diff --git a/library/bignum_mod_raw.c b/library/bignum_mod_raw.c
index fbd90bf..721efc8 100644
--- a/library/bignum_mod_raw.c
+++ b/library/bignum_mod_raw.c
@@ -176,6 +176,36 @@
 
 /* BEGIN MERGE SLOT 6 */
 
+int mbedtls_mpi_mod_raw_canonical_to_modulus_rep(
+    mbedtls_mpi_uint *X,
+    const mbedtls_mpi_mod_modulus *N )
+{
+    switch( N->int_rep )
+    {
+        case MBEDTLS_MPI_MOD_REP_MONTGOMERY:
+            return( mbedtls_mpi_mod_raw_to_mont_rep( X, N ) );
+        case MBEDTLS_MPI_MOD_REP_OPT_RED:
+            return( 0 );
+        default:
+            return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
+    }
+}
+
+int mbedtls_mpi_mod_raw_modulus_to_canonical_rep(
+    mbedtls_mpi_uint *X,
+    const mbedtls_mpi_mod_modulus *N )
+{
+    switch( N->int_rep )
+    {
+        case MBEDTLS_MPI_MOD_REP_MONTGOMERY:
+            return( mbedtls_mpi_mod_raw_from_mont_rep( X, N ) );
+        case MBEDTLS_MPI_MOD_REP_OPT_RED:
+            return( 0 );
+        default:
+            return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
+    }
+}
+
 int mbedtls_mpi_mod_raw_random( mbedtls_mpi_uint *X,
                                 mbedtls_mpi_uint min,
                                 const mbedtls_mpi_mod_modulus *N,
diff --git a/library/bignum_mod_raw.h b/library/bignum_mod_raw.h
index 87e241f..dad060b 100644
--- a/library/bignum_mod_raw.h
+++ b/library/bignum_mod_raw.h
@@ -297,6 +297,40 @@
 
 /* BEGIN MERGE SLOT 6 */
 
+/** Convert an MPI from canonical representation (little-endian limb array)
+ * to the representation associated with the modulus.
+ *
+ * \param[in,out] X The limb array to convert.
+ *                  It must have as many limbs as \p N.
+ *                  It is converted in place.
+ *                  If this function returns an error, the content of \p X
+ *                  is unspecified.
+ * \param[in] N     The modulus structure.
+ *
+ *\ return          \c 0 if successful.
+ *                  Otherwise an \c MBEDTLS_ERR_MPI_xxx error code.
+ */
+int mbedtls_mpi_mod_raw_canonical_to_modulus_rep(
+    mbedtls_mpi_uint *X,
+    const mbedtls_mpi_mod_modulus *N );
+
+/** Convert an MPI from the representation associated with the modulus
+ * to canonical representation (little-endian limb array).
+ *
+ * \param[in,out] X The limb array to convert.
+ *                  It must have as many limbs as \p N.
+ *                  It is converted in place.
+ *                  If this function returns an error, the content of \p X
+ *                  is unspecified.
+ * \param[in] N     The modulus structure.
+ *
+ *\ return          \c 0 if successful.
+ *                  Otherwise an \c MBEDTLS_ERR_MPI_xxx error code.
+ */
+int mbedtls_mpi_mod_raw_modulus_to_canonical_rep(
+    mbedtls_mpi_uint *X,
+    const mbedtls_mpi_mod_modulus *N );
+
 /** Generate a random number uniformly in a range.
  *
  * This function generates a random number between \p min inclusive and