1 files changed, 18 insertions, 0 deletions
diff --git a/src/libsodium/crypto_sign/ed25519/sign_ed25519_api.c b/src/libsodium/crypto_sign/ed25519/sign_ed25519_api.c
index 9f999d2..7ba6b4c 100644
--- a/src/libsodium/crypto_sign/ed25519/sign_ed25519_api.c
+++ b/src/libsodium/crypto_sign/ed25519/sign_ed25519_api.c
@@ -1,3 +1,6 @@
+
+#include <string.h>
+
 #include "crypto_sign_ed25519.h"
 
 size_t
@@ -19,3 +22,18 @@ size_t
 crypto_sign_ed25519_secretkeybytes(void) {
     return crypto_sign_ed25519_SECRETKEYBYTES;
 }
+
+int
+crypto_sign_ed25519_sk_to_seed(unsigned char *seed, const unsigned char *sk)
+{
+    memmove(seed, sk, crypto_sign_ed25519_SEEDBYTES);
+    return 0;
+}
+
+int
+crypto_sign_ed25519_sk_to_pk(unsigned char *pk, const unsigned char *sk)
+{
+    memmove(pk, sk + crypto_sign_ed25519_SEEDBYTES,
+            crypto_sign_ed25519_PUBLICKEYBYTES);
+    return 0;
+}