Fix integer overrun and print progress.

[shamirs] / shamirssecret.c

diff --git a/shamirssecret.c b/shamirssecret.c
index 66442953709a93ffa6a01db4e00863d860fc596d..617f959cd1f846ecd2b42934b2b7b9bb9fd8b1d2 100644 (file)
--- a/shamirssecret.c
+++ b/shamirssecret.c
@@ -275,13 +275,16 @@ int main(int argc, char* argv[]) {
 
                uint8_t a[k], D[n][secret_length];
 
-               for (uint8_t i = 0; i < secret_length; i++) {
+               for (uint32_t i = 0; i < secret_length; i++) {
                        a[0] = secret[i];
 
                        for (uint8_t j = 1; j < k; j++)
                                assert(fread(&a[j], sizeof(uint8_t), 1, random) == 1);
                        for (uint8_t j = 0; j < n; j++)
                                D[j][i] = calculateQ(a, k, j+1);
+
+                       if (i % 32 == 0 && i != 0)
+                               printf("Finished processing %u bytes.\n", i);
                }
 
                char out_file_name_buf[strlen(out_file_param) + 4];
@@ -337,7 +340,7 @@ int main(int argc, char* argv[]) {
 
                uint8_t secret[MAX_LENGTH];
 
-               uint8_t i = 0;
+               uint32_t i = 0;
                while (fread(&q[0], sizeof(uint8_t), 1, files_fps[0]) == 1) {
                        for (uint8_t j = 1; j < k; j++) {
                                if (fread(&q[j], sizeof(uint8_t), 1, files_fps[j]) != 1)