The Toronto-Dominion Bank
MANAGEMENT OF CRYPTOGRAPHICALLY SECURE EXCHANGES OF DATA USING PERMISSIONED DISTRIBUTED LEDGERS

Abstract:

The disclosed embodiments include processes that manage a cryptographically secure generation and exchange of data between network-connected systems operating within a computing environment using a permissioned distributed ledger. For example, and based on secure interaction with a distributed smart contract maintained within ledger blocks of the permissioned distributed ledger, an apparatus and a counterparty system may generate local symmetric encryption keys that facilitate a secure communication session between the apparatus and the counterparty system. Using the symmetric encryption key, the apparatus may generate a cryptographically secure representation of generated or obtained data, which may be transmitted to the counterparty system across the secure communications channel. In response to a verification of an integrity of the cryptographically secure representation, the counterparty system may perform operations that, in conjunction with corresponding node systems, record the cryptographically secure representation within a portion of the permissioned distributed ledger.