Patent EA-003230-B1 (EA)
Title: Method for securing safety of electronic information
IPC: H04L9/34
Filed: 1999-03-18
Abstract: 1. A security assurance method for electronic information, characterized in that an electronic information file is divided into a plurality of information elements; the divided information elements are selected and combined with their order changed to produce one or more information blocks in which all of the information elements are included if all of the information blocks are integrated; division extraction data in which formation information of said information elements and the information blocks are recorded is produced; said information blocks and the division extraction data are stored or transmitted; and when said electronic information is to be utilized, all of said information blocks and said division extraction data are collected and the information elements included in said information blocks are re-divided, re-arranged in the correct order and integrated based on said division extraction data to restore the original electronic information file. 2. A security assurance method for electronic information according to claim 1, characterized in that said division extraction data is stored or transmitted separately. 3. A security assurance method for electronic information according to claim 1, characterized in that said division extraction data relating to said information elements is annexed for each of said information elements. 4. A security assurance method for electronic information according to any one of claims 1 to 3, characterized in that said information blocks and the division extraction data are stored into an external storage apparatus to keep the electronic information in said external storage apparatus in security. 5. A security assurance method for electronic information according to any one of claims 1 to 3, characterized in that a plurality of said information blocks are formed, and said blocks are transmitted in a separate state from each other to a recipient together with said division extraction data. 6. A security assurance method for electronic information according to claim 5, characterized in that said division extraction data includes data for confirmation of the originality of said electronic information file. 7. A security assurance method for electronic information according to any one of claims 1 to 6, characterized in that an information element selected from among said information elements is included commonly into a plurality of information blocks, and when the information elements are integrated, the identity of said information elements included commonly in an overlapping relationship in the different information blocks is verified to confirm the security of the information. 8. A security assurance method for electronic information according to any one of claims 5 to 7, characterized in that at least one of said information blocks and said division extraction data is transmitted to the recipient by second transmission means different from the transmission means for the other electronic information. 9. A security assurance method for electronic information according to claim 8, characterized in that a transfer station is interposed in said transmission means or said second transmission means, and a block of the information to be sent by said transmission means is accommodated into an information package together with destination information and sent to said transfer station, which in turn transfers the information block to said recipient based on said destination information.