CN109547403B - Method for in-band message communication of E1 channel password equipment - Google Patents
Method for in-band message communication of E1 channel password equipment Download PDFInfo
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- CN109547403B CN109547403B CN201811146756.1A CN201811146756A CN109547403B CN 109547403 B CN109547403 B CN 109547403B CN 201811146756 A CN201811146756 A CN 201811146756A CN 109547403 B CN109547403 B CN 109547403B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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Abstract
The invention discloses a method for in-band message communication of an E1 channel password device. The password equipment automatically detects whether the idle bit is available or not, and then the in-band message communication pipeline is constructed by utilizing the idle bit, so that the process does not need user configuration and intervention, and the network environment adaptability and the usability of the password equipment are improved. The automatic detection and message pipeline construction is realized by an E1 protocol processing module, and the specific communication content and protocol are realized by a CPU module, so that the method has strong flexibility. The implementation method and the control process of the invention are simple and convenient for software and hardware implementation.
Description
The technical field is as follows:
the invention belongs to the technical field of data transmission of cryptographic equipment, and particularly relates to a method for in-band message communication of E1 channel cryptographic equipment.
Background art:
the E1 channel cipher devices need to communicate with each other frequently in addition to processing channel traffic, and realize functions such as key agreement between both parties, cipher synchronization control, device status monitoring, etc. One way is to access the management interfaces of all the password devices to a special management network to realize mutual message communication, which is an out-of-band message communication method, is inconvenient in the actual deployment and use process, and needs to construct and configure a special management network; another method is implemented by using the cryptographic device traffic channel itself for communication, which is an in-band message communication method, but since the channel communication protocol usually does not reserve communication resources specifically for the cryptographic device, it needs to be designed for a specific communication protocol and network application environment.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The invention content is as follows:
it is an object of the present invention to provide a method for in-band messaging for E1 channel cryptographic devices that overcomes the above-mentioned deficiencies in the prior art.
To achieve the above object, the present invention provides a method for in-band message communication of an E1 channel cryptographic device, comprising the steps of: (1) after the startup is completed or the channel communication is interrupted and recovered, the local password device a sequentially detects the availability of reserved bits sa (x) of the TS0 time slot of the E1 channel odd frame:
(2) the E1 protocol processing module of the local cryptographic device a inserts the "probe protocol string code" for each bit in turn, the E1 protocol processing module of the opposite cryptographic device B maintains the receiving state, and once the "probe protocol string code" is received and detected 3 consecutive times, the opposite cryptographic device B will identify this bit receiving function as available:
(3) the E1 protocol processing module of the opposite end cryptographic device B inserts the probe response string code into the bit when detecting the probe protocol string code, and the home end cryptographic device a identifies the bit as being available for both the sending function and the receiving function after receiving the probe response string code:
(4) the local terminal password device A sends a 'response confirmation string code' to the opposite terminal password device B again through the bit, the opposite terminal password device B identifies the bit as available for sending after receiving the 'response confirmation string code', and the process of detecting the bit available between the local terminal password device A and the opposite terminal password device B is completed up to this point:
(5) after the bit available detection is completed, the CPU module of the local-end password device A selects the bit available for both sending and receiving according to the detection result, and establishes an in-band communication message pipeline through the E1 protocol processing module to communicate with the opposite-end password device B.
Preferably, in the technical solution, the reserved bits are 5, which are SA4, SA5, SA6, SA7, and SA8, respectively.
Preferably, in the technical solution, when 1 reserved bit is available, the in-band communication message pipe communication capability is 4kbps, and when 5 reserved bits are all available, the 20kbps communication capability can be provided.
Compared with the prior art, the invention has the following beneficial effects:
by automatically detecting whether the idle bit is available and constructing the in-band message communication pipeline by using the idle bit, user configuration and intervention are not needed in the process, and the network environment adaptability and the usability of the password equipment are improved. The automatic detection and message pipeline construction is realized by an E1 protocol processing module, and the specific communication content and protocol are realized by a CPU module, so that the method has strong flexibility. The realization method and the control process are simple, and the software and hardware are convenient to realize.
Description of the drawings:
FIG. 1 is a schematic diagram illustrating the bit availability detection principle of a method for in-band message communication of an E1 channel cipher device according to the present invention;
FIG. 2 is a schematic diagram of the communication principle of in-band messaging for the E1 channel cipher device;
the specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Example 1
As shown in fig. 1-2, a method for in-band messaging for an E1 channel cryptographic device, comprising the steps of: (1) after the startup is completed or the channel communication interruption is recovered, the local password device a sequentially performs availability detection on 5 reserved bits SA4, SA5, SA6, SA7 and SA8 of a TS0 timeslot of an E1 channel odd frame:
(2) the E1 protocol processing module of the local cryptographic device a inserts the "probe protocol string code" for each bit in turn, the E1 protocol processing module of the opposite cryptographic device B maintains the receiving state, and once the "probe protocol string code" is received and detected 3 consecutive times, the opposite cryptographic device B will identify this bit receiving function as available:
(3) the E1 protocol processing module of the opposite end cryptographic device B inserts the probe response string code into the bit when detecting the probe protocol string code, and the home end cryptographic device a identifies the bit as being available for both the sending function and the receiving function after receiving the probe response string code:
(4) the local terminal password device A sends a 'response confirmation string code' to the opposite terminal password device B again through the bit, the opposite terminal password device B identifies the bit as available for sending after receiving the 'response confirmation string code', and the process of detecting the bit available between the local terminal password device A and the opposite terminal password device B is completed up to this point:
(5) after the bit available detection is completed, the CPU module of the local-end password device A selects the bit available for both sending and receiving according to the detection result, and establishes an in-band communication message pipeline through the E1 protocol processing module to communicate with the opposite-end password device B. In case 1 bit is available, this pipe communication capability is 4kbps, and in case 5 bits are all available, 20kbps communication capability can be provided.
By automatically detecting whether the idle bit is available and constructing the in-band message communication pipeline by using the idle bit, user configuration and intervention are not needed in the process, and the network environment adaptability and the usability of the password equipment are improved. The automatic detection and message pipeline construction is realized by an E1 protocol processing module, and the specific communication content and protocol are realized by a CPU module, so that the method has strong flexibility. The realization method and the control process are simple, and the software and hardware are convenient to realize.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (3)
1. A method for in-band messaging for an E1 channel cryptographic device, comprising the steps of: (1) after the startup is completed or the channel communication is interrupted and recovered, the local password device a sequentially detects the availability of reserved bits sa (x) of the TS0 time slot of the E1 channel odd frame:
(2) the E1 protocol processing module of the local cryptographic device a inserts the "probe protocol string code" for each bit in turn, the E1 protocol processing module of the opposite cryptographic device B maintains the receiving state, and once the "probe protocol string code" is received and detected 3 consecutive times, the opposite cryptographic device B will identify this bit receiving function as available:
(3) the E1 protocol processing module of the opposite end cryptographic device B inserts the probe response string code into the bit when detecting the probe protocol string code, and the home end cryptographic device a identifies the bit as being available for both the sending function and the receiving function after receiving the probe response string code:
(4) the local terminal password device A sends a 'response confirmation string code' to the opposite terminal password device B again through the bit, the opposite terminal password device B identifies the bit as available for sending after receiving the 'response confirmation string code', and the process of detecting the bit available between the local terminal password device A and the opposite terminal password device B is completed up to this point:
(5) after the bit available detection is completed, the CPU module of the local-end password device A selects the bit available for both sending and receiving according to the detection result, and establishes an in-band communication message pipeline through the E1 protocol processing module to communicate with the opposite-end password device B.
2. The method for in-band messaging for an E1 channel cipher device, according to claim 1, wherein: the reserved bits are 5, and are respectively SA4, SA5, SA6, SA7 and SA 8.
3. The method for in-band messaging for an E1 channel cipher device, according to claim 2, wherein: the in-band communication message pipe communication capability is 4kbps in case 1 reserved bit is available, and the 20kbps communication capability can be provided in case 5 reserved bits are all available.
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| CN201811146756.1A CN109547403B (en) | 2018-09-29 | 2018-09-29 | Method for in-band message communication of E1 channel password equipment |
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| CN201811146756.1A CN109547403B (en) | 2018-09-29 | 2018-09-29 | Method for in-band message communication of E1 channel password equipment |
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| CN109547403B true CN109547403B (en) | 2021-04-06 |
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| CN112787753B (en) * | 2020-12-24 | 2023-03-24 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | E1 channel in-band communication method, sending equipment and receiving equipment |
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| CN1859221A (en) * | 2005-08-04 | 2006-11-08 | 上海华为技术有限公司 | Method for detecting E1/T1 connection error |
| KR100706763B1 (en) * | 2006-08-16 | 2007-04-13 | 맥슨씨아이씨 주식회사 | Apparatus and method for supplying clock through e1/t1 frame including time synchronization information |
| CN201018521Y (en) * | 2007-03-09 | 2008-02-06 | 杭州中导科技开发有限公司 | Environment monitoring device |
| CN101854655A (en) * | 2009-04-03 | 2010-10-06 | 大唐移动通信设备有限公司 | Method of loopback fault positioning of IMA link and loopback fault handling device |
| CN102801639A (en) * | 2012-09-17 | 2012-11-28 | 南京丰泰通信技术股份有限公司 | Communication device and method for transmitting network management protocol by using E1 odd frame Sa bit |
| CN207691852U (en) * | 2017-12-26 | 2018-08-03 | 江苏启泰物联网科技有限公司 | The protocol conversion device of long-range RS232 protocol signals and Ethernet |
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- 2018-09-29 CN CN201811146756.1A patent/CN109547403B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1859221A (en) * | 2005-08-04 | 2006-11-08 | 上海华为技术有限公司 | Method for detecting E1/T1 connection error |
| KR100706763B1 (en) * | 2006-08-16 | 2007-04-13 | 맥슨씨아이씨 주식회사 | Apparatus and method for supplying clock through e1/t1 frame including time synchronization information |
| CN201018521Y (en) * | 2007-03-09 | 2008-02-06 | 杭州中导科技开发有限公司 | Environment monitoring device |
| CN101854655A (en) * | 2009-04-03 | 2010-10-06 | 大唐移动通信设备有限公司 | Method of loopback fault positioning of IMA link and loopback fault handling device |
| CN102801639A (en) * | 2012-09-17 | 2012-11-28 | 南京丰泰通信技术股份有限公司 | Communication device and method for transmitting network management protocol by using E1 odd frame Sa bit |
| CN207691852U (en) * | 2017-12-26 | 2018-08-03 | 江苏启泰物联网科技有限公司 | The protocol conversion device of long-range RS232 protocol signals and Ethernet |
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