Adding integrated tile server

[simantics/district.git] / org.simantics.maps.server / node / node-v4.8.0-win-x64 / node_modules / npm / node_modules / request / node_modules / http-signature / node_modules / sshpk / node_modules / jodid25519 / lib / dh.js

diff --git a/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/request/node_modules/http-signature/node_modules/sshpk/node_modules/jodid25519/lib/dh.js b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/request/node_modules/http-signature/node_modules/sshpk/node_modules/jodid25519/lib/dh.js
new file mode 100644 (file)
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+++ b/org.simantics.maps.server/node/node-v4.8.0-win-x64/node_modules/npm/node_modules/request/node_modules/http-signature/node_modules/sshpk/node_modules/jodid25519/lib/dh.js
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+"use strict";
+/**
+ * @fileOverview
+ * EC Diffie-Hellman operations on Curve25519.
+ */
+
+/*
+ * Copyright (c) 2014 Mega Limited
+ * under the MIT License.
+ *
+ * Authors: Guy K. Kloss
+ *
+ * You should have received a copy of the license along with this program.
+ */
+
+var core = require('./core');
+var utils = require('./utils');
+var curve255 = require('./curve255');
+
+
+    /**
+     * @exports jodid25519/dh
+     * EC Diffie-Hellman operations on Curve25519.
+     *
+     * @description
+     * EC Diffie-Hellman operations on Curve25519.
+     */
+    var ns = {};
+
+
+    function _toString(vector) {
+        var u = new Uint16Array(vector);
+        return (new Buffer(new Uint8Array(u.buffer)));
+    }
+
+    function _fromString(vector) {
+        if (Buffer.isBuffer(vector)) {
+            var u = new Uint8Array(vector);
+            return (new Uint16Array(u.buffer));
+        }
+
+        var result = new Array(16);
+        for (var i = 0, l = 0; i < vector.length; i += 2) {
+            result[l] = (vector.charCodeAt(i + 1) << 8) | vector.charCodeAt(i);
+            l++;
+        }
+        return result;
+    }
+
+
+    /**
+     * Computes a key through scalar multiplication of a point on the curve 25519.
+     *
+     * This function is used for the DH key-exchange protocol. It computes a
+     * key based on a secret key with a public component (opponent's public key
+     * or curve base point if not given) by using scalar multiplication.
+     *
+     * Before multiplication, some bit operations are applied to the
+     * private key to ensure it is a valid Curve25519 secret key.
+     * It is the user's responsibility to make sure that the private
+     * key is a uniformly random, secret value.
+     *
+     * @function
+     * @param privateComponent {string}
+     *     Private point as byte string on the curve.
+     * @param publicComponent {string}
+     *     Public point as byte string on the curve. If not given, the curve's
+     *     base point is used.
+     * @returns {string}
+     *     Key point as byte string resulting from scalar product.
+     */
+    ns.computeKey = function(privateComponent, publicComponent) {
+        if (publicComponent) {
+            return _toString(curve255.curve25519(_fromString(privateComponent),
+                                                 _fromString(publicComponent)));
+        } else {
+            return _toString(curve255.curve25519(_fromString(privateComponent)));
+        }
+    };
+
+    /**
+     * Computes the public key to a private key on the curve 25519.
+     *
+     * Before multiplication, some bit operations are applied to the
+     * private key to ensure it is a valid Curve25519 secret key.
+     * It is the user's responsibility to make sure that the private
+     * key is a uniformly random, secret value.
+     *
+     * @function
+     * @param privateKey {string}
+     *     Private point as byte string on the curve.
+     * @returns {string}
+     *     Public key point as byte string resulting from scalar product.
+     */
+    ns.publicKey = function(privateKey) {
+        return _toString(curve255.curve25519(_fromString(privateKey)));
+    };
+
+
+    /**
+     * Generates a new random private key of 32 bytes length (256 bit).
+     *
+     * @function
+     * @returns {string}
+     *     Byte string containing a new random private key seed.
+     */
+    ns.generateKey = function() {
+        return core.generateKey(true);
+    };
+
+module.exports = ns;