diff --git a/cli/cli b/cli/cli
deleted file mode 100755
index 9f2153f..0000000
Binary files a/cli/cli and /dev/null differ
diff --git a/cli/main.go b/cli/main.go
index 852f583..dc397bf 100644
--- a/cli/main.go
+++ b/cli/main.go
@@ -1,10 +1,10 @@
 package main
 
 import (
-  "os"
-  "fmt"
-  "encoding/hex"
+	"encoding/hex"
+	"fmt"
 	"github.com/boltcard/boltcard/crypto"
+	"os"
 )
 
 // inspired by parse_request() in lnurlw_request.go
@@ -40,50 +40,50 @@ func check_cmac(uid []byte, ctr []byte, k2_cmac_key []byte, cmac []byte) (bool,
 
 func main() {
 
-  fmt.Println("-- bolt card crypto test vectors --")
-  fmt.Println()
+	fmt.Println("-- bolt card crypto test vectors --")
+	fmt.Println()
 
-  args := os.Args[1:]
+	args := os.Args[1:]
 
-  if(len(args) != 4) {
-    fmt.Println("error: should have arguments for: p c aes_decrypt_key aes_cmac_key")
-    os.Exit(1)
-  }
+	if len(args) != 4 {
+		fmt.Println("error: should have arguments for: p c aes_decrypt_key aes_cmac_key")
+		os.Exit(1)
+	}
 
-// get from args
-  p_hex := args[0]
-  c_hex := args[1]
-  aes_decrypt_key_hex := args[2]
-  aes_cmac_key_hex := args[3]
+	// get from args
+	p_hex := args[0]
+	c_hex := args[1]
+	aes_decrypt_key_hex := args[2]
+	aes_cmac_key_hex := args[3]
 
-  fmt.Println("p = ", p_hex)
-  fmt.Println("c = ", c_hex)
-  fmt.Println("aes_decrypt_key = ", aes_decrypt_key_hex)
-  fmt.Println("aes_cmac_key = ", aes_cmac_key_hex)
-  fmt.Println()
+	fmt.Println("p = ", p_hex)
+	fmt.Println("c = ", c_hex)
+	fmt.Println("aes_decrypt_key = ", aes_decrypt_key_hex)
+	fmt.Println("aes_cmac_key = ", aes_cmac_key_hex)
+	fmt.Println()
 
-  p, err := hex.DecodeString(p_hex)
+	p, err := hex.DecodeString(p_hex)
 
 	if err != nil {
-    fmt.Println("ERROR: p not valid hex", err)
-    os.Exit(1)
+		fmt.Println("ERROR: p not valid hex", err)
+		os.Exit(1)
 	}
 
 	c, err := hex.DecodeString(c_hex)
 
 	if err != nil {
-    fmt.Println("ERROR: c not valid hex", err)
-    os.Exit(1)
+		fmt.Println("ERROR: c not valid hex", err)
+		os.Exit(1)
 	}
 
 	if len(p) != 16 {
-    fmt.Println("ERROR: p length not valid")
-    os.Exit(1)
+		fmt.Println("ERROR: p length not valid")
+		os.Exit(1)
 	}
 
 	if len(c) != 8 {
-    fmt.Println("ERROR: c length not valid")
-    os.Exit(1)
+		fmt.Println("ERROR: c length not valid")
+		os.Exit(1)
 	}
 
 	// decrypt p with aes_decrypt_key
@@ -91,20 +91,20 @@ func main() {
 	aes_decrypt_key, err := hex.DecodeString(aes_decrypt_key_hex)
 
 	if err != nil {
-    fmt.Println("ERROR: DecodeString() returned an error", err)
-    os.Exit(1)
+		fmt.Println("ERROR: DecodeString() returned an error", err)
+		os.Exit(1)
 	}
 
 	dec_p, err := crypto.Aes_decrypt(aes_decrypt_key, p)
 
 	if err != nil {
-    fmt.Println("ERROR: Aes_decrypt() returned an error", err)
-    os.Exit(1)
+		fmt.Println("ERROR: Aes_decrypt() returned an error", err)
+		os.Exit(1)
 	}
 
 	if dec_p[0] != 0xC7 {
-    fmt.Println("ERROR: decrypted data does not start with 0xC7 so is invalid")
-    os.Exit(1)
+		fmt.Println("ERROR: decrypted data does not start with 0xC7 so is invalid")
+		os.Exit(1)
 	}
 
 	uid := dec_p[1:8]
@@ -115,29 +115,29 @@ func main() {
 	uid_str := hex.EncodeToString(uid)
 	ctr_str := hex.EncodeToString(ctr)
 
-  fmt.Println("decrypted card data : uid", uid_str, ", ctr", ctr_str)
+	fmt.Println("decrypted card data : uid", uid_str, ", ctr", ctr_str)
 
 	// check cmac
 
 	aes_cmac_key, err := hex.DecodeString(aes_cmac_key_hex)
 
 	if err != nil {
-    fmt.Println("ERROR: aes_cmac_key is not valid hex", err)
-    os.Exit(1)
+		fmt.Println("ERROR: aes_cmac_key is not valid hex", err)
+		os.Exit(1)
 	}
 
 	cmac_valid, err := check_cmac(uid, ctr, aes_cmac_key, c)
 
 	if err != nil {
-    fmt.Println("ERROR: check_cmac() returned an error", err)
-    os.Exit(1)
+		fmt.Println("ERROR: check_cmac() returned an error", err)
+		os.Exit(1)
 	}
 
 	if cmac_valid == false {
-    fmt.Println("ERROR: cmac incorrect")
-    os.Exit(1)
+		fmt.Println("ERROR: cmac incorrect")
+		os.Exit(1)
 	}
 
-  fmt.Println("cmac validates ok")
-  os.Exit(0)
+	fmt.Println("cmac validates ok")
+	os.Exit(0)
 }