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Best way to swap HDD between two T2
- Thread starter sine24
- Start date
Won't that make (undecrypted) recordings on the receiving machine unwatchable?
I think you have to decrypt (or lose) at least one boxes encrypted recordings if you don't decrypt.
MymsMan
Ad detector
Unless using the slower software decryption to play a recording the machine has to have the same key that was used to make the recording.
So you need to swap keys along with the HDDs or decrypt everything before swapping.
Zero/blank key has no special significance it is just another key value
So you need to swap keys along with the HDDs or decrypt everything before swapping.
Zero/blank key has no special significance it is just another key value
bottletop
Active Member
That's right. Zero key is just a key that has all the same digits, so a key of all zeros or all 1s etc behave similar.
It takes advantage of this, according to the Advance Settings/Encryption Key -
'Custom encryption key
NB: For fastest direct decryption, set the second half of the key to the same as the first half.'
According to this, OP set both keys the same
So OP needs to make sure of this
Which ties in with your last post.
I.e. preexisting encrypted recordings prior to key change won't playback natively.
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Is that what auto-unprotect pack does?
Luke
Well-Knwοn Мember
Let me see if I got this:
Swap the key from box 1 to box 2 together with HDD and viceversa. No need to decrypt
If that is literally what you are doing, with no requirement for (eg) both HDD to be able to play in the same machine, then yes.
The Custom Encryption Key option (in the Web-IF -> Advanced menu) does say "NB: For fastest direct decryption, set the second half of the key to the same as the first half." This is the only forum thread I can find that mentions it verbatim, and it could be misleading because it might not be needed.
So if anyone finds this post by looking for that text (as I did...) to see what it means, note the fact it says "direct decryption". This means software (using 'stripts' on or off the box). On the box, I measured that using a queued "Decryption (direct, slower)" Web-IF option will be about 2.5 times faster, if the key is set as mentioned.
It's unlikely you will need this "direct" method on the HDR box because it can use hardware to do the decrypting (via several methods, e.g. Web-IF on the box, or DLNA streaming/saving files [use auto-unprotect if they are HD]), and those methods are several (maybe ~7) times faster.
In summary - changing the key such that the "second half of the key to the same as the first half" applies does not help when moving hard drives between boxes. Doesn't do any harm though, unless you still have encrypted files on the HD from the other box, in which case you'll need to use the key from other other box obviously.
If you want to set auto-decrypt on a whole HD, it might take a while (mine runs at 6.5MByte/s, so 150 secs/GB or 42 hours per 1TB disk)
So if anyone finds this post by looking for that text (as I did...) to see what it means, note the fact it says "direct decryption". This means software (using 'stripts' on or off the box). On the box, I measured that using a queued "Decryption (direct, slower)" Web-IF option will be about 2.5 times faster, if the key is set as mentioned.
It's unlikely you will need this "direct" method on the HDR box because it can use hardware to do the decrypting (via several methods, e.g. Web-IF on the box, or DLNA streaming/saving files [use auto-unprotect if they are HD]), and those methods are several (maybe ~7) times faster.
In summary - changing the key such that the "second half of the key to the same as the first half" applies does not help when moving hard drives between boxes. Doesn't do any harm though, unless you still have encrypted files on the HD from the other box, in which case you'll need to use the key from other other box obviously.
If you want to set auto-decrypt on a whole HD, it might take a while (mine runs at 6.5MByte/s, so 150 secs/GB or 42 hours per 1TB disk)
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