From 019ae7da8e01eab6f9eb90aa96b38b949f3f0af4 Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@electriccoin.co>
Date: Tue, 15 Jun 2021 15:41:33 +0100
Subject: [PATCH] Anchor::{from_bytes, to_bytes}

---
 src/tree.rs | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/tree.rs b/src/tree.rs
index 11597702..c92f946e 100644
--- a/src/tree.rs
+++ b/src/tree.rs
@@ -7,7 +7,7 @@ use crate::{
 };
 use pasta_curves::pallas;
 
-use ff::{Field, PrimeFieldBits};
+use ff::{Field, PrimeField, PrimeFieldBits};
 use rand::RngCore;
 use std::iter;
 
@@ -21,6 +21,18 @@ impl From<pallas::Base> for Anchor {
     }
 }
 
+impl Anchor {
+    /// Parses an Orchard anchor from a byte encoding.
+    pub fn from_bytes(bytes: [u8; 32]) -> Option<Anchor> {
+        pallas::Base::from_repr(bytes).map(Anchor)
+    }
+
+    /// Returns the byte encoding of this anchor.
+    pub fn to_bytes(self) -> [u8; 32] {
+        self.0.to_repr()
+    }
+}
+
 #[derive(Debug)]
 pub struct MerklePath {
     position: u32,