Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2007-12-11
2007-12-11
Moise, Emmanuel L. (Department: 2137)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C382S276000, C382S100000, C713S181000, C726S030000, C705S075000, C380S200000
Reexamination Certificate
active
10320388
ABSTRACT:
An image verification system includes an image generation apparatus and a first verification apparatus. The image generation apparatus (a) generates image data, (b) generates a hash value from the image data, and (c) generates first verification data from the hash value using a common key cryptography and not using a public key cryptography. The first verification apparatus (a) receives the hash value and the first verification data, (b) verifies, using the received hash value, the received first verification data and the common key cryptography, whether the image data is altered, and (c) generates second verification data from the hash value using the public key cryptography, if the first verification apparatus verifies that the image data is not altered.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Gelagay Shewaye
Moise Emmanuel L.
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