A payment processing server generates an asymmetric cryptographic key pair, over one secure communications channel providing a mobile device with one cryptographic key of the cryptographic key pair, and saves another cryptographic key of the cryptographic key pair in a pending transaction database in unique association with a single-use payment number and a financial account. The server encrypts the payment number, which does not identify the financial account, with the another cryptographic key and provides the mobile device with the encrypted payment number over another secure communications channel distinct from the one secure communications channel. The server receives from a payment terminal a payment completion request that includes the encrypted payment number decrypted with the one cryptographic key. The payment processing server queries the pending transaction database with the decrypted payment number to identify the associated financial account, and effects completion of the transaction using the identified financial account.

A Time-based One-Time Password (TOTP) validator is interposed between a principal and a network service. The validator interacts with a mobile application (app) on the mobile device associated with the principal to dynamically supply a validator secret. The secret and, perhaps, other information are processed by the app to generate a TOTP when the principal attempts to access a protected resource of the network service. The validator independently generates the TOTP and compares the app generated TOTP, and on a successful match, a principal's access device is redirected for access to the protected resource.

A Time-based One-Time Password (TOTP) validator is interposed between a principal and a network service. The validator interacts with a mobile application (app) on the mobile device associated with the principal to dynamically supply a validator secret. The secret and, perhaps, other information are processed by the app to generate a TOTP when the principal attempts to access a protected resource of the network service. The validator independently generates the TOTP and compares the app generated TOTP, and on a successful match, a principal's access device is redirected for access to the protected resource.

An unlock method and system for an air-conditioning unit. The unlock system includes: a display apparatus; an input apparatus; and a control apparatus in communication with the display apparatus and the unlock system is configured to perform the following operations: generating a dynamic graphic according to at least an identification code and an update code; generating an unlock password according to at least a certificate, the identification code and the update code; receiving an unlock password through the input apparatus; comparing the unlock password received from the input apparatus with the generated unlock password; and granting a corresponding permission if the acquired unlock password is consistent with the generated unlock password.

A method may include sending, to a provisioning service and by an application executing on a virtual machine, a local authentication token for a user of the virtual machine. The provisioning service may use the local authentication token to generate a portable access token. The method may further include receiving, from the provisioning service, the portable access token, and launching, by the application and for the user, a session in a web service by sending the portable access token to an application programming interface (API) of the web service.

A method of rolling security for a system that includes multiple server groups, such as a first server group of one or more servers and a second server group of one or more servers. The method includes repeatedly initiating rebuilding of the first server group of one or more servers. The method also includes repeatedly initiating rebuilding of the second server group of one or more servers. The rebuilding of the first server group of one or more servers is staggered in time from the rebuilding of the second server group of one or more servers. The servers may be physical servers or virtual machines. Rolling security may also be applied to software containers, computing devices within a data center, and computing devices outside of a datacenter.

An access management and reporting system includes a keysafe that is located outside of a building and a communication system that is located within the building. The communication system is configured to perform, over a short-range wireless communication protocol, two-way communication with a communication module of the keysafe. The system also includes a server that is located remote from the building and the keysafe. The server is configured to perform, over a long-range communication protocol, two-way communication with the communication system located within the building, is configured to manage access to the keysafe, and is configured to handle reporting related to access of the keysafe.

A method includes receiving, at an access point, an access request from a first device after an expiration of a first passcode. The access request is encrypted based on the first passcode. The method includes making a determination by the access point before an expiration of a usage time of a first passcode usage list that an identifier of the first device is included in the first passcode usage list. The method also includes, in response to making the determination, generating, at the access point, data representing a second passcode by encrypting the second passcode using the first passcode; and sending the data representing the second passcode from the access point to the first device.

Disclosed are various approaches for retrieving contacts from a plurality of federated services. In one example, an authentication notification is received from an identity manager. The authentication notification can include an identifier for a user account and a single sign-on token for the user account. A federated service to authenticate on behalf of the user account is identified. The single sign-on token is transmitted to the federated service for authentication. An authentication token and a refresh token are received from the federated service. The authentication token is determined to expire within a threshold time period. A determination is made that the refresh token has not expired. The refresh token is transmitted to the federated service for a replacement authentication token.

Method, apparatus and computer program product for multi-device user authentication are described herein. For example, the apparatus includes at least one processor and at least one non-transitory memory including program code. The at least one non-transitory memory and the program code are configured to, with the at least one processor, identify, on a first computing device, a first active interface session associated with one or more active authentication conditions each configured to enable access to a group-based communication interface of a group-based communication system; cause a first computing device to present an authentication command interface for the first active interface session; receive an interface session request from a second computing device indicating electronic communication by the second computing device with the authentication command interface; and cause the second computing device to execute limited user authentication routines each configured to enable a respective active authentication condition on the second computing device.