From cbb880fdecca39b2dffc6b1d32c9c326e3b56b7f Mon Sep 17 00:00:00 2001
From: Keith Shaw <github@keithws.net>
Date: Mon, 27 Mar 2017 15:51:14 -0700
Subject: [PATCH] use sha1 instead of Base64 for files names for keys

---
 index.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 6f935c6..7bcef96 100644
--- a/index.js
+++ b/index.js
@@ -13,6 +13,7 @@ var os = require('os');
 var debug = require('debug')('async-disk-cache');
 var zlib = require('zlib');
 var heimdall = require('heimdalljs');
+var crypto = require('crypto');
 
 var CacheEntry = require('./lib/cache-entry');
 var Metric = require('./lib/metric');
@@ -246,7 +247,7 @@ defineFunction(Cache.prototype, 'remove', function(key) {
  * @returns the path where the key's value may reside
  */
 defineFunction(Cache.prototype, 'pathFor', function(key) {
-  return path.join(this.root, new Buffer(key).toString('base64'));
+  return path.join(this.root, crypto.createHash('sha1').update(key).digest('hex'));
 });
 
 /*