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[PULL] private key and wallet export/import
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Topic: [PULL] private key and wallet export/import (Read 39502 times)
runeks
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Re: [PULL] private key and wallet export/import
November 13, 2011, 02:48:40 PM
#141
Adding the following line to bitcoinrpc.cpp
Code:
#include <boost/filesystem.hpp>
fixes the above issue for me.
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casascius
Mike Caldwell
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Re: [PULL] private key and wallet export/import
November 20, 2011, 10:26:21 PM
#142
Quote from: mndrix on November 11, 2011, 11:37:15 PM
Quote from: casascius on November 11, 2011, 06:46:39 PM
It would be fine if this index were built on the beginning of the address (e.g. the first 32 bits) rather than the entire thing, in order to save on space, at the minor expense that a few blocks might occasionally be consulted that don't actually contain transactions for the bitcoin address being searched
If key import is the use case, you could also make the index smaller by pointing at only the first block that mentions an address. If I send coins today, such an index would immediately eliminate 152,000 blocks from the search. I'd guess that imported keys typically have a short time between initial funding and sweeping to a semi-permanent address.
I would recommend the index point to all of the blocks that mention an address, otherwise I could DoS websites offering private key import simply by repeatedly trying to deposit private keys from transactions done a long time ago, even if those keys had no funds.
But there is one place I would put a derivative of the idea you just mentioned: in the -rescan command. I frequently need to import large numbers of private keys. I have patched my own bitcoind so that importprivkey doesn't rescan the wallet immediately, so it returns instantly. After importing keys, I shutdown and do a rescan. I have it so that I can do bitcoind -rescan=150000, that it will only rescan from block 150000 if I know I'm only importing recent keys... saves me tons of time importing private keys in the absence of that index. (in a nutshell, I added an optional "nSkip" parameter to ScanForWalletTransactions()). Of course, having the index would be much sweeter.
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.
K1773R
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Re: [PULL] private key and wallet export/import
December 18, 2011, 04:46:22 AM
#143
just try'd to import/merge a encrypted wallet, i cant neither import a privkey to a encrypted wallet, nor can i merge a unencrypted wallet into a encrypted one.
any plans on implementing this? is there a way (i google'd, couldnt find anything) to decrypt my wallet.dat so i got a unecrypted one where i can add privkeys and later reecrypt it?
greetings
[
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BTC/DVC/TRC/FRC:
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K1773R
bXRZVRQSSXe9N6N2MUFERvrdu6y
ANC/XPM
A
K1773R
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Red Emerald
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Re: [PULL] private key and wallet export/import
December 18, 2011, 07:46:57 AM
#144
Quote from: casascius on November 20, 2011, 10:26:21 PM
Quote from: mndrix on November 11, 2011, 11:37:15 PM
Quote from: casascius on November 11, 2011, 06:46:39 PM
It would be fine if this index were built on the beginning of the address (e.g. the first 32 bits) rather than the entire thing, in order to save on space, at the minor expense that a few blocks might occasionally be consulted that don't actually contain transactions for the bitcoin address being searched
If key import is the use case, you could also make the index smaller by pointing at only the first block that mentions an address. If I send coins today, such an index would immediately eliminate 152,000 blocks from the search. I'd guess that imported keys typically have a short time between initial funding and sweeping to a semi-permanent address.
I would recommend the index point to all of the blocks that mention an address, otherwise I could DoS websites offering private key import simply by repeatedly trying to deposit private keys from transactions done a long time ago, even if those keys had no funds.
But there is one place I would put a derivative of the idea you just mentioned: in the -rescan command. I frequently need to import large numbers of private keys. I have patched my own bitcoind so that importprivkey doesn't rescan the wallet immediately, so it returns instantly. After importing keys, I shutdown and do a rescan. I have it so that I can do bitcoind -rescan=150000, that it will only rescan from block 150000 if I know I'm only importing recent keys... saves me tons of time importing private keys in the absence of that index. (in a nutshell, I added an optional "nSkip" parameter to ScanForWalletTransactions()). Of course, having the index would be much sweeter.
Do you have these rescan changes as another pull request?
I'm also looking forward to this pull request. I want to merge some wallets and would like to use official code.
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Pieter Wuille
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Re: [PULL] private key and wallet export/import
December 19, 2011, 08:05:21 PM
#145
Key import/export has just been merged for 0.6.
Wallet import/export needs a bit of work still, so is delayed.
Key removal support has been dropped, because of too many dangerous side-effects on wallets (in particular in combination with accounts). I'm willing to maintain this as a separate branch, though.
I do Bitcoin stuff.
Pieter Wuille
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Re: [PULL] private key and wallet export/import
December 19, 2011, 08:09:22 PM
#146
Quote from: K1773R on December 18, 2011, 04:46:22 AM
just try'd to import/merge a encrypted wallet, i cant neither import a privkey to a encrypted wallet, nor can i merge a unencrypted wallet into a encrypted one.
any plans on implementing this? is there a way (i google'd, couldnt find anything) to decrypt my wallet.dat so i got a unecrypted one where i can add privkeys and later reecrypt it?
greetings
Did you unlock your wallet? (walletpassphrase RPC command)
I do Bitcoin stuff.
btc_artist
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Re: [PULL] private key and wallet export/import
December 19, 2011, 08:27:51 PM
#147
Quote from: Pieter Wuille on December 19, 2011, 08:05:21 PM
Key import/export has just been merged for 0.6.
Wallet import/export needs a bit of work still, so is delayed.
Key removal support has been dropped, because of too many dangerous side-effects on wallets (in particular in combination with accounts). I'm willing to maintain this as a separate branch, though.
This is great news! This is only import/export of keys, right (not sweeping and sending funds to a new key)?
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DeathAndTaxes
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Gerald Davis
Re: [PULL] private key and wallet export/import
December 19, 2011, 08:36:39 PM
#148
Quote from: Gavin Andresen on May 15, 2011, 12:57:55 AM
Quote from: fergalish on May 14, 2011, 10:07:52 PM
Thoughts?
That'd be exactly when the power goes out.
Ok have wallet generate address, export it it, advise user to print a copy before hitting NEXT. When user hits next it creates the transaction.
Red Emerald
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Re: [PULL] private key and wallet export/import
December 19, 2011, 09:45:40 PM
#149
Quote from: Pieter Wuille on December 19, 2011, 08:05:21 PM
Key import/export has just been merged for 0.6.
Wallet import/export needs a bit of work still, so is delayed.
Key removal support has been dropped, because of too many dangerous side-effects on wallets (in particular in combination with accounts). I'm willing to maintain this as a separate branch, though.
<3
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blueadept
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Re: [PULL] private key and wallet export/import
December 19, 2011, 10:20:56 PM
#150
Quote from: Pieter Wuille on December 19, 2011, 08:05:21 PM
Key import/export has just been merged for 0.6.
Wallet import/export needs a bit of work still, so is delayed.
Key removal support has been dropped, because of too many dangerous side-effects on wallets (in particular in combination with accounts). I'm willing to maintain this as a separate branch, though.
This seems to work great for me on an unencrypted wallet with vanity-gen generated keys. Thanks!
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K1773R
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Re: [PULL] private key and wallet export/import
December 20, 2011, 02:37:34 AM
#151
i hope it will work with encrypted wallets too, pywallet cant do this atm so this would be the only alternative.
[
GPG Public Key
]
BTC/DVC/TRC/FRC:
1
K1773R
bXRZVRQSSXe9N6N2MUFERvrdu6y
ANC/XPM
A
K1773R
TmRKtvbKBCrUu95UQg5iegrqyeA
NMC:
N
K1773R
zv8b4ugmCgX789PbjewA9fL9Dy1
LTC:
L
Ki773R
BuPepQH8E6Zb1ponoCvgbU7hHmd
EMC:
E
K1773R
xUes1HX1YAGMZ1xVYBBRUCqfDoF
BQC:
b
K1773R
1APJz4yTgRkmdKQhjhiMyQpJgfN
SgtSpike
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Re: [PULL] private key and wallet export/import
December 20, 2011, 02:46:39 AM
#152
Quote from: Pieter Wuille on December 19, 2011, 08:05:21 PM
Key import/export has just been merged for 0.6.
Wallet import/export needs a bit of work still, so is delayed.
Key removal support has been dropped, because of too many dangerous side-effects on wallets (in particular in combination with accounts). I'm willing to maintain this as a separate branch, though.
Wheeee!
This, combined with the offline transaction creation, should finally make one of my projects viable!
Pieter Wuille
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Re: [PULL] private key and wallet export/import
December 20, 2011, 07:38:22 AM
#153
Quote from: K1773R on December 20, 2011, 02:37:34 AM
i hope it will work with encrypted wallets too, pywallet cant do this atm so this would be the only alternative.
It does. You do need to unlock the wallet via RPC first though, via walletpassphrase().
I do Bitcoin stuff.
K1773R
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Re: [PULL] private key and wallet export/import
December 20, 2011, 07:45:02 AM
#154
Quote from: Pieter Wuille on December 20, 2011, 07:38:22 AM
Quote from: K1773R on December 20, 2011, 02:37:34 AM
i hope it will work with encrypted wallets too, pywallet cant do this atm so this would be the only alternative.
It does. You do need to unlock the wallet via RPC first though, via walletpassphrase().
great
finally a solution
[
GPG Public Key
]
BTC/DVC/TRC/FRC:
1
K1773R
bXRZVRQSSXe9N6N2MUFERvrdu6y
ANC/XPM
A
K1773R
TmRKtvbKBCrUu95UQg5iegrqyeA
NMC:
N
K1773R
zv8b4ugmCgX789PbjewA9fL9Dy1
LTC:
L
Ki773R
BuPepQH8E6Zb1ponoCvgbU7hHmd
EMC:
E
K1773R
xUes1HX1YAGMZ1xVYBBRUCqfDoF
BQC:
b
K1773R
1APJz4yTgRkmdKQhjhiMyQpJgfN
casascius
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Re: [PULL] private key and wallet export/import
December 20, 2011, 07:53:25 AM
#155
Now all we need is a way to get rid of the block chain scan...
either an index built on first use, or perhaps an abbreviated one maintained in memory so it is only built once per invocation of bitcoind (e.g. a tree/hashtable that maps the first 32bits of hash160 to a list of pointers to block indexes, so memory usage isn't ridiculous)
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.
deepceleron
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Re: [PULL] private key and wallet export/import
December 20, 2011, 08:09:37 AM
Last edit: December 20, 2011, 08:24:26 AM by deepceleron
#156
Quote from: casascius on December 20, 2011, 07:53:25 AM
Now all we need is a way to get rid of the block chain scan...
either an index built on first use, or perhaps an abbreviated one maintained in memory so it is only built once per invocation of bitcoind (e.g. a tree/hashtable that maps the first 32bits of hash160 to a list of pointers to block indexes, so memory usage isn't ridiculous)
Maybe Bitcoin shouldn't automatically rescan after a key import, but the new "rescan" button starts blinking to insist you should do it, and a per-address flag is set in the wallet to indicate the block chain hasn't been analyzed yet for that address's true balance. Progress bar during online rescan, etc. I suppose a method for RPC also needs to be implemented, or maybe auto-rescan is limited to once every 15 minutes or such.
A full index could be significant in size. When it gets messed up do we then get to do a -reindex? How about when it is corrupted and points to nonexistent blocks and crashes bitcoin, etc.
netrin
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Re: [PULL] private key and wallet export/import
December 20, 2011, 05:07:07 PM
#157
How is it that there is no index already? I'd like to see an index for native client firstbits support.
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SgtSpike
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Re: [PULL] private key and wallet export/import
December 20, 2011, 05:51:16 PM
#158
Quote from: netrin on December 20, 2011, 05:07:07 PM
How is it that there is no index already? I'd like to see an index for native client firstbits support.
Maybe it could be implemented into the Electrum client. I know he was planning to implement firstbits lookups in the GUI, so maintaining an index shouldn't be too far from it.
https://bitcointalk.org/index.php?topic=50936
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Re: [PULL] private key and wallet export/import
December 20, 2011, 06:01:15 PM
#159
But how does the local blockchain work if the addresses are not already indexed? I understand the client/wallet only keeps record of its own addresses and linked transactions, but... really? I should think that firstbits (or first ~48 bits) would make an excellent Primary key (with a highly unlikely collision list). How much extra data would such an address index require? Wouldn't that greatly simplifying and modularize the design?
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blueadept
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Re: [PULL] private key and wallet export/import
December 20, 2011, 06:35:56 PM
#160
Quote from: netrin on December 20, 2011, 06:01:15 PM
But how does the local blockchain work if the addresses are not already indexed? I understand the client/wallet only keeps record of its own addresses and linked transactions, but... really? I should think that firstbits (or first ~48 bits) would make an excellent Primary key (with a highly unlikely collision list). How much extra data would such an address index require? Wouldn't that greatly simplifying and modularize the design?
The local blockchain indexes transaction hashes. Transaction inputs reference those transaction hashes and then the matching outputs are checked.
Eventually, if the idea of splitting the wallet part from the peer-to-peer portion that communicates with other nodes and keeps track of the blockchain becomes reality, addresses will need to be indexed for fast searching anyway. Implementing that now would speed up key import, though.
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===> Konu Dışı
===> Yeni Başlayanlar & Yardım
===> Buluşmalar
=> Other languages/locations
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