#include <assert.h>
#include <string.h>
-void hkdf_sha256(unsigned char *okm, size_t okm_size,
+void hkdf_sha256(void *okm, size_t okm_size,
const void *s, size_t ssize,
const void *k, size_t ksize,
const void *info, size_t isize)
while (okm_size > sizeof(t)) {
memcpy(okm, &t, sizeof(t));
- okm += sizeof(t);
+ okm = (char *)okm + sizeof(t);
okm_size -= sizeof(t);
c++;