JPS62155642A - Data transmission controller - Google Patents

Data transmission controller

Info

Publication number
JPS62155642A
JPS62155642A JP29484385A JP29484385A JPS62155642A JP S62155642 A JPS62155642 A JP S62155642A JP 29484385 A JP29484385 A JP 29484385A JP 29484385 A JP29484385 A JP 29484385A JP S62155642 A JPS62155642 A JP S62155642A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
ciphering
section
control section
function
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP29484385A
Inventor
Kiichiro Ito
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To select the presence/absence of ciphering and a ciphering system in matching with the chipering function of an opposite party by realizing a ciphering/decoding function and a transmission control function incorporatedly so as to reduce the memory access for the ciphering/decoding.
CONSTITUTION: The information required for a protocol control section 1 accesses a memory section 2 via a DMA control section 3. The information is transmitted/received between the DMA control section 3 and the control section 1 via a signal path 31. Then the data of layer (n) subjected to protocol processing having a layer (n) or below and sent to the line 11 at the control section 1 is read by the DMA control section 3 and the memory section 2, then subjected to ciphering processing by a ciphering section 4 and the result is given to the control section 1. Conversely, the reception data from the line 11 is subjected to the protocol processing by the control section 1, decoded by the ciphering section 4 and written in the memory section 2. It is possible to transmit/receive the data to the line 11 without ciphering and to use the signal line 31 without through the ciphering section 4, and the control section 1 decides the use/diuse of the ciphering section in matching with the function of the opposite side at the connection with the opposite party. Moreover, the control section 1 controls the ciphering system of the ciphering section 4 in matching with the ciphering function of the opposite party at the call setting of the layer (n).
COPYRIGHT: (C)1987,JPO&Japio
JP29484385A 1985-12-27 1985-12-27 Data transmission controller Pending JPS62155642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29484385A JPS62155642A (en) 1985-12-27 1985-12-27 Data transmission controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29484385A JPS62155642A (en) 1985-12-27 1985-12-27 Data transmission controller

Publications (1)

Publication Number Publication Date
JPS62155642A true true JPS62155642A (en) 1987-07-10

Family

ID=17812971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29484385A Pending JPS62155642A (en) 1985-12-27 1985-12-27 Data transmission controller

Country Status (1)

Country Link
JP (1) JPS62155642A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0214636A (en) * 1988-06-30 1990-01-18 Nec Corp Privacy telephone set
JPH0677954A (en) * 1990-06-29 1994-03-18 Digital Equip Corp <Dec> Device and method for cipher processing with optionally selective status encoding
US7760634B2 (en) 2000-10-07 2010-07-20 Lg Electronics Inc. Radio communication system and method having a radio link control layer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0214636A (en) * 1988-06-30 1990-01-18 Nec Corp Privacy telephone set
JPH0677954A (en) * 1990-06-29 1994-03-18 Digital Equip Corp <Dec> Device and method for cipher processing with optionally selective status encoding
JP2693881B2 (en) * 1990-06-29 1997-12-24 ディジタル イクイプメント コーポレイション Cryptographic processing apparatus and method for use in a communication network
US7760634B2 (en) 2000-10-07 2010-07-20 Lg Electronics Inc. Radio communication system and method having a radio link control layer
US7839894B2 (en) 2000-10-07 2010-11-23 Lg Electronics Inc. Radio communication system and method having a radio link control layer
US8325692B2 (en) 2000-10-07 2012-12-04 Lg Electronics Inc. Radio communication system and method having a radio link control layer

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