PORTABLE TELEPHONE AND PROGRAM FOR SENDING AND RECEIVING ELECTRONIC MAIL

• US 20070217609A1
• Filed: 02/28/2007
• Published: 09/20/2007
• Est. Priority Date: 03/02/2006
• Status: Abandoned Application

• Current Assignee: Aruze Corp.
• Original Assignee: Aruze Corp.
• Inventors: YOSHIDA, Shuichiro, SUDO, Tomo
• Application Number:
  US11/679,988
• Publication Number:
  US 20070217609A1
• Time in Patent Office: Days
• US Class Current: 380/255
• CPC Class Codes: G06F 21/606 by securing the transmission between two devices or processes
• CPC Class Codes: G06F 21/62 Protecting access to data via a platform, e.g. using keys or access control rules
• CPC Class Codes: G06F 2221/2143 Clearing memory, e.g. to prevent the data from being stolen
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
• CPC Class Codes: H04M 1/72436 for text messaging, e.g. short messaging services [SMS] or e-mails

Abstract

A portable telephone includes a nonvolatile memory, a microcomputer and a liquid crystal panel. The nonvolatile memory stores a plurality of conversion tables employed when an encrypted electronic mail is generated or decrypted. Upon reception of an entry of key information corresponding to any one of the plurality of conversion tables, the microcomputer selects the one conversion table from among the plurality of conversion tables stored in the nonvolatile memory based on the key information. The microcomputer encrypts an electronic mail or decrypts an encrypted electronic mail by referring to the selected conversion table to display the encrypted electronic mail or the decrypted electronic mail on the liquid crystal panel.

Claims

1. A portable telephone comprising:

a memory that stores a plurality of conversion tables which are employed when an encrypted electronic mail is generated or decrypted;

an input device that accepts inputting key information;

a display that displays an electronic mail; and

a processor in communication with the memory, the input device and the display,

the processor operable to;

receive an encrypted electronic mail;

store the received encrypted electronic mail in the memory;

receive an entry of key information corresponding to any one of the plurality of conversion tables stored in the memory;

decide one conversion table from among the plurality of conversion tables stored in memory based on the key information accepted by the input device;

decrypt the encrypted electronic mail stored in the memory to generate a decrypted electronic mail by referring to the decided conversion table;

temporarily store the generated decrypted electronic mail;

control the display of the stored decrypted electronic mail on the display; and

delete the stored decrypted electronic mail according to reception of an entry of instruction to finish the display of the decrypted electronic mail.

2. A portable telephone comprising:

a memory that stores a plurality of conversion tables which are employed when an encrypted electronic mail is generated or decrypted;

an input device that accepts inputting key information; and

a processor in communication with the memory and the input device,

the processor operable to;

store a created electric mail in the memory;

receive an entry of key information corresponding to any one of the plurality of conversion tables stored in the memory;

decide one conversion table from among the plurality of conversion tables stored in the memory based on the key information accepted by the input device;

encrypt the electronic mail stored in the memory to generate an encrypted electronic mail by referring to the decided conversion table;

send the encrypted electronic mail; and

delete the electronic mail corresponding to the encrypted electronic mail from the memory after sending the encrypted electronic mail.

3. A portable telephone readable program for sending and receiving an electronic mail, the portable telephone readable program comprising:

a first portable telephone readable program code for causing the portable telephone to receive an encrypted electronic mail;

a second portable telephone readable program code for causing the portable telephone to store the encrypted electronic mail;

a third portable telephone readable program code for causing the portable telephone to store a plurality of conversion tables which are employed when an encrypted electronic mail is generated or decrypted;

a fourth portable telephone readable program code for causing the portable telephone to receive an entry of key information corresponding to any one of the plurality of conversion tables;

a fifth portable telephone readable program code for causing the portable telephone to decide one conversion table from among the plurality of conversion tables based on the entered key information;

a sixth portable telephone readable program code for causing the portable telephone to decrypt the encrypted electronic mail to generate an decrypted electronic mail by referring to the decided conversion table;

a seventh portable telephone readable program code for causing the portable telephone to temporarily store the generated decrypted electronic mail;

an eighth portable telephone readable program code for causing the portable telephone to display the decrypted electronic mail;

a ninth portable telephone readable program code for causing the portable telephone to control the display of the stored decrypted electronic mail; and

a tenth portable telephone readable program code for causing the portable telephone to delete the stored decrypted electronic mail according to reception of an entry of instruction to finish the display of the decrypted electronic mail.

4. A portable telephone readable program for sending and receiving an electronic mail, the portable telephone readable program comprising:

a first portable telephone readable program code for causing the portable telephone to store a created electric mail;

a second portable telephone readable program code for causing the portable telephone to store a plurality of conversion tables which are employed when an encrypted electronic mail is generated or decrypted;

a third portable telephone readable program code for causing the portable telephone to receive an entry of key information corresponding to any one of the plurality of conversion tables;

a fourth portable telephone readable program code for causing the portable telephone to decide one conversion table from among the plurality of conversion tables based on the entered key information;

a fifth portable telephone readable program code for causing the portable telephone to encrypt the electronic mail to generate an encrypted electronic mail by referring to the decided conversion table;

a sixth portable telephone readable program code for causing the portable telephone to send the generated encrypted electronic mail; and

a seventh portable telephone readable program code for causing the portable telephone to delete the electronic mail corresponding to the encrypted electronic mail after sending the encrypted electronic mail.