Novel Method for Key Storage Systems

To ensure for the security of PKI users' private keys, a new method for accessing and storing private keys is proposed in this article. Using advanced features of watermarking and symmetric encryption, the shared private key slices are encrypted and stored in different boxes, and the entire private key is reconstructed as long as the boxes are effective. The secure performance of storing and accessing private keys is also presented in the scheme. At the same time, the legal users can be verified by system using biometric or signature authentication.