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authorPeter Dettman <peter.dettman@bouncycastle.org>2018-04-15 21:12:11 +0700
committerPeter Dettman <peter.dettman@bouncycastle.org>2018-04-15 21:12:11 +0700
commitd79a501212d4012139c714e361577669c75171aa (patch)
treef78e8c7d34c9448698e17bc341fd8d293814dd3e /crypto/src/math/raw/Nat160.cs
parentUpdate Readme.html for SHA-3 perf. opts. (diff)
downloadBouncyCastle.NET-ed25519-d79a501212d4012139c714e361577669c75171aa.tar.xz
Cache-safety for EC lookup tables
- creation of cache-safe lookup tables delegated to ECCurve
- FixedPointCombMultiplier uses cache-safe lookup table
- FixedPointCombMultiplier avoids BigInteger.TestBit
Diffstat (limited to 'crypto/src/math/raw/Nat160.cs')
-rw-r--r--crypto/src/math/raw/Nat160.cs9
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/src/math/raw/Nat160.cs b/crypto/src/math/raw/Nat160.cs
index 1fd00e576..57212cae0 100644
--- a/crypto/src/math/raw/Nat160.cs
+++ b/crypto/src/math/raw/Nat160.cs
@@ -129,6 +129,15 @@ namespace Org.BouncyCastle.Math.Raw
             z[4] = x[4];
         }
 
+        public static void Copy(uint[] x, int xOff, uint[] z, int zOff)
+        {
+            z[zOff + 0] = x[xOff + 0];
+            z[zOff + 1] = x[xOff + 1];
+            z[zOff + 2] = x[xOff + 2];
+            z[zOff + 3] = x[xOff + 3];
+            z[zOff + 4] = x[xOff + 4];
+        }
+
         public static uint[] Create()
         {
             return new uint[5];