diff --git a/ChangeLog b/ChangeLog
index 701f86b..f590069 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
 PolarSSL ChangeLog
 
 = Version Master
+Changes
+   * Added ssl_handshake_step() to allow single stepping the handshake process
+
 Bugfix
    * Memory leak when using RSA_PKCS_V21 operations fixed
    * Handle future version properly in ssl_write_certificate_request()
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index e5d9eb7..9746e27 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -971,6 +971,20 @@
 int ssl_handshake( ssl_context *ssl );
 
 /**
+ * \brief          Perform a single step of the SSL handshake
+ *
+ *                 Note: the state of the context (ssl->state) will be at
+ *                 the following state after execution of this function.
+ *                 Do not call this function if state is SSL_HANDSHAKE_OVER.
+ *
+ * \param ssl      SSL context
+ *
+ * \return         0 if successful, POLARSSL_ERR_NET_WANT_READ,
+ *                 POLARSSL_ERR_NET_WANT_WRITE, or a specific SSL error code.
+ */
+int ssl_handshake_step( ssl_context *ssl );
+
+/**
  * \brief          Perform an SSL renegotiation on the running connection
  *
  * \param ssl      SSL context
@@ -1061,8 +1075,8 @@
 /*
  * Internal functions (do not call directly)
  */
-int ssl_handshake_client( ssl_context *ssl );
-int ssl_handshake_server( ssl_context *ssl );
+int ssl_handshake_client_step( ssl_context *ssl );
+int ssl_handshake_server_step( ssl_context *ssl );
 void ssl_handshake_wrapup( ssl_context *ssl );
 
 int ssl_send_fatal_handshake_failure( ssl_context *ssl );
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 42ddf41..545906a 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -1274,121 +1274,113 @@
 }
 
 /*
- * SSL handshake -- client side
+ * SSL handshake -- client side -- single step
  */
-int ssl_handshake_client( ssl_context *ssl )
+int ssl_handshake_client_step( ssl_context *ssl )
 {
     int ret = 0;
 
-    SSL_DEBUG_MSG( 2, ( "=> handshake client" ) );
+    if( ssl->state == SSL_HANDSHAKE_OVER )
+        return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
 
-    while( ssl->state != SSL_HANDSHAKE_OVER )
+    SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
+
+    if( ( ret = ssl_flush_output( ssl ) ) != 0 )
+        return( ret );
+
+    switch( ssl->state )
     {
-        SSL_DEBUG_MSG( 2, ( "client state: %d", ssl->state ) );
-
-        if( ( ret = ssl_flush_output( ssl ) ) != 0 )
+        case SSL_HELLO_REQUEST:
+            ssl->state = SSL_CLIENT_HELLO;
             break;
 
-        switch( ssl->state )
-        {
-            case SSL_HELLO_REQUEST:
-                ssl->state = SSL_CLIENT_HELLO;
-                break;
+       /*
+        *  ==>   ClientHello
+        */
+       case SSL_CLIENT_HELLO:
+           ret = ssl_write_client_hello( ssl );
+           break;
 
-            /*
-             *  ==>   ClientHello
-             */
-            case SSL_CLIENT_HELLO:
-                ret = ssl_write_client_hello( ssl );
-                break;
+       /*
+        *  <==   ServerHello
+        *        Certificate
+        *      ( ServerKeyExchange  )
+        *      ( CertificateRequest )
+        *        ServerHelloDone
+        */
+       case SSL_SERVER_HELLO:
+           ret = ssl_parse_server_hello( ssl );
+           break;
 
-            /*
-             *  <==   ServerHello
-             *        Certificate
-             *      ( ServerKeyExchange  )
-             *      ( CertificateRequest )
-             *        ServerHelloDone
-             */
-            case SSL_SERVER_HELLO:
-                ret = ssl_parse_server_hello( ssl );
-                break;
+       case SSL_SERVER_CERTIFICATE:
+           ret = ssl_parse_certificate( ssl );
+           break;
 
-            case SSL_SERVER_CERTIFICATE:
-                ret = ssl_parse_certificate( ssl );
-                break;
+       case SSL_SERVER_KEY_EXCHANGE:
+           ret = ssl_parse_server_key_exchange( ssl );
+           break;
 
-            case SSL_SERVER_KEY_EXCHANGE:
-                ret = ssl_parse_server_key_exchange( ssl );
-                break;
+       case SSL_CERTIFICATE_REQUEST:
+           ret = ssl_parse_certificate_request( ssl );
+           break;
 
-            case SSL_CERTIFICATE_REQUEST:
-                ret = ssl_parse_certificate_request( ssl );
-                break;
+       case SSL_SERVER_HELLO_DONE:
+           ret = ssl_parse_server_hello_done( ssl );
+           break;
 
-            case SSL_SERVER_HELLO_DONE:
-                ret = ssl_parse_server_hello_done( ssl );
-                break;
+       /*
+        *  ==> ( Certificate/Alert  )
+        *        ClientKeyExchange
+        *      ( CertificateVerify  )
+        *        ChangeCipherSpec
+        *        Finished
+        */
+       case SSL_CLIENT_CERTIFICATE:
+           ret = ssl_write_certificate( ssl );
+           break;
 
-            /*
-             *  ==> ( Certificate/Alert  )
-             *        ClientKeyExchange
-             *      ( CertificateVerify  )
-             *        ChangeCipherSpec
-             *        Finished
-             */
-            case SSL_CLIENT_CERTIFICATE:
-                ret = ssl_write_certificate( ssl );
-                break;
+       case SSL_CLIENT_KEY_EXCHANGE:
+           ret = ssl_write_client_key_exchange( ssl );
+           break;
 
-            case SSL_CLIENT_KEY_EXCHANGE:
-                ret = ssl_write_client_key_exchange( ssl );
-                break;
+       case SSL_CERTIFICATE_VERIFY:
+           ret = ssl_write_certificate_verify( ssl );
+           break;
 
-            case SSL_CERTIFICATE_VERIFY:
-                ret = ssl_write_certificate_verify( ssl );
-                break;
+       case SSL_CLIENT_CHANGE_CIPHER_SPEC:
+           ret = ssl_write_change_cipher_spec( ssl );
+           break;
 
-            case SSL_CLIENT_CHANGE_CIPHER_SPEC:
-                ret = ssl_write_change_cipher_spec( ssl );
-                break;
+       case SSL_CLIENT_FINISHED:
+           ret = ssl_write_finished( ssl );
+           break;
 
-            case SSL_CLIENT_FINISHED:
-                ret = ssl_write_finished( ssl );
-                break;
+       /*
+        *  <==   ChangeCipherSpec
+        *        Finished
+        */
+       case SSL_SERVER_CHANGE_CIPHER_SPEC:
+           ret = ssl_parse_change_cipher_spec( ssl );
+           break;
 
-            /*
-             *  <==   ChangeCipherSpec
-             *        Finished
-             */
-            case SSL_SERVER_CHANGE_CIPHER_SPEC:
-                ret = ssl_parse_change_cipher_spec( ssl );
-                break;
+       case SSL_SERVER_FINISHED:
+           ret = ssl_parse_finished( ssl );
+           break;
 
-            case SSL_SERVER_FINISHED:
-                ret = ssl_parse_finished( ssl );
-                break;
+       case SSL_FLUSH_BUFFERS:
+           SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
+           ssl->state = SSL_HANDSHAKE_WRAPUP;
+           break;
 
-            case SSL_FLUSH_BUFFERS:
-                SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
-                ssl->state = SSL_HANDSHAKE_WRAPUP;
-                break;
+       case SSL_HANDSHAKE_WRAPUP:
+           ssl_handshake_wrapup( ssl );
+           break;
 
-            case SSL_HANDSHAKE_WRAPUP:
-                ssl_handshake_wrapup( ssl );
-                break;
-
-            default:
-                SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
-                return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
-        }
-
-        if( ret != 0 )
-            break;
-    }
-
-    SSL_DEBUG_MSG( 2, ( "<= handshake client" ) );
+       default:
+           SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
+           return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
+   }
 
     return( ret );
 }
-
 #endif
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 3825393..df57cb3 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -1293,121 +1293,113 @@
 }
 
 /*
- * SSL handshake -- server side
+ * SSL handshake -- server side -- single step
  */
-int ssl_handshake_server( ssl_context *ssl )
+int ssl_handshake_server_step( ssl_context *ssl )
 {
     int ret = 0;
 
-    SSL_DEBUG_MSG( 2, ( "=> handshake server" ) );
+    if( ssl->state == SSL_HANDSHAKE_OVER )
+        return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
 
-    while( ssl->state != SSL_HANDSHAKE_OVER )
+    SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) );
+
+    if( ( ret = ssl_flush_output( ssl ) ) != 0 )
+        return( ret );
+
+    switch( ssl->state )
     {
-        SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) );
-
-        if( ( ret = ssl_flush_output( ssl ) ) != 0 )
+        case SSL_HELLO_REQUEST:
+            ssl->state = SSL_CLIENT_HELLO;
             break;
 
-        switch( ssl->state )
-        {
-            case SSL_HELLO_REQUEST:
-                ssl->state = SSL_CLIENT_HELLO;
-                break;
-
-            /*
-             *  <==   ClientHello
-             */
-            case SSL_CLIENT_HELLO:
-                ret = ssl_parse_client_hello( ssl );
-                break;
-
-            /*
-             *  ==>   ServerHello
-             *        Certificate
-             *      ( ServerKeyExchange  )
-             *      ( CertificateRequest )
-             *        ServerHelloDone
-             */
-            case SSL_SERVER_HELLO:
-                ret = ssl_write_server_hello( ssl );
-                break;
-
-            case SSL_SERVER_CERTIFICATE:
-                ret = ssl_write_certificate( ssl );
-                break;
-
-            case SSL_SERVER_KEY_EXCHANGE:
-                ret = ssl_write_server_key_exchange( ssl );
-                break;
-
-            case SSL_CERTIFICATE_REQUEST:
-                ret = ssl_write_certificate_request( ssl );
-                break;
-
-            case SSL_SERVER_HELLO_DONE:
-                ret = ssl_write_server_hello_done( ssl );
-                break;
-
-            /*
-             *  <== ( Certificate/Alert  )
-             *        ClientKeyExchange
-             *      ( CertificateVerify  )
-             *        ChangeCipherSpec
-             *        Finished
-             */
-            case SSL_CLIENT_CERTIFICATE:
-                ret = ssl_parse_certificate( ssl );
-                break;
-
-            case SSL_CLIENT_KEY_EXCHANGE:
-                ret = ssl_parse_client_key_exchange( ssl );
-                break;
-
-            case SSL_CERTIFICATE_VERIFY:
-                ret = ssl_parse_certificate_verify( ssl );
-                break;
-
-            case SSL_CLIENT_CHANGE_CIPHER_SPEC:
-                ret = ssl_parse_change_cipher_spec( ssl );
-                break;
-
-            case SSL_CLIENT_FINISHED:
-                ret = ssl_parse_finished( ssl );
-                break;
-
-            /*
-             *  ==>   ChangeCipherSpec
-             *        Finished
-             */
-            case SSL_SERVER_CHANGE_CIPHER_SPEC:
-                ret = ssl_write_change_cipher_spec( ssl );
-                break;
-
-            case SSL_SERVER_FINISHED:
-                ret = ssl_write_finished( ssl );
-                break;
-
-            case SSL_FLUSH_BUFFERS:
-                SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
-                ssl->state = SSL_HANDSHAKE_WRAPUP;
-                break;
-
-            case SSL_HANDSHAKE_WRAPUP:
-                ssl_handshake_wrapup( ssl );
-                break;
-
-            default:
-                SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
-                return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
-        }
-
-        if( ret != 0 )
+        /*
+         *  <==   ClientHello
+         */
+        case SSL_CLIENT_HELLO:
+            ret = ssl_parse_client_hello( ssl );
             break;
+
+        /*
+         *  ==>   ServerHello
+         *        Certificate
+         *      ( ServerKeyExchange  )
+         *      ( CertificateRequest )
+         *        ServerHelloDone
+         */
+        case SSL_SERVER_HELLO:
+            ret = ssl_write_server_hello( ssl );
+            break;
+
+        case SSL_SERVER_CERTIFICATE:
+            ret = ssl_write_certificate( ssl );
+            break;
+
+        case SSL_SERVER_KEY_EXCHANGE:
+            ret = ssl_write_server_key_exchange( ssl );
+            break;
+
+        case SSL_CERTIFICATE_REQUEST:
+            ret = ssl_write_certificate_request( ssl );
+            break;
+
+        case SSL_SERVER_HELLO_DONE:
+            ret = ssl_write_server_hello_done( ssl );
+            break;
+
+        /*
+         *  <== ( Certificate/Alert  )
+         *        ClientKeyExchange
+         *      ( CertificateVerify  )
+         *        ChangeCipherSpec
+         *        Finished
+         */
+        case SSL_CLIENT_CERTIFICATE:
+            ret = ssl_parse_certificate( ssl );
+            break;
+
+        case SSL_CLIENT_KEY_EXCHANGE:
+            ret = ssl_parse_client_key_exchange( ssl );
+            break;
+
+        case SSL_CERTIFICATE_VERIFY:
+            ret = ssl_parse_certificate_verify( ssl );
+            break;
+
+        case SSL_CLIENT_CHANGE_CIPHER_SPEC:
+            ret = ssl_parse_change_cipher_spec( ssl );
+            break;
+
+        case SSL_CLIENT_FINISHED:
+            ret = ssl_parse_finished( ssl );
+            break;
+
+        /*
+         *  ==>   ChangeCipherSpec
+         *        Finished
+         */
+        case SSL_SERVER_CHANGE_CIPHER_SPEC:
+            ret = ssl_write_change_cipher_spec( ssl );
+            break;
+
+        case SSL_SERVER_FINISHED:
+            ret = ssl_write_finished( ssl );
+            break;
+
+        case SSL_FLUSH_BUFFERS:
+            SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
+            ssl->state = SSL_HANDSHAKE_WRAPUP;
+            break;
+
+        case SSL_HANDSHAKE_WRAPUP:
+            ssl_handshake_wrapup( ssl );
+            break;
+
+        default:
+            SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
+            return( POLARSSL_ERR_SSL_BAD_INPUT_DATA );
     }
 
-    SSL_DEBUG_MSG( 2, ( "<= handshake server" ) );
-
     return( ret );
 }
-
 #endif
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index e0a64ab..9411392 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -3513,24 +3513,42 @@
 };
 
 /*
- * Perform the SSL handshake
+ * Perform a single step of the SSL handshake
  */
-int ssl_handshake( ssl_context *ssl )
+int ssl_handshake_step( ssl_context *ssl )
 {
     int ret = POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE;
 
-    SSL_DEBUG_MSG( 2, ( "=> handshake" ) );
-
 #if defined(POLARSSL_SSL_CLI_C)
     if( ssl->endpoint == SSL_IS_CLIENT )
-        ret = ssl_handshake_client( ssl );
+        ret = ssl_handshake_client_step( ssl );
 #endif
 
 #if defined(POLARSSL_SSL_SRV_C)
     if( ssl->endpoint == SSL_IS_SERVER )
-        ret = ssl_handshake_server( ssl );
+        ret = ssl_handshake_server_step( ssl );
 #endif
 
+    return( ret );
+}
+
+/*
+ * Perform the SSL handshake
+ */
+int ssl_handshake( ssl_context *ssl )
+{
+    int ret = 0;
+
+    SSL_DEBUG_MSG( 2, ( "=> handshake" ) );
+
+    while( ssl->state != SSL_HANDSHAKE_OVER )
+    {
+        ret = ssl_handshake_step( ssl );
+
+        if( ret != 0 )
+            break;
+    }
+
     SSL_DEBUG_MSG( 2, ( "<= handshake" ) );
 
     return( ret );