Elliptic curve cryptography key management sensor network based on

The present invention discloses a sensor network of the elliptic curve cryptographic key management method based on the use of elliptic curve cryptography to ensure the sensor network connectivity, scalability and robustness; the same session key is derived to obtain the encryption key and an integrity key, so that the key generation functions are divided, and more generally in line with the technical specifications; and an encryption key and session key are used, and were added to the acknowledgment mechanism, so that the entire complete system better method.