Details military secret language!

Secret language disguises sensitive information that needs to be protected by changing the expression of information, so that unauthorized people cannot understand the content of protected information. Military secret language refers to the encrypted information used in the military. Characterized in that:

(i) Confidentiality?

Only the sender and the designated receiver can understand the content of the sent message. The eavesdropper can intercept the encrypted message, but can't restore the original information and reach the message content.

(ii) Certification?

Both the sender and the receiver should be able to verify the other party involved in the communication process. The other party to the communication does have their claimed identity. That is, the third party can't pretend to be the other party you communicate with, but can identify the other party's identity.

(iii) Information integrity (information? intergrity)？

Even if the sender and receiver can verify each other, they still need to ensure that their communication content has not been changed during transmission.

(iv) Undeniability?

If a person receives a message from the other party, he should also confirm that the message really comes from the claimed sender. After the sender sends it, he can't deny that he sent it himself.

Let's talk about feelings again.

Military wireless communication is encrypted. Nowadays, telegrams can automatically translate plaintext into ciphertext through cipher machines, and vice versa. Voice communication uses frequency hopping radio stations. As long as you don't reveal the key, everything will be fine. In the past, all this was done by hand. For communication stations, telegrams sent and received are delivered by telegraph translators in confidential departments. What the signalman can see and send and receive is a coded telegram composed of four digits. The job of a radio station is to send or receive these numbers in Morse code with a key and copy them. The contents of the telegram are unknown (for example, in TV series, the chief security officer directly reads the telegram received by the operator, or gives oral instructions, which are sent by the operator and do not exist in real life). This is the main business of the radio mission. In case the subordinate troops go out, it is the business of FM communication department to be within 30 kilometers. Over 30 kilometers (more than the communication distance of ultrashort wave FM radio station), the radio station will take over and send personnel to carry the 7 1 radio station with the team (that is, the thing that works in the short wave band in Heroes and Children). The transmission power of 7 1 radio station is only 2W, so it is not a problem to set up an antenna and communicate for 300 kilometers. For team communication, ignore confidential information, use the secret language table compiled by the communication department spontaneously, and translate it by itself. The secret language list contains all the words and phrases that can be thought of for information transmission and operational command, and each word or phrase corresponds to a set of 4 digits. Occasionally, words that are not compiled in the table are encrypted into numbers with Chinese Pinyin.