From 41fb98c7711a9519961eb83421597907bf61e776 Mon Sep 17 00:00:00 2001
From: samkim-crypto <skim13@cs.stanford.edu>
Date: Thu, 20 Jan 2022 17:27:31 -0400
Subject: [PATCH] zk-token_sdk: define defaults for pod ElGamal/AES ciphertexts
 (#22532)

---
 zk-token-sdk/src/zk_token_elgamal/pod.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/zk-token-sdk/src/zk_token_elgamal/pod.rs b/zk-token-sdk/src/zk_token_elgamal/pod.rs
index 5721aa041..33a10aab4 100644
--- a/zk-token-sdk/src/zk_token_elgamal/pod.rs
+++ b/zk-token-sdk/src/zk_token_elgamal/pod.rs
@@ -19,7 +19,7 @@ impl fmt::Debug for ElGamalCiphertext {
     }
 }
 
-#[derive(Clone, Copy, Pod, Zeroable, PartialEq)]
+#[derive(Clone, Copy, Default, Pod, Zeroable, PartialEq)]
 #[repr(transparent)]
 pub struct ElGamalPubkey(pub [u8; 32]);
 
@@ -29,7 +29,7 @@ impl fmt::Debug for ElGamalPubkey {
     }
 }
 
-#[derive(Clone, Copy, Pod, Zeroable, PartialEq)]
+#[derive(Clone, Copy, Default, Pod, Zeroable, PartialEq)]
 #[repr(transparent)]
 pub struct PedersenCommitment(pub [u8; 32]);
 
@@ -39,7 +39,7 @@ impl fmt::Debug for PedersenCommitment {
     }
 }
 
-#[derive(Clone, Copy, Pod, Zeroable, PartialEq)]
+#[derive(Clone, Copy, Default, Pod, Zeroable, PartialEq)]
 #[repr(transparent)]
 pub struct PedersenDecryptHandle(pub [u8; 32]);
 
@@ -114,3 +114,9 @@ impl fmt::Debug for AeCiphertext {
         write!(f, "{:?}", self.0)
     }
 }
+
+impl Default for AeCiphertext {
+    fn default() -> Self {
+        Self::zeroed()
+    }
+}