Hytera PD70X Series, System Planner Manual

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Hytera DMR System Planner
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In this mechanism, an extra header is required for sending the encrypted
parameters, and it prolongs the system access time (by approximately 60ms).
Meanwhile, the voice super frame will be embedded with some synchronous
encryption information to prolong the system delay access time.
Hytera encryption defines its own way in embedding the encryption parameter into
the voice super frame, which is different from the DMRA encryption.
See the following figure for the advanced encryption flow.
Figure 2.4.3.2-1: Advanced Encryption Process
With the different processes and the different ways of encryption, an encrypted radio
by Hytera and that encrypted by DMRA encryption cannot communicate with each
other.
2.4.3.3 MultiKey Decrypt
MultiKey Decrypt is used to decrypt the received voices and data from different
radios with multiple keys defined in the list. Please be noted that the signal can only
be decrypted with the corresponding key. Upon the receipt of the encrypted voice or
data, the radio will find a key from the list to decrypt it. The MultiKey Decrypt is
significant to system with strong confidentiality.