crypto: add function getDiffieHellman()

Returns a well known, predefined RFC group.

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/crypto.js b/lib/crypto.js
index 6244f2c8d4..05b19755be 100644
--- a/lib/crypto.js
+++ b/lib/crypto.js
@@ -30,6 +30,7 @@ try {
   var Sign = binding.Sign;
   var Verify = binding.Verify;
   var DiffieHellman = binding.DiffieHellman;
+  var DiffieHellmanGroup = binding.DiffieHellmanGroup;
   var PBKDF2 = binding.PBKDF2;
   var randomBytes = binding.randomBytes;
   var pseudoRandomBytes = binding.pseudoRandomBytes;
@@ -173,6 +174,9 @@ exports.createDiffieHellman = function(size_or_key, enc) {
   }
 
 };
+exports.getDiffieHellman = function(group_name) {
+  return new DiffieHellmanGroup(group_name);
+};
 
 exports.pbkdf2 = PBKDF2;