Abstract: Techniques described herein relate to a method for transmitting secret information to a trusted device via an untrusted intermediary device, the method comprising: establishing, by a primary authentication device, a connection with a secondary authentication device via an untrusted intermediary device; receiving, from the secondary authentication device, a secondary public transfer key, a secondary public device key, a secondary attestation signature, and a secondary certificate; in response to verifying that the secondary certificate confirms the secondary public device key and that the secondary attestation signature confirms the primary public transfer key and the secondary public transfer key, calculating a transfer key unique to a transfer of the secret information; encrypting the secret information with the transfer key; and transmitting, to the secondary authentication device via the untrusted intermediary device, the encrypted secret information, wherein the secondary authentication device is configur

Abstract: Disclosed herein are systems and method for transaction authorization. In one aspect, a method comprises receiving, at an authenticating device from a terminal device, a request to generate a dataset, the request comprising a plurality of data object values indicative of transaction information. The method comprises generating, based on the plurality of data object values, a transaction comprising a source identifier, a destination identifier, a transaction value, and authorization data in a form of a digital signature. The method comprises encapsulating and embedding either the at least one portion of the transaction or the symmetric encryption key in the discretionary data fields and transmitting the dataset to the terminal device that forwards the transaction to a processing service configured to reconstruct the transaction from the forwarded dataset and process the transaction in a target ledger.