From e41dbc3ddbe30a414e73fa25d9c7c304ffe6989e Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Wed, 9 Feb 2022 04:04:36 +0100
Subject: Add support for wireless pairing

---
 3rd_party/ed25519/seed.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 3rd_party/ed25519/seed.c

(limited to '3rd_party/ed25519/seed.c')

diff --git a/3rd_party/ed25519/seed.c b/3rd_party/ed25519/seed.c
new file mode 100644
index 0000000..11a2e3e
--- /dev/null
+++ b/3rd_party/ed25519/seed.c
@@ -0,0 +1,40 @@
+#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
-- 
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