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Title: Anyone know how to bip38 encrypt an already-generated private key? Post by: fizgig on November 20, 2013, 11:22:41 PM All the tools I see out there are for new keys and I'd like to avoid the trouble of sweeping the coins from my existing address to a new one.
Title: Re: Anyone know how to bip38 encrypt an already-generated private key? Post by: UnaNos on November 20, 2013, 11:41:51 PM Try: http://www.bit2factor.org
Click on "Generate & Encrypt Private Key" at the bottom, then provide a Passphrase and Private Key. You can download and use it locally if you don't trust it: https://github.com/mannkind/bit2factor.org Title: Re: Anyone know how to bip38 encrypt an already-generated private key? Post by: fizgig on November 20, 2013, 11:57:17 PM Neat. Haven't encountered that page before. To test it, I just did the following:
1. I made a BIP38 address in bitaddress.org with the passphrase "tucker" (no quotes). I got this: 6PfRsAUt4GoxgvLpfMAuPZnxK452gvdmbY2KcfBHFFJCQJKgGPZ9pSpdZH, with (apparently uncompressed) bitcoin address 1DoH8sE1twMQybnoFWpw7PZnJjNCuiDrfF 2. I took that encrypted address to the details tab of that same webpage and entered "tucker" to get the decrypted private key of: L2xcepU1mUtYkbZeihcw1znmajibjgf6koG8szWQM4cpWGAjoqVb and a compressed addressed of 1CMwWVSH1fkifpbrkknYW1NCpk3pkD99fs (the uncompressed address given here matched what was shown in step 1 as expected) 3. I took the decrypted private key over to bit2factor.org and asked it to encrypt it with the passphrase "tucker". I got the same compressed bitcoin address of 1CMwWVSH1fkifpbrkknYW1NCpk3pkD99fs but the bip38 private key is shown as 6PYWAF9qqjk6ytZFbepaSDDk9oGb5gBwwgUP8cnaCgUa7LR4T6SJX9pLCQ. Does anyone know why I didn't get the same bip38 key from bit2factor that I got from bitaddress.org? Title: Re: Anyone know how to bip38 encrypt an already-generated private key? Post by: fizgig on November 21, 2013, 12:20:57 AM For fun, I took the different BIP38 address generated by bit2factor.org and ran it through the details tab of bitaddress.org. Sure enough, I get the same compressed (but unencrypted) private key that I started with.
So, I guess the system works but I just don't know how a private key can have more than one BIP38 address. Title: Re: Anyone know how to bip38 encrypt an already-generated private key? Post by: Ozymandias on November 21, 2013, 12:36:56 AM For fun, I took the different BIP38 address generated by bit2factor.org and ran it through the details tab of bitaddress.org. Sure enough, I get the same compressed (but unencrypted) private key that I started with. So, I guess the system works but I just don't know how a private key can have more than one BIP38 address. Wouldn't this technically be considered a collision since there are two different private keys for one address? Title: Re: Anyone know how to bip38 encrypt an already-generated private key? Post by: flatfly on November 21, 2013, 10:35:17 AM For fun, I took the different BIP38 address generated by bit2factor.org and ran it through the details tab of bitaddress.org. Sure enough, I get the same compressed (but unencrypted) private key that I started with. So, I guess the system works but I just don't know how a private key can have more than one BIP38 address. Wouldn't this technically be considered a collision since there are two different private keys for one address? Doesn't look like a collision. IIRC, BIP38 (which is currently just a draft, by the way - things could still change) uses random salts each time, thus yielding different results. Also, a little-known (and perhaps irrelevant) fact: there are roughly 2^96 different private keys for each address. Yes, it's a little mindblowing at first... |