diff options
Diffstat (limited to 'crypto/src/math/ec/custom/sec/SecT193Field.cs')
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecT193Field.cs | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecT193Field.cs b/crypto/src/math/ec/custom/sec/SecT193Field.cs index 1a4739b69..59da8b000 100644 --- a/crypto/src/math/ec/custom/sec/SecT193Field.cs +++ b/crypto/src/math/ec/custom/sec/SecT193Field.cs @@ -155,14 +155,9 @@ 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]); - ulong e1 = (u0 & 0x00000000FFFFFFFFUL) ^ (x[3] << 32); - ulong c1 = (u0 >> 32); + ulong c0 = Interleave.Unshuffle(x[0], x[1], out ulong e0); + ulong c1 = Interleave.Unshuffle(x[2] , out ulong e1); + e1 ^= x[3] << 32; z[0] = e0 ^ (c0 << 8); z[1] = e1 ^ (c1 << 8) ^ (c0 >> 56) ^ (c0 << 33); |