Add fixed width scalarmult.

2 files changed, 56 insertions, 2 deletions

diff --git a/test/test_bn.c b/test/test_bn.c
index a77fe9a..9e3fd6f 100644
--- a/test/test_bn.c
+++ b/test/test_bn.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include "bn/bn.h"
 
 int test_wsliding_ltr() {
@@ -23,6 +24,9 @@ int test_wsliding_ltr() {
         }
     }
     printf("OK\n");
+    bn_clear(&bn);
+    free(ws->data);
+    free(ws);
     return 0;
 }
 
@@ -48,9 +52,40 @@ int test_wsliding_rtl() {
         }
     }
     printf("OK\n");
+    bn_clear(&bn);
+    free(ws->data);
+    free(ws);
+    return 0;
+}
+
+int test_convert_base() {
+    printf("test_convert-base: ");
+    bn_t bn;
+    bn_init(&bn);
+    bn_from_int(5, &bn);
+    base_t *bs = bn_convert_base(&bn, 2);
+    if (bs == NULL) {
+        printf("NULL\n");
+        return 1;
+    }
+    if (bs->length != 3) {
+        printf("Bad length (%li instead of 3)\n", bs->length);
+        return 1;
+    }
+    uint8_t expected[3] = {1, 0, 1};
+    for (int i = 0; i < 3; i++) {
+        if (bs->data[i] != expected[i]) {
+            printf("Bad data (%i insead of %i)\n", bs->data[i], expected[i]);
+            return 1;
+        }
+    }
+    printf("OK\n");
+    bn_clear(&bn);
+    free(bs->data);
+    free(bs);
     return 0;
 }
 
 int main(void) {
-    return test_wsliding_ltr() + test_wsliding_rtl();
-}
\ No newline at end of file
+    return test_wsliding_ltr() + test_wsliding_rtl() + test_convert_base();
+}
diff --git a/test/test_impl.py b/test/test_impl.py
index 147792e..c125ce6 100644
--- a/test/test_impl.py
+++ b/test/test_impl.py
@@ -15,6 +15,7 @@ from pyecsca.ec.mult import (
     AccumulationOrder,
     ProcessingDirection,
     ScalarMultiplier,
+    FixedWindowLTRMultiplier,
 )
 from pyecsca.ec.signature import ECDSA_SHA1, SignatureResult
 
@@ -148,6 +149,24 @@ def additional(request):
             ),
             id="SLI2",
         ),
+        pytest.param(
+            (
+                FixedWindowLTRMultiplier,
+                "fixed",
+                ["add-1998-cmo", "dbl-1998-cmo"],
+                {"m": 4},
+            ),
+            id="FIX1",
+        ),
+        pytest.param(
+            (
+                FixedWindowLTRMultiplier,
+                "fixed",
+                ["add-1998-cmo", "dbl-1998-cmo"],
+                {"m": 5},
+            ),
+            id="FIX2",
+        ),
     ],
 )
 def target(request, additional, secp128r1) -> ImplTarget: