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-rw-r--r--src/keypair.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/keypair.c b/src/keypair.c
new file mode 100644
index 0000000..dc1b8ec
--- /dev/null
+++ b/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);
+}