The invention discloses an instruction reinforcing and discriminating method and
system for an unmanned plane. During the implementation of instruction reinforcing, the method comprises a step of instruction reinforcing: reinforcing the instruction through the identification secret key of an instruction sender when the instruction sender sends an instruction to an opposite side, packaging the instruction and reinforcing data, and transmitting the
package to the opposite side; a step of instruction discriminating which comprises the substeps: (1), enabling an instruction receiving side to receive the instruction and the reinforcing data, verifying the authenticity of the instruction reinforcing information, and switching to a substep (2) if the
verification is passed; (2), obtaining the identification of the instruction sender and an instruction
timestamp from the reinforcing data, and verifying whether the identification of the instruction sender is valid or not and whether the instruction is in an allowed
time range or not: executing the instruction if the
verification is passed, or else refusing the execution. The instruction reinforcing and discriminating is based on a combined public key
system and a national commercial
password algorithm SM9. The method achieves a purpose that the unmanned plane carries out the
verification of the validity of a remote instruction, and can effectively prevents a
hacker from attacking the unmanned plane.