1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/src/math/raw/Interleave.cs b/crypto/src/math/raw/Interleave.cs
index 4d866c245..409ab83e8 100644
--- a/crypto/src/math/raw/Interleave.cs
+++ b/crypto/src/math/raw/Interleave.cs
@@ -135,6 +135,21 @@ namespace Org.BouncyCastle.Math.Raw
return x;
}
+ internal static ulong Unshuffle(ulong x, out ulong even)
+ {
+ ulong u0 = Unshuffle(x);
+ even = u0 & 0x00000000FFFFFFFFUL;
+ return u0 >> 32;
+ }
+
+ internal static ulong Unshuffle(ulong x0, ulong x1, out ulong even)
+ {
+ ulong u0 = Unshuffle(x0);
+ ulong u1 = Unshuffle(x1);
+ even = (u1 << 32) | (u0 & 0x00000000FFFFFFFFUL);
+ return (u0 >> 32) | (u1 & 0xFFFFFFFF00000000UL);
+ }
+
internal static uint Unshuffle2(uint x)
{
// "unshuffle" (twice) even bits to low half and odd bits to high half
|
