Rewrite, cleanup, configurable ChaCha rounds.

benchmarks/charand.c

@@ -1,16 +1,20 @@
-#include "chacha20.c"
+#include "chacha20.h"
 #include <stdio.h>
 #include <stdlib.h>
 
-int main(void)
-{
+int main(void) {
     uint64_t N = 1000000;
     uint8_t* buf = malloc(N);
     const uint8_t key[32] = {0};
     const uint8_t nonce[16] = {0};
-    for (uint64_t i = 0; i < 1000; ++i)
-    {
+    for (uint64_t i = 0; i < 1000; ++i) {
         cha_generate(buf, N, key, nonce);
     }
+    for (unsigned i = 0; i < 16; ++i)
+        printf("%02X ", buf[i]);
+    for (unsigned i = 0; i < 16; ++i)
+        printf(" %02X", buf[1024 + i]);
+
+    puts("");
     free(buf);
 }