Encrypted message coding method based on Android system

Abstract

The invention discloses an encrypted message coding method based on an Android system. The method comprises the steps that 1, a communication terminal A encrypts a message content to be encrypted in an encrypted message application into a ciphertext, then uses an ISO8859-1 coding mode to perform single-byte coding on the ciphertext, and adds an identification head into the message to identify the message to be an encrypted message; 2, the communication terminal A sets a coding format in PUD to 8-bit coding, and then adopts a PDU mode to send the message to a receiver, namely a communication terminal B; and 3, after receiving the message, the communication terminal B receives the message by using the PDU mode according to the coding mode of the message to acquire the ciphertext of the message, and then the communication terminal B acquires a plaintext of the message content after removing the identification head of the message and decrypting the ciphertext of the message. According to the method, the transceiving of the common message can be ensured, and the encrypted messages can also be compatible, without increasing the length of the message and generating any excessive cost.

Description

technical field [0001] The invention belongs to the technical field of network communication security, and relates to an encoding method, in particular to an encrypted short message encoding method in Android encrypted communication. Background technique [0002] The rapid development and wide application of mobile communication technology have brought great convenience to people's life, but also brought many security risks. Due to the openness of the wireless channel, as long as the corresponding receiving equipment is used, the call information of the mobile phone can be intercepted, and it can be located, tracked and monitored. Encrypted communication can protect communication security, and encrypted short message can prevent the eavesdropper from obtaining the information in it. Aiming at the actual application scenarios of encrypted SMS, we have designed an encrypted SMS encoding scheme for Android mobile phones to protect the security of SMS data in mobile communicati...

AI Technical Summary

Problems solved by technology

[0003] Encrypting SMS content is a commonly used method, and in this case, since the Android system will encode the SMS at the framework layer, some encodi

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