Bank of America has been granted a patent by the US Patent and Trademark Office for a system that uses time and native security tokens to control access and security for subcomponents of blockchains.
Bank of America's newest blockchain-related patent, a "system for managing security and access to resource sub-components[1]" (USPTO patent #9979718), offers a novel solution to managing resources associated with security and access to subcomponents – namely, individual blocks – of a decentralized blockchain network.
In order to provide a "designated entity" with access to resources particular to a specific block, Bank of America's new invention employs a cryptographically generated "security token" as a type of digital key, configured to allow users access. Once predesignated, or whitelisted, they can use a blockchain whose access is sorted and regulated through three access controls: specific digital keyword tags, a cryptographic key in the form of a token, and a time window.
Tagging Library
The patent suggests that applying digital tags to blocks for reference purposes – searchable via "keywords associated with the tag[s]" – is a novel approach to designating specific blocks. This solution specifically addresses the need to provide users with the "ability to readily identify blocks that are relevant to the designated users' concern."
Bank of America further notes that this system – in at least one possible iteration – will be automated, although "alternatively, in other embodiments of the invention, a block holder or the like may manually request generation of a tag(s) and define the attributes associated with the tag."
Security "Lock" Opens with a Token
Once the block and/or resources sought by a designated user have been located, the system offers its "security token" as a key that allows the user access to the block they've
