The present invention relates to an
encryption authentication method for
data acquisition equipment, and the steps of the present invention are: S1, generate an M*P matrix S; S2, take out the numbers in the matrix S uniformly by row or column,
encode each row or column according to a predetermined encoding rule, generate an
authentication ciphertext based on the encoding result, and send the
authentication ciphertext to the device to be authenticated; S3, obtain the response
ciphertext returned by the device to be authenticated, and decode the response ciphertext to obtain an M*N
encryption matrix C; S4, calculate C'=S*M, if C=C', the authentication is successful, and the subsequent normal use can be carried out; otherwise, the authentication fails, the subsequent operation process is stopped, and the number of retries is increased by 1; S5, judge whether the number of retries exceeds the limited number, if not, return to step S1; if exceeded, the
system will be locked for a period of time. The present invention realizes the authentication of the effectiveness of the device, avoids the reduction of the stability and performance of the
system caused by the use of third-party
imitation equipment, and avoids the hidden dangers of the entire
system.