Real time data encryption transmission method for voice over internet protocol (VoIP)
A technology for encrypted transmission and real-time data, which is applied in the transmission system, user identity/authority verification, electrical components, etc., and can solve the problem of failing to realize the VoIP identification-tampering detection-data encryption system, unable to fully adapt to VoIP security requirements, Problems such as inability to provide effective guarantee for VoIP real-time performance
Inactive Publication Date: 2013-07-03
上海星地通讯工程研究所
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the traditional hybrid key encryption technology can improve communication security to a certain extent, it only addresses the key security issue, but fails to realize the identification-tampering detection-data encryption system required by VoIP, and cannot fully adapt to VoIP security requirements, but also can not provide effective guarantee for the real-time VoIP
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0027] The real-time data encryption transmission method for VoIP of the present invention includes two stages: a communication establishment stage and a communication data transmission stage, and different data encryption strategies (RSA encryption method and improved AES encryption method) are respectively adopted in the two stages.
[0028] In the communication establishment phase, both parties save the RSA public key used by the other party for identity authentication and initial communication; the communication initiator generates AES encrypted information containing at least the AES key for the communication data transmission phase, and sends the generated AES encrypted information Use the RSA private key of the communication initiator to perform RSA encryption to generate the data part of the communication information; then use the signature of th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a real time data encryption transmission method for a voice over internet protocol (VoIP), belonging to the technical field of digital networks. The method comprises a communication establishment stage and a communication data transmission stage, and different data encryption strategies are adopted at the two stages respectively. The invention also provides an improved advanced encryption standard (AES) encryption method. In the improved method, when the encryption / decryption is carried out, firstly, data are grouped in accordance with 128 bits each group, m-group data are extracted every other n groups, and the extracted data are arranged into a new bit string in accordance with an original sequence; the obtained new bit string is subjected to AES encryption / decryption; and the encrypted / decrypted bit string is split in accordance with the length of 128*m bits each group, and the split groups are backfilled to encryption / decryption data which are subjected to data extraction in accordance with an original extraction sequence so as to obtain encrypted / decrypted data, wherein m and n are natural numbers. The AES encryption method is obtained by improving a traditional combined key encryption technology; and optimal balance between the safety of the data transmission and the instantaneity of the data transmission can be determined flexibly in accordance with actual requirements.
Description
technical field [0001] The invention relates to a real-time data encrypted transmission method, in particular to a real-time data encrypted transmission method for VoIP (Voice over Internet Protocol), which belongs to the technical field of digital networks. Background technique [0002] With the development of network technology, a voice transmission technology based on IP network—VoIP is more and more widely used. The essence of VoIP is to digitize the analog voice signal (Voice) and transmit it in real time on the IP data network (IP Network) in the form of data packets (Data Packet). As a special traffic in the IP network, voice data not only encounters the common virus security threats of IP network data, but also faces some unique security problems, such as call interference, eavesdropping, call fraud, and denial of service. Therefore, encrypted transmission of real-time data has become an inevitable choice for VoIP services. [0003] As we all know, data encryption ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/32
Inventor 孙知信金易琛
Owner 上海星地通讯工程研究所