diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT409Field.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT409Field.cs | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT409Field.cs b/crypto/src/math/ec/custom/sec/SecT409Field.cs index c35d3cef0..0fb7377f6 100644 --- a/crypto/src/math/ec/custom/sec/SecT409Field.cs +++ b/crypto/src/math/ec/custom/sec/SecT409Field.cs @@ -191,22 +191,10 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec public static void Sqrt(ulong[] x, ulong[] z) { - ulong u0, u1; - u0 = Interleave.Unshuffle(x[0]); u1 = Interleave.Unshuffle(x[1]); - ulong e0 = (u0 & 0x00000000FFFFFFFFUL) | (u1 << 32); - ulong c0 = (u0 >> 32) | (u1 & 0xFFFFFFFF00000000UL); - - u0 = Interleave.Unshuffle(x[2]); u1 = Interleave.Unshuffle(x[3]); - ulong e1 = (u0 & 0x00000000FFFFFFFFUL) | (u1 << 32); - ulong c1 = (u0 >> 32) | (u1 & 0xFFFFFFFF00000000UL); - - u0 = Interleave.Unshuffle(x[4]); u1 = Interleave.Unshuffle(x[5]); - ulong e2 = (u0 & 0x00000000FFFFFFFFUL) | (u1 << 32); - ulong c2 = (u0 >> 32) | (u1 & 0xFFFFFFFF00000000UL); - - u0 = Interleave.Unshuffle(x[6]); - ulong e3 = (u0 & 0x00000000FFFFFFFFUL); - ulong c3 = (u0 >> 32); + ulong c0 = Interleave.Unshuffle(x[0], x[1], out ulong e0); + ulong c1 = Interleave.Unshuffle(x[2], x[3], out ulong e1); + ulong c2 = Interleave.Unshuffle(x[4], x[5], out ulong e2); + ulong c3 = Interleave.Unshuffle(x[6] , out ulong e3); z[0] = e0 ^ (c0 << 44); z[1] = e1 ^ (c1 << 44) ^ (c0 >> 20); |