How to use BIP38 to encrypt a pre-determined private key?

[chriswilmer]

Sorry if this has been discussed previously, I couldn't find it.

I downloaded Mike Caldwell's Bitcoin utility... but I can't figure out how to input a private key and then encrypt it according the BIP38 protocol. Does anyone here know how to do this?

-Chris

[dserrano5]

I downloaded Mike Caldwell's Bitcoin utility... but I can't figure out how to input a private key and then encrypt it according the BIP38 protocol. Does anyone here know how to do this?

You can use http://bit2factor.org or pybrainwallet.

[chriswilmer]

Aha! Perfectomungo!

[agent13]

bit2factor.org looks interesting for encrypting prior keys. Is it considered safe and who wrote it? There is a random element to the BIP38 process, so the output is always different.

[chriswilmer]

The output is always the same if you supply a private key. I tested it.

[agent13]

The output is always the same if you supply a private key. I tested it.

Enter the same private key and passphrase into bitaddress and bit2factor. You will get a different result, but they both produce the same unencrypted result.

[chriswilmer]

The output is always the same if you supply a private key. I tested it.

Enter the same private key and passphrase into bitaddress and bit2factor. You will get a different result, but they both produce the same unencrypted result.

Ah, OK. I meant that I got the same result on bit2factor when I hit "generate" repeatedly with the same private key and passphrase. Thanks for clarifying, good to know.