Electrical computers and digital processing systems: support – Data processing protection using cryptography – Tamper resistant
Reexamination Certificate
2007-02-20
2007-02-20
Moazzami, Nasser (Department: 2136)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Tamper resistant
C713S189000
Reexamination Certificate
active
10069112
ABSTRACT:
A memory card performs decryption processing to extract a session key from data applied from a server to a data bus over a cellular phone network. An encryption processing unit encrypts a public encryption key of memory card based on a session key, and applies the same to the server via data bus. A register receives and stores data such as a decrypted license ID and a user ID from the server, and a memory receives and stores encrypted content data applied from a data bus and encrypted with a license key.
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Anazawa Takeaki
Furuta Shigeki
Hasebe Takayuki
Hatakeyama Takahisa
Hatanaka Masayuki
Fujitsu Limited
Moazzami Nasser
Parthasarathy Pramila
Sanyo Electric Co,. Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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