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Information processing apparatus, information processing method, information processing system and recording medium

A technology for predetermined processing and storage devices, applied in recording signal processing, safety communication devices, transmission systems, etc.

Inactive Publication Date: 2003-10-22
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In this method, however, all electronic equipment blocks used as sources and receivers for sending and receiving information, respectively, must maintain a consistent function f in strict confidence

Method used

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  • Information processing apparatus, information processing method, information processing system and recording medium
  • Information processing apparatus, information processing method, information processing system and recording medium
  • Information processing apparatus, information processing method, information processing system and recording medium

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0055] figure 1 is a block diagram of a typical configuration of the information processing system of the present invention. As shown in the figure, in this configuration, a DVD player 1, a personal computer 2, a magneto-optical disc device 3, a data broadcasting / receiving device 4, a monitor 5 and a television set 6 are connected to each other through an IEEE 1394 serial bus 11.

[0056] figure 2 yes figure 1 A detailed typical configuration of a DVD player 1, a personal computer 2 and a magneto-optical disk device 3 in the information processing system is shown. The DVD player 1 includes a CPU 21 , a ROM unit 22 , a RAM unit 23 , an operation unit 24 , a drive 25 , a 1394 interface unit 26 and an EEPROM unit 27 interconnected via an internal bus 28 . As shown in the figure, the DVD player 1 is connected to the 1394 serial bus 11 through the 1394 interface unit 26 . The CPU 21 executes various types of processing by executing programs stored in the ROM unit 22 . The R...

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Abstract

An information processing apparatus and an information processing method are capable of preventing information from being copied illegally. A hash function and a service key are stored in advance in an EEPROM of a DVD player serving as a source. In an EEPROM of a personal computer serving as a sink, its ID and a license key are stored beforehand. The DVD player requests the PC to transmit the ID. The DVD player then applies the hash function to data resulting from concatenation of the ID with the service key to generate a license key. Subsequently, the DVD player generates a source side common session key and encrypts the session key by using the generated license key. Then, the DVD player transmits the encrypted source side common session key to the PC. The PC decrypts the encrypted source side common session key by using the license key stored in its EEPROM to produce a sink side common session key which has a value equal to that of the source side common session key.

Description

technical field [0001] The present invention relates to an information processing device, an information processing method, an information processing system and a recording medium. In particular, the present invention relates to an information processing device, an information processing method, an information processing system, and a recording medium that allow data to be exchanged with a high degree of secrecy. Background technique [0002] In recent years, a system has been proposed which includes a plurality of electronic equipment blocks such as AV equipment and personal computers interconnected by a typical IEEE 1394 serial bus, in which data can be exchanged among the equipment blocks. [0003] In this system, for example, an ordinary user can utilize a DVD (Digital Video Disc) machine to replay movie information and transmit the movie information to a monitor through a 1394 serial line and display it on the monitor. Generally, the processing by the user for displayi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/14G06F1/00G06F21/10G06F21/44G06F21/60G06F21/62G11B19/04G11B19/12G11B20/00H04L9/08H04L9/10H04L9/32H04L12/40H04L12/64
CPCG11B19/04G06F21/445G11B20/00086G06F2211/007G06F21/10G11B20/0021G11B19/12G06F2221/2107G06F2221/2103H04L12/40117H04L12/40104G06F15/16
Inventor 石黑隆二大泽义知刑部义雄佐藤真嶋久登浅野智之
Owner SONY CORP