Abstract: A software protection method includes decrypting an encrypted executable file by a processor, and the steps of decrypting include the following steps. A linking instruction is executed in a first execution environment; based on the linking instruction, a signature corresponding to the encrypted executable file is generated in the first execution environment; based on the signature and a hash table, a decryption algorithm is performed and a key is generated in the first execution environment; and the key is transmitted from the first execution environment to a second execution environment that is different from the first execution environment. The encrypted executable file is in the second execution environment. A software protection system is also disclosed herein.

Abstract: A software protection method includes decrypting an encrypted executable file by a processor, and the steps of decrypting include the following steps. A linking instruction is executed in a first execution environment; based on the linking instruction, a signature corresponding to the encrypted executable file is generated in the first execution environment; based on the signature and a hash table, a decryption algorithm is performed and a key is generated in the first execution environment; and the key is transmitted from the first execution environment to a second execution environment that is different from the first execution environment. The encrypted executable file is in the second execution environment. A software protection system is also disclosed herein.

Abstract: A transmission system includes a first security unit coupling to application ends, a second security unit coupling to a user end, and a server. The server sends a first attribute key to the first security unit based on attributes of the application ends and sends a second attribute key to the second security unit based on attributes of the user end. To enable one application end, the first security unit encrypts a session key with the first attribute key, opens a socket, and sends the encrypted session key to the server. When the second security unit receives a request for the application end, the server sends the encrypted session key to the second security unit. The second security unit decrypts the encrypted session key with the second attribute key and connects to the socket. The second security unit interchanges information with the first security unit via the session key.

Abstract: A transmission system includes a first security unit coupling to application ends, a second security unit coupling to a user end, and a server. The server sends a first attribute key to the first security unit based on attributes of the application ends and sends a second attribute key to the second security unit based on attributes of the user end. To enable one application end, the first security unit encrypts a session key with the first attribute key, opens a socket, and sends the encrypted session key to the server. When the second security unit receives a request for the application end, the server sends the encrypted session key to the second security unit. The second security unit decrypts the encrypted session key with the second attribute key and connects to the socket. The second security unit interchanges information with the first security unit via the session key.

Abstract: A data securing method, a data securing system and a data carrier are provided. The data securing method comprises an encryption procedure for encrypting a data or performing an authentication procedure. The encryption procedure includes the following steps. A first personal identification number is obtained. A first random number is generated. A first key is obtained according to the first personal identification number and the first random number. A first secure checksum is obtained according to the first key. The first random number and part of the first secure checksum are stored. The data is encrypted. The authentication procedure is performed according to the first key.

Abstract: An integrated circuit film comprising a circuit board and a control circuit is provided. The circuit board has an IC-installation part and a contact part and having a first surface and a second surface opposite to the first surface. The contact part comprises a first set of pads and a second set of pads. The first set of pads are located on the first surface for communicating with an electrical communication device. The second set of pads are located on the second surface for communicating with a smart card. The control circuit is mounted on the IC-installation part for communicating with the electrical communication device through one of the first set of pads configured in accordance with a single wire protocol (SWP), a communication protocol.

Abstract: A data securing method, a data securing system and a data carrier are provided. The data securing method comprises an encryption procedure for encrypting a data or performing an authentication procedure. The encryption procedure includes the following steps. A first personal identification number is obtained. A first random number is generated. A first key is obtained according to the first personal identification number and the first random number. A first secure checksum is obtained according to the first key. The first random number and part of the first secure checksum are stored. The data is encrypted. The authentication procedure is performed according to the first key.

Abstract: An integrated circuit film comprising a circuit board and a control circuit is provided. The circuit board has an IC-installation part and a contact part and having a first surface and a second surface opposite to the first surface. The contact part comprises a first set of pads and a second set of pads. The first set of pads are located on the first surface for communicating with an electrical communication device. The second set of pads are located on the second surface for communicating with a smart card. The control circuit is mounted on the IC-installation part for communicating with the electrical communication device through one of the first set of pads configured in accordance with a single wire protocol (SWP), a communication protocol.