Possibility of recovering a private key missing a lot of characters

[emanyaster]

Is it possible for the 52 character private key to find 19 characters missing?

[Coding-Enthusiast]

The current algorithm has to check all the variations of the WIF^note. To know how many keys it checks you can compute 58^x where x is the number of missing characters. For example with 19 missing chars that would be 3e+33.
Using only CPU between 20 to 40 million keys are checked per second (it varies based on CPU and position of the missing char). You can compute the time it takes to find the key by knowing these two values.
In short best case scenario is currently finding a key missing up to 7 characters which would take less than a day.

note: There is a special case that all missing characters are from the end of the given WIF, in this case FinderOuter can find the correct key missing up to 11 character within seconds.

[emanyaster]

yes 19 characters are missing from the end

[emanyaster]

thanks for your reply

[emanyaster]

I have a private key that starts with K and unfortunately 19 characters are missing from the end, what is the estimated time for you?

[emanyaster]

It has been working continuously for 4 days but unfortunately it has yielded no results.

[Coding-Enthusiast]

I have a private key that starts with K and unfortunately 19 characters are missing from the end, what is the estimated time for you?

The special case only works for up to 11 characters from the end. With 19 it will be as I said above.

[IBman1]

Is it possible for the 52 character private key to find 19 characters missing?

yes it is possible, but it woud take long time not less than a month. i had similar experiance where i had to build it byte by byte. you can decode the key and build it manualy. once you are done you have to brute force it to recover the missing 9 bytes.

[emanyaster]

Well, can you help IBman1 ***@***.***>, 30 May 2021 Paz, 03:49 tarihinde şunu yazdı:

…

Is it possible for the 52 character private key to find 19 characters missing? yes it is possible, but it woud take long time not less than a month. i had similar experiance where i had to build it byte by byte. you can decode the key and build it manualy. once you are done you have to brute force it to recover the missing 9 bytes. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#20 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ASKPOPKJUYBFGCPALUQBZ3LTQGDP3ANCNFSM4YU4TGTA> .

[Coding-Enthusiast]

@emanyaster Be careful who you trust and never send your private key to anyone specially when contacted privately through Email.

[emanyaster]

Thanks for the tip! 31 May 2021 Pzt 04:26 tarihinde Coding Enthusiast ***@***.***> şunu yazdı:

…

@emanyaster <https://github.com/emanyaster> Be careful who you trust and never send your private key to anyone specially when contacted privately through Email. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#20 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ASKPOPLQMU5LOP7CAMIJLZ3TQLQUDANCNFSM4YU4TGTA> .

[jlfv777]

I have 18 btc in my address and first 12 keys is erased in wif format is it possible to get find that first 12key

[sokary2004]

I have 18 btc in my address and first 12 keys is erased in wif format is it possible to get find that first 12key

yes you can

[iamchaay]

Hello, I have a private key or 4 characters are missing at the beginning like that for example KzuH****5qfHezWings3pQueKxBwAhHrieURgMuwubRhN2eumrMT (it's not this key it's just an example). Is it possible to find the 4 missing characters? If so, in how long?

[Coding-Enthusiast]

Hello, I have a private key or 4 characters are missing at the beginning like that for example KzuH****5qfHezWings3pQueKxBwAhHrieURgMuwubRhN2eumrMT (it's not this key it's just an example). Is it possible to find the 4 missing characters? If so, in how long?

Yes. Finding 4 missing characters, regardless of their position, should take less than 5 seconds assuming you know the correct position of those missing characters and the rest of the characters are valid.

[iamchaay]

Yes. Finding 4 missing characters, regardless of their position, should take less than 5 seconds assuming you know the correct position of those missing characters and the rest of the characters are valid.

The 4 missing characters are in the same place as in the example I showed at the top and the other characters are valid. thank you very much for your answer.

[iamchaay]

@Coding-Enthusiast is it possible to find the end of the private key without knowing the bitcoin wallet address?

[Coding-Enthusiast]

@Coding-Enthusiast is it possible to find the end of the private key without knowing the bitcoin wallet address?

It depends on how many characters are missing from the end. With few characters (up to 6) it can be recovered in an instant and without needing the address. But as the number of missing characters grow, the number of valid chars in those missing positions grow too.
For example with 10 chars missing at the end, we have millions of valid permutations so there needs to be an address to check each of them against that and eliminate irrelevant ones.

In the "Missing Base58" option click on the Example button and see examples 3, 4 and 5.