hogweed-benchmark: Use uint8_t for curve25519 values.

ChangeLog

 2016-08-05  Niels Möller  <nisse@lysator.liu.se>
 
-	* examples/hogweed-benchmark.c (bench_rsa_init): Use uint8_t for
-	sexp strings.
+	* examples/hogweed-benchmark.c: Use uint8_t for curve25519 values.
+	(bench_rsa_init): Use uint8_t for sexp strings.
 	(bench_dsa_init): Likewise.
 
 	* examples/io.c (read_file): Use size_t for sizes, and uint8_t for

examples/hogweed-benchmark.c

@@ -652,15 +652,15 @@ bench_openssl_ecdsa_clear (void *p)
 
 struct curve25519_ctx
 {
-  char x[CURVE25519_SIZE];
-  char s[CURVE25519_SIZE];
+  uint8_t x[CURVE25519_SIZE];
+  uint8_t s[CURVE25519_SIZE];
 };
 
 static void
 bench_curve25519_mul_g (void *p)
 {
   struct curve25519_ctx *ctx = p;
-  char q[CURVE25519_SIZE];
+  uint8_t q[CURVE25519_SIZE];
   curve25519_mul_g (q, ctx->s);
 }
 
@@ -668,7 +668,7 @@ static void
 bench_curve25519_mul (void *p)
 {
   struct curve25519_ctx *ctx = p;
-  char q[CURVE25519_SIZE];
+  uint8_t q[CURVE25519_SIZE];
   curve25519_mul (q, ctx->s, ctx->x);
 }