An Efficient Personal Key Recovery in Self-Sovereign Identity Environments

An efficient method for personal key recovery in self-sovereign identity environments, combining online and offline infrastructure for personal identification is proposed in this paper. This new concept, self-sovereign identity, that emerged in recent years supports various applications like online banking, digital assets, and digital identity management. Public key encryption is fundamental in self-sovereign identity and the management and recovery of private keys is of paramount importance. The proposed method uses a fragmentation and combination strategy for private keys, augmented by bio-metric recognition utilizing encryption algorithms such as AES, SEED, and SSS and minutiae points. A private key storage and recovery approach utilizing a combination of online and offline environments through a hash graph is also proposed.