diff options
Diffstat (limited to 'crypto/src/math/raw/Nat.cs')
| -rw-r--r-- | crypto/src/math/raw/Nat.cs | 124 |
1 files changed, 120 insertions, 4 deletions
diff --git a/crypto/src/math/raw/Nat.cs b/crypto/src/math/raw/Nat.cs index 89b6881d3..3bc983430 100644 --- a/crypto/src/math/raw/Nat.cs +++ b/crypto/src/math/raw/Nat.cs @@ -1580,6 +1580,9 @@ namespace Org.BouncyCastle.Math.Raw public static uint ShiftUpBit(int len, uint[] z, uint c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit(len, z.AsSpan(0, len), c); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1602,10 +1605,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 31; +#endif } public static uint ShiftUpBit(int len, uint[] z, int zOff, uint c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit(len, z.AsSpan(zOff, len), c); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1628,6 +1635,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 31; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -1660,6 +1668,9 @@ namespace Org.BouncyCastle.Math.Raw public static uint ShiftUpBit(int len, uint[] x, uint c, uint[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit(len, x.AsSpan(0, len), c, z.AsSpan(0, len)); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1682,10 +1693,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 31; +#endif } public static uint ShiftUpBit(int len, uint[] x, int xOff, uint c, uint[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit(len, x.AsSpan(xOff, len), c, z.AsSpan(zOff, len)); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1708,6 +1723,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 31; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -1740,6 +1756,9 @@ namespace Org.BouncyCastle.Math.Raw public static ulong ShiftUpBit64(int len, ulong[] x, ulong c, ulong[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit64(len, x.AsSpan(0, len), c, z.AsSpan(0, len)); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1762,10 +1781,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 63; +#endif } public static ulong ShiftUpBit64(int len, ulong[] x, int xOff, ulong c, ulong[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBit64(len, x.AsSpan(xOff, len), c, z.AsSpan(zOff, len)); +#else int i = 0, limit4 = len - 4; while (i <= limit4) { @@ -1788,6 +1811,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> 63; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -1820,6 +1844,9 @@ namespace Org.BouncyCastle.Math.Raw public static uint ShiftUpBits(int len, uint[] z, int bits, uint c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits(len, z.AsSpan(0, len), bits, c); +#else Debug.Assert(bits > 0 && bits < 32); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -1843,10 +1870,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } public static uint ShiftUpBits(int len, uint[] z, int zOff, int bits, uint c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits(len, z.AsSpan(zOff, len), bits, c); +#else Debug.Assert(bits > 0 && bits < 32); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -1870,6 +1901,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -1903,6 +1935,9 @@ namespace Org.BouncyCastle.Math.Raw public static uint ShiftUpBits(int len, uint[] x, int bits, uint c, uint[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits(len, x.AsSpan(0, len), bits, c, z.AsSpan(0, len)); +#else Debug.Assert(bits > 0 && bits < 32); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -1926,10 +1961,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } public static uint ShiftUpBits(int len, uint[] x, int xOff, int bits, uint c, uint[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits(len, x.AsSpan(xOff, len), bits, c, z.AsSpan(zOff, len)); +#else Debug.Assert(bits > 0 && bits < 32); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -1953,6 +1992,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -1986,6 +2026,9 @@ namespace Org.BouncyCastle.Math.Raw public static ulong ShiftUpBits64(int len, ulong[] z, int bits, ulong c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits64(len, z.AsSpan(0, len), bits, c); +#else Debug.Assert(bits > 0 && bits < 64); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -2009,10 +2052,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } public static ulong ShiftUpBits64(int len, ulong[] z, int zOff, int bits, ulong c) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits64(len, z.AsSpan(zOff, len), bits, c); +#else Debug.Assert(bits > 0 && bits < 64); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -2036,6 +2083,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -2069,6 +2117,9 @@ namespace Org.BouncyCastle.Math.Raw public static ulong ShiftUpBits64(int len, ulong[] x, int bits, ulong c, ulong[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits64(len, x.AsSpan(0, len), bits, c, z.AsSpan(0, len)); +#else Debug.Assert(bits > 0 && bits < 64); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -2092,10 +2143,14 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } public static ulong ShiftUpBits64(int len, ulong[] x, int xOff, int bits, ulong c, ulong[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + return ShiftUpBits64(len, x.AsSpan(xOff, len), bits, c, z.AsSpan(zOff, len)); +#else Debug.Assert(bits > 0 && bits < 64); int i = 0, limit4 = len - 4; while (i <= limit4) @@ -2119,6 +2174,7 @@ namespace Org.BouncyCastle.Math.Raw ++i; } return c >> -bits; +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER @@ -2642,104 +2698,164 @@ namespace Org.BouncyCastle.Math.Raw public static void Xor(int len, uint[] x, uint[] y, uint[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + Xor(len, x.AsSpan(0, len), y.AsSpan(0, len), z.AsSpan(0, len)); +#else for (int i = 0; i < len; ++i) { z[i] = x[i] ^ y[i]; } +#endif } public static void Xor(int len, uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + Xor(len, x.AsSpan(xOff, len), y.AsSpan(yOff, len), z.AsSpan(zOff, len)); +#else for (int i = 0; i < len; ++i) { z[zOff + i] = x[xOff + i] ^ y[yOff + i]; } +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER public static void Xor(int len, ReadOnlySpan<uint> x, ReadOnlySpan<uint> y, Span<uint> z) { - for (int i = 0; i < len; ++i) + int i = 0, limit16 = len - 16; + while (i <= limit16) + { + Nat512.Xor(x[i..], y[i..], z[i..]); + i += 16; + } + while (i < len) { z[i] = x[i] ^ y[i]; + ++i; } } #endif public static void Xor64(int len, ulong[] x, ulong[] y, ulong[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + Xor64(len, x.AsSpan(0, len), y.AsSpan(0, len), z.AsSpan(0, len)); +#else for (int i = 0; i < len; ++i) { z[i] = x[i] ^ y[i]; } +#endif } public static void Xor64(int len, ulong[] x, int xOff, ulong[] y, int yOff, ulong[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + Xor64(len, x.AsSpan(xOff, len), y.AsSpan(yOff, len), z.AsSpan(zOff, len)); +#else for (int i = 0; i < len; ++i) { z[zOff + i] = x[xOff + i] ^ y[yOff + i]; } +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER public static void Xor64(int len, ReadOnlySpan<ulong> x, ReadOnlySpan<ulong> y, Span<ulong> z) { - for (int i = 0; i < len; ++i) + int i = 0, limit8 = len - 8; + while (i <= limit8) + { + Nat512.Xor64(x[i..], y[i..], z[i..]); + i += 8; + } + while (i < len) { z[i] = x[i] ^ y[i]; + ++i; } } #endif public static void XorTo(int len, uint[] x, uint[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + XorTo(len, x.AsSpan(0, len), z.AsSpan(0, len)); +#else for (int i = 0; i < len; ++i) { z[i] ^= x[i]; } +#endif } public static void XorTo(int len, uint[] x, int xOff, uint[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + XorTo(len, x.AsSpan(xOff, len), z.AsSpan(zOff, len)); +#else for (int i = 0; i < len; ++i) { z[zOff + i] ^= x[xOff + i]; } +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER public static void XorTo(int len, ReadOnlySpan<uint> x, Span<uint> z) { - for (int i = 0; i < len; ++i) + int i = 0, limit16 = len - 16; + while (i <= limit16) + { + Nat512.XorTo(x[i..], z[i..]); + i += 16; + } + while (i < len) { z[i] ^= x[i]; + ++i; } } #endif public static void XorTo64(int len, ulong[] x, ulong[] z) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + XorTo64(len, x.AsSpan(0, len), z.AsSpan(0, len)); +#else for (int i = 0; i < len; ++i) { z[i] ^= x[i]; } +#endif } public static void XorTo64(int len, ulong[] x, int xOff, ulong[] z, int zOff) { +#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER + XorTo64(len, x.AsSpan(xOff, len), z.AsSpan(zOff, len)); +#else for (int i = 0; i < len; ++i) { z[zOff + i] ^= x[xOff + i]; } +#endif } #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER public static void XorTo64(int len, ReadOnlySpan<ulong> x, Span<ulong> z) { - for (int i = 0; i < len; ++i) + int i = 0, limit8 = len - 8; + while (i <= limit8) + { + Nat512.XorTo64(x[i..], z[i..]); + i += 8; + } + while (i < len) { z[i] ^= x[i]; + ++i; } } #endif |