diff --git a/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs b/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
index a3a51f1..6121855 100644
--- a/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
+++ b/crates/anychain-kms/src/bip32/extended_key/extended_private_key.rs
@@ -1,8 +1,7 @@
 //! Extended private keys
 
 use crate::bip32::{
-    ChildNumber, Depth, Error, ExtendedKey, ExtendedKeyAttrs, ExtendedPublicKey, HmacSha512,
-    KeyFingerprint, Prefix, PrivateKey, PublicKey, Result, KEY_SIZE,
+    ChildNumber, Depth, Error, ExtendedKey, ExtendedKeyAttrs, ExtendedPublicKey, HmacSha512, KeyFingerprint, Prefix, PrivateKey, PublicKey, Result, XpubEd25519, XpubSecp256k1, KEY_SIZE
 };
 use core::{
     fmt::{self, Debug},
@@ -250,4 +249,4 @@ where
             Err(Error::Crypto)
         }
     }
-}
+}
\ No newline at end of file
diff --git a/crates/anychain-kms/src/bip32/extended_key/extended_public_key.rs b/crates/anychain-kms/src/bip32/extended_key/extended_public_key.rs
index 9ad7f04..8abf36c 100644
--- a/crates/anychain-kms/src/bip32/extended_key/extended_public_key.rs
+++ b/crates/anychain-kms/src/bip32/extended_key/extended_public_key.rs
@@ -96,7 +96,12 @@ where
             attrs: self.attrs.clone(),
             key_bytes: {
                 let mut key_bytes = [0u8; KEY_SIZE + 1];
-                key_bytes.copy_from_slice(&self.to_bytes());
+                let bytes = self.to_bytes();
+                let bytes = match bytes.len() {
+                    KEY_SIZE => [vec![0u8], bytes].concat(),
+                    _ => bytes,
+                };
+                key_bytes.copy_from_slice(&bytes);
                 key_bytes
             },
         }
@@ -148,4 +153,4 @@ where
             Err(Error::Crypto)
         }
     }
-}
+}
\ No newline at end of file