Abstract: A method for leveraging a universal credential in an access control system according to one embodiment includes generating, by a cloud system, a CBOR web token for user access to at least one electronic lock, wherein the CBOR web token includes a group tag associated with a set of access rights for a group of users and a cryptographic signature, transmitting the CBOR web token to a user mobile device, receiving, by a first electronic lock, the CBOR web token from the user mobile device for access to a passageway secured by the first electronic lock, verifying an authenticity of the cryptographic signature of the CBOR web token and that the group tag of the CBOR web token is associated with a group authorized to access the passageway secured by the first electronic lock, and unlocking a lock mechanism in response to the verifications.

Abstract: A back-end server system for step-up authentication for conversational interfaces using spoken passphrases receive a conversational request for an action which requires step-up authorization; respond to the user through conversational artificial intelligence (AI) warning the user that an additional step is required; transmit, over a dedicated communication channel to the user and different than the conversational interface, a secret passphrase generated using a spoken passphrase dictionary; receive, by the conversational interface, a spoken submission from the user in response to the warning; confirm validity of the received spoken submission by comparing the spoken submission to the passphrase; and in response to confirmation of the spoken submission, authorize the requested action.

Abstract: A method for leveraging a universal credential in an access control system according to one embodiment includes generating, by a cloud system, a CBOR web token for user access to at least one electronic lock, wherein the CBOR web token includes a group tag associated with a set of access rights for a group of users and a cryptographic signature, transmitting the CBOR web token to a user mobile device, receiving, by a first electronic lock, the CBOR web token from the user mobile device for access to a passageway secured by the first electronic lock, verifying an authenticity of the cryptographic signature of the CBOR web token and that the group tag of the CBOR web token is associated with a group authorized to access the passageway secured by the first electronic lock, and unlocking a lock mechanism in response to the verifications.

Abstract: A method of preparing an antibiotic composition which imparts stability to the antibiotic when used in an animal feed.