JPH04127725A - Display pager - Google Patents

Abstract

PURPOSE:To improve secrecy for the contents of a message data in a call data by ciphering and transmitting the message data. CONSTITUTION:This device is composed of a reception part (RCV) 1, comparison part (CMP) 2, check part (CHK) 3, cipher algorithm (ALG) 4, display part (DSP) 5, identification number hold part (IDN) 6 and cipher key hold part (KC) 7. The message data is ciphered, deciphered and outputted so as not to generate error in the message data and therefore, the data to be transmitted is ciphered. Thus, the display pager improving secrecy for the contents of the message data in the call data can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a paging system, and particularly to a display pager.

[Prior Art] A display pager of a conventional paging system will be described with reference to the drawings. FIG. 3 is a block diagram of a conventional display pager, and FIG. 4 is a diagram showing data strings received by the conventional display pager.

A conventional display pager includes a receiving section 1 that receives call data transmitted from a wireless base station, and an identification number holding section 6 that holds a unique number assigned to the pager.
Then, the comparison unit 2 compares the identification number ID in the received data string shown in FIG. The system is equipped with an inspection section 3 that uses a check data CD to inspect whether there are any errors in the contents of the message in the received data string, and a display section 5 that displays the message data that is found to be normal as a result of the inspection. , which performed operations from receiving call data to displaying messages.

[Problems to be Solved by the Invention] The above-mentioned conventional display pager has a problem with identifying the identification number of the call data because the message data in the call data transmitted from the wireless base station is not protected by encryption or the like. Since the message data can be displayed only by checking and confirming that the message data is normalized, there is a drawback that the confidentiality of the contents of the message data in the call data is low.

SUMMARY OF THE INVENTION An object of the present invention is to provide a display pager in which the contents of message data in call data can be kept confidential.

[Means for Solving the Problem] In order to achieve the above object, the display pager according to the present invention includes a receiving section, a comparing section, a testing section,
A display pager for a paging system having an encryption/decryption section and a display section, wherein the reception section receives data transmitted from a wireless base station, and the comparison section performs pager identification in the received data. The number is compared with the pager identification number held in the display pager.The inspection section inspects that there are no errors in the contents of the encrypted message in the received data, and the decryption section inspects the received data. The encrypted message in the data is decrypted using the encryption key held in the display pager, and the display section displays the decrypted message.

[Operation] Message data is encrypted, and if there is no error in the message data, it is decrypted and output.

As a result, the data to be transmitted is encrypted, and the confidentiality of the contents of the message data is improved.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a display pager of the present invention, and FIG. 2 is a diagram showing data strings received by the display pager of the present invention.

In the figure, the display pager of the present invention includes a receiving section l that receives call data transmitted from a wireless base station, an identification number holding section 6 that holds a unique number assigned to the pager, and a receiving section l. The identification number ID in the received data string shown in FIG. 2 received by the identification number holding unit 6
a comparison unit 2 that compares the identification numbers from the received data, and an inspection unit 3 that uses a check data CD to verify that there are no errors in the content of the encrypted message in the received data string if the comparison result side identification numbers match. , an encryption key holding unit 7 that holds an encryption key KC for decryption individually assigned to the pager, and an inspection unit 3 that encrypts the encrypted message data in the received data string if the inspection results are normal. It has an encryption algorithm 4 as an encryption/decryption means for decrypting using the encryption key KC in the key holding unit 7. The encrypted message data is data encrypted at the base station using the message data or the encryption key KO in a manner similar to encryption algorithm 4, and the message encrypted using encryption algorithm 4 using encryption mKC in the display pager. It becomes data. The message is displayed by a display section 5 that displays message data.

Note that the identification number in the identification number holding unit 6 and the encryption key holding unit 7
The encryption key KC in the pager is individually assigned to each pager, and its contents cannot be known to a third party. Similarly, cryptographic algorithm 4 is commonly used in paging systems, but its contents are also prevented from being known to third parties.

[Effects of the Invention] As explained above, the present invention encrypts and transmits message data, thereby increasing the confidentiality of the contents of the message data in the call data, and providing a display paging system with excellent information confidentiality. This has the effect of allowing the construction of

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a data string received by the display pager of the present invention, and FIG. 3 is a diagram showing a conventional display pager.
FIG. 4 is a block diagram showing a data string received by a conventional display pager. 1. Receiving section (RCV) 2. Comparing section (CM
P) 3...Inspection unit (CHK) 4...Encryption algorithm (ALG) 5...Display unit (DSP) 6...
Identification number holding unit (IDN) 7... Encryption key holding unit (KC
)

Claims (1)

[Claims] (1) A receiving section, a comparing section, a checking section, an encryption/decoding section,
A display pager for a paging system having a display section, the reception section receiving data transmitted from a wireless base station, and the comparison section comparing a pager identification number in the received data and a display pager in the display pager. The checking section checks that there are no errors in the content of the encrypted message in the received data, and the decryption section tests the encrypted message in the received data on the display pager. 1. A display pager, wherein the message is decrypted using an encryption key contained within the pager, and the display section displays the decrypted message.