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Application filed by Shoou-Cherng Su, Ching-Kae LingfiledCriticalShoou-Cherng Su
Priority to TW085115313ApriorityCriticalpatent/TW326608B/en
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Publication of TW326608BpublicationCriticalpatent/TW326608B/en
A method for encryption a document includes the following steps. - Select compressing operation logic to compress document data; - Divide compressed data into several levels for separately encrypting the data of each layer; - Set multi-levels secret code according to requirement during the process of encryption the data in each layer; - Store the machine codes of encryption data, password, decryption and de-compressed data after encryption each level.
TW085115313A1996-12-111996-12-11The security method and apparatus for document
TW326608B
(en)