updating refs, finished key gen buffer

sshkeys/bufutils.go

@@ -18,9 +18,15 @@
 
 package sshkeys
 
+import (
+	`encoding/binary`
+
+	`github.com/go-restruct/restruct`
+)
+
 // These are just here to save  some typing.
 func getBytelenStr(s string) []byte {
-	return getByteInt(len(s))
+	return getBytelenByteArr([]byte(s))
 }
 
 func getBytelenByteArr(b []byte) []byte {
@@ -28,5 +34,15 @@ func getBytelenByteArr(b []byte) []byte {
 }
 
 func getByteInt(i int) []byte {
-	return []byte{byte(i)}
+	// This does not work. Despite being a uint32, golang always only writes it as 1 byte instead of 4.
+	// ...Despite it occupying 4 bytes in RAM.
+	// Luckily we can reuse this quick one-liner in getSingleByteInt().
+	// return []byte{byte(i)}
+	b := make([]byte, 4)
+	b, _ = restruct.Pack(binary.BigEndian, uint32(i))
+	return b
 }
+
+func getSingleByteInt(i int) []byte {
+	return []byte{byte(uint32(i))}
+}