Topic: Armory PaperBackup (Read 140 times)
ok -> thanks again !
im new here - is it against the rules to send/post btc adresses here on the forum?
No, it's not against the rules to post BTC addresses... but depending on your personal level of "paranoia", it's advisable to consider what you do and don't share from a privacy point of view 
Note that "begging" (ie. asking for people to send you money) is against the forum rules... so posting an address and saying "please send me money" would be against the rules.
Refer "Rule 7" in the "Unofficial Forum Rules": https://bitcointalksearch.org/topic/unofficial-list-of-official-bitcointalkorg-rules-guidelines-faq-703657
im new here - is it against the rules to send/post btc adresses here on the forum?
I don't think so, some people post theirs in their signature even.
Thanks a lot for the help
!i managed to manually brute force it
16x16 possible letters per line - so 4x256
aaaa - adaa - aeaa ------ > awaa - daaa - ddaa - deaa and so on ..
if its the correct first 2 letters the last 2 dont matter - of the 256 trys per line
i got between 15-20 working combinations but only one was not producing errors when changing
the last 2 from aa to something else
im new here - is it against the rules to send/post btc adresses here on the forum?
I've reworked this code into the C++ side recently, I may be confusing the old functionality with the new one. He could get his wallet to restore by modifying the Python code to ignore checksum errors.
The last 4 characters are checksums. The actual 16 bytes of data per line are encoded in the first 8 "words". You can write gibberish for the last 4 characters if you want. Armory will complain the checksums are invalid and will ask you to explicitly check the proposed wallet id with the one written on your backup. If the two match, you're all good.
I have tried restoring a dummy wallet using random characters for the last 4... and I get an error:
This happens if I use blanks, or just random like aaaa... or just repeat one of the other 4 letter groups... it seems it'll only work if I get at least the first 2 letters of the checksum correct, then the last 2 can be anything.
Last 4 characters shouldn't affect the final ID. Maybe you are getting combinations that have a "repair" candidate. At any rate, you can only use characters from the narrow set.
This is the character set:
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2246
This is the checksum calculation:
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2265
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2404
The hash function is 2 passes of sha256
This is the character set:
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2246
This is the checksum calculation:
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2265
https://github.com/goatpig/BitcoinArmory/blob/master/armoryengine/ArmoryUtils.py#L2404
The hash function is 2 passes of sha256
It took some time to get 4 characters per line that worked
problem is when i change the last 4 it also changes the Wallet uniqe id
and they dont match sadly
how is the checksum per line calculated?
The last 4 characters are checksums. The actual 16 bytes of data per line are encoded in the first 8 "words". You can write gibberish for the last 4 characters if you want. Armory will complain the checksums are invalid and will ask you to explicitly check the proposed wallet id with the one written on your backup. If the two match, you're all good.
Hi
I have Problems with one of my old Armory PaperBackups
I have the Wallet Unique Id and MainAddress
and the Password
Problem is i dont have the File any longer
and the Paper is kinda damaged on the edge
last 4 digits in every Line not readable
a = known x = unknown/not readable
RootKey
aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa xxxx
aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa xxxx
ChainCode
aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa xxxx
aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa xxxx
help would be really appreciated
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