diff --git a/ChangeLog b/ChangeLog
index beff0b6..0ee0cee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,7 @@
    * PSK and DHE-PSK based ciphersuites added
    * Memory allocation abstraction layer added
    * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
+   * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
 
 Changes
    * Introduced separate SSL Ciphersuites module that is based on
diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 84f4fe1..5742fe5 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -94,6 +94,15 @@
  *
 #define POLARSSL_HAVE_SSE2
  */
+
+/**
+ * \def POLARSSL_HAVE_TIME
+ *
+ * System has time.h and time() / localtime()  / gettimeofday()
+ *
+ * Comment if your system does not support time functions
+ */
+#define POLARSSL_HAVE_TIME
 /* \} name */
 
 /**
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index 4bc0fad..eca6879 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -27,8 +27,6 @@
 #ifndef POLARSSL_SSL_H
 #define POLARSSL_SSL_H
 
-#include <time.h>
-
 #include "config.h"
 #include "net.h"
 #include "bignum.h"
@@ -60,6 +58,10 @@
 #include "zlib.h"
 #endif
 
+#if defined(POLARSSL_HAVE_TIME)
+#include <time.h>
+#endif
+
 #if defined(_MSC_VER) && !defined(inline)
 #define inline _inline
 #else
@@ -306,7 +308,9 @@
  */
 struct _ssl_session
 {
+#if defined(POLARSSL_HAVE_TIME)
     time_t start;               /*!< starting time      */
+#endif
     int ciphersuite;            /*!< chosen ciphersuite */
     int compression;            /*!< chosen compression */
     size_t length;              /*!< session id length  */
diff --git a/include/polarssl/ssl_cache.h b/include/polarssl/ssl_cache.h
index c47330d..979dc14 100644
--- a/include/polarssl/ssl_cache.h
+++ b/include/polarssl/ssl_cache.h
@@ -46,7 +46,9 @@
  */
 struct _ssl_cache_entry
 {
+#if defined(POLARSSL_HAVE_TIME)
     time_t timestamp;           /*!< entry timestamp    */
+#endif
     ssl_session session;        /*!< entry session      */
 #if defined(POLARSSL_X509_PARSE_C)
     x509_buf peer_cert;         /*!< entry peer_cert    */
@@ -87,6 +89,7 @@
  */
 int ssl_cache_set( void *data, const ssl_session *session );
 
+#if defined(POLARSSL_HAVE_TIME)
 /**
  * \brief          Set the cache timeout
  *                 (Default: SSL_CACHE_DEFAULT_TIMEOUT (1 day))
@@ -97,6 +100,7 @@
  * \param timeout  cache entry timeout
  */
 void ssl_cache_set_timeout( ssl_cache_context *cache, int timeout );
+#endif /* POLARSSL_HAVE_TIME */
 
 /**
  * \brief          Set the cache timeout
diff --git a/library/asn1parse.c b/library/asn1parse.c
index d0a2234..5b86aa6 100644
--- a/library/asn1parse.c
+++ b/library/asn1parse.c
@@ -42,7 +42,6 @@
 
 #include <string.h>
 #include <stdlib.h>
-#include <time.h>
 
 /*
  * ASN.1 DER decoding routines
diff --git a/library/havege.c b/library/havege.c
index ff302c5..4d6f418 100644
--- a/library/havege.c
+++ b/library/havege.c
@@ -38,7 +38,6 @@
 #include "polarssl/timing.h"
 
 #include <string.h>
-#include <time.h>
 
 /* ------------------------------------------------------------------------
  * On average, one iteration accesses two 8-word blocks in the havege WALK
diff --git a/library/net.c b/library/net.c
index 7a1818d..da7214d 100644
--- a/library/net.c
+++ b/library/net.c
@@ -1,7 +1,7 @@
 /*
  *  TCP networking functions
  *
- *  Copyright (C) 2006-2010, Brainspark B.V.
+ *  Copyright (C) 2006-2013, Brainspark B.V.
  *
  *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@@ -52,7 +52,9 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#if defined(POLARSSL_HAVE_TIME)
 #include <sys/time.h>
+#endif
 #include <unistd.h>
 #include <signal.h>
 #include <fcntl.h>
@@ -74,7 +76,10 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+
+#if defined(POLARSSL_HAVE_TIME)
 #include <time.h>
+#endif
 
 #ifdef _MSC_VER
 #include <basetsd.h>
@@ -293,6 +298,7 @@
 #endif
 }
 
+#if defined(POLARSSL_HAVE_TIME)
 /*
  * Portable usleep helper
  */
@@ -303,6 +309,7 @@
     tv.tv_usec = usec;
     select( 0, NULL, NULL, NULL, &tv );
 }
+#endif /* POLARSSL_HAVE_TIME */
 
 /*
  * Read at most 'len' characters
diff --git a/library/ssl_cache.c b/library/ssl_cache.c
index bc4326a..f5d3e48 100644
--- a/library/ssl_cache.c
+++ b/library/ssl_cache.c
@@ -52,7 +52,9 @@
 
 int ssl_cache_get( void *data, ssl_session *session )
 {
+#if defined(POLARSSL_HAVE_TIME)
     time_t t = time( NULL );
+#endif
     ssl_cache_context *cache = (ssl_cache_context *) data;
     ssl_cache_entry *cur, *entry;
 
@@ -64,9 +66,11 @@
         entry = cur;
         cur = cur->next;
 
+#if defined(POLARSSL_HAVE_TIME)
         if( cache->timeout != 0 &&
             (int) ( t - entry->timestamp ) > cache->timeout )
             continue;
+#endif
 
         if( session->ciphersuite != entry->session.ciphersuite ||
             session->compression != entry->session.compression ||
@@ -108,9 +112,12 @@
 
 int ssl_cache_set( void *data, const ssl_session *session )
 {
+#if defined(POLARSSL_HAVE_TIME)
     time_t t = time( NULL ), oldest = 0;
+    ssl_cache_entry *old = NULL;
+#endif
     ssl_cache_context *cache = (ssl_cache_context *) data;
-    ssl_cache_entry *cur, *prv, *old = NULL;
+    ssl_cache_entry *cur, *prv;
     int count = 0;
 
     cur = cache->chain;
@@ -120,21 +127,25 @@
     {
         count++;
 
+#if defined(POLARSSL_HAVE_TIME)
         if( cache->timeout != 0 &&
             (int) ( t - cur->timestamp ) > cache->timeout )
         {
             cur->timestamp = t;
             break; /* expired, reuse this slot, update timestamp */
         }
+#endif
 
         if( memcmp( session->id, cur->session.id, cur->session.length ) == 0 )
             break; /* client reconnected, keep timestamp for session id */
 
+#if defined(POLARSSL_HAVE_TIME)
         if( oldest == 0 || cur->timestamp < oldest )
         {
             oldest = cur->timestamp;
             old = cur;
         }
+#endif
 
         prv = cur;
         cur = cur->next;
@@ -142,6 +153,7 @@
 
     if( cur == NULL )
     {
+#if defined(POLARSSL_HAVE_TIME)
         /*
          * Reuse oldest entry if max_entries reached
          */
@@ -157,6 +169,31 @@
             }
 #endif /* POLARSSL_X509_PARSE_C */
         }
+#else /* POLARSSL_HAVE_TIME */
+        /*
+         * Reuse first entry in chain if max_entries reached,
+         * but move to last place
+         */
+        if( count >= cache->max_entries )
+        {
+            if( cache->chain == NULL )
+                return( 1 );
+
+            cur = cache->chain;
+            cache->chain = cur->next;
+
+#if defined(POLARSSL_X509_PARSE_C)
+            if( cur->peer_cert.p != NULL )
+            {
+                polarssl_free( cur->peer_cert.p );
+                memset( &cur->peer_cert, 0, sizeof(x509_buf) );
+            }
+#endif /* POLARSSL_X509_PARSE_C */
+
+            memset( cur, 0, sizeof(ssl_cache_entry) );
+            prv->next = cur;
+        }
+#endif /* POLARSSL_HAVE_TIME */
         else
         {
             cur = (ssl_cache_entry *) polarssl_malloc( sizeof(ssl_cache_entry) );
@@ -171,7 +208,9 @@
                 prv->next = cur;
         }
 
+#if defined(POLARSSL_HAVE_TIME)
         cur->timestamp = t;
+#endif
     }
 
     memcpy( &cur->session, session, sizeof( ssl_session ) );
@@ -197,12 +236,14 @@
     return( 0 );
 }
 
+#if defined(POLARSSL_HAVE_TIME)
 void ssl_cache_set_timeout( ssl_cache_context *cache, int timeout )
 {
     if( timeout < 0 ) timeout = 0;
 
     cache->timeout = timeout;
 }
+#endif /* POLARSSL_HAVE_TIME */
 
 void ssl_cache_set_max_entries( ssl_cache_context *cache, int max )
 {
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 93d81a6..6496b84 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -32,7 +32,17 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+
+#ifdef _MSC_VER
+#include <basetsd.h>
+typedef UINT32 uint32_t;
+#else
+#include <inttypes.h>
+#endif
+
+#if defined(POLARSSL_HAVE_TIME)
 #include <time.h>
+#endif
 
 static void ssl_write_hostname_ext( ssl_context *ssl,
                                     unsigned char *buf,
@@ -265,7 +275,9 @@
     size_t i, n, olen, ext_len = 0;
     unsigned char *buf;
     unsigned char *p, *q;
+#if defined(POLARSSL_HAVE_TIME)
     time_t t;
+#endif
     const int *ciphersuites;
     const ssl_ciphersuite_t *ciphersuite_info;
 
@@ -299,6 +311,7 @@
     SSL_DEBUG_MSG( 3, ( "client hello, max version: [%d:%d]",
                    buf[4], buf[5] ) );
 
+#if defined(POLARSSL_HAVE_TIME)
     t = time( NULL );
     *p++ = (unsigned char)( t >> 24 );
     *p++ = (unsigned char)( t >> 16 );
@@ -306,6 +319,12 @@
     *p++ = (unsigned char)( t       );
 
     SSL_DEBUG_MSG( 3, ( "client hello, current time: %lu", t ) );
+#else
+    if( ( ret = ssl->f_rng( ssl->p_rng, p, 4 ) ) != 0 )
+        return( ret );
+
+    p += 4;
+#endif
 
     if( ( ret = ssl->f_rng( ssl->p_rng, p, 28 ) ) != 0 )
         return( ret );
@@ -483,9 +502,7 @@
 
 static int ssl_parse_server_hello( ssl_context *ssl )
 {
-#if defined(POLARSSL_DEBUG_C)
-    time_t t;
-#endif
+    uint32_t t;
     int ret, i, comp;
     size_t n;
     size_t ext_len = 0;
@@ -548,10 +565,10 @@
     }
 
 #if defined(POLARSSL_DEBUG_C)
-    t = ( (time_t) buf[6] << 24 )
-      | ( (time_t) buf[7] << 16 )
-      | ( (time_t) buf[8] <<  8 )
-      | ( (time_t) buf[9]       );
+    t = ( (uint32_t) buf[6] << 24 )
+      | ( (uint32_t) buf[7] << 16 )
+      | ( (uint32_t) buf[8] <<  8 )
+      | ( (uint32_t) buf[9]       );
 #endif
 
     memcpy( ssl->handshake->randbytes + 32, buf + 6, 32 );
@@ -619,7 +636,9 @@
     {
         ssl->state++;
         ssl->handshake->resume = 0;
+#if defined(POLARSSL_HAVE_TIME)
         ssl->session_negotiate->start = time( NULL );
+#endif
         ssl->session_negotiate->ciphersuite = i;
         ssl->session_negotiate->compression = comp;
         ssl->session_negotiate->length = n;
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 2bf3725..451d445 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -35,7 +35,10 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+
+#if defined(POLARSSL_HAVE_TIME)
 #include <time.h>
+#endif
 
 static int ssl_parse_servername_ext( ssl_context *ssl,
                                      const unsigned char *buf,
@@ -933,7 +936,9 @@
 
 static int ssl_write_server_hello( ssl_context *ssl )
 {
+#if defined(POLARSSL_HAVE_TIME)
     time_t t;
+#endif
     int ret, n;
     size_t ext_len = 0;
     unsigned char *buf, *p;
@@ -956,6 +961,7 @@
     SSL_DEBUG_MSG( 3, ( "server hello, chosen version: [%d:%d]",
                    buf[4], buf[5] ) );
 
+#if defined(POLARSSL_HAVE_TIME)
     t = time( NULL );
     *p++ = (unsigned char)( t >> 24 );
     *p++ = (unsigned char)( t >> 16 );
@@ -963,6 +969,12 @@
     *p++ = (unsigned char)( t       );
 
     SSL_DEBUG_MSG( 3, ( "server hello, current time: %lu", t ) );
+#else
+    if( ( ret = ssl->f_rng( ssl->p_rng, p, 4 ) ) != 0 )
+        return( ret );
+
+    p += 4;
+#endif
 
     if( ( ret = ssl->f_rng( ssl->p_rng, p, 28 ) ) != 0 )
         return( ret );
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 3ac60f5..cea90eb 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -54,7 +54,6 @@
 #endif
 
 #include <stdlib.h>
-#include <time.h>
 
 #if defined _MSC_VER && !defined strcasecmp
 #define strcasecmp _stricmp
diff --git a/library/x509parse.c b/library/x509parse.c
index b27faf9..ea3a24a 100644
--- a/library/x509parse.c
+++ b/library/x509parse.c
@@ -2875,6 +2875,7 @@
 /*
  * Return 0 if the x509_time is still valid, or 1 otherwise.
  */
+#if defined(POLARSSL_HAVE_TIME)
 int x509parse_time_expired( const x509_time *to )
 {
     int year, mon, day;
@@ -2941,6 +2942,13 @@
 
     return( 0 );
 }
+#else  /* POLARSSL_HAVE_TIME */
+int x509parse_time_expired( const x509_time *to )
+{
+    ((void) to);
+    return( 0 );
+}
+#endif /* POLARSSL_HAVE_TIME */
 
 /*
  * Return 1 if the certificate is revoked, or 0 otherwise.
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 03112ad..e021ebb 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -56,7 +56,7 @@
     !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_SSL_TLS_C) || \
     !defined(POLARSSL_SSL_SRV_C) || !defined(POLARSSL_NET_C) ||     \
     !defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) ||    \
-    !defined(POLARSSL_X509_PARSE_C)
+    !defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_TIMING_C)
 int main( int argc, char *argv[] )
 {
     ((void) argc);
@@ -65,7 +65,8 @@
     printf("POLARSSL_BIGNUM_C and/or POLARSSL_CERTS_C and/or POLARSSL_ENTROPY_C "
            "and/or POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
            "POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
-           "POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_PARSE_C not defined.\n");
+           "POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_PARSE_C and/or "
+           "POLARSSL_TIMING_C not defined.\n");
     return( 0 );
 }
 #elif defined(_WIN32)