Method and system for managing information on mobile devices

A non-transitory storage medium recorded thereon a program that, when executed, causes a processor to execute a method for protecting information, the method comprising the steps of:

• obtaining a predetermined portion of asymmetric information upon an input of the asymmetric information in the mobile device;
• generating an identifier by using a first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating a first salt that is used as an algorithm input by the first generating algorithm and the second generating algorithm;
• generating an encryption key by using a second generating algorithm different from the first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating ciphered information by using an encryption algorithm that uses the encryption key and the information as algorithm inputs;
• associating the identifier with the ciphered information;
• and
• storing the ciphered information as associated with the identifier
• wherein the asymmetric information comprises asymmetric data associated with a file and
• wherein the asymmetric information comprises asymmetric information selected from contact information, a file name, a telephone number, a product ID of the mobile device, a card number of the mobile device;
• an identification number, a name, or asymmetric data associated with a file, and
• the predetermined portion includes the asymmetric information.

A mobile device that implements an information protecting method, the information protecting method including:

• obtaining a predetermined portion of asymmetric information upon an input of the asymmetric information in the mobile device;
• generating an identifier by using a first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating a first salt that is used as an algorithm input by the first generating algorithm and the second generating algorithm;
• generating an encryption key by using a second generating algorithm different from the first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating ciphered information by using an encryption algorithm that uses the encryption key and the information as algorithm inputs;
• associating the identifier with the ciphered information;
• and
• storing the ciphered information as associated with the identifier;
• wherein the asymmetric information comprises asymmetric information asymmetric data associated with a file, and
• wherein the asymmetric information comprises asymmetric information selected from contact information, a file name, a telephone number, a product ID of the mobile device, a card number of the mobile device;
• an identification number, a name, or asymmetric data associated with a file, and
• the predetermined portion includes the asymmetric information.

A system that implements an information protecting method, the information protecting method including:

• obtaining a predetermined portion of asymmetric information upon an input of the asymmetric information in the mobile device;
• generating an identifier by using a first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating a first salt that is used as an algorithm input by the first generating algorithm and the second generating algorithm;
• generating an encryption key by using a second generating algorithm different from the first generating algorithm that uses the predetermined portion of the asymmetric information as an algorithm input;
• generating ciphered information by using an encryption algorithm that uses the encryption key and the information as algorithm inputs;
• associating the identifier with the ciphered information;
• and
• storing the ciphered information as associated with the identifier
• wherein the asymmetric information comprises asymmetric information asymmetric data associated with a file, and
• wherein the asymmetric information comprises asymmetric information selected from contact information, a file name, a telephone number, a product ID of the mobile device, a card number of the mobile device;
• an identification number, a name, or asymmetric data associated with a file, and
• the predetermined portion includes the asymmetric information.