In order to resolve the problems of node multiple keys management and protected storage in mobile ad hoc networks (MANETs),a new ID-based node key management scheme combined with next generationprotected storage of portable trusted platform module (PTPMNexts) was presented for MANETs.In the scheme,the ECC combined public key (CPK) was adopted to generate multiple keys which were protected and managed by PTPM.Nexts. Security analysis shows that the scheme has the ability to restrain the collusion attack. Also,performance evaluation of proposed scheme in a real-world ad hoc network indicates the feasibility in practice.