This article describes the implementation of the dual-key pair model and the whole key life cycle management in a system. Whats more, it backups and recovers the decryption private key using secret sharing scheme.

• 介绍了系统中双密钥模型的实现和整个的密钥生命周期管理，并且利用秘密共享对解密私钥进行备份和恢复。