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Cipher communication method and apparatus

A technology of cryptographic communication and encryption device, applied in key distribution, which can solve the problems of increased processing time and decreased data transmission efficiency.

Active Publication Date: 2013-12-04
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the efficiency of data transmission / reception will decrease and the processing time will increase

Method used

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  • Cipher communication method and apparatus
  • Cipher communication method and apparatus
  • Cipher communication method and apparatus

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Embodiment Construction

[0019] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Throughout the disclosure, like parameters refer to like components in the various figures and embodiments of the invention.

[0020] figure 1 A cryptographic communication system according to an embodiment of the present invention is illustrated.

[0021] According to an embodiment, even if there is a difference in the operating time of the devices or a different delay between the devices, both the transmitter and the receiver can select the same key to facilitate seamless cryptographic communication.

[0022] figure 1 The key managem...

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Abstract

A cipher communication method for an encryption apparatus an includes: receiving a second encryption key while performing a cipher communication using a first encryption key; storing encryption key input information on the first and second encryption keys in a static region; copying the stored encryption key input information into a dynamic region; selecting any one of the first and second encryption keys based on the copied encryption key input information and current time information; generating encryption key position information and encryption key selection information on the selected encryption key; and transmitting a cipher text and the encryption key selection information to another encryption apparatus connected to the encryption apparatus through a network such that the another encryption apparatus acquires an encryption key to decrypt the cipher text.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0052651 filed May 17, 2012, which is hereby incorporated by reference in its entirety. technical field [0003] Exemplary embodiments of the present invention relate to key entry and management methods for seamless cryptographic communications; in particular, to a system wherein a transmitter selects an encryption key based on a set The receiver selects the same key when receiving key selection information (one bit), so that the transmitter and receiver can overcome different key input times, time differences between them, and different transmission delay times and perform seamless cryptographic communication. Background technique [0004] For cryptographic communication to work properly, both the transmitter and receiver must communicate using the same key. Furthermore, in order to support cryptographic communication seamlessly, each of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08
CPCH04L63/068H04L63/0428H04L9/12H04L9/14
Inventor 南宅俊安秉浩
Owner ELECTRONICS & TELECOMM RES INST