Cryptography – Communication system using cryptography – Pseudo-random sequence scrambling
Reexamination Certificate
2006-06-20
2006-06-20
Moise, Emmanuel L. (Department: 2137)
Cryptography
Communication system using cryptography
Pseudo-random sequence scrambling
C380S262000, C380S281000, C380S283000, C380S044000, C380S046000, C713S171000
Reexamination Certificate
active
07065214
ABSTRACT:
An information processing apparatus and an information processing method capable of preventing information from being copied illegally. where a hash function and a service key are stored in advance in an EEPROM of a DVD player serving as a source. In an BEPROM of a personal computer (PC) serving as a sink, on the other hand, 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 lID with the service key to generate a license key (=hash (ID ∥service_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.
REFERENCES:
patent: 4549075 (1985-10-01), Saada et al.
patent: 4720859 (1988-01-01), Aaro et al.
patent: 4799061 (1989-01-01), Abraham et al.
patent: 4866707 (1989-09-01), Marshall et al.
patent: 5117458 (1992-05-01), Takaragi et al.
patent: 5148479 (1992-09-01), Bird et al.
patent: 5225664 (1993-07-01), Iijima
patent: 5535276 (1996-07-01), Ganesan
patent: 5883958 (1999-03-01), Ishiguro et al.
patent: 6119227 (2000-09-01), Mao
patent: 6151676 (2000-11-01), Cuccia et al.
patent: 6445797 (2002-09-01), McGough
Asano Tomoyuki
Ishiguro Ryuji
Nakano Takehiko
Osakabe Yoshio
Osawa Yoshitomo
Callahan Paul
Moise Emmanuel L.
Sony Corporation
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