Hytera BP

[martufello]

At this page How Police Two-Way Radio Ensure the Security of Police Communications? is written that “the Basic Privacy solution provides key options between 1-255 using 10, 32, or 64 characters to the transmission and receiver frequency, each of which must match up. The keys are not customized, so if a hacker was so minded they need only scan all 255 keys to potentially hit on the one you are using.”

But this is not like Mototrbo BP with a fixed key value to be entered, with Hytera radios we can enter different keys length and values.
So to me it seems to be a contradiction the sentence that “they keys are not customized” with the fact that we can enter variable length and values ….
Any better explanation ?

 

[RayAir]

At this page How Police Two-Way Radio Ensure the Security of Police Communications? is written that “the Basic Privacy solution provides key options between 1-255 using 10, 32, or 64 characters to the transmission and receiver frequency, each of which must match up. The keys are not customized, so if a hacker was so minded they need only scan all 255 keys to potentially hit on the one you are using.”

But this is not like Mototrbo BP with a fixed key value to be entered, with Hytera radios we can enter different keys length and values.
So to me it seems to be a contradiction the sentence that “they keys are not customized” with the fact that we can enter variable length and values ….
Any better explanation ?

Hytera basic has more variables than mototrbo basic, but Hytera takes the key bits and xor's them directly with the plaintext.
Also if you have some of the key right but a byte or more is wrong , depending on key length it still works but with some audio degradation.
I tested this on my PD782's.

No it's not secure but offers privacy from scanners and casual listeners.

 

[martufello]

Hytera basic has more variables than mototrbo basic, but Hytera takes the key bits and xor's them directly with the plaintext.
Also if you have some of the key right but a byte or more is wrong , depending on key length it still works but with some audio degradation.
I tested this on my PD782's.

No it's not secure but offers privacy from scanners and casual listeners.

thanks !