From 8337a895d46fd1d4e00a7d39dd2e858997e2bc3d Mon Sep 17 00:00:00 2001
From: Henry de Valence <hdevalence@hdevalence.ca>
Date: Fri, 17 Nov 2017 13:32:22 -0800
Subject: [PATCH] Only compress ExtendedPoints

---
 src/curve_models/mod.rs | 12 ------------
 src/edwards.rs          |  9 ++++++++-
 2 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/src/curve_models/mod.rs b/src/curve_models/mod.rs
index 7669a5e..aba35fe 100644
--- a/src/curve_models/mod.rs
+++ b/src/curve_models/mod.rs
@@ -232,18 +232,6 @@ impl ProjectivePoint {
         }
     }
 
-    /// Convert this point to a `CompressedEdwardsY`
-    pub fn compress(&self) -> CompressedEdwardsY {
-        let recip = self.Z.invert();
-        let x = &self.X * &recip;
-        let y = &self.Y * &recip;
-        let mut s: [u8; 32];
-
-        s      =  y.to_bytes();
-        s[31] ^= (x.is_negative() << 7) as u8;
-        CompressedEdwardsY(s)
-    }
-
     /// Convert this projective point in the Edwards model to its equivalent
     /// projective point on the Montgomery form of the curve.
     ///
diff --git a/src/edwards.rs b/src/edwards.rs
index 58970e7..b2fb397 100644
--- a/src/edwards.rs
+++ b/src/edwards.rs
@@ -277,7 +277,14 @@ impl ExtendedPoint {
 
     /// Compress this point to `CompressedEdwardsY` format.
     pub fn compress(&self) -> CompressedEdwardsY {
-        self.to_projective().compress()
+        let recip = self.Z.invert();
+        let x = &self.X * &recip;
+        let y = &self.Y * &recip;
+        let mut s: [u8; 32];
+
+        s      =  y.to_bytes();
+        s[31] ^= (x.is_negative() << 7) as u8;
+        CompressedEdwardsY(s)
     }
 }