From da776f86b42946715c27edd64f7558b9d5080df1 Mon Sep 17 00:00:00 2001
From: patrick-scho
Date: Mon, 13 Nov 2023 19:58:33 +0100
Subject: add dependencies to repo

---
 ext/olm/lib/ed25519/src/keypair.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 ext/olm/lib/ed25519/src/keypair.c

(limited to 'ext/olm/lib/ed25519/src/keypair.c')

diff --git a/ext/olm/lib/ed25519/src/keypair.c b/ext/olm/lib/ed25519/src/keypair.c
new file mode 100644
index 0000000..dc1b8ec
--- /dev/null
+++ b/ext/olm/lib/ed25519/src/keypair.c
@@ -0,0 +1,16 @@
+#include "ed25519.h"
+#include "sha512.h"
+#include "ge.h"
+
+
+void ed25519_create_keypair(unsigned char *public_key, unsigned char *private_key, const unsigned char *seed) {
+    ge_p3 A;
+
+    sha512(seed, 32, private_key);
+    private_key[0] &= 248;
+    private_key[31] &= 63;
+    private_key[31] |= 64;
+
+    ge_scalarmult_base(&A, private_key);
+    ge_p3_tobytes(public_key, &A);
+}
-- 
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