METHOD AND DEVICE FOR EXCHANGING KEY

摘要

A method and a device for exchanging key are provided. The method includes: an optical line terminal and an optical network unit generate a random number respectively; said optical line terminal and optical network unit transmit the generated random number to the other respectively; said optical line terminal and optical network unit use a HAMC (Hash Message Authentication Code) function, an arranged password and the random numbers generated by both sides to obtain the key by calculation.