Cracking a BIP38 password, with many BIP38 samples about bip38 HOT 3 CLOSED

@rterwedo I suspect what you are asking is if there is a known plain text attack against BIP38?

With the assumptions that you have the plain-text AND cipher-text for a given private key, but only the cipher-text for other private keys.

from bip38.

@dcousens Essentially yes. There are tools (such as btcrecover) where you can use these items to go after recovered wallets, but most everything I have seen assumes the wallet is 100% encrypted, or 100% complete (ie not corrupted). A plain text attack would cover the middle ground, assuming its feasible. (Is it in your estimation?) I am working on researching what would be the fastest setup to do this, given that a decent GPU setup of btcrecover can do ~1k-50k pwd / s.

EDIT: I have seen its not susceptible to known plain text attack, but - its possible that would be a faster method than say a btcrecover setup. ie encrypting and comparing to known values etc

from bip38.

Hello i hope someone can help me please, basically i have made an offline paper wallet. lets bare in mind i have no printer or camera phone. Anyway i made the paper wallet offline.I deleted a few digits offline and wrote them down safely Came back online..cleared my browser and cache etc. I made a note of the public key..and sent funds from Paxful.com to my public key in my paper wallet. I even checked the transaction on block chain explorer it had been sent. Now i have my private key...Ive just read it should always start with a number 5..well my private key does not start with a number 5. secondly it seems longer than my public key. what i want to know is can i withdraw or spend or send out again or have i lost them because i never scanned them?

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