1 files changed, 27 insertions, 0 deletions
diff --git a/src/crypto/pubkey.c b/src/crypto/pubkey.c
new file mode 100644
index 0000000..1224b07
--- /dev/null
+++ b/src/crypto/pubkey.c
@@ -0,0 +1,27 @@
+#include "curve25519.h"
+#include "encoding.h"
+
+int wg_pubkey_base64(char const * privkey, char * base64) {
+
+	uint8_t key[WG_KEY_LEN] __attribute((aligned(sizeof(uintptr_t))));
+
+	int i;
+	for(i = 0; privkey[i] && i < WG_KEY_LEN_BASE64 - 1; i++)
+		base64[i] = privkey[i];
+
+	base64[WG_KEY_LEN_BASE64 - 1] = '\0';
+
+	if(i != WG_KEY_LEN_BASE64 - 1 || privkey[i]) {
+		return 1;
+	}
+
+	if(!key_from_base64(key, base64)) {
+		return 1;
+	}
+
+	curve25519_generate_public(key, key);
+
+	key_to_base64(base64, key);
+
+	return 0;
+}