diff --git a/OpenSSL/crypto/pkey.c b/OpenSSL/crypto/pkey.c
index 0a13aa3..cfedfda 100644
--- a/OpenSSL/crypto/pkey.c
+++ b/OpenSSL/crypto/pkey.c
@@ -107,6 +107,39 @@
     return PyLong_FromLong(self->pkey->type);
 }
 
+static char crypto_PKey_check_doc[] = "\n\
+Check the consistency of an RSA private key.\n\
+\n\
+Arguments: self - The PKey object\n\
+           args - The Python argument tuple, should be empty\n\
+Returns: True if key is consistent.  False if not.\n\
+";
+
+static PyObject *
+crypto_PKey_check(crypto_PKeyObj *self, PyObject *args)
+{
+    int r;
+    EVP_PKEY *pkey;
+
+    if (!PyArg_ParseTuple(args, ":check"))
+        return NULL;
+    pkey = self->pkey;
+    if(pkey == NULL)
+        return NULL;
+
+    if(pkey->type == EVP_PKEY_RSA) {
+        RSA *rsa;
+        rsa = EVP_PKEY_get1_RSA(pkey);
+        r = RSA_check_key(rsa);
+        if (r == 1)
+            return PyInt_FromLong(1L);
+        else
+            return PyInt_FromLong(0L);
+    } else {
+        PyErr_SetString( PyExc_TypeError, "key type unsupported");
+        return NULL;
+    }
+}
 
 /*
  * ADD_METHOD(name) expands to a correct PyMethodDef declaration
@@ -120,6 +153,7 @@
     ADD_METHOD(generate_key),
     ADD_METHOD(bits),
     ADD_METHOD(type),
+    ADD_METHOD(check),
     { NULL, NULL }
 };
 #undef ADD_METHOD
diff --git a/OpenSSL/test/test_crypto.py b/OpenSSL/test/test_crypto.py
index 71da5c3..6c0ee31 100644
--- a/OpenSSL/test/test_crypto.py
+++ b/OpenSSL/test/test_crypto.py
@@ -564,6 +564,7 @@
         key.generate_key(TYPE_RSA, bits)
         self.assertEqual(key.type(), TYPE_RSA)
         self.assertEqual(key.bits(), bits)
+        self.assertTrue(key.check())
 
 
     def test_dsaGeneration(self):
@@ -579,6 +580,7 @@
         key.generate_key(TYPE_DSA, bits)
         self.assertEqual(key.type(), TYPE_DSA)
         self.assertEqual(key.bits(), bits)
+        self.assertRaises(TypeError, key.check)
 
 
     def test_regeneration(self):
@@ -2077,6 +2079,7 @@
         L{dump_privatekey} writes a PEM, DER, and text.
         """
         key = load_privatekey(FILETYPE_PEM, cleartextPrivateKeyPEM)
+        self.assertTrue(key.check())
         dumped_pem = dump_privatekey(FILETYPE_PEM, key)
         self.assertEqual(dumped_pem, cleartextPrivateKeyPEM)
         dumped_der = dump_privatekey(FILETYPE_ASN1, key)