Text security method
OwnerYoung Sun HEAinventor
Life of this patent
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Abstract
Disclosed herein is a text security method. The text security method encrypts both a font and a text constituting a text document in the same manner so that the encrypted text can be correctly viewed only when the encrypted font is provided. The text is encrypted by changing, in a regular manner, positions of intrinsic character images or intrinsic codes of the text within different code areas, and the font is encrypted by changing, in the same regular manner, positions of intrinsic character images or intrinsic codes of glyphs of the font corresponding to the text within different font areas.
Claims20
A text security method comprising:
- encrypting an original text of a text document and a font corresponding to the text in the same manner;
- and
- restoring the encrypted text to the original text using the encrypted font.
A text security method in a network information security system, the network information security system comprising a main server storing and managing information about a document including a text document input by a user terminal and information about a user, and a security management server performing a user verification operation, the method comprising:
- generating an input conversion key based on user verification information in the security management server, in response to a request from the user terminal to store an original text of the text document, followed by encrypting the original text using the input conversion key, requesting that the main server store the encrypted text, and managing the user information and the input conversion key;
- generating an output conversion key using user information corresponding to the stored text and the user verification information and the input conversion key, in response to a request from the user terminal to transmit the encrypted text stored in the main server, followed by encrypting the text and a font corresponding to the text using the input conversion key and transmitting the encrypted text and the encrypted font to the user terminal;
- and
- restoring the encrypted text to the original text by applying the encrypted text to the encrypted font in the user terminal receiving the encrypted text and the encrypted font.
A text security method in a web page security system of a web server, the method comprising:
- generating an input conversion key in response to a request from a manager terminal or a user terminal for creation, revision or editing of a web page, followed by encrypting an original text of the web page using the input conversion key, creating the web page with the encrypted text, and storing and managing information about the web page and the input conversion key;
- generating an output conversion key using the input conversion key corresponding to the web page in response to a request from the user terminal for the web page, followed by encrypting a font corresponding to the encrypted text of the web page using the output conversion key, and transmitting the web page and the encrypted font to the user terminal;
- and
- restoring the encrypted text of the web page to the original text by applying the encrypted text of the web page to the encrypted font in the user terminal receiving the web page and the encrypted font.
A text security method in a messenger security system, comprising:
- providing different text conversion keys from a messenger management server to respective messengers of user terminals when the messengers request conversation initiation;
- providing a converted font from the messenger management server to each of the messengers of the user terminals requesting the conversation initiation, the converted font corresponding to one of the different text conversion keys transmitted to the opposite user terminal;
- displaying a text, which is input by a user, on a display in the messenger of the user terminal, followed by encrypting the text using the text conversion key from the messenger management server, and transmitting the encrypted text;
- and
- decrypting an encrypted text, transmitted from the opposite user terminal, using the converted font from the messenger management server and displaying the decrypted text on the display.
A text security method in a messenger security system, comprising:
- providing different text conversion keys from a messenger management server to messengers of user terminals when one of the messengers requests conversation initiation;
- providing different converted fonts corresponding to the text conversion keys from the messenger management server to the messengers of the user terminals;
- encrypting a text, which is input by a user, in the messenger of the user terminal using the text conversion key from the messenger management server, followed by transmitting the encrypted text;
- and
- decrypting a text, which is input by the user and encrypted, using a converted font corresponding to a text conversion key transmitted to the user and displaying the decrypted text on a display, or decrypting an encrypted text, which is transmitted from the opposite user, using a converted font corresponding to a text conversion key transmitted to the opposite user and displaying the decrypted text on a display.
A text security method in an e-mail security system, comprising:
- when a mail sender inputs a text using one of standardized fonts in a mail editor and requests to transfer a mail comprising the text, encrypting the text and a font corresponding to the text in the same manner in a mail transmitting server and transmitting the mail comprising the encrypted text and the encrypted font;
- and
- decrypting the encrypted text of the mail using the encrypted font in a mail receiving server receiving the mail in response to a request from a mail receiver to read the mail, followed by providing the decrypted text to the mail receiver.
A text security method in a text editor, comprising:
- requesting, by the text editor, to input an input conversion key in response to a request for storing a text document edited in the text editor;
- converting an original text of the text document using the input conversion key and storing the converted text, if the input conversion key is input;
- requesting, by the text editor, to input an output conversion key in response to a request for loading the stored text;
- and
- converting a normal font corresponding to the output conversion key, followed by restoring the converted text by applying the converted text to the converted font, and outputting the restored text, if the output conversion key is input.
Dependencies are inferred from the claim text.