beginning to move sub functions into there own import paths

hash/hash.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"crypto/md5"
+	"fmt"
+	"hash/adler32"
+	"io"
+	"math/rand"
+	"time"
+)
+
+func Rand64() int64 {
+	return rand.Int63()
+}
+
+/* Convinience method for getting md5 sum of a string */
+func GetMd5FromString(blob string) (sum []byte) {
+	h := md5.New()
+	defer h.Reset()
+	io.WriteString(h, blob)
+	return h.Sum(nil)
+}
+
+/* Convinience method for getting md5 sum of some bytes */
+func GetMd5FromBytes(blob []byte) (sum []byte) {
+	h := md5.New()
+	defer h.Reset()
+	h.Write(blob)
+	return h.Sum(nil)
+}
+
+/* get a small, decently unique hash */
+func GetSmallHash() (small_hash string) {
+	h := adler32.New()
+	io.WriteString(h, fmt.Sprintf("%d", time.Now().Unix()))
+	return fmt.Sprintf("%X", h.Sum(nil))
+}