diff --git a/History.md b/History.md
index 4de49f7b3d..d07087d3de 100644
--- a/History.md
+++ b/History.md
@@ -15,6 +15,9 @@
 * The oplog observe driver handles errors communicating with Mongo better and
   knows to re-poll all queries during Mongo failovers.
 
+* Add `Random.secret()` for generating security-critical secrets like
+  login tokens.
+
 * Upgraded dependencies:
   - Node.js from 0.10.25 to 0.10.26.
   - MongoDB driver from 1.3.19 to 1.4.1
diff --git a/docs/client/packages/random.html b/docs/client/packages/random.html
index a9684035f4..1b85ccd4bf 100644
--- a/docs/client/packages/random.html
+++ b/docs/client/packages/random.html
@@ -10,9 +10,18 @@ servers that don't have enough entropy to seed the cryptographically strong
 generator).
 
 <dl class="callbacks">
-{{#dtdd "Random.id()"}}
-Returns a unique identifier, such as `"Jjwjg6gouWLXhMGKW"`, that is likely to
-be unique in the whole world.
+{{#dtdd "Random.id([n])"}}
+Returns a unique identifier, such as `"Jjwjg6gouWLXhMGKW"`, that is
+likely to be unique in the whole world. The optional argument `n`
+specifies the length of the identifier in characters and defaults to 17.
+{{/dtdd}}
+
+{{#dtdd "Random.secret([n])"}}
+Returns a random string of printable characters with 6 bits of
+entropy per character. The optional argument `n` specifies the length of
+the secret string and defaults to 43 characters, or 256 bits of
+entropy. Use `Random.secret` for security-critical secrets that are
+intended for machine, rather than human, consumption.
 {{/dtdd}}
 
 {{#dtdd "Random.fraction()"}}
diff --git a/packages/accounts-base/accounts_server.js b/packages/accounts-base/accounts_server.js
index 444f50db32..233f698a43 100644
--- a/packages/accounts-base/accounts_server.js
+++ b/packages/accounts-base/accounts_server.js
@@ -760,7 +760,7 @@ Accounts.registerLoginHandler("resume", function(options) {
 // (Also used by Meteor Accounts server and tests).
 //
 Accounts._generateStampedLoginToken = function () {
-  return {token: Random.id(), when: (new Date)};
+  return {token: Random.secret(), when: (new Date)};
 };
 
 ///
diff --git a/packages/accounts-password/password_server.js b/packages/accounts-password/password_server.js
index 8f4b8dd862..6a019f2d4d 100644
--- a/packages/accounts-password/password_server.js
+++ b/packages/accounts-password/password_server.js
@@ -263,7 +263,7 @@ Accounts.sendResetPasswordEmail = function (userId, email) {
   if (!email || !_.contains(_.pluck(user.emails || [], 'address'), email))
     throw new Error("No such email for user.");
 
-  var token = Random.id();
+  var token = Random.secret();
   var when = new Date();
   Meteor.users.update(userId, {$set: {
     "services.password.reset": {
@@ -312,7 +312,7 @@ Accounts.sendEnrollmentEmail = function (userId, email) {
     throw new Error("No such email for user.");
 
 
-  var token = Random.id();
+  var token = Random.secret();
   var when = new Date();
   Meteor.users.update(userId, {$set: {
     "services.password.reset": {
@@ -435,7 +435,7 @@ Accounts.sendVerificationEmail = function (userId, address) {
 
 
   var tokenRecord = {
-    token: Random.id(),
+    token: Random.secret(),
     address: address,
     when: new Date()};
   Meteor.users.update(
diff --git a/packages/facebook/facebook_client.js b/packages/facebook/facebook_client.js
index d34d9b2cc3..ed86eed72d 100644
--- a/packages/facebook/facebook_client.js
+++ b/packages/facebook/facebook_client.js
@@ -19,7 +19,7 @@ Facebook.requestCredential = function (options, credentialRequestCompleteCallbac
     return;
   }
 
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
   var mobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|Windows Phone/i.test(navigator.userAgent);
   var display = mobile ? 'touch' : 'popup';
 
diff --git a/packages/github/github_client.js b/packages/github/github_client.js
index d335702b6e..ccf06b2a5d 100644
--- a/packages/github/github_client.js
+++ b/packages/github/github_client.js
@@ -17,7 +17,7 @@ Github.requestCredential = function (options, credentialRequestCompleteCallback)
     credentialRequestCompleteCallback && credentialRequestCompleteCallback(new ServiceConfiguration.ConfigError("Service not configured"));
     return;
   }
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
 
   var scope = (options && options.requestPermissions) || [];
   var flatScope = _.map(scope, encodeURIComponent).join('+');
diff --git a/packages/google/google_client.js b/packages/google/google_client.js
index a828571fd6..b080264669 100644
--- a/packages/google/google_client.js
+++ b/packages/google/google_client.js
@@ -20,7 +20,7 @@ Google.requestCredential = function (options, credentialRequestCompleteCallback)
     return;
   }
 
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
 
   // always need this to get user id from google.
   var requiredScope = ['profile'];
diff --git a/packages/meetup/meetup_client.js b/packages/meetup/meetup_client.js
index ee495a7598..277811d208 100644
--- a/packages/meetup/meetup_client.js
+++ b/packages/meetup/meetup_client.js
@@ -16,7 +16,7 @@ Meetup.requestCredential = function (options, credentialRequestCompleteCallback)
     credentialRequestCompleteCallback && credentialRequestCompleteCallback(new ServiceConfiguration.ConfigError("Service not configured"));
     return;
   }
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
 
   var scope = (options && options.requestPermissions) || [];
   var flatScope = _.map(scope, encodeURIComponent).join('+');
diff --git a/packages/meteor-developer/meteor_developer_client.js b/packages/meteor-developer/meteor_developer_client.js
index 8f3ad1a9dd..81a57d58c8 100644
--- a/packages/meteor-developer/meteor_developer_client.js
+++ b/packages/meteor-developer/meteor_developer_client.js
@@ -16,7 +16,7 @@ var requestCredential = function (credentialRequestCompleteCallback) {
     return;
   }
 
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
 
   var loginUrl =
         METEOR_DEVELOPER_URL + "/oauth2/authorize?" +
diff --git a/packages/oauth1/oauth1_binding.js b/packages/oauth1/oauth1_binding.js
index 43e63a111b..bcfafed683 100644
--- a/packages/oauth1/oauth1_binding.js
+++ b/packages/oauth1/oauth1_binding.js
@@ -85,7 +85,7 @@ OAuth1Binding.prototype._buildHeader = function(headers) {
   var self = this;
   return _.extend({
     oauth_consumer_key: self._config.consumerKey,
-    oauth_nonce: Random.id().replace(/\W/g, ''),
+    oauth_nonce: Random.secret().replace(/\W/g, ''),
     oauth_signature_method: 'HMAC-SHA1',
     oauth_timestamp: (new Date().valueOf()/1000).toFixed().toString(),
     oauth_version: '1.0'
diff --git a/packages/random/random.js b/packages/random/random.js
index 0c1397df5b..f0d22f2eb5 100644
--- a/packages/random/random.js
+++ b/packages/random/random.js
@@ -86,6 +86,8 @@ var Alea = function () {
 };
 
 var UNMISTAKABLE_CHARS = "23456789ABCDEFGHJKLMNPQRSTWXYZabcdefghijkmnopqrstuvwxyz";
+var BASE64_CHARS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" +
+  "0123456789-_";
 
 // If seeds are provided, then the alea PRNG will be used, since cryptographic
 // PRNGs (Node crypto and window.crypto.getRandomValues) don't allow us to
@@ -139,17 +141,36 @@ RandomGenerator.prototype.hexString = function (digits) {
     return hexDigits.join('');
   }
 };
-RandomGenerator.prototype.id = function () {
-  var digits = [];
+
+RandomGenerator.prototype._randomString = function (charsCount,
+                                                    alphabet) {
   var self = this;
-  // Length of 17 preserves around 96 bits of entropy, which is the
-  // amount of state in the Alea PRNG.
-  for (var i = 0; i < 17; i++) {
-    digits[i] = self.choice(UNMISTAKABLE_CHARS);
+  var digits = [];
+  for (var i = 0; i < charsCount; i++) {
+    digits[i] = self.choice(alphabet);
   }
   return digits.join("");
 };
 
+RandomGenerator.prototype.id = function (charsCount) {
+  var self = this;
+  // 17 characters is around 96 bits of entropy, which is the amount of
+  // state in the Alea PRNG.
+  if (charsCount === undefined)
+    charsCount = 17;
+
+  return self._randomString(charsCount, UNMISTAKABLE_CHARS);
+};
+
+RandomGenerator.prototype.secret = function (charsCount) {
+  var self = this;
+  // Default to 256 bits of entropy, or 43 characters at 6 bits per
+  // character.
+  if (charsCount === undefined)
+    charsCount = 43;
+  return self._randomString(charsCount, BASE64_CHARS);
+};
+
 RandomGenerator.prototype.choice = function (arrayOrString) {
   var index = Math.floor(this.fraction() * arrayOrString.length);
   if (typeof arrayOrString === "string")
diff --git a/packages/random/random_tests.js b/packages/random/random_tests.js
index 436a87daef..c586e5ff8c 100644
--- a/packages/random/random_tests.js
+++ b/packages/random/random_tests.js
@@ -19,6 +19,7 @@ Tinytest.add('random', function (test) {
 Tinytest.add('random - format', function (test) {
   var idLen = 17;
   test.equal(Random.id().length, idLen);
+  test.equal(Random.id(29).length, 29);
   var numDigits = 9;
   var hexStr = Random.hexString(numDigits);
   test.equal(hexStr.length, numDigits);
@@ -26,6 +27,9 @@ Tinytest.add('random - format', function (test) {
   var frac = Random.fraction();
   test.isTrue(frac < 1.0);
   test.isTrue(frac >= 0.0);
+
+  test.equal(Random.secret().length, 43);
+  test.equal(Random.secret(13).length, 13);
 });
 
 Tinytest.add('random - Alea is last resort', function (test) {
diff --git a/packages/srp/srp.js b/packages/srp/srp.js
index e04860d577..231a1b59b7 100644
--- a/packages/srp/srp.js
+++ b/packages/srp/srp.js
@@ -15,8 +15,8 @@ SRP = {};
 SRP.generateVerifier = function (password, options) {
   var params = paramsFromOptions(options);
 
-  var identity = (options && options.identity) || Random.id();
-  var salt = (options && options.salt) || Random.id();
+  var identity = (options && options.identity) || Random.secret();
+  var salt = (options && options.salt) || Random.secret();
 
   var x = params.hash(salt + params.hash(identity + ":" + password));
   var xi = new BigInteger(x, 16);
diff --git a/packages/twitter/twitter_client.js b/packages/twitter/twitter_client.js
index c8ca6fd44e..f1553c9e96 100644
--- a/packages/twitter/twitter_client.js
+++ b/packages/twitter/twitter_client.js
@@ -18,7 +18,7 @@ Twitter.requestCredential = function (options, credentialRequestCompleteCallback
     return;
   }
 
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
   // We need to keep credentialToken across the next two 'steps' so we're adding
   // a credentialToken parameter to the url and the callback url that we'll be returned
   // to by oauth provider
diff --git a/packages/weibo/weibo_client.js b/packages/weibo/weibo_client.js
index 32b95f292c..feff8f2920 100644
--- a/packages/weibo/weibo_client.js
+++ b/packages/weibo/weibo_client.js
@@ -18,7 +18,7 @@ Weibo.requestCredential = function (options, credentialRequestCompleteCallback)
     return;
   }
 
-  var credentialToken = Random.id();
+  var credentialToken = Random.secret();
   // XXX need to support configuring access_type and scope
   var loginUrl =
         'https://api.weibo.com/oauth2/authorize' +