CN100490370C - Device and method for automatic safe receiving cipher key of chaos enciphering communication - Google Patents
Device and method for automatic safe receiving cipher key of chaos enciphering communication Download PDFInfo
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- CN100490370C CN100490370C CNB2003101119128A CN200310111912A CN100490370C CN 100490370 C CN100490370 C CN 100490370C CN B2003101119128 A CNB2003101119128 A CN B2003101119128A CN 200310111912 A CN200310111912 A CN 200310111912A CN 100490370 C CN100490370 C CN 100490370C
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Abstract
The device is composed of plug-in board and pins of supplying power for the board. In the board, socket of phone leadin, socket of serial communications interface, socket of LED operation indicator, socket of ready button and socket of hand-reset button are installed. The device works in cooperation with the safe device of automatic transmitting cipher key of chaos enciphering communication system. Subsequent multiple deciphering processing is carried out after signal of multiple encrypting keys is received from transmission party through telephone line. Nonvolatile memory stores the resolved original cipher key, which is provided to chaos enciphering communication for further declassifying. The procedure is completed in independent safe channel automatically with no manual work. The invention raises intellectualized degree and security.
Description
Technical field
The present invention relates to coded communication and automatic reception technical field, the particularly reception of microprocessor and deciphering and control technology specifically are meant a kind of safe automatic receiving device and method of chaos-based secure communication key.
Background technology
At present, utilize the chaos encryption technology to carry out on the internet in the system of Chaotic Encryption communication, chaotic key wherein needs to send the other side to by other independent escape way.Existing way is by the key that personnel transmit or reception is sent by phone or fax and so on media by manual type, again by manually making a copy of.The primitive operation process of key manual delivery and typing is loaded down with trivial details, the possible mistakes and omissions or the phenomenon that leaks of also unavoidable appearance.
Summary of the invention
Purpose of the present invention is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and a kind of safe automatic receiving device and method of chaos-based secure communication key is provided.This device and chaos-based secure communication system are used, the key of the multi-enciphering that passes over via the secret key safety automatic conveyor by the telephone channel automatic reception, carry out corresponding multiple deciphering then, at last decruption key being offered chaotic communication system uses, whole process is finished automatically, has improved in the chaos-based secure communication the intelligent degree to key transmission and reception.
The safe automatic receiving device of a kind of chaos-based secure communication key of the present invention, it is characterized in that, it is made of jointly computer circuits plate and plate energization pins, phone lead-in socket, serial communication interface socket, LED relay indicating light socket, ready button socket, hand-reset button socket are installed on the circuit plugboard, and respectively with circuit plugboard on respective point be electrically connected mutually.
In order to realize the present invention better; described circuit plugboard is by the phone lead-in; the simulation circuit for answering; polar protective circuit; ring detecting circuit; encryption key receives decoding circuit; the telephone path signal feed circuit; the non-volatile access circuit of decruption key; the ready cue circuit of decruption key; secret key decryption and central control processing circuit; the running state monitoring circuit; serial communication interface circuit is electrically connected formation jointly; its interconnected relationship is: the simulation circuit for answering directly is connected with the phone lead-in with ring detecting circuit; polar protective circuit is respectively by simulation off hook signal line; encryption key receives the decoded signal line; telephone path signal feed signal line respectively with the simulation circuit for answering; encryption key receives decoding circuit; the telephone path signal feed circuit is electrically connected mutually, and secret key decryption and central control processing circuit are respectively by the ring signal lines; simulation off hook signal line; encryption key receives the decoded signal line; telephone path signal feed signal line; the non-volatile access signal line of decruption key; the ready cue line of decruption key; the running state monitoring holding wire; the serial communication interface holding wire respectively with ring detecting circuit; the simulation circuit for answering; encryption key receives decoding circuit; the telephone path signal feed circuit; the non-volatile access circuit of decruption key; the ready cue circuit of decruption key; the running state monitoring circuit; serial communication interface circuit is electrically connected mutually.
The safe automatic reception method of a kind of chaos-based secure communication key of the present invention, it is characterized in that, phone lead-in from device of the present invention receives the encryption key signal that is sent by telephone channel, after encryption key reception decoding circuit carries out signal decoding, deliver to secret key decryption and central control processing circuit is decrypted processing, solve decruption key, deliver to the have a power failure nonvolatile storage of the non-volatile access circuit of decruption key then, under the prompting of the ready cue circuit of decruption key, by serial communication interface circuit decruption key is offered the usefulness that chaotic communication system is made decrypt ciphertext again.
In order to realize the present invention better, it is to have designed the triple des decryption method on the basis of the world disclosed DES enciphering/deciphering standard that described secret key decryption is handled, its process steps is: (1) generates whole subsolution keys of the first heavy DES method, the encryption key of receiving is decrypted processing, forms the first heavy decruption key; (2) regenerate whole subsolution keys of the new second heavy DES method, the first heavy decruption key is decrypted processing, form the second heavy decruption key; (3) regenerate whole subsolution keys of new triple des method, the second heavy decruption key is decrypted processing, form triple decruption keys, the key that this promptly reduces is with its nonvolatile storage that has a power failure.
The present invention compared with prior art has following advantage and beneficial effect:
1. the supporting use of key automatic safe conveyer of the present invention and chaos-based secure communication system provides independently escape way for chaotic key receives specially.
2. the present invention can realize the deciphering of triple des method to the encryption key of chaotic communication by microprocessor, just is reduced into original cipher key after receiving terminal is received, has strengthened the level security that transmits passage greatly.
3. the present invention realizes the storage of power failure nonvolatile to the key that receives.
4. the present invention is by the independent automatic reception safely of telephone channel encrypted secret key and offer chaotic communication system and use, and avoided loaded down with trivial details, the mistakes and omissions that may occur of chaotic key manual delivery and typing operation or the phenomenon that leaks.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the circuit block diagram of apparatus of the present invention;
Fig. 3 is the circuit theory diagrams of the embodiment of the invention;
Fig. 4 is the flow diagram of the inventive method.
Embodiment
Below in conjunction with drawings and Examples, the present invention is done detailed description further.
As shown in Figure 1, apparatus of the present invention are installed computer circuits plate 1, the plate energization pins 2 formed by integrated circuit and are constituted jointly, phone lead-in socket 3, serial communication interface socket 4, LED relay indicating light socket 5, ready button socket 6, hand-reset button socket 7 are installed on the circuit plugboard, and respectively with circuit plugboard on respective point be electrically connected mutually.
As shown in Figure 2; on circuit plugboard 1; simulation circuit for answering 9 directly is connected with phone lead-in 8 with ring detecting circuit 11; polar protective circuit 10 is respectively by simulation off hook signal line; encryption key receives the decoded signal line; telephone path signal feed signal line respectively with the simulation circuit for answering 9; encryption key receives decoding circuit 12; telephone path signal feed circuit 13 is electrically connected mutually, and secret key decryption and central control processing circuit 16 are respectively by the ring signal lines; simulation off hook signal line; encryption key receives the decoded signal line; telephone path signal feed signal line; the non-volatile access signal line of decruption key; the ready cue line of decruption key; the running state monitoring holding wire; the serial communication interface holding wire respectively with ring detecting circuit 11; simulation circuit for answering 9; encryption key receives decoding circuit 12; telephone path signal feed circuit 13; the non-volatile access circuit 14 of decruption key; the ready cue circuit 15 of decruption key; running state monitoring circuit 17; serial communication interface circuit 18 is electrically connected mutually.Its operation principle is: the sender is during to the dialing of the telephone channel of this device; ring detecting circuit 11 starts; after secret key decryption and 16 identifications of central control processing circuit; connect speech channel by simulation circuit for answering 9; and answer signal presented to the sender via telephone path signal feed circuit 13; the encryption key touch-tone signal that the sender is transmitted is delivered to encryption key via polar protective circuit 10 and is received decoding circuit 12; the decoded encryption key of process dual-tone multifrequency delivers to secret key decryption and central control processing circuit 16 is carried out multiple decrypt operation; original cipher key after the deciphering is delivered to the non-volatile access circuit 14 of decruption key and is preserved; in a single day as long as there is key in the non-volatile access circuit 14 of decruption key; the prompting of will sounding of the ready cue circuit 15 of decruption key; provide key by serial communication interface circuit 18 to chaotic communication system by secret key decryption and central control processing circuit 16; the operating state of 17 pairs of secret key decryption of running state monitoring circuit and central control processing circuit 16 is carried out monitoring in real time, in case the operation entanglement just makes system reset rerun.
As shown in Figure 3, phone lead-in 8 inserts through socket J1; Simulation circuit for answering 9 is electrically connected jointly by transistor T R2 and TR3, resistance R 9, diode D1, relay R Y and contact K1 thereof and constitutes; Polar protective circuit 10 is electrically connected jointly by rectifier BR, resistance R 8 and constitutes; Ring detecting circuit 11 is electrically connected jointly by photoelectrical coupler U7, capacitor C 4 and C5, resistance R 10～R12, diode D2, inverter U6A and U6D and constitutes; Encryption key reception decoding circuit 12 is electrically connected jointly by integrated circuit U2, crystal oscillator CY2, capacitor C 1～C3, resistance R 1～R3 and constitutes; Telephone path signal feed circuit 13 is electrically connected jointly by transistor T R1, resistance R 6 and R7 and constitutes; The non-volatile access circuit 14 of decruption key is electrically connected jointly by integrated circuit U3, resistance R 4 and R5 and constitutes; The ready cue circuit 15 of decruption key is electrically connected jointly by inverter U6B, transistor T R4, buzzer SP, resistance R 13 and R14 and constitutes; Deciphering and central control processing circuit 16 are electrically connected jointly and are constituted by integrated circuit U1, crystal oscillator CY1, capacitor C 10 and C11, resistance R 15 and R16, LED, ready button S1; Running state monitoring circuit 17 is electrically connected jointly and is constituted by integrated circuit U4, hand-reset button S2; Serial communication interface circuit 18 is electrically connected jointly and is constituted by integrated circuit U5, capacitor C 6～C9, serial ports socket J2.Its circuit working principle is: the supporting use of secret key safety automatic conveyor of apparatus of the present invention and chaos-based secure communication system, the sender carries out dialing to this device, bell signal starts photoelectrical coupler U7, its output is through U6A and U6D buffering and deliver to U1, after U1 identification, send triggering level to transistor T R2, drive by TR3, make the contact K1 adhesive of relay R Y, realize phone simulation off-hook, U1 generation this moment answer signal is presented to speech channel by transistor T R1, thereafter the encryption key touch-tone signal from the sender enters speech channel, through bridge circuit BR and C3 every directly, deliver to U2 and carry out the dual-tone multifrequency decoding, the encryption key that solves is sent into U1 by delivery outlet Q1～Q4 and is carried out multiple decrypt operation, the original cipher key that solves is delivered to the serial storage U3 nonvolatile that has a power failure from U1 and is stored, owing to there has been the original cipher key of having deciphered, the U1 cue of sounding, anti-phase through U6B, and by transistor T R4 driving SP sounding, prompting operation person can provide original cipher key to make the usefulness of decrypt ciphertext to chaotic communication system, press ready button S1, U1 then reads the original cipher key of having deposited from serial storage U3, transmit to serial communication integrated circuit U5 by the TXD mouth, after the U5 level conversion, send from the J2 port, LED provides the operating state indication, in addition, U1 regularly provides low level signal to the WDI of U4 end, and low level signal disappears in case the U1 operation makes mistakes, the RESET end of U4 produces high level signal automatically resets U1, and hand-reset button S2 is made for the usefulness of reset test.
As shown in Figure 4, the operation principle of multiple solution decryption method of the present invention is: establishing encryption key is C, and the first heavy key of separating to triple decryption processing is followed successively by Y1, Y2 and Y3, and decryption function is D
Y1, D
Y2And D
Y3, the decruption key of output is P, it is P=D that the decryption processing that then this method realized is closed
Y3[D
Y2[D
Y1[C]]]: (1) generates whole subsolution key Y1 of the first heavy DES method
i(i=1～16) are by subsolution key Y1
iThe order of (i=16～1) is decrypted processing to encryption key, forms the first heavy decruption key; (2) regenerate whole subsolution key Y2 of the new second heavy DES method
i(i=1～16) are by subsolution key Y2
iThe order of (i=16～1) is decrypted processing to the first heavy decruption key, forms the second heavy decruption key; (3) regenerate whole subsolution key Y3 of new triple des method
i(i=1～16) are by subsolution key Y3
iThe order of (i=16～1) is decrypted processing to the second heavy decruption key, forms triple decruption keys, and the original cipher key that this promptly reduces is with its nonvolatile storage that has a power failure.
The inventor is through development test, think and realize that optimal way of the present invention can be: (1) is by shown in Figure 1, the design processing and manufacturing becomes printed circuit plate 1 and plate energization pins 2 thereof, lead-in socket 3 of having a telephone installed on it, serial communication interface socket 4, LED relay indicating light socket 5, ready button socket 6, hand-reset button socket 7; (2) as one of embodiments of the invention, shown in Fig. 2 and 3, make circuit plugboard, and behind the screening components and parts connection is installed, for example integration member U1 can select the 97C52 type for use, crystal oscillator CY1 and CY2 select 12M and 3.57M type respectively for use, U2 can select 9170 types for use, and U3 can select the 24C04 type for use, and U4 can select 705 types for use, U5 can select 232 types for use, U6A～U6D can select 4011 types for use, and U7 can select the 4N25 type for use, and transistor T R1, TR3 and TR4 can select 9014 types for use, TR2 can select 9015 types for use, and relay R Y can select 5V normally opened contact type for use; By method shown in Figure 4 compilation language compilation triple des decrypted program; By shown in Fig. 2,3 and the described annexation of top specification carry out circuit board and install to connect, and be electrically connected with associated components, install connect circuit board after, simply power up debugging, just can implement the present invention preferably.
Claims (1)
1. the safe automatic receiving device of a chaos-based secure communication key, it is characterized in that, it is made of jointly computer circuits plate and plate energization pins, phone lead-in socket, serial communication interface socket, LED relay indicating light socket, ready button socket, hand-reset button socket are installed on the circuit plugboard, and respectively with circuit plugboard on respective point be electrically connected mutually;
Described circuit plugboard is electrically connected jointly and is constituted by phone lead-in, simulation circuit for answering, polar protective circuit, ring detecting circuit, encryption key reception decoding circuit, telephone path signal feed circuit, the non-volatile access circuit of decruption key, the ready cue circuit of decruption key, secret key decryption and central control processing circuit, running state monitoring circuit, serial communication interface circuit, and its interconnected relationship is: described simulation circuit for answering and ring detecting circuit insert the phone lead-in by phone lead-in socket respectively; Described ring detecting circuit is electrically connected with the secret key decryption and the central control processing circuit that insert LED relay indicating light socket and ready button socket mutually by the ring signal lines, carries out telephone dial-up signal identification; Described secret key decryption and central control processing circuit are electrically connected with the simulation circuit for answering mutually by simulation off hook signal line, realize the connection of speech channel; Described secret key decryption and central control processing circuit also are electrically connected with the telephone path signal feed circuit mutually by telephone path signal feed signal line, present answer signal; Described telephone path signal feed circuit also is electrically connected with polar protective circuit mutually by telephone path signal feed signal line, transmits answer signal; Described polar protective circuit is electrically connected with the simulation circuit for answering mutually by simulation off hook signal line, transmits answer signal and receives the encryption key signal that the phone lead-in transmits; Described encryption key receives decoding circuit and is electrically connected mutually with polar protective circuit by encryption key reception decoded signal line, receives the encryption key signal and also decodes; Described secret key decryption and central control processing circuit also receive the decoded signal line by encryption key and are electrically connected mutually with encryption key reception decoding circuit, will be decrypted processing through decoded encryption key; Described secret key decryption and central control processing circuit also are electrically connected with the non-volatile access circuit of decruption key mutually by the non-volatile access signal line of decruption key, with have a power failure nonvolatile storage of the original cipher key after the deciphering; Described secret key decryption and central control processing circuit also are electrically connected with the ready cue circuit of decruption key mutually by the ready cue line of decruption key, externally point out decruption key ready; Described secret key decryption and central control processing circuit also are electrically connected with the running state monitoring circuit that inserts the hand-reset button socket mutually by the running state monitoring holding wire, and the realization system works is monitored and resetted; Described secret key decryption and central control processing circuit also are electrically connected with the serial communication interface circuit that inserts the serial communication interface socket mutually by the serial communication interface holding wire, provide key to chaotic communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101119128A CN100490370C (en) | 2003-10-28 | 2003-10-28 | Device and method for automatic safe receiving cipher key of chaos enciphering communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101119128A CN100490370C (en) | 2003-10-28 | 2003-10-28 | Device and method for automatic safe receiving cipher key of chaos enciphering communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1540908A CN1540908A (en) | 2004-10-27 |
| CN100490370C true CN100490370C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101119128A Expired - Fee Related CN100490370C (en) | 2003-10-28 | 2003-10-28 | Device and method for automatic safe receiving cipher key of chaos enciphering communication |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100486154C (en) * | 2005-10-19 | 2009-05-06 | 中国科学院数学与系统科学研究院 | Fourth-order network multi ring surface chaos circuit and its use method |
| CN101013936B (en) * | 2006-12-31 | 2010-11-24 | 华南理工大学 | Separated quick conveying device for information safety key |
| CN101162995B (en) * | 2007-11-20 | 2011-06-22 | 华南理工大学 | Communication system and communication method of chaos safety information internet transmission |
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2003
- 2003-10-28 CN CNB2003101119128A patent/CN100490370C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 一种基于随机密钥及"类标准映射"的图像加密算法. 李昌刚，韩正之，张浩然.计算机学报，第26卷第4期. 2003 |
| 一种基于随机密钥及"类标准映射"的图像加密算法. 李昌刚，韩正之，张浩然.计算机学报，第26卷第4期. 2003 * |
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| CN1540908A (en) | 2004-10-27 |
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Granted publication date: 20090520 Termination date: 20091130 |