Cold boot attacks in 2020

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haggis88

Member
Jul 8, 2012
11
0
Hi,

I'm interested in using a custom rom on either my Samsung S10 or A20 and have recently come across security issues with unlocked boot loaders, specifically cold boot attacks, even for encrypted devices.

I can't find many recent internet articles about the topic. The majority seem to be pre-2014 so was wondering if cold boot attacks aren't as much of an issue anymore, perhaps due to better Android security.

So I was hoping if anyone can confirm any of the following, assuming a person is using disk encryption.

1. How long data is supposed to persist in phone memory at room temperature (ie without cooling)? I've read that's is as little as a few seconds up to half a minute and as much as 90 minutes.

2. Do the latest versions of Android either encrypt ram itself or issue ram wipe commands on shut down and/or boot up?

3. Are there any other considerations about the ability to retrieve encryption key information that may be held in ram?

Thanks.
 

Tekodrink

Senior Member
Feb 16, 2015
64
2
Hi,

I'm interested in using a custom rom on either my Samsung S10 or A20 and have recently come across security issues with unlocked boot loaders, specifically cold boot attacks, even for encrypted devices.

I can't find many recent internet articles about the topic. The majority seem to be pre-2014 so was wondering if cold boot attacks aren't as much of an issue anymore, perhaps due to better Android security.

So I was hoping if anyone can confirm any of the following, assuming a person is using disk encryption.

1. How long data is supposed to persist in phone memory at room temperature (ie without cooling)? I've read that's is as little as a few seconds up to half a minute and as much as 90 minutes.

2. Do the latest versions of Android either encrypt ram itself or issue ram wipe commands on shut down and/or boot up?

3. Are there any other considerations about the ability to retrieve encryption key information that may be held in ram?

Thanks.


1. ram is magnetic . it would unload at no power../
drain it.!

2. Ram could not be encrypted if its not supported by the kernel. if it could u workin at ironsteel

3. there are.