Abstract: A dynamic spectrum audio encryption and decryption device is connected to a cell phone. The dynamic spectrum audio encryption and decryption device generates a communicating signal and encrypts the communicating signal so as to send to the cell phone. A remote cell phone received the communicating signal and sent to a corresponding remote dynamic spectrum audio encryption and decryption device and decrypts the communicating signal to generate a vocal voice output.

Abstract: An encrypted storage device for personal information has a control module, a plug and play interface and a storage unit. The Control module has an encryption module and a processing module electrically connected the encryption module and driving the encryption module to perform an encryption/decryption operation. The plug and play interface is electrically connected to the Control module and is adapted to connect with a computer to transmit information to the Control module. The storage unit is electrically connected to the Control module and has a public data area and an encryption area. The public data area has at least one application. The encryption area is used to store the encryption algorithm information, and the encryption algorithm information can be read after identity authenticating and decrypting.