while being read, and as a result, the validity of the program file used in upgrading of a vehicle can be ensured.