CN102404120A - Encryption method and encryption system for electronic documents - Google Patents
Encryption method and encryption system for electronic documents Download PDFInfo
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- CN102404120A CN102404120A CN201110334639XA CN201110334639A CN102404120A CN 102404120 A CN102404120 A CN 102404120A CN 201110334639X A CN201110334639X A CN 201110334639XA CN 201110334639 A CN201110334639 A CN 201110334639A CN 102404120 A CN102404120 A CN 102404120A
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Abstract
The invention provides an encryption system for electronic documents. The encryption system comprises a random secret key generating module, an encryption secret key generating module, a ciphertext generating module, a packeting module and a plain text decryption module, wherein the random secret key generating module generates a 32-bit random secret key by using a random algorithm; the encryption secret key generating module encrypts the random secret key by using an asymmetrical encryption algorithm of a digital certificate public key of a document reader so as to form the encryption secret key; the ciphertext generating module encrypts a confidential document by using a symmetrical encryption algorithm and the encryption secret key so as to generate a ciphertext; the packeting module packets the ciphertext and the encryption secret key into a packet and stores the packet in an encryption document; and after obtaining the ciphertext, a reader of the document uses the plain text decryption module to decrypt the ciphertext by the encryption secret key so as to obtain a plain text.
Description
Technical field
The present invention relates to the encipher-decipher method of all electronic documents of computer realm, mainly is a kind of encryption method that is used for computer electronic documents.
Background technology
The transmission of data at present comprises dual mode: a kind of plaintext transmission that is based on user password, another kind of is the encryption connection on basis with Https.First kind of mode, the transmission aspect is used expressly and is transmitted, and can hold back reading of content through simple packet, has serious potential safety hazard; And the Https encryption communication that uses at present only solves the requirement of data encryption transmission, owing to only use access password, can't guarantee the corresponding of password and user, and the attack of formula guessed in the opposing password; Also can't realize the identification and the uniqueness guarantee of identity through username-password.
The present widely used safety communication of financial industry such as bank, security is generally encryption equipment; Encryption equipment can effectively be guaranteed data transmission security and user identity validity as encryption communication equipment, and still, this kind equipment purchase cost is high; And encryption equipment can only be supported TCP/IP Socket packet communication modes at present; The secondary development difficulty is big, needs more professional knowledge, only supports a few program development language; Can't adapt to diversified enterprise software system in the e-commerce environment, therefore can't in medium and small client, promote the use of encryption equipment.
Summary of the invention
The problem that the present invention is directed to the prior art existence is made improvement, the purpose of this invention is to provide a kind of encryption method of electronic document, comprising:
Step 1: use random algorithm to produce 32 long random keys;
Step 2: use the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, form encryption key;
Step 3: use AES symmetric encipherment algorithm and described encryption key that confidential document is encrypted, produce ciphertext;
Step 4: described ciphertext, described encryption key are formed a packet deposit in the encrypt file;
Step 5: after the document reader obtains described ciphertext,, obtain expressly with said encryption key decrypting ciphertext.
During enforcement, step 3 also comprises Data Format Transform, carries out format conversion when described confidential document is encrypted, and offers the document reader afterwards again and deciphers.
During enforcement, to described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
The present invention also provides a kind of encryption system of electronic document, comprising:
The random key generation module uses random algorithm to produce 32 long random keys;
The encryption key generation module uses the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, forms encryption key;
The ciphertext generation module uses symmetric encipherment algorithm and described encryption keys confidential document, produces ciphertext;
Group bag module is formed a packet with ciphertext, encryption key and is deposited in the encrypt file;
Expressly deciphering module after the document reader obtains described ciphertext, is used the encryption key decrypting ciphertext, obtains expressly.
During enforcement, also comprise format converting module, carry out format conversion when described confidential document is encrypted, offer the document reader afterwards again and decipher.
During enforcement, to described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
Compared with prior art; The encryption method of electronic document provided by the present invention has realized electronic document is carried out safety and access control, owing to adopted rivest, shamir, adelman that key is encrypted; Adopt symmetry algorithm that electronic document is encrypted; When solving the document encryption/decryption speed, guaranteed the fail safe of document, safer guarantee is provided.
Description of drawings
Fig. 1 is the schematic flow sheet of the encryption method of electronic document of the present invention;
Fig. 2 is the structural representation of the encryption system of electronic document of the present invention.
Embodiment
For shape of the present invention, structure and characteristics can be understood better, below will enumerate preferred embodiment and combine accompanying drawing to be elaborated.
Consult the present invention shown in Figure 1 a kind of encryption method of electronic document is provided, its step comprises:
Step 1: use random algorithm to produce 32 long random keys 11;
Step 2: use the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, form encryption key 12;
Step 3: use AES symmetric encipherment algorithm and described encryption key that confidential document is encrypted, produce ciphertext 13;
Step 4: described ciphertext, described encryption key are formed a packet deposit in the encrypt file 14 in;
Step 5: after the document reader obtains described ciphertext,, obtain plaintext 15 with said encryption key decrypting ciphertext.
Step 3 also comprises Data Format Transform, carries out format conversion when described confidential document is encrypted, and offers the document reader afterwards again and deciphers.To described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
Consult shown in Figure 2ly, the present invention provides a kind of encryption system of electronic document, comprising:
Random key generation module 21 uses random algorithm to produce 32 long random keys;
Encryption key generation module 22 uses the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, forms encryption key;
Group bag module 24 is formed a packet with ciphertext, encryption key and is deposited in the encrypt file;
Expressly deciphering module 25 after the document reader obtains described ciphertext, is used the encryption key decrypting ciphertext, obtains expressly.
Also comprise format converting module 26 (not drawing among the figure), carry out format conversion when described confidential document is encrypted, offer the document reader afterwards again and decipher.To described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and within spirit that claim limits and scope, can carry out many modifications, variation or equivalence to it, but they will fall in protection scope of the present invention all.
Claims (6)
1. the encryption method of an electronic document is characterized in that, comprising:
Step 1: use random algorithm to produce 32 long random keys;
Step 2: use the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, form encryption key;
Step 3: use AES symmetric encipherment algorithm and described encryption key that confidential document is encrypted, produce ciphertext;
Step 4: described ciphertext, described encryption key are formed a packet deposit in the encrypt file;
Step 5: after the document reader obtains described ciphertext,, obtain expressly with said encryption key decrypting ciphertext.
2. the encryption method of electronic document as claimed in claim 1 is characterized in that, step 3 also comprises Data Format Transform, carries out format conversion when described confidential document is encrypted, and offers the document reader afterwards again and deciphers.
3. the encryption method of electronic document as claimed in claim 2 is characterized in that, to described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
4. the encryption system of an electronic document is characterized in that, comprising:
The random key generation module uses random algorithm to produce 32 long random keys;
The encryption key generation module uses the asymmetrical encryption algorithm of document reader digital certificate PKI to encrypt described random key, forms encryption key;
The ciphertext generation module uses symmetric encipherment algorithm and described encryption keys confidential document, produces ciphertext;
Group bag module is formed a packet with ciphertext, encryption key and is deposited in the encrypt file;
Expressly deciphering module after the document reader obtains described ciphertext, is used the encryption key decrypting ciphertext, obtains expressly.
5. the encryption system of electronic document as claimed in claim 4 is characterized in that, also comprises format converting module, carries out format conversion when described confidential document is encrypted, and offers the document reader afterwards again and deciphers.
6. the encryption system of electronic document as claimed in claim 5 is characterized in that, to described confidential document, changing the mechanism data transaction according to one is unified format, and the document reader will be with the reader opening document corresponding to this form after obtaining ciphertext.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334639XA CN102404120A (en) | 2011-10-28 | 2011-10-28 | Encryption method and encryption system for electronic documents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334639XA CN102404120A (en) | 2011-10-28 | 2011-10-28 | Encryption method and encryption system for electronic documents |
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| CN102404120A true CN102404120A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110334639XA Pending CN102404120A (en) | 2011-10-28 | 2011-10-28 | Encryption method and encryption system for electronic documents |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831360A (en) * | 2012-08-06 | 2012-12-19 | 江苏敏捷科技股份有限公司 | Personal electronic document safety management system and management method thereof |
| CN103560892A (en) * | 2013-11-21 | 2014-02-05 | 深圳中兴网信科技有限公司 | Secret key generation method and secret key generation device |
| CN108319863A (en) * | 2017-01-18 | 2018-07-24 | 珠海金山办公软件有限公司 | A kind of enterprise-level key decrypting method and device |
| CN109934008A (en) * | 2018-10-12 | 2019-06-25 | 王龙 | A kind of multitask document file management system based on Permission Levels |
| CN110363016A (en) * | 2019-07-15 | 2019-10-22 | 宜春宜联打印设备有限公司 | A kind of printing encryption method and device, Method of printing and printing device |
| CN110381046A (en) * | 2019-07-10 | 2019-10-25 | 广东星舆科技有限公司 | A kind of encrypted transmission method of GNSS data |
| CN114499955A (en) * | 2021-12-24 | 2022-05-13 | 长威信息科技发展股份有限公司 | Dynamic decoding method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123495A (en) * | 2007-09-07 | 2008-02-13 | 农革 | A data encryption, decryption system and method |
| CN101442409A (en) * | 2007-11-23 | 2009-05-27 | 东方钢铁电子商务有限公司 | Encipher method and system for B2B data exchange |
-
2011
- 2011-10-28 CN CN201110334639XA patent/CN102404120A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101123495A (en) * | 2007-09-07 | 2008-02-13 | 农革 | A data encryption, decryption system and method |
| CN101442409A (en) * | 2007-11-23 | 2009-05-27 | 东方钢铁电子商务有限公司 | Encipher method and system for B2B data exchange |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831360A (en) * | 2012-08-06 | 2012-12-19 | 江苏敏捷科技股份有限公司 | Personal electronic document safety management system and management method thereof |
| CN102831360B (en) * | 2012-08-06 | 2015-01-28 | 江苏敏捷科技股份有限公司 | Personal electronic document safety management system and management method thereof |
| CN103560892A (en) * | 2013-11-21 | 2014-02-05 | 深圳中兴网信科技有限公司 | Secret key generation method and secret key generation device |
| CN108319863A (en) * | 2017-01-18 | 2018-07-24 | 珠海金山办公软件有限公司 | A kind of enterprise-level key decrypting method and device |
| CN109934008A (en) * | 2018-10-12 | 2019-06-25 | 王龙 | A kind of multitask document file management system based on Permission Levels |
| CN109934008B (en) * | 2018-10-12 | 2021-01-15 | 深圳市中欧瑞安科技有限公司 | Multi-task document management system based on permission level |
| CN110381046A (en) * | 2019-07-10 | 2019-10-25 | 广东星舆科技有限公司 | A kind of encrypted transmission method of GNSS data |
| CN110381046B (en) * | 2019-07-10 | 2021-12-07 | 广东星舆科技有限公司 | GNSS data encryption transmission method |
| CN110363016A (en) * | 2019-07-15 | 2019-10-22 | 宜春宜联打印设备有限公司 | A kind of printing encryption method and device, Method of printing and printing device |
| CN110363016B (en) * | 2019-07-15 | 2021-05-07 | 宜春宜联打印设备有限公司 | Printing encryption method and device, printing method and printing equipment |
| CN114499955A (en) * | 2021-12-24 | 2022-05-13 | 长威信息科技发展股份有限公司 | Dynamic decoding method and system |
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Application publication date: 20120404 |