Unlock instant, AI-driven research and patent intelligence for your innovation.

Document managing device

A file management and file technology, applied in the direction of secure communication devices, computer security devices, electrical components, etc., can solve the problem of users remembering authentication passwords, etc.

Inactive Publication Date: 2007-09-05
PANASONIC CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to the above techniques, there is still the difficulty that the user must remember the authentication password

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Document managing device
  • Document managing device
  • Document managing device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] The following is an explanation of the file management apparatus related to the first embodiment of the present invention.

[0034] FIG. 1 shows the appearance of the file management device 10 . As shown in the figure, the file management apparatus 10 is a computer system basically including a microprocessor, ROM (Read Only Memory), RAM (Random Access Memory), hard disk portion, display, and keyboard. The RAM or the hard disk part stores computer programs. The functions of the file management device 10 are realized by a microprocessor operating according to the computer program. A key storage medium 20 in which key information is stored in advance is installed in the file management device 10 .

[0035] 1.1 Structure of file management device 10 and key storage medium 20

[0036] The following is an explanation of the structures of the file management device 10 and the key storage medium 20 .

[0037] As shown in FIG. 2 , the file management device 10 includes a pas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A password registration unit encrypts key information using an input password, and stores the generated encrypted key as a file into a computer. A file encryption unit generates a file key arbitrarily, encrypts the file key using the key information, encrypts a plaintext using the file key to generate a ciphertext, and stores an encrypted file including the encrypted file key in its header part and the ciphertext in its data part. A file decryption unit decrypts the encrypted file key using the key information to obtain a file key, or receives an input of a password, decrypts the encrypted key using the password to obtain key information, and decrypts the encrypted file key using the key information to obtain a file key. The file decryption unit then decrypts the ciphertext using the obtained file key.

Description

technical field [0001] The present invention relates to a file management device that encrypts and stores information to prevent third parties from knowing its contents. Background technique [0002] With the widespread use of computers, techniques for storing information after encrypting it have been commonly used to prevent third parties from knowing the contents of the information. [0003] Japanese Laid-Open Patent Publication H9-204330 discloses a technology for encrypting files in a computer, which uses an encryption key and stores encrypted files in a specific encrypted information storage area, allowing only specific users to use registered An authentication password to access the encrypted information storage area. Each specific user remembers an authentication password. When the user enters the authentication password, the decryption key is automatically selected to decrypt the encrypted file. Here, the authentication password may include a character string or n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/14G06F12/16H04L9/00G06F1/00G06F21/62
CPCG06F21/6218
Inventor 松崎枣江村里志稻垣悟
Owner PANASONIC CORP