The recent 2.2 version of the Bee client introduces long-awaited access control, allowing publishers to secure content while efficiently managing who can decrypt and access it.
In Ethereum Swarm, access control is maintained through a system where data is stored in encrypted form, and the decryption keys are distributed securely to authorized users.
Implementing access control in a decentralized environment like Swarm is complex; the ACT (Access Control Trie) provides a solution for key management and secure content access.
The core mechanism involves a session key, where both grantee and publisher can derive a shared secret from their private and public keys, facilitating encrypted access.
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