diff --git a/lib/crypto-platform.js b/lib/crypto-platform.js
deleted file mode 100644
index 0cb0ad8..0000000
--- a/lib/crypto-platform.js
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * Node.js Bitmessage crypto implementation.
- * @module bitmessage/crypto-platform
- */
-
-"use strict";
-
-require("es6-promise").polyfill();
-var crypto = require("crypto");
-
-/**
- * Calculate SHA-512 hash.
- * @param {Buffer} buf - Input data
- * @return {Promise.<Buffer>} Resulting hash.
- */
-exports.sha512 = function(buf) {
-  var hash = crypto.createHash("sha512");
-  hash.update(buf);
-  return Promise.resolve(hash.digest());
-};
-
-/**
- * Calculate SHA-256 hash.
- * @param {Buffer} buf - Input data
- * @return {Promise.<Buffer>} Resulting hash.
- */
-exports.sha256 = function(buf) {
-  var hash = crypto.createHash("sha256");
-  hash.update(buf);
-  return Promise.resolve(hash.digest());
-};
-
-/**
- * Calculate RIPEMD-160 hash.
- * @param {Buffer} buf - Input data
- * @return {Promise.<Buffer>} Resulting hash.
- */
-exports.ripemd160 = function(buf) {
-  var hash = crypto.createHash("ripemd160");
-  hash.update(buf);
-  return Promise.resolve(hash.digest());
-};
-
-/**
- * Generate cryptographically strong pseudo-random data.
- * @param {number} size - Number of bytes
- * @return {Buffer} Buffer with random data.
- */
-exports.randomBytes = function(size) {
-  return crypto.randomBytes(size);
-};
diff --git a/lib/crypto.js b/lib/crypto.js
index 7588efa..79ce268 100644
--- a/lib/crypto.js
+++ b/lib/crypto.js
@@ -1,25 +1,52 @@
 /**
- * Isomorphic Bitmessage crypto module. Reexports
- * [platform-specific functions]{@link module:bitmessage/crypto-platform}
- * and also some common routines.
+ * Isomorphic Bitmessage crypto module. Reexports platform-dependent
+ * implementations and and also some common routines.
  * @module bitmessage/crypto
  */
 
 "use strict";
 
 var eccrypto = require("eccrypto");
-var cryptoPlatform = require("./crypto-platform");
+var platform = require("./platform");
 
-Object.keys(cryptoPlatform).forEach(function(key) {
-  exports[key] = cryptoPlatform[key];
-});
+/**
+ * Calculate SHA-512 hash.
+ * @param {Buffer} buf - Input data
+ * @return {Promise.<Buffer>} Resulting hash.
+ * @function
+ */
+exports.sha512 = platform.sha512;
+
+/**
+ * Calculate SHA-256 hash.
+ * @param {Buffer} buf - Input data
+ * @return {Promise.<Buffer>} Resulting hash.
+ * @function
+ */
+exports.sha256 = platform.sha256;
+
+/**
+ * Calculate RIPEMD-160 hash.
+ * @param {Buffer} buf - Input data
+ * @return {Promise.<Buffer>} Resulting hash.
+ * @function
+ */
+exports.ripemd160 = platform.ripemd160;
+
+/**
+ * Generate cryptographically strong pseudo-random data.
+ * @param {number} size - Number of bytes
+ * @return {Buffer} Buffer with random data.
+ * @function
+ */
+exports.randomBytes = platform.randomBytes;
 
 /**
  * Generate new random private key.
  * @return {Buffer} New private key.
  */
 exports.getPrivate = function() {
-  return cryptoPlatform.randomBytes(32);
+  return platform.randomBytes(32);
 };
 
 /**
diff --git a/lib/crypto-platform.browser.js b/lib/platform.browser.js
similarity index 95%
rename from lib/crypto-platform.browser.js
rename to lib/platform.browser.js
index c8e521f..7c4b5e1 100644
--- a/lib/crypto-platform.browser.js
+++ b/lib/platform.browser.js
@@ -1,5 +1,5 @@
 /**
- * Browser Bitmessage crypto implementation.
+ * Browser implementation of platform-specific routines.
  * @see {@link http://www.w3.org/TR/WebCryptoAPI/}
  * @see {@link http://caniuse.com/#feat=cryptography}
  * @see {@link https://sites.google.com/a/chromium.org/dev/blink/webcrypto}
diff --git a/lib/platform.js b/lib/platform.js
new file mode 100644
index 0000000..26884f1
--- /dev/null
+++ b/lib/platform.js
@@ -0,0 +1,29 @@
+/**
+ * Node.js implementation of platform-specific routines.
+ * @see {@link http://nodejs.org/api/crypto.html}
+ */
+
+"use strict";
+
+require("es6-promise").polyfill();
+var crypto = require("crypto");
+
+exports.sha512 = function(buf) {
+  var hash = crypto.createHash("sha512");
+  hash.update(buf);
+  return Promise.resolve(hash.digest());
+};
+
+exports.sha256 = function(buf) {
+  var hash = crypto.createHash("sha256");
+  hash.update(buf);
+  return Promise.resolve(hash.digest());
+};
+
+exports.ripemd160 = function(buf) {
+  var hash = crypto.createHash("ripemd160");
+  hash.update(buf);
+  return Promise.resolve(hash.digest());
+};
+
+exports.randomBytes = crypto.randomBytes;
diff --git a/package.json b/package.json
index dafc693..295a111 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "JavaScript Bitmessage library",
   "main": "./lib/index.js",
   "browser": {
-    "./lib/crypto-platform.js": "./lib/crypto-platform.browser.js"
+    "./lib/platform.js": "./lib/platform.browser.js"
   },
   "scripts": {
     "test": "ALL_TESTS=1 mocha && xvfb-run -a karma start && jshint .",