Private Key Sharding

Mozi enhances security by implementing Private Key Sharding, a method that splits a user's private key into multiple shards. These shards are distributed across secure locations, ensuring that no single entity has access to the complete key.

How It Works

1. Key Generation:

   • When a user creates a wallet, Mozi generates a private key.

   • This key is then divided into multiple shards using Shamir's Secret Sharing algorithm.

2. Sharding Distribution:

   • The shards are securely distributed across multiple servers and user-controlled devices.

   • No single server or device holds the entire private key.

3. Transaction Authorization:

   • To authorize a transaction, Mozi retrieves the necessary shards.

   • A quorum of shards is combined to reconstruct the private key temporarily for transaction signing.

   • Once the transaction is signed, the key is immediately discarded.

4. Security Benefits:

   • Reduces the risk of key compromise, as an attacker would need access to multiple shards from different locations.

   • Enhances fault tolerance, allowing for recovery even if some shards are lost.

5. User Control:

   • Users can opt to store certain shards on their personal devices for added control.

   • Mozi provides options to manage shard recovery and backup.

Security Features

• Encryption: All data transmitted and stored within Mozi is encrypted using industry-standard protocols.

• Private Key Sharding: Provides an additional layer of security by distributing private key shards across multiple locations.

• Backup and Recovery: Secure backup options to ensure you can recover your wallet in case of device loss.