CN113536247B - Hidden data watermarking method for mobile phone number with MD5 characteristic of traceable information - Google Patents
Hidden data watermarking method for mobile phone number with MD5 characteristic of traceable information Download PDFInfo
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- CN113536247B CN113536247B CN202110823219.1A CN202110823219A CN113536247B CN 113536247 B CN113536247 B CN 113536247B CN 202110823219 A CN202110823219 A CN 202110823219A CN 113536247 B CN113536247 B CN 113536247B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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Abstract
A method for generating hidden data watermark with MD5 character mobile phone number includes generating watermark information content by encryption conversion to operator, operation time and using unit information, embedding identification information (visible or invisible) in host medium to prove ownership of original author to digital asset, quickly tracing leaked data, detecting watermark existence according to integrity of data file and watermark information trace, and quickly identifying watermark marking information (data source address, distribution unit, responsible person, distribution time, etc.), so as to provide data basis for security event.
Description
Technical Field
The invention relates to a digital watermark embedding algorithm, in particular to an MD5 characteristic mobile phone number implicit digital watermark embedding and tracing algorithm based on big data.
Background
The information security event of information disclosure may cause serious crime cases such as phishing, telecom fraud, financial trade, etc., and finally cause serious economic loss, seriously endanger national economic security and public interests, increasingly complex and serious network security situation, and advanced construction of national network and national strategy urge to innovate security technology and continuously increase investment intensity.
Enterprises and public institutions with large data assets such as operators, governments and the like, the data assets are highly sensitive data, the data management responsibility is large, and data protection measures are needed for realizing inter-department inter-industry data sharing interaction and data application service.
In the process of carrying out internal data transmission on text type data files, the data watermark is hopefully added and used as a process tracking record of data file transmission, and under the condition of data leakage, evidence collection and tracing can be carried out, so that the following requirements are required: 1) For mass data file content, the characteristic value of the data content is not influenced; 2) The added data watermark has concealment and is not easy to be found; 3) The data watermark supports feature identification and tracing watermark information; 4) Meets the MD5 characteristic of the mobile phone number.
Disclosure of Invention
For the data format of the 32-bit MD5 format, the data watermark of the format can be simulated and generated, the watermark information can be expanded and applied according to the application scene, the content of the embedded information can be configured and expanded, and the tracing of the watermark information is supported.
The inventive content may be applied to data hiding in MD5 data format.
The hidden data watermarking method of the mobile phone number with the MD5 characteristic of traceable information includes the following steps:
1) Encryption structure design; the watermark algorithm adopts a hierarchical encryption structure design and is divided into four layers of encryption including information transcoding, redundant code encryption, check code encryption and license key encryption;
2) Designing 128 different 128-bit hexadecimal key libraries; the key library is a randomly generated 128-bit hexadecimal license key, a group of 16 license keys, and 8 groups in total;
3) Generating transcoding codes for watermark information: carrying out 16-system transcoding on the multi-section information codes to be loaded by the watermark, and carrying out corresponding merging and shifting processing according to a configured transcoding algorithm;
4) Generating a random code: the random code generates a 16-system character string with a specified bit number according to algorithm configuration;
5) Generating a check code: calculating the random code and the transcoded information code, and using a cyclic redundancy check algorithm to code the appointed information according to algorithm configuration to generate an 8-bit or 16-bit check code for the calculated information code;
6) Obtaining a license key: randomly acquiring 1 license key from a key library for watermark ciphertext generation;
7) Watermark information generation: the information codes and the license Key are assembled with the check code after being calculated;
8) Watermark information is embedded in conjunction with the context of the data file.
The tracing information comprises the following steps:
1) Checking coding characteristics;
2) Decoding to obtain a license Key;
3) Encoding and checking by a check code algorithm;
4) Acquiring information coding information;
5) Acquiring an inversion code coding algorithm;
6) The decryption algorithm obtains watermark information;
7) And generating a watermark tracing report.
Under the condition that subjective quality of host media is not affected, identification information (visible or invisible) is embedded in the host media to prove ownership of digital assets by originators, leakage data are rapidly traced, whether watermarks exist or not is detected according to integrity of the data files and watermark information traces by unsealing the leakage data files, watermark marking information (data source address, distribution unit, responsible person, distribution time and the like) is rapidly identified, and accordingly data basis is provided for security events.
Drawings
FIG. 1 is a flow chart of the present invention
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
The hidden data watermarking method of the mobile phone number with the MD5 characteristic of traceable information includes the following steps:
1) Encryption structure design; the watermark algorithm adopts a hierarchical encryption structure design and is divided into four layers of encryption including information transcoding, redundant code encryption, check code encryption and license key encryption;
2) Designing 128 different 128-bit hexadecimal key libraries; the key library is a randomly generated 128-bit hexadecimal license key, a group of 16 license keys, and 8 groups in total;
3) Generating transcoding codes for watermark information: carrying out 16-system transcoding on the multi-section information codes to be loaded by the watermark, and carrying out corresponding merging and shifting processing according to a configured transcoding algorithm;
4) Generating a random code: the random code generates a 16-system character string with a specified bit number according to algorithm configuration;
5) Generating a check code: calculating the random code and the transcoded information code, and using a cyclic redundancy check algorithm to code the appointed information according to algorithm configuration to generate an 8-bit or 16-bit check code for the calculated information code;
6) Obtaining a license key: randomly acquiring 1 license key from a key library for watermark ciphertext generation;
7) Watermark information generation: the information codes and the license Key are assembled with the check code after being calculated;
8) Watermark information is embedded in conjunction with the context of the data file.
Design of watermark samples
■ Generation of watermarks
Claims (2)
1. A method for implicit data watermarking of a mobile phone number with MD5 characteristics based on traceable information is characterized by comprising the following steps: watermark embedding comprises the following steps:
1) Encryption structure design; the watermark algorithm adopts a hierarchical encryption structure design and is divided into four layers of encryption including information transcoding, redundant code encryption, check code encryption and license key encryption;
2) Designing 128 different 128-bit hexadecimal key libraries; the key library is a randomly generated 128-bit hexadecimal license key, a group of 16 license keys, and 8 groups in total;
3) Generating transcoding codes for watermark information: carrying out 16-system transcoding on the multi-section information codes to be loaded by the watermark, and carrying out corresponding merging and shifting processing according to a configured transcoding algorithm;
4) Generating a random code: the random code generates a 16-system character string with a specified bit number according to algorithm configuration;
5) Generating a check code: calculating the random code and the transcoded information code, and using a cyclic redundancy check algorithm to code the appointed information according to algorithm configuration to generate an 8-bit or 16-bit check code for the calculated information code;
6) Obtaining a license key: randomly acquiring 1 license key from a key library for watermark ciphertext generation;
7) Watermark information generation: the information codes and the license Key are assembled with the check code after being calculated;
8) Watermark information is embedded in conjunction with the context of the data file.
2. The method according to claim 1, characterized in that: the tracing information comprises the following steps:
1) Checking coding characteristics;
2) Decoding to obtain a license Key;
3) Encoding and checking by a check code algorithm;
4) Acquiring information coding information;
5) Acquiring an inversion code coding algorithm;
6) The decryption algorithm obtains watermark information;
7) And generating a watermark tracing report.
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| CN202110823219.1A CN113536247B (en) | 2021-07-21 | 2021-07-21 | Hidden data watermarking method for mobile phone number with MD5 characteristic of traceable information |
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| CN113536247B true CN113536247B (en) | 2023-09-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114186252A (en) * | 2021-12-06 | 2022-03-15 | 上海观安信息技术股份有限公司 | Data watermark generation method and device and data source tracing method and device |
| CN113934992B (en) * | 2021-12-17 | 2022-03-11 | 山东青揽电子有限公司 | Digital confusion marking algorithm |
Citations (4)
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|---|---|---|---|---|
| CN1527585A (en) * | 2003-03-05 | 2004-09-08 | 刘瑞祯 | Safe digital information transmitting and applying method |
| CN109657426A (en) * | 2019-01-30 | 2019-04-19 | 贵州大学 | A kind of data source tracing method based on digital signature and digital watermarking |
| CN110688675A (en) * | 2019-09-25 | 2020-01-14 | 卓尔智联(武汉)研究院有限公司 | Data leakage tracing device and method based on privacy protection and readable storage medium |
| CN111241576A (en) * | 2020-01-03 | 2020-06-05 | 南京邮电大学 | Zero watermark method for distribution protection of database |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050135613A1 (en) * | 2002-05-10 | 2005-06-23 | Karlheinz Brandenburg | Device and method for generating encrypted data, for decrypting encrypted data and for generating re-signed data |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527585A (en) * | 2003-03-05 | 2004-09-08 | 刘瑞祯 | Safe digital information transmitting and applying method |
| CN109657426A (en) * | 2019-01-30 | 2019-04-19 | 贵州大学 | A kind of data source tracing method based on digital signature and digital watermarking |
| CN110688675A (en) * | 2019-09-25 | 2020-01-14 | 卓尔智联(武汉)研究院有限公司 | Data leakage tracing device and method based on privacy protection and readable storage medium |
| CN111241576A (en) * | 2020-01-03 | 2020-06-05 | 南京邮电大学 | Zero watermark method for distribution protection of database |
Non-Patent Citations (1)
| Title |
|---|
| QR二维码水印加密及解密算法研究;单利安;;无线互联科技(第10期);全文 * |
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