Birch, Stewart, Kolasch & Birch, LLP
Dual-channel electronic signature system using image codes and related computer program product
A dual-channel electronic signature system is disclosed, having a signature verification server, a signature requester device, and a hand-held device. The signature requester device calculates a characteristic value related to content of a target document, encodes the characteristic value and a destination message to generate a first graph, and outputs the first graph The hand-held device captures and decodes an image of the first graph to obtain the characteristic value, performs an electronic signature operation on the characteristic value to generate a signature data, encodes the signature data to generate a second graph, and transmits the second graph to a destination network address. If the signature data contained in the second graph passes a verification procedure of the signature verification server, the signature verification server transmits a verification graph corresponding to the second graph to the signature requester device.
JRSYS International Corp.
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inventional inventional inventional inventional
Tai-Hung Po-Yueh Tsung-Yu Jia-Hong Jiann-Dong Yan-Yi
Lin Hung Chang Chen Wu Shen