From f051b0b714b98d560b7dbe38009396dc68d3d3e9 Mon Sep 17 00:00:00 2001
From: "Andrew Chaney (netuoso)" <andrewc@pobox.com>
Date: Thu, 21 Jun 2018 12:08:04 -0500
Subject: [PATCH 1/3] small fix when sending
 STM1111111111111111111111111111111114T1Anm to disable witness

---
 src/auth/ecc/src/key_public.js | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/auth/ecc/src/key_public.js b/src/auth/ecc/src/key_public.js
index 57233188..30024220 100644
--- a/src/auth/ecc/src/key_public.js
+++ b/src/auth/ecc/src/key_public.js
@@ -20,10 +20,20 @@ class PublicKey {
     }
 
     static fromBuffer(buffer) {
-        return new PublicKey(ecurve.Point.decodeFrom(secp256k1, buffer));
-    }
-
-    toBuffer(compressed = this.Q.compressed) {
+        if (
+            buffer.toString("hex") ===
+            "000000000000000000000000000000000000000000000000000000000000000000"
+        )
+            return new PublicKey(null);
+        return new PublicKey(Point.decodeFrom(secp256k1, buffer));
+    }
+
+    toBuffer(compressed = this.Q ? this.Q.compressed : null) {
+        if (this.Q === null)
+            return Buffer.from(
+                "000000000000000000000000000000000000000000000000000000000000000000",
+                "hex"
+            );
         return this.Q.getEncoded(compressed);
     }
 

From ea40b3ad21c027e24a5ec74f3083cf989025f5f1 Mon Sep 17 00:00:00 2001
From: "Andrew Chaney (netuoso)" <andrewc@pobox.com>
Date: Thu, 21 Jun 2018 13:16:23 -0500
Subject: [PATCH 2/3] Fix typo that removed call to ecurve

---
 src/auth/ecc/src/key_public.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/auth/ecc/src/key_public.js b/src/auth/ecc/src/key_public.js
index 30024220..81791b08 100644
--- a/src/auth/ecc/src/key_public.js
+++ b/src/auth/ecc/src/key_public.js
@@ -25,7 +25,7 @@ class PublicKey {
             "000000000000000000000000000000000000000000000000000000000000000000"
         )
             return new PublicKey(null);
-        return new PublicKey(Point.decodeFrom(secp256k1, buffer));
+        return new PublicKey(ecurve.Point.decodeFrom(secp256k1, buffer));
     }
 
     toBuffer(compressed = this.Q ? this.Q.compressed : null) {

From 7418a74e744d0eedcfc5894332118072d62bece7 Mon Sep 17 00:00:00 2001
From: roadscape <roadscape@users.noreply.github.com>
Date: Tue, 17 Jul 2018 14:42:42 -0500
Subject: [PATCH 3/3] add null key tests

---
 test/KeyFormats.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/test/KeyFormats.js b/test/KeyFormats.js
index 530e2fee..a96b7d97 100644
--- a/test/KeyFormats.js
+++ b/test/KeyFormats.js
@@ -70,6 +70,16 @@ var test = function(key) {
             var address = Address.fromPublic(public_key, true, 56);
             assert.equal(key.Compressed_PTS, address.toString());
         });
+        
+        it("null hex to pubkey", function() {
+            var public_key = PublicKey.fromHex(key.null_hex);
+            assert.equal(key.null_address, public_key.toPublicKeyString());
+        });
+        
+        it("null pubkey to hex", function() {
+            var public_key = PublicKey.fromString(key.null_address);
+            assert.equal(key.null_hex, public_key.toHex());
+        });
     });
 };
 
@@ -87,6 +97,9 @@ test({
     Uncompressed_BTC:	"STMLAFmEtM8as1mbmjVcj5dphLdPguXquimn",
     Compressed_BTC:	"STMANNTSEaUviJgWLzJBersPmyFZBY4jJETY",
     Uncompressed_PTS:	"STMEgj7RM6FBwSoccGaESJLC3Mi18785bM3T",
-    Compressed_PTS:	"STMD5rYtofD6D4UHJH6mo953P5wpBfMhdMEi"
+    Compressed_PTS:	"STMD5rYtofD6D4UHJH6mo953P5wpBfMhdMEi",
+    // https://github.com/steemit/steem-js/issues/267
+    null_hex: "000000000000000000000000000000000000000000000000000000000000000000",
+    null_address: "STM1111111111111111111111111111111114T1Anm"
 });