dkforest

commit 3e65e1687975c408d354091345907f45e74603c4
parent ec6398f7712ab32dd37131f179113fd0eead597e
Author: n0tr1v <n0tr1v@protonmail.com>
Date:   Sat, 27 May 2023 10:07:56 -0700

pow

Diffstat:
A
cmd/pow/main.go
 | 
29
+++++++++++++++++++++++++++++

1 file changed, 29 insertions(+), 0 deletions(-)
diff --git a/cmd/pow/main.go b/cmd/pow/main.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	// ./pow n0tr1v
+	// 196598046 000000013f9472ce72d6ef66b10ff25db702a712484d72c157d52b260872686e
+	username := os.Args[1]
+	difficulty := 7
+	prefix := strings.Repeat("0", difficulty)
+	var nonce int
+	var hashed string
+	for {
+		h := sha256.Sum256([]byte(username + "_" + strconv.Itoa(nonce)))
+		hashed = hex.EncodeToString(h[:])
+		if strings.HasPrefix(hashed, prefix) {
+			fmt.Printf("%d %s\n", nonce, hashed)
+			return
+		}
+		nonce++
+	}
+}