Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

Obviously whoever you are calling has to be able to de-crypt the call.

How does the receiver know the correct encryption key to de-crypt the call ?

rumpole said:

Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

Obviously whoever you are calling has to be able to de-crypt the call.

How does the receiver know the correct encryption key to de-crypt the call ?

by spending money on it.. it all depends upon whether there is a budget for it.

rumpole said:

Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

Obviously whoever you are calling has to be able to de-crypt the call.

How does the receiver know the correct encryption key to de-crypt the call ?

.

The crazy cat crept into crypt crapped and crept out again.

roughbarked said:

rumpole said:

Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

Obviously whoever you are calling has to be able to de-crypt the call.

How does the receiver know the correct encryption key to de-crypt the call ?

by spending money on it.. it all depends upon whether there is a budget for it.

So you can only call someone who has bought the de-crypt key ?

i would imagine you give them the decrypt key, after all you do want the people you ring to be able to understand the message.

Plenty of options out there

http://en.wikipedia.org/wiki/Crypto_phone

https://silentcircle.com/web/silent-phone/

http://www.abc.net.au/news/2014-03-05/phones-stymie-police-efforts-to-prevent-underworld-crime/5301256

https://www.encrypteverything.ca/index.php?title=Cell_phone_privacy_guide_%28Android%29

It appears that these phone encryption packages use 256 bit AES, which the NSA reckon is pretty good.

From Advanced Encryption Standard

AES is available in many different encryption packages, and is the first publicly accessible and open cipher approved by the National Security Agency (NSA) for top secret information when used in an NSA approved cryptographic module

AES is a symmetric-key algorithm, i.e. the same key is used for encrypting and decrypting. I expect that some form of public-key algorithm like RSA is used to safely exchange the AES key over the phone network.

PM 2Ring said:

It appears that these phone encryption packages use 256 bit AES, which the NSA reckon is pretty good.

From Advanced Encryption Standard

AES is available in many different encryption packages, and is the first publicly accessible and open cipher approved by the National Security Agency (NSA) for top secret information when used in an NSA approved cryptographic module

AES is a symmetric-key algorithm, i.e. the same key is used for encrypting and decrypting. I expect that some form of public-key algorithm like RSA is used to safely exchange the AES key over the phone network.

NSA recommended…is that when they intercept the hardware and crack it beforehand?

Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

no.

All data on the phone network is recorded and can be cracked at a later date using high powered computers built for the very purpose of cracking “uncrackable” phones. they are telling people the blackberry is uncrackable – its a honey pot operation to make dodgy characters buy the phone. chances are they have someone in blackberry that has created some backdoor in the phone.

Criminal behavior aside…

I like the one ‘the one where everyone’s email was supposedly’ read for the good of the nation…

There is apparently a very simply way of subverting that ‘big brother’ attempt of censorship.

No no no it’s not as simple as writing a letter or telling them in person…

>No no no it’s not as simple as writing a letter or telling them in person…

Keeps nasty (illegal) thoughts in his or her head, the purpose of the cranium, not to leak, be intercepted, private.

Back in the day the British army used radio vans between the baddies phone and the tower because it was in clear before it was retransmitted by the tower.

not to leak, be intercepted, private.
———————-

Yes, as simple as… typing a draft… for no other ears.

I know you guys know this…

The movie was like 10 years ago.

>Does mobile phone encryption prevent a phone being tapped, ie prevents the conversation being recorded ?

The purpose of the encoding you mention is to render the information in data unrecoverable or not easily recoverable by third parties. Humans have been doing such things since before Adam. It’s in no way something that has emerged with technology.

It’s very much like speaking in non-explicit language with your back to those unwanted, upwind, quietly, in what at a distance sounds like a muffled utterance.

downwind