X25519 key imported is little-endian

canokeys · Dec 20, 2024 · 1d369ad · 1d369ad
1 parent aa0a466
commit 1d369ad
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/key.c b/src/key.c
@@ -136,6 +136,9 @@ int ck_parse_piv(ck_key_t *key, const uint8_t *buf, size_t buf_len) {
       return KEY_ERR_LENGTH;
     }
     memcpy(key->ecc.pri, p, PRIVATE_KEY_LENGTH[key->meta.type]);
+    if (key->meta.type == X25519) {
+      swap_big_number_endian(key->ecc.pri); // Private key of x25519 is encoded in little endian
+    }
     if (!ecc_verify_private_key(key->meta.type, &key->ecc)) {
       memzero(key, sizeof(ck_key_t));
       return KEY_ERR_DATA;