crypto: remove async functions.

lib/crypto/crypto.js

@@ -23,16 +23,6 @@ var crypto = exports;
 
 crypto.hash = backend.hash;
 
-/**
- * Hash with chosen algorithm (async).
- * @function
- * @param {String} alg
- * @param {Buffer} data
- * @returns {Buffer}
- */
-
-crypto.hashAsync = backend.hashAsync;
-
 /**
  * Hash with ripemd160.
  * @function
@@ -78,15 +68,6 @@ crypto.hash160 = backend.hash160;
 
 crypto.hash256 = backend.hash256;
 
-/**
- * Hash with sha256 twice (async).
- * @function
- * @param {Buffer} data
- * @returns {Buffer}
- */
-
-crypto.hash256Async = backend.hash256Async;
-
 /**
  * Create an HMAC.
  * @function
@@ -98,17 +79,6 @@ crypto.hash256Async = backend.hash256Async;
 
 crypto.hmac = backend.hmac;
 
-/**
- * Create an HMAC (async).
- * @function
- * @param {String} alg
- * @param {Buffer} data
- * @param {Buffer} key
- * @returns {Buffer} HMAC
- */
-
-crypto.hmacAsync = backend.hmacAsync;
-
 /**
  * Perform key derivation using PBKDF2.
  * @function
@@ -349,17 +319,6 @@ if (native)
 
 crypto.encipher = backend.encipher;
 
-/**
- * Encrypt with aes-256-cbc (async).
- * @function
- * @param {Buffer} data
- * @param {Buffer} key - 256 bit key.
- * @param {Buffer} iv - 128 bit initialization vector.
- * @returns {Promise}
- */
-
-crypto.encipherAsync = backend.encipherAsync;
-
 /**
  * Decrypt with aes-256-cbc.
  * @function
@@ -371,17 +330,6 @@ crypto.encipherAsync = backend.encipherAsync;
 
 crypto.decipher = backend.decipher;
 
-/**
- * Decrypt with aes-256-cbc (async).
- * @function
- * @param {Buffer} data
- * @param {Buffer} key - 256 bit key.
- * @param {Buffer} iv - 128 bit initialization vector.
- * @returns {Promise}
- */
-
-crypto.decipherAsync = backend.decipherAsync;
-
 /**
  * memcmp in constant time (can only return true or false).
  * This protects us against timing attacks when