New patents are issued by the USPTO on Tuesday's. This week's Spotlight Patents continue the theme of blockchain (distributed ledger, smart contracts) and digital rights management broadly construed. Assigned to BofA, the first patent addresses techniques for for establishing secure access for users in a process data network. Assigned to Amazon, the second patent addresses techniques for signature delegation.
10,142,312, "System for establishing secure access for users in a process data network," assigned to Bank of America.
Systems, computer program products, and methods are described herein for a system for establishing secure access for users in a process data network. The present invention is configured to create a block chain of resource information based on at least aggregated information associated with past transfer of resources executed by an entity; analyze the block chain of resource information to determine a pattern associated with the past transfer of resources executed by the entity; receive an indication that the entity has executed a transfer of resources; receive information associated with the transfer of resources; compare the information associated with the transfer of resources with the pattern associated with the past transfer of resources executed by the entity to determine a match; and allow the execution of the transfer of resources.
10,129,034, "Signature delegation," assigned to Amazon.
A signature authority generates a master seed value that is used to generate a seed tree of subordinate nodes. Each subordinate node of the seed tree is generated from the value of its parent node using a cryptographic hash or one-way function. The signature authority selects subordinate seed values from the seed tree which are distributed to one or more subordinates, each of which generates a set of one-time-use cryptographic keys from the provided seed. Each subordinate generates a hash tree from its set of one-time-use cryptographic keys, and returns the root of its hash tree to the signature authority. The signature authority integrates the hashes provided by the key generators into a comprehensive hash tree, and the root of the hash tree acts as a public key for the signature authority.