# US 7,610,338 B2 · Communication contents certification system, communication contents certification apparatus, communication contents certification method, and recording medium

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- Number: US 7,610,338 B2
- Document ID: US7610338B2
- Status: Granted
- Kind: B2
- Application number: 09/819,244
- Filed: 2001-03-28
- Published: 2002-02-07
- Granted: 2009-10-27
- Earliest claimed: 2000-03-31
- Assignees: Sony Corporation
- Inventors: Satoru Ueda
- Web page: https://patentgrep.com/patent/US7610338B2

## CPC

- H04L 63/083: {using passwords (cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226)}
- H04L 63/123: {received data contents, e.g. message integrity}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

The contents of a communicated electronic mail are certificated, and the certification of a transaction contents carried out by the electronic mail is sufficiently secured. A transmitted electronic mail is transmitted to a destination by way of the communication contents certification apparatus, and the transmitted electronic mail is stored in a communication contents storage means when it is transmitted by means of the communication contents certification apparatus.

## Claims

### Claim 1

A communication contents certification method for certifying contents of an electronic mail communicated between two or more party communication terminals and two or more attorney communication terminals through a network, the communication contents certification method comprising:
storing, at a contents certification apparatus, a personal ID and password, issued to each party and utilized for a particular transaction between a first party and a second party
transmitting, from a communication terminal of the first party, an electronic mail to the contents certification apparatus;
confirming the first party is authentic, at the contents certification apparatus, based on the personal ID and password of the first party;
transmitting, from the contents certification apparatus, to a communication terminal of a first attorney, the electronic mail;
adding first comment data to the email at the communication terminal of the first attorney;
transmitting, from the communication terminal of the first attorney to the contents certification apparatus, the email with the first comment data;
confirming the first attorney is authentic, at the contents certification apparatus, based on the personal ID and password of the first attorney;
transmitting, from the contents certification apparatus, the email with the first comment data, to the communication terminal of the first party;
inserting first message data, at the communication terminal of the first party, in the email, the first message data being based on the first comment data provided by the first attorney;
transmitting, from a communication terminal of the first party, the electronic mail with the first message data, to the contents certification apparatus;
confirming the first party is authentic, at the contents certification apparatus, based on the personal ID and password of the first party;
transmitting, from the contents communication apparatus, the electronic mail with the first message data, to a communication terminal of the second party;
adding second message data to the email at the communication terminal of the second party;
transmitting, from the communication terminal of the second party to the contents certification apparatus, the email with the second message data;
confirming the second party is authentic, at the contents certification apparatus, based on the personal ID and password of the second party;
transmitting, from the contents certification apparatus, the email with the second message data, to a communication terminal of a second attorney;
inserting second comment data, at the communication terminal of the second attorney, in the email based on the second message data;
transmitting, from a communication terminal of the second attorney, the electronic mail with the second comment data, to the contents certification apparatus;
confirming the second attorney is authentic, at the contents certification apparatus, based on the personal ID and password of the second attorney;
transmitting, from the certification apparatus to the communication terminal of the second party, the electronic mail including the second comment data;
transmitting, from the communication terminal of the second party, the electronic mail including the second comment data, to the contents certification apparatus;
confirming the second party is authentic, at the contents certification apparatus, based on the personal ID and password of the second party;
transmitting, from the certification apparatus to the communication terminal of the first party, the electronic mail including the second comment data.

### Claim 2 (depends on 1)

The communication contents certification method as claimed in claim 1,
wherein the communication terminal of the first party includes a GUI (Graphic User Interface) having a party button display section for selecting electronic mail communication with the communication terminal of the second party and an attorney button display section for selecting electronic mail communication with the communication terminal of the first attorney,
wherein the communication terminal of the first party is adapted to transmit the electronic mail as a function of input to the GUI.

### Claim 3 (depends on 1)

The communication contents certification method as claimed in claim 1,
wherein the contents of the electronic mail relate to a contract matter between the first party and the second party.

### Claim 4 (depends on 1)

The communication contents certification method as claimed in claim 1,
wherein the electronic mail is encrypted.

### Claim 5 (depends on 1)

The communication contents certification method as claimed in claim 1,
wherein the communication contents certification method further comprises:
identifying a party using the party communication terminal from which the electronic mail was transmitted.