Srt protocolThe secure real-time transport protocol (SARFT) was a protocol defined on the basis of the real-time transport protocol.
Its main purpose is to provide encryption, message authentication, integrity assurance, and replay protection for the ATM data in unicasting and multicasting applications. In the WebRTong communication scenario, the negotiation of MasterKey and MasterSalt was completed through the negotiation of the NTLS, and then the exchanged keys were used to perform encryption on the Realm Transfer Function (Realm Transfer Function) and the Realm Transfer Function (Realm Transfer Function) to achieve secure transmission. Because the protocol itself does not protect the load data, it may cause the attacker to directly play the audio and video stream after capturing the packet, and the SARFT solved this problem.
From a structural point of view, the encrypted portion of the SARFT structure is composed of the following components: the reload, the imprinting, and the pad count (usually only the reload data is encrypted). The verified Portion is composed of the header, the Header extension, and the encrypted Portion. The encrypted portion in the structure of the STCP is the part after the RCP Header. The E-flag explicitly indicates whether the RCP packet is encrypted. The STCP index indicates the serial number of the RCP packet to prevent replay attacks. The part to be verified, the Genuine Portion, is composed of the RCP Header and the encrypted portion.
In the protocol, the two-element set < Each stream's Cryptographic Context contains parameters such as SSRC, Cipher, Authentication, and Anti-Replay Data. The Session Key in these parameters is derived by using the Key Derivation Function on the Master Key.
Before encryption, both parties need to negotiate the encryption algorithm and the secret key. For example, the negotiation method of sip can be used. In sip, add: a = crypto field to store the encryption type and the secret key, and the secret key also needs to be encrypted.
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Burning Witch Silent Android StraightBurning Flame's Witch Silent had a Chinese version for Android. It was 948.0MB in size, and the version was v1.0. It was suitable for Android or ios systems. This was a Japanese RPG game. The protagonist was a young girl Ayatsuji from a famous shrine girl family. It told the story of the exorcist priestess fighting the devil. If you want to get the Silent Android download resources of Burning Witch, you can try to search and download them on the official game download platform. It should be noted that the download source should be legal and compliant to avoid copyright and security risks.
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