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But provider for receiver can access that data
If I send a stupid image with a hidden message, not even the provider can know what am I sending. Fax is still the best way to hide messages in plain sight.
Internet is just a joke nowadays.
In my early young years surviving the communism I invented my own language based on geometry signs, used with my closed friends. One day the security services found our signs, but not even after 30 years they couldn't decrypt our messages LOL
Besides, bitcoinfax.bet will send it anyways over Internet.
If you are being watched by agencies, In Latvia it could be suspicious if you want to send fax for some strange reason, nobody uses it here for decades. :D
nobody uses it here for decades
except police... every fucking police station still use fax
Not sure about Latvia. In my first workplace (not a police), some ~25 years ago, "fax" already was just a modem card in computer connected to phone line and computer converted from / to e-mails with attachment in an internal Exchange mail server.
check for example 3cx.com - full support for encrypted fax to email servers, over VoIP
So, happens over Internet. :)
please decrypt it if you can.
Again... if I do not want a message to be caught, I will not use any digital support. Simple as that.
Better will send a dog or pigeon LOL
How can I decrypt data I don't have access to?
Besides, your initial argument was that encryption is not needed.
I will not use any digital support.
check for example 3cx.com - full support for encrypted fax to email servers, over VoIP
How it's not digital? I don't think true analog faxes even exist anywhere now, it's all over IP.
But, no you are wrong. Sniffing analog (POTS) landlines was more easy, you just needed to tap physical line somewhere on the path and could read everything. For example, by some guy climbing up a telephone pole. Or connecting to switch if you have access to provider facilities.
And how it differs if you send the same image with a hidden message over Internet?
internet is public.
I have a simple rule: do not post anything on internet you do not want to be seen as "public" in the future.
Once you post it on internet, is not "yours" anymore... no matter how much encryption you put.
Don't know for all the countries, but where I live, all landlines and everything that includes more than one provider is over IP nowadays anyway.
One day the security services found our signs, but not even after 30 years they couldn't decrypt our messages.
Interesting!
I am not a a phone company, so I can't do that, as I can't access the data. But provider for receiver can access that data. I don't see how relaying message through phone company is more secure than Internet or Bluetooth.
Yes, you can, but, for example, AES-CBC is definitely better.
"Anyone, from the most clueless amateur to the best cryptographer, can create an algorithm that he himself can't break." / Bruce Schneier /
No. Encryption was used since at least ancient Egypt for secret communications for a reason.