Cryptography – Key management – Key distribution
Reexamination Certificate
2005-12-13
2005-12-13
Barron, Jr., Gilberto (Department: 2132)
Cryptography
Key management
Key distribution
C380S044000, C380S262000, C380S247000, C380S278000, C713S171000, C713S193000
Reexamination Certificate
active
06975730
ABSTRACT:
A first-key signal representative of a first key is generated from first-key base information being a base of the first key. Contents information is encrypted into encryption-resultant contents information in response to the first-key signal. A second-key signal representative of a second key is generated on the basis of initial-value information of a given initial value according to a predetermined key generation algorithm. The first-key base information is encrypted into encryption-resultant first-key base information in response to the second-key signal. The encryption-resultant contents information, the encryption-resultant first-key base information, the initial-value information, and algorithm identification information for identifying the predetermined key generation algorithm are transmitted or recorded.
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Higurashi Seiji
Inoha Wataru
Kuroiwa Toshio
Sugahara Takayuki
Ueda Kenjiro
Barron Jr. Gilberto
Lemma Samson B.
Victor Company of Japan Ltd.
Woo Louis
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