That is good pointRadios needs to properly received the encryption key information after they have affiliated to the system so MNC and LA and frequencies
and those kind of traffic information are never encrypted.
I looked at the document and it seems that the system use TEA1 and are configured to allow clear speech if a mobile/portable do not use the encryption key. They explain a lot how it is possible to monitor unencrypted conversations, that you also do with the tetra SDR# plugin, but says nothing about being able to listen to TEA1 encrypted conversations. For some reason the slovenian police seems to use this system and some of their tetraradios transmit in the clear, and TEA1 are ment for commercial use with low security demands and public safety in any other country in EU use TEA2 and do not permit any unencrypted calls in their systems.If you check closely, few posts away, i have posted a link, where some student proved, that it was not encrypted. Hope you understand .
The new network released in 2020, rumours telling using TEA3 or higherFor some reason the slovenian police seems to use this system and some of their tetraradios transmit in the clear, and TEA1 are ment for commercial use with low security demands and public safety in any other country in EU use TEA2 and do not permit any unencrypted calls in their systems.
/Ubbe
in witch countryThe new network released in 2020, rumours telling using TEA3 or higher
The document linked is over 5 years old, networks can change despite our wishes in that time.If you check closely, few posts away, i have posted a link, where some student proved, that it was not encrypted. Hope you understand .
Just curious, as always
TEA1 is encr, some rumours discuss going to use 3 in future?
Seem 1 or 2 not that secure?
Or in 3 there be new functionality implemented?
Or is 3 just being same as 2 using some new or extended functionality?
The rumours stated not be clear, waiting end summer 2020 when or if this new network be on the air.
When:
- 'Air interface encryption service' = 1
- 'Security Call 1 supported on cell' = 0
- 'Security Call 3 supported on cell' = 1
then according to the standards, all signalling and traffic will be encrypted. That means no clear speech is carried on cell.
While I'm sure it will possible to do in the far future, TETRA will be dead and gone when it happens, and so the encryption has served it's purpose.
No, I just said it because I've got nothing better to do.FACT!
End of the day, TETRA has not been broken.People believed ENIGMA cannot be cracked voila… But on the other hand the truth is, that enigma was cracked for war purposes while tetra can be cracked only for piracy benefits
BR
Tired, broken argument is tired. And broken.People believed ENIGMA cannot be cracked
Clear & encrypted can exist in same network
TEA3 are used by those that are not allowed to use TEA2. Probably can not comply with the security demands neccesary to get a TEA2 license, that the students report also seemed to indicate.
/Ubbe
Yes clear speech and encrypted speech on same cell when:Clear & encrypted can exist in same network
Security_Class_1 = No SecurityI notice the same in my area all these used 1 commercial private network, not being any government
No Security
Security_Class_1
Security_Class_2
Security_Class_3
Security_Class_0 does not existNationwide network show
Security_Class_0
Security_Class_1
Government public safety used by fire, medic, pol show
Security_Class_2
Security_Class_3
some others on same network show only
Security_Class_2
Security_Class_1_supported_on_cell | 1 | Supported = Clear speech can be on cell |
Security_Class_3_supported_on_cell | 1 | Only security class 3 supported |
Security_Class_1_supported_on_cell | 1 | Supported = Clear speech can be on cell |
Security_Class_3_supported_on_cell | 0 | Only security class 2 supported |
SDS_TL_addressing_method | 2 | Never use service centre addressing |
Hyperframe |
Filler_bits | 4 |