Title: WIF Checksum Checking Post by: Aurik on February 07, 2017, 02:35:29 AM Hi there, im not a programmer, so i need your help to update this code for me, as it is not working anymore.
Would be really nice if someone could invest a couple of minutes, as this should not take you too long. Written in Go: ------------------------------------- *START* ------------------------------------- package main import ( "fmt" "github.com/conformal/btcutil" "github.com/conformal/btcwire" ) func main() { step1 := "5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ" fmt.Printf("1 - Wallet import format: %s\n", step1) step2 := btcutil.Base58Decode(step1) fmt.Printf("2 - Converting WIF as Base58 string to byte array: %x\n", step2) step3 := step2[:len(step2)-4] fmt.Printf("3 - Dropping last 4 checksum bytes from 2: %x\n", step3) step5 := btcwire.DoubleSha256(step3) fmt.Printf("4/5 - Double SHA-256 hash of 3: %x\n", step5) fmt.Printf("6 - First 4 bytes of 5, this is the calculated checksum: %x\n", step5[:4]) step7 := step2[len(step2)-4:] fmt.Printf("7 - Take the last 4 bytes of 2, this is the original checksum: %x\n", step7) } And the result of running that program: 1 - Wallet import format: 5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ 2 - Converting WIF as Base58 string to byte array: 800c28fca386c7a227600b2fe50b7cae11ec86d3bf1fbe471be89827e19d72aa1d507a5b8d 3 - Dropping last 4 checksum bytes from 2: 800c28fca386c7a227600b2fe50b7cae11ec86d3bf1fbe471be89827e19d72aa1d 4/5 - Double SHA-256 hash of 3: 507a5b8dfed0fc6fe8801743720cedec06aa5c6fca72b07c49964492fb98a714 6 - First 4 bytes of 5, this is the calculated checksum: 507a5b8d 7 - Take the last 4 bytes of 2, this is the original checksum: 507a5b8d ------------------------------------- *END* ------------------------------------- Title: Re: WIF Checksum Checking Post by: achow101 on February 07, 2017, 03:17:00 AM That looks correct. What's not working about it?
Title: Re: WIF Checksum Checking Post by: Aurik on February 07, 2017, 02:18:54 PM Seems like the Library at github.com/conformal/btcutil changed something.
First off, "github.com/btcsuite/btcutil" seems to be correct now, but then again its not working. Can you confirm that this is working just this way for you (on windows?) I know, windows sucks, but as i said im not a programmer so i have to work with what i have :) Edit: concrete, i get this error: .\test.go:12: undefined: btcutil.Base58Decode Edit2: If i change "btcutil.Base58Decode" to "btcutli.DecodeWIF" I get the error .\test.go:12: multiple-value btcutil.DecodeWIF() in single-value context Title: Re: WIF Checksum Checking Post by: achow101 on February 07, 2017, 02:47:46 PM I am not familiar with go, I just looked at the logic.
It looks like you should be using btcutil.base58.Decode() Title: Re: WIF Checksum Checking Post by: Aurik on February 07, 2017, 03:02:43 PM Tried that too, was not working.
But ive got it now, it is step2 := base58.Decode(step1) and u have to include "github.com/conformal/btcutil/base58" instead. Next problem: the wire-package was moved to the the btcd package, so step5 := btcwire.DoubleSha256(step3) fmt.Printf("4/5 - Double SHA-256 hash of 3: %x\n", step5) isnt working anymore. Im looking for the DoubleSha256 func in the btcd/wire dictionary, but i cant find it... Title: Re: WIF Checksum Checking Post by: achow101 on February 07, 2017, 03:11:30 PM I think this is what you are looking for: https://github.com/btcsuite/btcd/blob/ab0f30c00d17bb7766c06174d77661443df08973/chaincfg/chainhash/hashfuncs.go
Title: Re: WIF Checksum Checking Post by: Aurik on February 07, 2017, 03:21:53 PM Seems correct, gonna check it out now. Thanks so far :)
Edit 1: Yes, it is working! Thank you very much again!! |