diff --git a/include/polarssl/dhm.h b/include/polarssl/dhm.h
index c7837d2..ba6e424 100644
--- a/include/polarssl/dhm.h
+++ b/include/polarssl/dhm.h
@@ -40,13 +40,54 @@
 #define POLARSSL_ERR_DHM_CALC_SECRET_FAILED                -0x3300  /**< Calculation of the DHM secret failed. */
 
 /**
+ * RFC 3526 defines a number of standardized Diffie-Hellman groups
+ * for IKE.
  * RFC 5114 defines a number of standardized Diffie-Hellman groups
- * that can be used. Some are included here for convenience.
+ * that can be used.
+ *
+ * Some are included here for convenience.
  *
  * Included are:
- *  2.1.  1024-bit MODP Group with 160-bit Prime Order Subgroup
- *  2.2.  2048-bit MODP Group with 224-bit Prime Order Subgroup
+ *  RFC 3526 3.    2048-bit MODP Group
+ *  RFC 3526 4.    3072-bit MODP Group
+ *  RFC 5114 2.1.  1024-bit MODP Group with 160-bit Prime Order Subgroup
+ *  RFC 5114 2.2.  2048-bit MODP Group with 224-bit Prime Order Subgroup
  */
+#define POLARSSL_DHM_RFC3526_MODP_2048_P               \
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" \
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" \
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" \
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" \
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" \
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" \
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" \
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" \
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" \
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" \
+    "15728E5A8AACAA68FFFFFFFFFFFFFFFF"
+
+#define POLARSSL_DHM_RFC3526_MODP_2048_G          "02"
+
+#define POLARSSL_DHM_RFC3526_MODP_3072_P               \
+    "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" \
+    "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" \
+    "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" \
+    "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" \
+    "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" \
+    "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" \
+    "83655D23DCA3AD961C62F356208552BB9ED529077096966D" \
+    "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" \
+    "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" \
+    "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" \
+    "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" \
+    "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" \
+    "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" \
+    "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" \
+    "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" \
+    "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF"
+
+#define POLARSSL_DHM_RFC3526_MODP_3072_G          "02"
+
 #define POLARSSL_DHM_RFC5114_MODP_1024_P               \
     "B10B8F96A080E01DDE92DE5EAE5D54EC52C99FBCFB06A3C6" \
     "9A6A9DCA52D23B616073E28675A23D189838EF1E2EE652C0" \