From 6b2c4d4efe6a30b0b017b59a0bea1f8c1c0af69f Mon Sep 17 00:00:00 2001
From: Dominik Spicher <dominikspicher@gmail.com>
Date: Thu, 10 Mar 2022 15:57:29 +0100
Subject: [PATCH] Allow SharedSecret to be created from byte array

This was accidentally removed in 8b2edad. See also the discussion
on https://github.com/rust-bitcoin/rust-secp256k1/pull/402
---
 src/ecdh.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ecdh.rs b/src/ecdh.rs
index e36553e5a..786912d86 100644
--- a/src/ecdh.rs
+++ b/src/ecdh.rs
@@ -47,6 +47,14 @@ const SHARED_SECRET_SIZE: usize = constants::SECRET_KEY_SIZE;
 pub struct SharedSecret([u8; SHARED_SECRET_SIZE]);
 impl_display_secret!(SharedSecret);
 
+impl From<[u8; SHARED_SECRET_SIZE]> for SharedSecret {
+    fn from(arr: [u8; SHARED_SECRET_SIZE]) -> Self {
+        let mut data = [0u8; SHARED_SECRET_SIZE];
+        data[..SHARED_SECRET_SIZE].copy_from_slice(&arr);
+        Self(data)
+    }
+}
+
 impl SharedSecret {
     /// Creates a new shared secret from a pubkey and secret key.
     #[inline]