Quantum Bit Commitment Combinbing with BB84 Protocol
  We proposed a new quantum bit commitment scheme in which secret key need not to be provided by other quantum key distribution system. We can get the bit commitment with probability p by adding a waiting time in a frame during operating the BB84 protocol. Then the measurement outcomes can be encrypted by one-time pad with the key generated by BB84 protocol. We can also obtain the redundant secret keys to encrypt other information in this quantum key distribution system. 
Linxi Zhang, Changhua Zhu, Nan Zhao and Changxing Pei
quant-ph