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Patent applications and USPTO patent grants for Hanaoka; Yumiko.The latest application filed is for "key-updating method, encryption processing method, key-insulated cryptosystem and terminal device".
Patent | Date |
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Key-updating method, encryption processing method, key-insulated cryptosystem and terminal device Grant 8,270,615 - Hanaoka September 18, 2 | 2012-09-18 |
Key-updating method, encryption processing method, key-insulated cryptosystem and terminal device Grant 7,826,619 - Hanaoka November 2, 2 | 2010-11-02 |
Key-updating Method, Encryption Processing Method, Key-insulated Cryptosystem And Terminal Device App 20100241860 - HANAOKA; Yumiko | 2010-09-23 |
Key-updating method, encryption processing method, key-insulated cryptosystem and terminal device App 20070230705 - Hanaoka; Yumiko | 2007-10-04 |
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