1 files changed, 126 insertions, 0 deletions
diff --git a/node_modules/hawk/lib/crypto.js b/node_modules/hawk/lib/crypto.js
new file mode 100755
index 000000000..d3c8244a9
--- /dev/null
+++ b/node_modules/hawk/lib/crypto.js
@@ -0,0 +1,126 @@
+// Load modules
+
+var Crypto = require('crypto');
+var Url = require('url');
+var Utils = require('./utils');
+
+
+// Declare internals
+
+var internals = {};
+
+
+// MAC normalization format version
+
+exports.headerVersion = '1';                        // Prevent comparison of mac values generated with different normalized string formats
+
+
+// Supported HMAC algorithms
+
+exports.algorithms = ['sha1', 'sha256'];
+
+
+// Calculate the request MAC
+
+/*
+    type: 'header',                                 // 'header', 'bewit', 'response'
+    credentials: {
+        key: 'aoijedoaijsdlaksjdl',
+        algorithm: 'sha256'                         // 'sha1', 'sha256'
+    },
+    options: {
+        method: 'GET',
+        resource: '/resource?a=1&b=2',
+        host: 'example.com',
+        port: 8080,
+        ts: 1357718381034,
+        nonce: 'd3d345f',
+        hash: 'U4MKKSmiVxk37JCCrAVIjV/OhB3y+NdwoCr6RShbVkE=',
+        ext: 'app-specific-data',
+        app: 'hf48hd83qwkj',                        // Application id (Oz)
+        dlg: 'd8djwekds9cj'                         // Delegated by application id (Oz), requires options.app
+    }
+*/
+
+exports.calculateMac = function (type, credentials, options) {
+
+    var normalized = exports.generateNormalizedString(type, options);
+
+    var hmac = Crypto.createHmac(credentials.algorithm, credentials.key).update(normalized);
+    var digest = hmac.digest('base64');
+    return digest;
+};
+
+
+exports.generateNormalizedString = function (type, options) {
+
+    var resource = options.resource || '';
+    if (resource &&
+        resource[0] !== '/') {
+
+        var url = Url.parse(resource, false);
+        resource = url.path;                        // Includes query
+    }
+
+    var normalized = 'hawk.' + exports.headerVersion + '.' + type + '\n' +
+                     options.ts + '\n' +
+                     options.nonce + '\n' +
+                     (options.method || '').toUpperCase() + '\n' +
+                     resource + '\n' +
+                     options.host.toLowerCase() + '\n' +
+                     options.port + '\n' +
+                     (options.hash || '') + '\n';
+
+    if (options.ext) {
+        normalized += options.ext.replace('\\', '\\\\').replace('\n', '\\n');
+    }
+
+    normalized += '\n';
+
+    if (options.app) {
+        normalized += options.app + '\n' +
+                      (options.dlg || '') + '\n';
+    }
+
+    return normalized;
+};
+
+
+exports.calculatePayloadHash = function (payload, algorithm, contentType) {
+
+    var hash = exports.initializePayloadHash(algorithm, contentType);
+    hash.update(payload || '');
+    return exports.finalizePayloadHash(hash);
+};
+
+
+exports.initializePayloadHash = function (algorithm, contentType) {
+
+    var hash = Crypto.createHash(algorithm);
+    hash.update('hawk.' + exports.headerVersion + '.payload\n');
+    hash.update(Utils.parseContentType(contentType) + '\n');
+    return hash;
+};
+
+
+exports.finalizePayloadHash = function (hash) {
+
+    hash.update('\n');
+    return hash.digest('base64');
+};
+
+
+exports.calculateTsMac = function (ts, credentials) {
+
+    var hmac = Crypto.createHmac(credentials.algorithm, credentials.key);
+    hmac.update('hawk.' + exports.headerVersion + '.ts\n' + ts + '\n');
+    return hmac.digest('base64');
+};
+
+
+exports.timestampMessage = function (credentials, localtimeOffsetMsec) {
+
+    var now = Utils.nowSecs(localtimeOffsetMsec);
+    var tsm = exports.calculateTsMac(now, credentials);
+    return { ts: now, tsm: tsm };
+};