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package main
import (
"crypto/sha256"
"golang.org/x/crypto/ripemd160"
"fmt"
"math/big"
"encoding/hex"
)
var b58Alphabet = []byte("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz")
func Base58Encode(input []byte) []byte{
var result []byte
x:= big.NewInt(0).SetBytes(input)
base := big.NewInt(int64(len(b58Alphabet)))
zero := big.NewInt(0)
mod := &big.Int{}
for x.Cmp(zero) != 0 {
x.DivMod(x,base,mod)
result = append(result, b58Alphabet[mod.Int64()])
}
ReverseBytes(result)
for _,b:=range input{
if b ==0x00{
result = append([]byte{b58Alphabet[0]},result...)
}else{
break
}
}
return result
}
func ReverseBytes(data []byte){
for i,j :=0,len(data) - 1;i<j;i,j = i+1,j - 1{
data[i],data[j] = data[j],data[i]
}
}
func generateAddress(pubkey []byte) []byte{
pubkeyHash256 :=sha256.Sum256(pubkey)
PIPEMD160Hasher := ripemd160.New()
_,err:= PIPEMD160Hasher.Write(pubkeyHash256[:])
if err!=nil{
fmt.Println("error")
}
publicRIPEMD160 := PIPEMD160Hasher.Sum(nil)
versionPayload := append([]byte{0x00},publicRIPEMD160...)
firstSHA := sha256.Sum256(versionPayload)
secondSHA := sha256.Sum256(firstSHA[:])
checksum:=secondSHA[:4]
fullPayload := append(versionPayload,checksum...)
address:=Base58Encode(fullPayload)
return address
}
func main(){
publickpey,_:=hex.DecodeString("D4A6C78C0B13DBD8A07AAB17C7D79ED9CB2523B63EDAC4E7CACE93C6B66CEDC7918EE0E174E8B2B61468D0E6CAA099710EF72094ACBD70BDAE3D8E42C617ACC6")
address:=generateAddress(publickpey)
fmt.Printf("%s",address)
}
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