Id-based encryption and signature method and terminal

A terminal, comprising:

• a processor;
• a storage, accessible to the processor, configured to hold at least part of a received file;
• a receiver configured to receive the received file from a transmitter;
• and
• an identity-based (ID-based) processing module, implemented by the processor, and configured to implement at least one post-reception file security measure with respect to the received file to generate a finished file using a component ID, of one of the transmitter and the receiver, provided in at least a portion of a file identifier of the received file.

An identity (ID)-based encryption and signature method, comprising:

• implementing at least one pre-transmission file security measure with respect to a file, using a component ID, to provide a processed file;
• wherein the at least one pre-transmission file security measure is one of encrypting the file, and putting an electronic signature to the file;
• wherein the component ID is one of a transmitter ID and a receiver ID;
• and
• wherein the implementing of the at least one pre-transmission file security measure is performed using a hardware processor.

A terminal, comprising:

• a processor;
• a storage, accessible to the processor, configured to hold at least part of a file;
• a transmitter configured to transmit the file to a receiver;
• and
• an identity-based (ID-based) processing module, implemented by the processor, and configured to implement a pre-transmission file security measure with respect to the file to provide a processed file;
• wherein the pre-transmission file security measure is implemented using at least a portion of a file identifier of the processed file.

A terminal, comprising:

• a processor;
• a storage, accessible to the processor, configured to hold at least part of a received file;
• a receiver configured to receive the received file from a transmitter;
• and
• an identity-based (ID-based) processing module, implemented by the processor, and configured to implement at least one post-reception file security measure with respect to the received file to provide a finished file;
• wherein the post-reception file security measure is implemented using at least a portion of a file identifier of the received file.