From 2702cf7b0be3f6a5572b1ab2db59a15c66d659f6 Mon Sep 17 00:00:00 2001
From: Ryan Mehri <ryan.mehri1@gmail.com>
Date: Sat, 9 May 2020 14:44:08 -0600
Subject: Add hashing function

---
 hashing/hash.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 hashing/hash.go

(limited to 'hashing')

diff --git a/hashing/hash.go b/hashing/hash.go
new file mode 100644
index 0000000..400659e
--- /dev/null
+++ b/hashing/hash.go
@@ -0,0 +1,26 @@
+package hashing
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"math/big"
+	"time"
+)
+
+const UrlLength = 7
+
+// GenerateURI creates a unique identifier for a paste based on ip and timestamp
+func GenerateURI(ip string) string {
+	timeStamp := time.Now().String()
+	return hashString(ip + timeStamp)[:UrlLength]
+}
+
+// hashes using MD5 and then converts to base 62
+func hashString(text string) string {
+	hash := md5.Sum([]byte(text))
+	hexStr := hex.EncodeToString(hash[:])
+
+	bi := big.NewInt(0)
+	bi.SetString(hexStr, 16)
+	return bi.Text(62)
+}
\ No newline at end of file
-- 
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