From 490b81c1a1c939220c4050f80defaf280e54da46 Mon Sep 17 00:00:00 2001
From: zzz <zzz@mail.i2p>
Date: Wed, 6 Feb 2019 12:35:27 +0000
Subject: [PATCH] Crypto: Shortcut GroupElement representation conversion
---
.../src/net/i2p/crypto/eddsa/math/GroupElement.java | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/core/java/src/net/i2p/crypto/eddsa/math/GroupElement.java b/core/java/src/net/i2p/crypto/eddsa/math/GroupElement.java
index 4179a2b3f9..11e925530a 100644
--- a/core/java/src/net/i2p/crypto/eddsa/math/GroupElement.java
+++ b/core/java/src/net/i2p/crypto/eddsa/math/GroupElement.java
@@ -483,11 +483,11 @@ public class GroupElement implements Serializable {
* @return A new group element in the given representation.
*/
private GroupElement toRep(final Representation repr) {
+ if (this.repr == repr)
+ return this;
switch (this.repr) {
case P2:
switch (repr) {
- case P2:
- return p2(this.curve, this.X, this.Y, this.Z);
default:
throw new IllegalArgumentException();
}
@@ -495,8 +495,6 @@ public class GroupElement implements Serializable {
switch (repr) {
case P2:
return p2(this.curve, this.X, this.Y, this.Z);
- case P3:
- return p3(this.curve, this.X, this.Y, this.Z, this.T);
case CACHED:
return cached(this.curve, this.Y.add(this.X), this.Y.subtract(this.X), this.Z, this.T.multiply(this.curve.get2D()));
default:
@@ -510,22 +508,16 @@ public class GroupElement implements Serializable {
return p3(this.curve, this.X.multiply(this.T), Y.multiply(this.Z), this.Z.multiply(this.T), this.X.multiply(this.Y), false);
case P3PrecomputedDouble:
return p3(this.curve, this.X.multiply(this.T), Y.multiply(this.Z), this.Z.multiply(this.T), this.X.multiply(this.Y), true);
- case P1P1:
- return p1p1(this.curve, this.X, this.Y, this.Z, this.T);
default:
throw new IllegalArgumentException();
}
case PRECOMP:
switch (repr) {
- case PRECOMP:
- return precomp(this.curve, this.X, this.Y, this.Z);
default:
throw new IllegalArgumentException();
}
case CACHED:
switch (repr) {
- case CACHED:
- return cached(this.curve, this.X, this.Y, this.Z, this.T);
default:
throw new IllegalArgumentException();
}
--
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