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Author Topic: blockchain.info can't import compressed private keys?  (Read 1459 times)
randomproof
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May 21, 2012, 03:03:08 AM
 #1

Subject says it, but does anyone know of a way to uncompress a private key?

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Stephen Gornick
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May 21, 2012, 04:10:00 AM
 #2

The last status on that was a little over a week ago:

 - http://bitcointalk.org/index.php?topic=40264.msg894981#msg894981

randomproof
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May 21, 2012, 04:56:13 PM
 #3

Ok, I get that, but is there a way to convert a compessed private key to an uncompressed one?

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May 21, 2012, 05:05:32 PM
 #4

I am pretty sure there is not.

Or rather, you can, but it will result in a different bitcoin address, which makes it useless.

Actually there is no such thing as a compressed private key. Only the public key is compressed. A "compressed private key" merely contains a flag that specifies that the conversion to public key should be done compressed. You can remove the flag... But will not get the same address in the end.

Companies claiming they got hacked and lost your coins sounds like fraud so perfect it could be called fashionable.  I never believe them.  If I ever experience the misfortune of a real intrusion, I declare I have been honest about the way I have managed the keys in Casascius Coins.  I maintain no ability to recover or reproduce the keys, not even under limitless duress or total intrusion.  Remember that trusting strangers with your coins without any recourse is, as a matter of principle, not a best practice.  Don't keep coins online. Use paper or hardware wallets instead.
randomproof
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May 21, 2012, 06:01:56 PM
 #5

Thanks.  That is the problem I am getting.  When I import the private key(from old version of pywallet) I get a different public key.  Oh well.

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May 21, 2012, 08:55:01 PM
 #6

You can now import compressed private keys (see warning)




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