diff --git a/include/mbedtls/dhm.h b/include/mbedtls/dhm.h
index 6c8ca03..3f7206e 100644
--- a/include/mbedtls/dhm.h
+++ b/include/mbedtls/dhm.h
@@ -96,7 +96,6 @@
  */
 typedef struct mbedtls_dhm_context
 {
-    size_t MBEDTLS_PRIVATE(len);         /*!<  The size of \p P in Bytes. */
     mbedtls_mpi MBEDTLS_PRIVATE(P);      /*!<  The prime modulus. */
     mbedtls_mpi MBEDTLS_PRIVATE(G);      /*!<  The generator. */
     mbedtls_mpi MBEDTLS_PRIVATE(X);      /*!<  Our secret value. */
@@ -283,6 +282,26 @@
                      void *p_rng );
 
 /**
+ * \brief          This function returns the size of the prime modulus in bits.
+ *
+ * \param ctx      The DHM context to query.
+ *
+ * \return         The size of the prime modulus in bits,
+ *                 i.e. the number n such that 2^(n-1) <= P < 2^n.
+ */
+size_t mbedtls_dhm_get_bitlen( const mbedtls_dhm_context *ctx );
+
+/**
+ * \brief          This function returns the size of the prime modulus in bytes.
+ *
+ * \param ctx      The DHM context to query.
+ *
+ * \return         The size of the prime modulus in bytes,
+ *                 i.e. the number n such that 2^(8*(n-1)) <= P < 2^(8*n).
+ */
+size_t mbedtls_dhm_get_len( const mbedtls_dhm_context *ctx );
+
+/**
  * \brief          This function frees and clears the components
  *                 of a DHM context.
  *