Abstract: A data-transmitting method of a handheld electronic device includes: detecting movement of a first handheld electronic device to generate a first motion data; receiving a broadcast signal, wherein the broadcast signal carries a source device data and a second motion data; comparing the first motion data with the second motion data; establishing a communication link to a second handheld electronic device according to the source device data when the first motion data matches the second motion data; and receiving a specific data from the second handheld electronic device or sending the specific data to the second handheld electronic device.

Abstract: A data-transmitting method of a handheld electronic device includes: detecting movement of a first handheld electronic device to generate a first motion data; receiving a broadcast signal, wherein the broadcast signal carries a source device data and a second motion data; comparing the first motion data with the second motion data; establishing a communication link to a second handheld electronic device according to the source device data when the first motion data matches the second motion data; and receiving a specific data from the second handheld electronic device or sending the specific data to the second handheld electronic device.

Abstract: A verification code generation method is performed in an electronic device which is for performing encoding to generate a video/audio stream having multiple data segments. The verification code generation method includes the following steps. Each time one of the data segments is generated by the encoding, a first-level checksum associated with the data segment is generated, and the first-level checksum is recorded in an accompanying verification file. At an interval of every N data segments of the data segments, a second-level checksum is generated for W consecutive first-level checksums, and the second-level checksum is recorded in the accompanying verification file, such that a subsequent verification method can quickly verify integrity of a part of data according to the accompanying verification file. Wherein, W is a positive integer greater than or equal to 2, N is a positive integer greater than 0 and smaller or equal to W.

Abstract: A verification code generation method is performed in an electronic device which is for performing encoding to generate a video/audio stream having multiple data segments. The verification code generation method includes the following steps. Each time one of the data segments is generated by the encoding, a first-level checksum associated with the data segment is generated, and the first-level checksum is recorded in an accompanying verification file. At an interval of every N data segments of the data segments, a second-level checksum is generated for W consecutive first-level checksums, and the second-level checksum is recorded in the accompanying verification file, such that a subsequent verification method can quickly verify integrity of a part of data according to the accompanying verification file. Wherein, W is a positive integer greater than or equal to 2, N is a positive integer greater than 0 and smaller or equal to W.

Abstract: A method for importing and exporting configurations includes: generating a public key and a private key of a manufacturer; generating a certificate of the manufacturer; storing the certificate of the manufacturer in each of products; and signing a public key by using the private key of the manufacturer to generate a signature of the manufacturer; wherein the products receive the certificate of the manufacturer, at least one configuration and a signature of a customer which is generated by signing the at least one configuration by using a private key of the customer, as well as each products verifies the signature of the manufacturer in accordance with the stored certificate of the manufacturer, verifies the signature of the customer in accordance with the certificate of the manufacturer, and applies the at least one configuration when authenticated. A system for importing and exporting configurations is also provided.

Abstract: A method for importing and exporting configurations includes: generating a public key and a private key of a manufacturer; generating a certificate of the manufacturer; storing the certificate of the manufacturer in each of products; and signing a public key by using the private key of the manufacturer to generate a signature of the manufacturer; wherein the products receive the certificate of the manufacturer, at least one configuration and a signature of a customer which is generated by signing the at least one configuration by using a private key of the customer, as well as each products verifies the signature of the manufacturer in accordance with the stored certificate of the manufacturer, verifies the signature of the customer in accordance with the certificate of the manufacturer, and applies the at least one configuration when authenticated. A system for importing and exporting configurations is also provided.

Abstract: A method for processing and verifying remote dynamic data is provided. The method includes providing a radix tree structure having N levels, obtaining and recording N initial values for representing the empty radix tree structure, wherein all nodes at the same level are assigned an identical initial value. When performing a data processing operation to the radix tree structure, determining a first leaf node and calculating and recording the value of each node in a shortest path from the first leaf node to the root node. When performing a verification of a specific data, obtaining a second leaf node corresponding to the specific data, a sibling node of each node in a shortest path from the second leaf node to the root node, and generating a verification result according to a digital signature for verifying the root node, the value of each obtained sibling node, and the specific data.

Abstract: A method for processing and verifying remote dynamic data is provided. The method includes providing a radix tree structure having N levels, obtaining and recording N initial values for representing the empty radix tree structure, wherein all nodes at the same level are assigned an identical initial value. When performing a data processing operation to the radix tree structure, determining a first leaf node and calculating and recording the value of each node in a shortest path from the first leaf node to the root node. When performing a verification of a specific data, obtaining a second leaf node corresponding to the specific data, a sibling node of each node in a shortest path from the second leaf node to the root node, and generating a verification result according to a digital signature for verifying the root node, the value of each obtained sibling node, and the specific data.