This invention relates to a DVS data
encryption method, decryption method, apparatus, and
system, comprising: acquiring an original
event stream E; using an initial key parameter K to drive a one-dimensional
chaotic map and LIF neurons, extracting the
chaotic pulse intervals corresponding to adjacent firing pulses of LIF neurons, and performing
least significant bit purification
processing to generate a binary key
stream KS; based on the binary key
stream KS, using Fisher-Yates
shuffling traversal to generate a time rearrangement mapping table and a spatial permutation mapping table; sequentially extracting events from the original
event stream E, using the binary key
stream KS as the overall driver, relying on the time rearrangement mapping table and the spatial permutation mapping table to complete global scrambling of timestamps, one-dimensional flattening and permutation of spatial coordinates, and combining the binary key stream KS to generate a key
mask, completing event polarity reversal, and obtaining an encrypted
event stream E'. This invention can reduce
system latency and reduce computational resources.