Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for receiving, from a user device, a request to include financial data describing a financial account in an interface, the financial account being associated with a particular financial institution; identifying one or more metadata attributes for accessing the financial account associated with the particular financial institution; obtaining a public digital key associated with the financial institution; providing, to the user device, data describing the one or more metadata attributes and the public digital key associated with the financial institution; receiving, from the user device, respective values for the one or more metadata attributes, the corresponding values having been encrypted by the user device using the public digital key; and storing the encrypted values for the one or more metadata attributes for use in accessing and aggregating financial data describing the financial account.

Abstract: An offline mutual authentication method for battery swapping includes communicating a first authentication request to a battery by a computing device associated with a battery charger. A first authentication response is communicated to the computing device. The first authentication response is verified, and a first challenge request is communicated to the battery. A first challenge response is communicated to the computing device. The first challenge response is verified, and a battery authentication status is communicated to the battery. A second authentication request is communicated to the computing device. A second authentication response is communicated to the battery. The second authentication response is verified, and a second challenge request is communicated to the computing device. A second challenge response is communicated to the battery. The second challenge response is verified, and a charger authentication status is communicated by the battery to the computing device.

Abstract: An offline mutual authentication method for battery swapping includes communicating a first authentication request to a battery by a computing device associated with a battery charger. A first authentication response is communicated to the computing device. The first authentication response is verified, and a first challenge request is communicated to the battery. A first challenge response is communicated to the computing device. The first challenge response is verified, and a battery authentication status is communicated to the battery. A second authentication request is communicated to the computing device. A second authentication response is communicated to the battery. The second authentication response is verified, and a second challenge request is communicated to the computing device. A second challenge response is communicated to the battery. The second challenge response is verified, and a charger authentication status is communicated by the battery to the computing device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for receiving, from a user device, a request to include financial data describing a financial account in an interface, the financial account being associated with a particular financial institution; identifying one or more metadata attributes for accessing the financial account associated with the particular financial institution; obtaining a public digital key associated with the financial institution; providing, to the user device, data describing the one or more metadata attributes and the public digital key associated with the financial institution; receiving, from the user device, respective values for the one or more metadata attributes, the corresponding values having been encrypted by the user device using the public digital key; and storing the encrypted values for the one or more metadata attributes for use in accessing and aggregating financial data describing the financial account.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for receiving, from a user device, a request to include financial data describing a financial account in an interface, the financial account being associated with a particular financial institution; identifying one or more metadata attributes for accessing the financial account associated with the particular financial institution; obtaining a public digital key associated with the financial institution; providing, to the user device, data describing the one or more metadata attributes and the public digital key associated with the financial institution; receiving, from the user device, respective values for the one or more metadata attributes, the corresponding values having been encrypted by the user device using the public digital key; and storing the encrypted values for the one or more metadata attributes for use in accessing and aggregating financial data describing the financial account.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for receiving, from a user device, a request to include financial data describing a financial account in an interface, the financial account being associated with a particular financial institution; identifying one or more metadata attributes for accessing the financial account associated with the particular financial institution; obtaining a public digital key associated with the financial institution; providing, to the user device, data describing the one or more metadata attributes and the public digital key associated with the financial institution; receiving, from the user device, respective values for the one or more metadata attributes, the corresponding values having been encrypted by the user device using the public digital key; and storing the encrypted values for the one or more metadata attributes for use in accessing and aggregating financial data describing the financial account.