Cryptography – Key management
Reexamination Certificate
2003-10-08
2008-07-01
Barron, Jr., Gilberto (Department: 2132)
Cryptography
Key management
C380S030000, C380S046000, C713S193000
Reexamination Certificate
active
07394902
ABSTRACT:
The present invention pertains to a transmission apparatus for generating an encrypted text by encrypting a plaintext, which includes a parameter storage unit for storing a random parameter (the number of terms whose coefficients indicate 1) adapted to an encryption key and an encryption apparatus and a decryption apparatus; an encryption unit for generating, from the plaintext, the encrypted text using the encryption key and the random parameter stored in the parameter storage unit, complying with an encryption algorithm based on the NTRU™ method; and a key updating unit for updating the random parameter stored in the parameter storage unit and the encryption key, as time passes.
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Futa Yuichi
Ohmori Motoji
Tatebayashi Makoto
Yamamichi Masato
Barron Jr. Gilberto
Lashley Laurel
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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