CN104243138A - Encrypted recording system based on singe chip microcomputer - Google Patents
Encrypted recording system based on singe chip microcomputer Download PDFInfo
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- CN104243138A CN104243138A CN201410449982.2A CN201410449982A CN104243138A CN 104243138 A CN104243138 A CN 104243138A CN 201410449982 A CN201410449982 A CN 201410449982A CN 104243138 A CN104243138 A CN 104243138A
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Abstract
The invention discloses an encrypted recording system based on a singe chip microcomputer. The encrypted recording system comprises a digital recording circuit and a singe chip microcomputer encryption unit, the output end of the digital recording circuit is connected with the singe chip microcomputer encryption unit, the singe chip microcomputer encryption unit comprises a recording data reading module, an algorithm encryption module and a secrete key generation unit, the data input end of the recording data reading module is connected with the digital recording circuit, the data output end of the recording data reading module is connected with the algorithm encryption module, the algorithm encryption module is further connected with the secrete key generation unit, the recording data reading module is externally connected with a USB interface, and the secrete key generation unit is further externally connected with an SD card interface so as to be used for storing ciphertext data. The encrypted ciphertext data are stored in an external SD card, audio files can be transmitted to a computer through the USB interface to be decrypted in cooperation with the ciphertext data, and the encrypted recording system is reliable in confidentiality, moderate in cost, convenient to popularize and good in application prospect.
Description
Technical field
The present invention relates to a kind of SCM Based encryption recording system, belong to voice process technology field.
Background technology
Along with electronic product is to the demand extensive use of Digital Signal Processing, people to the requirement of the confidentiality of voice messaging also along with increase, on existing sound pick-up outfit, there is no increase encryption, the confidentiality of voice messaging is not high, some are provided with the sound pick-up outfit of encryption, and price is also very high, are unfavorable for its universal use.
Summary of the invention
On the existing sound pick-up outfit of technical problem solved by the invention, there is no increase encryption, the confidentiality of voice messaging is not high, and some are provided with the sound pick-up outfit of encryption, and price is also very high, is unfavorable for the problem of its universal use.SCM Based encryption recording system of the present invention, single-chip microcomputer is adopted to perform the Cooperation controlling of cryptographic algorithm and system, carry out real-time encrypted based on TEA cryptographic algorithm to the voice data received, speech data after encryption is stored in outside SD card, and voice document can be transferred to computer by USB interface and be decrypted process, confidentiality is reliable, moderate, be convenient to popularize, have a good application prospect.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of SCM Based encryption recording system, it is characterized in that: comprise digital recording circuit, single-chip microcomputer ciphering unit, the input of described digital recording circuit is used for External microphone, the output of described digital recording circuit is connected with single-chip microcomputer ciphering unit, described single-chip microcomputer ciphering unit treasured comprises reading recording data module, algorithm for encryption module, encryption key generation unit, the data input pin of described reading recording data module is connected with digital recording circuit, the data output end reading recording data module is connected with algorithm for encryption module, described algorithm for encryption module is also connected with encryption key generation unit, described reading recording data module circumscribed USB interface, described encryption key generation unit is external SD card interface also, for depositing encrypt data.
Aforesaid SCM Based encryption recording system, is characterized in that: adopt STM32 processor in described single-chip microcomputer ciphering unit, described STM32 processor is also connected with encryption and completes indicator light.
Aforesaid SCM Based encryption recording system, is characterized in that: described digital recording circuit comprises the LC filter circuit, ADC sample circuit, the coded treatment circuit that connect successively.
Aforesaid SCM Based encryption recording system, is characterized in that: described encryption key generation unit generates 128 keys, and described algorithm for encryption module is the cryptographic algorithm based on TEA.
The invention has the beneficial effects as follows: SCM Based encryption recording system of the present invention, single-chip microcomputer is adopted to perform the Cooperation controlling of cryptographic algorithm and system, carry out real-time encrypted based on TEA cryptographic algorithm to the voice data received, encrypt data after encryption is stored in outside SD card, and voice document can be transferred to computer by USB interface and coordinate encrypt data to be decrypted process, confidentiality is reliable, moderate, be convenient to popularize, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of SCM Based encryption recording system of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, a kind of SCM Based encryption recording system, comprise digital recording circuit, single-chip microcomputer ciphering unit, the input of digital recording circuit is used for External microphone, the output of digital recording circuit is connected with single-chip microcomputer ciphering unit, single-chip microcomputer ciphering unit treasured comprises reading recording data module, algorithm for encryption module, encryption key generation unit, the data input pin of described reading recording data module is connected with digital recording circuit, the data output end reading recording data module is connected with algorithm for encryption module, described algorithm for encryption module is also connected with encryption key generation unit, described reading recording data module circumscribed USB interface, described encryption key generation unit is external SD card interface also, for depositing encrypt data.
STM32 processor is adopted in described single-chip microcomputer ciphering unit, described STM32 processor is also connected with encryption and completes indicator light, when lighting, for reminding for encrypting successfully, store encrypt data in SD card and be used for deciphering, language file after USB storage encryption, is inserted on computer and just can be decrypted process.
Described digital recording circuit comprises the LC filter circuit, ADC sample circuit, the coded treatment circuit that connect successively, for the audio signal of simulation being converted to the digital signal that single-chip microcomputer can extract.
Described encryption key generation unit generates 128 keys, described algorithm for encryption module is the cryptographic algorithm based on TEA, and TEA is a kind of small-sized symmetrical enciphering and deciphering algorithm, supports 128 keys, the advantage of this cryptographic algorithm is that speed is fast, efficiency is high, is used in small-sized language file encryption.
In sum, SCM Based encryption recording system of the present invention, single-chip microcomputer is adopted to perform the Cooperation controlling of cryptographic algorithm and system, carry out real-time encrypted based on TEA cryptographic algorithm to the voice data received, the encrypt data after encryption is stored in outside SD card, and can by voice document by USB interface be transferred to computer coordinate encrypt data be decrypted process, confidentiality is reliable, moderate cost, is convenient to popularize, has a good application prospect.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (4)
1. SCM Based encryption recording system, it is characterized in that: comprise digital recording circuit, single-chip microcomputer ciphering unit, the input of described digital recording circuit is used for External microphone, the output of described digital recording circuit is connected with single-chip microcomputer ciphering unit, described single-chip microcomputer ciphering unit treasured comprises reading recording data module, algorithm for encryption module, encryption key generation unit, the data input pin of described reading recording data module is connected with digital recording circuit, the data output end reading recording data module is connected with algorithm for encryption module, described algorithm for encryption module is also connected with encryption key generation unit, described reading recording data module circumscribed USB interface, described encryption key generation unit is external SD card interface also, for depositing encrypt data.
2. SCM Based encryption recording system according to claim 1, is characterized in that: adopt STM32 processor in described single-chip microcomputer ciphering unit, described STM32 processor is also connected with encryption and completes indicator light.
3. SCM Based encryption recording system according to claim 1, is characterized in that: described digital recording circuit comprises the LC filter circuit, ADC sample circuit, the coded treatment circuit that connect successively.
4. SCM Based encryption recording system according to claim 1, is characterized in that: described encryption key generation unit generates 128 keys, described algorithm for encryption module is the cryptographic algorithm based on TEA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449982.2A CN104243138A (en) | 2014-09-04 | 2014-09-04 | Encrypted recording system based on singe chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449982.2A CN104243138A (en) | 2014-09-04 | 2014-09-04 | Encrypted recording system based on singe chip microcomputer |
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| Publication Number | Publication Date |
|---|---|
| CN104243138A true CN104243138A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410449982.2A Pending CN104243138A (en) | 2014-09-04 | 2014-09-04 | Encrypted recording system based on singe chip microcomputer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112818375A (en) * | 2021-03-08 | 2021-05-18 | 郑州铁路职业技术学院 | Encryption system for recording information transmission |
| CN112818376A (en) * | 2021-03-08 | 2021-05-18 | 郑州铁路职业技术学院 | Encryption method for anti-theft recording information transmission |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152225A (en) * | 1995-12-15 | 1997-06-18 | 曹柏实 | Dynamic encryption and decryption method and communication equipment in secret phonetic broadcast and communication system |
| CN201773580U (en) * | 2010-08-06 | 2011-03-23 | 叶胜刚 | Wireless remote-control digital audio player |
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2014
- 2014-09-04 CN CN201410449982.2A patent/CN104243138A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152225A (en) * | 1995-12-15 | 1997-06-18 | 曹柏实 | Dynamic encryption and decryption method and communication equipment in secret phonetic broadcast and communication system |
| CN201773580U (en) * | 2010-08-06 | 2011-03-23 | 叶胜刚 | Wireless remote-control digital audio player |
Non-Patent Citations (1)
| Title |
|---|
| 杨钏钏，王加加: "基于 STM32 的加密录音笔设计", 《电子科技》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112818375A (en) * | 2021-03-08 | 2021-05-18 | 郑州铁路职业技术学院 | Encryption system for recording information transmission |
| CN112818376A (en) * | 2021-03-08 | 2021-05-18 | 郑州铁路职业技术学院 | Encryption method for anti-theft recording information transmission |
| CN112818375B (en) * | 2021-03-08 | 2024-03-12 | 郑州铁路职业技术学院 | Encryption system for recording information transmission |
| CN112818376B (en) * | 2021-03-08 | 2024-03-26 | 郑州铁路职业技术学院 | Encryption method for anti-theft recording information transmission |
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Application publication date: 20141224 |
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| RJ01 | Rejection of invention patent application after publication |