Avoid using OpenSSL's random number functions.

src/ed25519/seed.c

@@ -1,40 +0,0 @@
-#include "ed25519.h"
-
-#ifndef ED25519_NO_SEED
-
-#ifdef _WIN32
-#include <windows.h>
-#include <wincrypt.h>
-#else
-#include <stdio.h>
-#endif
-
-int ed25519_create_seed(unsigned char *seed) {
-#ifdef _WIN32
-    HCRYPTPROV prov;
-
-    if (!CryptAcquireContext(&prov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))  {
-        return 1;
-    }
-
-    if (!CryptGenRandom(prov, 32, seed))  {
-        CryptReleaseContext(prov, 0);
-        return 1;
-    }
-
-    CryptReleaseContext(prov, 0);
-#else
-    FILE *f = fopen("/dev/urandom", "rb");
-
-    if (f == NULL) {
-        return 1;
-    }
-
-    fread(seed, 1, 32, f);
-    fclose(f);
-#endif
-
-    return 0;
-}
-
-#endif