Add leakage

src/my_lib.c

@@ -17,17 +17,40 @@ void init(void)
 
 void lookup_leakage(uint8_t *input, int inputLength, uint8_t *output)
 {
-	// Empty and constant time
+	for(int i = 0; i < inputLength; ++i)
+		output[i] = lookup[input[i]];
+}
+
+static int NOINLINE branch_leakage_util(uint8_t data)
+{
+	// Use primes and random calculation to keep the compiler from optimizing this function too much
+
+	if(data < 79)
+		return 7;
+
+	if(data < 119)
+		return data;
+
+	return 19 * data + 23;
 }
 
 int branch_leakage(uint8_t *input, int inputLength)
 {
-	// Empty and constant time
-	return lookup[0] + inputLength;
+	int result = 0;
+
+	for(int i = 0; i < inputLength; ++i)
+		result += branch_leakage_util(input[i]);
+
+	return result;
 }
 
 int loop_leakage(uint8_t *input, int inputLength)
 {
-	// Empty and constant time
-	return lookup[0] + inputLength;
+	for(int i = 0; i < input[0]; ++i)
+	{
+		if(lookup[i] < 5)
+			return 1;
+	}
+
+	return 2;
 }