diff options
| author | Peter Dettman <peter.dettman@bouncycastle.org> | 2015-03-23 19:05:36 +0700 |
|---|---|---|
| committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2015-03-23 19:05:36 +0700 |
| commit | 94bd14f0d17e617ca1a8b9c4b188416758820c78 (patch) | |
| tree | 103e2ecf5dc888408790700493cfac98634a6db1 /crypto/src/math | |
| parent | Improve handling of extensions for session resumption (diff) | |
| download | BouncyCastle.NET-ed25519-94bd14f0d17e617ca1a8b9c4b188416758820c78.tar.xz | |
Math.Raw support for custom binary curves
- Also migrate the 'raw' stuff into Math.Raw following Java build
Diffstat (limited to 'crypto/src/math')
42 files changed, 2365 insertions, 11 deletions
diff --git a/crypto/src/math/ec/ECFieldElement.cs b/crypto/src/math/ec/ECFieldElement.cs index 27c4ba2d0..844bed649 100644 --- a/crypto/src/math/ec/ECFieldElement.cs +++ b/crypto/src/math/ec/ECFieldElement.cs @@ -1,6 +1,7 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC diff --git a/crypto/src/math/ec/custom/djb/Curve25519.cs b/crypto/src/math/ec/custom/djb/Curve25519.cs index 712b68f29..6ed7c0648 100644 --- a/crypto/src/math/ec/custom/djb/Curve25519.cs +++ b/crypto/src/math/ec/custom/djb/Curve25519.cs @@ -1,6 +1,6 @@ using System; -using Org.BouncyCastle.Math.EC.Custom.Sec; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities.Encoders; namespace Org.BouncyCastle.Math.EC.Custom.Djb diff --git a/crypto/src/math/ec/custom/djb/Curve25519Field.cs b/crypto/src/math/ec/custom/djb/Curve25519Field.cs index 809e51b80..837821e1a 100644 --- a/crypto/src/math/ec/custom/djb/Curve25519Field.cs +++ b/crypto/src/math/ec/custom/djb/Curve25519Field.cs @@ -1,7 +1,7 @@ using System; using System.Diagnostics; -using Org.BouncyCastle.Math.EC.Custom.Sec; +using Org.BouncyCastle.Math.Raw; namespace Org.BouncyCastle.Math.EC.Custom.Djb { diff --git a/crypto/src/math/ec/custom/djb/Curve25519FieldElement.cs b/crypto/src/math/ec/custom/djb/Curve25519FieldElement.cs index 8d5a80326..732e9e468 100644 --- a/crypto/src/math/ec/custom/djb/Curve25519FieldElement.cs +++ b/crypto/src/math/ec/custom/djb/Curve25519FieldElement.cs @@ -1,6 +1,6 @@ using System; -using Org.BouncyCastle.Math.EC.Custom.Sec; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Djb diff --git a/crypto/src/math/ec/custom/djb/Curve25519Point.cs b/crypto/src/math/ec/custom/djb/Curve25519Point.cs index bfec1d11d..eb8fc12f2 100644 --- a/crypto/src/math/ec/custom/djb/Curve25519Point.cs +++ b/crypto/src/math/ec/custom/djb/Curve25519Point.cs @@ -1,6 +1,6 @@ using System; -using Org.BouncyCastle.Math.EC.Custom.Sec; +using Org.BouncyCastle.Math.Raw; namespace Org.BouncyCastle.Math.EC.Custom.Djb { diff --git a/crypto/src/math/ec/custom/sec/SecP192K1Field.cs b/crypto/src/math/ec/custom/sec/SecP192K1Field.cs index d5ca903d1..a00360360 100644 --- a/crypto/src/math/ec/custom/sec/SecP192K1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP192K1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP192K1Field diff --git a/crypto/src/math/ec/custom/sec/SecP192K1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP192K1FieldElement.cs index 78886dd8c..dce377035 100644 --- a/crypto/src/math/ec/custom/sec/SecP192K1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP192K1FieldElement.cs @@ -1,6 +1,7 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP192K1Point.cs b/crypto/src/math/ec/custom/sec/SecP192K1Point.cs index 648aca502..58eb09102 100644 --- a/crypto/src/math/ec/custom/sec/SecP192K1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP192K1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP192K1Point diff --git a/crypto/src/math/ec/custom/sec/SecP192R1Field.cs b/crypto/src/math/ec/custom/sec/SecP192R1Field.cs index 85e3a0394..096c2b51f 100644 --- a/crypto/src/math/ec/custom/sec/SecP192R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP192R1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP192R1Field diff --git a/crypto/src/math/ec/custom/sec/SecP192R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP192R1FieldElement.cs index 020c5cdbb..45bcb00f0 100644 --- a/crypto/src/math/ec/custom/sec/SecP192R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP192R1FieldElement.cs @@ -1,5 +1,6 @@ using System; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP192R1Point.cs b/crypto/src/math/ec/custom/sec/SecP192R1Point.cs index 797a8de35..3b53e341e 100644 --- a/crypto/src/math/ec/custom/sec/SecP192R1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP192R1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP192R1Point diff --git a/crypto/src/math/ec/custom/sec/SecP224K1Field.cs b/crypto/src/math/ec/custom/sec/SecP224K1Field.cs index a55810c6d..98cf777a5 100644 --- a/crypto/src/math/ec/custom/sec/SecP224K1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP224K1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP224K1Field diff --git a/crypto/src/math/ec/custom/sec/SecP224K1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP224K1FieldElement.cs index 72ff4b099..fec07436a 100644 --- a/crypto/src/math/ec/custom/sec/SecP224K1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP224K1FieldElement.cs @@ -1,6 +1,7 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP224K1Point.cs b/crypto/src/math/ec/custom/sec/SecP224K1Point.cs index 8cbd29699..98cb29274 100644 --- a/crypto/src/math/ec/custom/sec/SecP224K1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP224K1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP224K1Point diff --git a/crypto/src/math/ec/custom/sec/SecP224R1Field.cs b/crypto/src/math/ec/custom/sec/SecP224R1Field.cs index 559593c66..4f5c3bbda 100644 --- a/crypto/src/math/ec/custom/sec/SecP224R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP224R1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP224R1Field diff --git a/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs index 06f47cded..2b9a06564 100644 --- a/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs @@ -1,5 +1,6 @@ using System; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP224R1Point.cs b/crypto/src/math/ec/custom/sec/SecP224R1Point.cs index c3f4efb59..73c4f1948 100644 --- a/crypto/src/math/ec/custom/sec/SecP224R1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP224R1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP224R1Point diff --git a/crypto/src/math/ec/custom/sec/SecP256K1Field.cs b/crypto/src/math/ec/custom/sec/SecP256K1Field.cs index ba3a070a9..b0646e93f 100644 --- a/crypto/src/math/ec/custom/sec/SecP256K1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP256K1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP256K1Field diff --git a/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs index d9a039a4f..473113d0f 100644 --- a/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP256K1FieldElement.cs @@ -1,6 +1,7 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP256K1Point.cs b/crypto/src/math/ec/custom/sec/SecP256K1Point.cs index 3165682fa..072a0b969 100644 --- a/crypto/src/math/ec/custom/sec/SecP256K1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP256K1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP256K1Point diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Field.cs b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs index 9ed9dcd41..11594b2ba 100644 --- a/crypto/src/math/ec/custom/sec/SecP256R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP256R1Field diff --git a/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs index b22763cfa..d7838aead 100644 --- a/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs @@ -1,5 +1,6 @@ using System; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Point.cs b/crypto/src/math/ec/custom/sec/SecP256R1Point.cs index 1de4a0b4a..83320824d 100644 --- a/crypto/src/math/ec/custom/sec/SecP256R1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP256R1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP256R1Point diff --git a/crypto/src/math/ec/custom/sec/SecP384R1Field.cs b/crypto/src/math/ec/custom/sec/SecP384R1Field.cs index 508b01e3c..7820775ee 100644 --- a/crypto/src/math/ec/custom/sec/SecP384R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP384R1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP384R1Field diff --git a/crypto/src/math/ec/custom/sec/SecP384R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP384R1FieldElement.cs index 40086978d..18d48a57d 100644 --- a/crypto/src/math/ec/custom/sec/SecP384R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP384R1FieldElement.cs @@ -1,5 +1,6 @@ using System; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP384R1Point.cs b/crypto/src/math/ec/custom/sec/SecP384R1Point.cs index 68c601611..83159ce61 100644 --- a/crypto/src/math/ec/custom/sec/SecP384R1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP384R1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP384R1Point diff --git a/crypto/src/math/ec/custom/sec/SecP521R1Field.cs b/crypto/src/math/ec/custom/sec/SecP521R1Field.cs index 3568156d8..b7f8eb146 100644 --- a/crypto/src/math/ec/custom/sec/SecP521R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP521R1Field.cs @@ -1,6 +1,8 @@ using System; using System.Diagnostics; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP521R1Field diff --git a/crypto/src/math/ec/custom/sec/SecP521R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP521R1FieldElement.cs index 83a615928..6f02a7eb5 100644 --- a/crypto/src/math/ec/custom/sec/SecP521R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP521R1FieldElement.cs @@ -1,5 +1,6 @@ using System; +using Org.BouncyCastle.Math.Raw; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Math.EC.Custom.Sec diff --git a/crypto/src/math/ec/custom/sec/SecP521R1Point.cs b/crypto/src/math/ec/custom/sec/SecP521R1Point.cs index fb1996cfd..7ad97f76f 100644 --- a/crypto/src/math/ec/custom/sec/SecP521R1Point.cs +++ b/crypto/src/math/ec/custom/sec/SecP521R1Point.cs @@ -1,5 +1,7 @@ using System; +using Org.BouncyCastle.Math.Raw; + namespace Org.BouncyCastle.Math.EC.Custom.Sec { internal class SecP521R1Point diff --git a/crypto/src/math/raw/Interleave.cs b/crypto/src/math/raw/Interleave.cs new file mode 100644 index 000000000..9755c9d6f --- /dev/null +++ b/crypto/src/math/raw/Interleave.cs @@ -0,0 +1,70 @@ +using System; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Interleave + { + /* + * This expands 8 bit indices into 16 bit contents (high bit 14), by inserting 0s between bits. + * In a binary field, this operation is the same as squaring an 8 bit number. + */ + private static readonly ushort[] INTERLEAVE2_TABLE = new ushort[] + { + 0x0000, 0x0001, 0x0004, 0x0005, 0x0010, 0x0011, 0x0014, 0x0015, + 0x0040, 0x0041, 0x0044, 0x0045, 0x0050, 0x0051, 0x0054, 0x0055, + 0x0100, 0x0101, 0x0104, 0x0105, 0x0110, 0x0111, 0x0114, 0x0115, + 0x0140, 0x0141, 0x0144, 0x0145, 0x0150, 0x0151, 0x0154, 0x0155, + 0x0400, 0x0401, 0x0404, 0x0405, 0x0410, 0x0411, 0x0414, 0x0415, + 0x0440, 0x0441, 0x0444, 0x0445, 0x0450, 0x0451, 0x0454, 0x0455, + 0x0500, 0x0501, 0x0504, 0x0505, 0x0510, 0x0511, 0x0514, 0x0515, + 0x0540, 0x0541, 0x0544, 0x0545, 0x0550, 0x0551, 0x0554, 0x0555, + 0x1000, 0x1001, 0x1004, 0x1005, 0x1010, 0x1011, 0x1014, 0x1015, + 0x1040, 0x1041, 0x1044, 0x1045, 0x1050, 0x1051, 0x1054, 0x1055, + 0x1100, 0x1101, 0x1104, 0x1105, 0x1110, 0x1111, 0x1114, 0x1115, + 0x1140, 0x1141, 0x1144, 0x1145, 0x1150, 0x1151, 0x1154, 0x1155, + 0x1400, 0x1401, 0x1404, 0x1405, 0x1410, 0x1411, 0x1414, 0x1415, + 0x1440, 0x1441, 0x1444, 0x1445, 0x1450, 0x1451, 0x1454, 0x1455, + 0x1500, 0x1501, 0x1504, 0x1505, 0x1510, 0x1511, 0x1514, 0x1515, + 0x1540, 0x1541, 0x1544, 0x1545, 0x1550, 0x1551, 0x1554, 0x1555, + 0x4000, 0x4001, 0x4004, 0x4005, 0x4010, 0x4011, 0x4014, 0x4015, + 0x4040, 0x4041, 0x4044, 0x4045, 0x4050, 0x4051, 0x4054, 0x4055, + 0x4100, 0x4101, 0x4104, 0x4105, 0x4110, 0x4111, 0x4114, 0x4115, + 0x4140, 0x4141, 0x4144, 0x4145, 0x4150, 0x4151, 0x4154, 0x4155, + 0x4400, 0x4401, 0x4404, 0x4405, 0x4410, 0x4411, 0x4414, 0x4415, + 0x4440, 0x4441, 0x4444, 0x4445, 0x4450, 0x4451, 0x4454, 0x4455, + 0x4500, 0x4501, 0x4504, 0x4505, 0x4510, 0x4511, 0x4514, 0x4515, + 0x4540, 0x4541, 0x4544, 0x4545, 0x4550, 0x4551, 0x4554, 0x4555, + 0x5000, 0x5001, 0x5004, 0x5005, 0x5010, 0x5011, 0x5014, 0x5015, + 0x5040, 0x5041, 0x5044, 0x5045, 0x5050, 0x5051, 0x5054, 0x5055, + 0x5100, 0x5101, 0x5104, 0x5105, 0x5110, 0x5111, 0x5114, 0x5115, + 0x5140, 0x5141, 0x5144, 0x5145, 0x5150, 0x5151, 0x5154, 0x5155, + 0x5400, 0x5401, 0x5404, 0x5405, 0x5410, 0x5411, 0x5414, 0x5415, + 0x5440, 0x5441, 0x5444, 0x5445, 0x5450, 0x5451, 0x5454, 0x5455, + 0x5500, 0x5501, 0x5504, 0x5505, 0x5510, 0x5511, 0x5514, 0x5515, + 0x5540, 0x5541, 0x5544, 0x5545, 0x5550, 0x5551, 0x5554, 0x5555 + }; + + internal static uint Expand8to16(uint x) + { + return INTERLEAVE2_TABLE[x & 0xFF]; + } + + internal static uint Expand16to32(uint x) + { + return (uint)(INTERLEAVE2_TABLE[x & 0xFF] | INTERLEAVE2_TABLE[(x >> 8) & 0xFF] << 16); + } + + internal static ulong Expand32to64(uint x) + { + uint r00 = (uint)(INTERLEAVE2_TABLE[x & 0xFF] | INTERLEAVE2_TABLE[(x >> 8) & 0xFF] << 16); + uint r32 = (uint)(INTERLEAVE2_TABLE[(x >> 16) & 0xFF] | INTERLEAVE2_TABLE[x >> 24] << 16); + return (ulong)r32 << 32 | (ulong)r00; + } + + internal static void Expand64To128(ulong x, ulong[] z, int zOff) + { + z[zOff ] = Expand32to64((uint)x); + z[zOff + 1] = Expand32to64((uint)(x >> 32)); + } + } +} diff --git a/crypto/src/math/ec/Mod.cs b/crypto/src/math/raw/Mod.cs index 80534ca9f..63467e668 100644 --- a/crypto/src/math/ec/Mod.cs +++ b/crypto/src/math/raw/Mod.cs @@ -4,7 +4,7 @@ using System.Diagnostics; using Org.BouncyCastle.Crypto.Utilities; using Org.BouncyCastle.Utilities; -namespace Org.BouncyCastle.Math.EC +namespace Org.BouncyCastle.Math.Raw { internal abstract class Mod { diff --git a/crypto/src/math/ec/Nat.cs b/crypto/src/math/raw/Nat.cs index 17b632f26..1f9ab00ec 100644 --- a/crypto/src/math/ec/Nat.cs +++ b/crypto/src/math/raw/Nat.cs @@ -3,7 +3,7 @@ using System.Diagnostics; using Org.BouncyCastle.Crypto.Utilities; -namespace Org.BouncyCastle.Math.EC +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat { @@ -212,6 +212,11 @@ namespace Org.BouncyCastle.Math.EC return new uint[len]; } + public static ulong[] Create64(int len) + { + return new ulong[len]; + } + public static int Dec(int len, uint[] z) { for (int i = 0; i < len; ++i) @@ -666,6 +671,17 @@ namespace Org.BouncyCastle.Math.EC return c >> 31; } + public static ulong ShiftUpBit64(int len, ulong[] x, int xOff, ulong c, ulong[] z, int zOff) + { + for (int i = 0; i < len; ++i) + { + ulong next = x[xOff + i]; + z[zOff + i] = (next << 1) | (c >> 63); + c = next; + } + return c >> 63; + } + public static uint ShiftUpBits(int len, uint[] z, int bits, uint c) { Debug.Assert(bits > 0 && bits < 32); @@ -690,6 +706,18 @@ namespace Org.BouncyCastle.Math.EC return c >> -bits; } + public static ulong ShiftUpBits64(int len, ulong[] z, int zOff, int bits, ulong c) + { + Debug.Assert(bits > 0 && bits < 64); + for (int i = 0; i < len; ++i) + { + ulong next = z[zOff + i]; + z[zOff + i] = (next << bits) | (c >> -bits); + c = next; + } + return c >> -bits; + } + public static uint ShiftUpBits(int len, uint[] x, int bits, uint c, uint[] z) { Debug.Assert(bits > 0 && bits < 32); @@ -714,6 +742,18 @@ namespace Org.BouncyCastle.Math.EC return c >> -bits; } + public static ulong ShiftUpBits64(int len, ulong[] x, int xOff, int bits, ulong c, ulong[] z, int zOff) + { + Debug.Assert(bits > 0 && bits < 64); + for (int i = 0; i < len; ++i) + { + ulong next = x[xOff + i]; + z[zOff + i] = (next << bits) | (c >> -bits); + c = next; + } + return c >> -bits; + } + public static void Square(int len, uint[] x, uint[] zz) { int extLen = len << 1; diff --git a/crypto/src/math/raw/Nat128.cs b/crypto/src/math/raw/Nat128.cs new file mode 100644 index 000000000..819c52062 --- /dev/null +++ b/crypto/src/math/raw/Nat128.cs @@ -0,0 +1,856 @@ +using System; +using System.Diagnostics; + +using Org.BouncyCastle.Crypto.Utilities; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Nat128 + { + private const ulong M = 0xFFFFFFFFUL; + + public static uint Add(uint[] x, uint[] y, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + y[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + y[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + y[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + y[3]; + z[3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddBothTo(uint[] x, uint[] y, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + y[0] + z[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + y[1] + z[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + y[2] + z[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + y[3] + z[3]; + z[3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddTo(uint[] x, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + z[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + z[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + z[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + z[3]; + z[3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddTo(uint[] x, int xOff, uint[] z, int zOff, uint cIn) + { + ulong c = cIn; + c += (ulong)x[xOff + 0] + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 1] + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 2] + z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 3] + z[zOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddToEachOther(uint[] u, int uOff, uint[] v, int vOff) + { + ulong c = 0; + c += (ulong)u[uOff + 0] + v[vOff + 0]; + u[uOff + 0] = (uint)c; + v[vOff + 0] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 1] + v[vOff + 1]; + u[uOff + 1] = (uint)c; + v[vOff + 1] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 2] + v[vOff + 2]; + u[uOff + 2] = (uint)c; + v[vOff + 2] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 3] + v[vOff + 3]; + u[uOff + 3] = (uint)c; + v[vOff + 3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static void Copy(uint[] x, uint[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + } + + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + } + + public static uint[] Create() + { + return new uint[4]; + } + + public static ulong[] Create64() + { + return new ulong[2]; + } + + public static uint[] CreateExt() + { + return new uint[8]; + } + + public static ulong[] CreateExt64() + { + return new ulong[4]; + } + + public static bool Diff(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + bool pos = Gte(x, xOff, y, yOff); + if (pos) + { + Sub(x, xOff, y, yOff, z, zOff); + } + else + { + Sub(y, yOff, x, xOff, z, zOff); + } + return pos; + } + + public static bool Eq(uint[] x, uint[] y) + { + for (int i = 3; i >= 0; --i) + { + if (x[i] != y[i]) + return false; + } + return true; + } + + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 1; i >= 0; --i) + { + if (x[i] != y[i]) + return false; + } + return true; + } + + public static uint[] FromBigInteger(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 128) + throw new ArgumentException(); + + uint[] z = Create(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (uint)x.IntValue; + x = x.ShiftRight(32); + } + return z; + } + + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 128) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + + public static uint GetBit(uint[] x, int bit) + { + if (bit == 0) + { + return x[0] & 1; + } + if ((bit & 127) != bit) + { + return 0; + } + int w = bit >> 5; + int b = bit & 31; + return (x[w] >> b) & 1; + } + + public static bool Gte(uint[] x, uint[] y) + { + for (int i = 3; i >= 0; --i) + { + uint x_i = x[i], y_i = y[i]; + if (x_i < y_i) + return false; + if (x_i > y_i) + return true; + } + return true; + } + + public static bool Gte(uint[] x, int xOff, uint[] y, int yOff) + { + for (int i = 3; i >= 0; --i) + { + uint x_i = x[xOff + i], y_i = y[yOff + i]; + if (x_i < y_i) + return false; + if (x_i > y_i) + return true; + } + return true; + } + + public static bool IsOne(uint[] x) + { + if (x[0] != 1) + { + return false; + } + for (int i = 1; i < 4; ++i) + { + if (x[i] != 0) + { + return false; + } + } + return true; + } + + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 2; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static bool IsZero(uint[] x) + { + for (int i = 0; i < 4; ++i) + { + if (x[i] != 0) + { + return false; + } + } + return true; + } + + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 2; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static void Mul(uint[] x, uint[] y, uint[] zz) + { + ulong y_0 = y[0]; + ulong y_1 = y[1]; + ulong y_2 = y[2]; + ulong y_3 = y[3]; + + { + ulong c = 0, x_0 = x[0]; + c += x_0 * y_0; + zz[0] = (uint)c; + c >>= 32; + c += x_0 * y_1; + zz[1] = (uint)c; + c >>= 32; + c += x_0 * y_2; + zz[2] = (uint)c; + c >>= 32; + c += x_0 * y_3; + zz[3] = (uint)c; + c >>= 32; + zz[4] = (uint)c; + } + + for (int i = 1; i < 4; ++i) + { + ulong c = 0, x_i = x[i]; + c += x_i * y_0 + zz[i + 0]; + zz[i + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[i + 1]; + zz[i + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[i + 2]; + zz[i + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[i + 3]; + zz[i + 3] = (uint)c; + c >>= 32; + zz[i + 4] = (uint)c; + } + } + + public static void Mul(uint[] x, int xOff, uint[] y, int yOff, uint[] zz, int zzOff) + { + ulong y_0 = y[yOff + 0]; + ulong y_1 = y[yOff + 1]; + ulong y_2 = y[yOff + 2]; + ulong y_3 = y[yOff + 3]; + + { + ulong c = 0, x_0 = x[xOff + 0]; + c += x_0 * y_0; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_0 * y_1; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_0 * y_2; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_0 * y_3; + zz[zzOff + 3] = (uint)c; + c >>= 32; + zz[zzOff + 4] = (uint)c; + } + + for (int i = 1; i < 4; ++i) + { + ++zzOff; + ulong c = 0, x_i = x[xOff + i]; + c += x_i * y_0 + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + zz[zzOff + 4] = (uint)c; + } + } + + public static uint MulAddTo(uint[] x, uint[] y, uint[] zz) + { + ulong y_0 = y[0]; + ulong y_1 = y[1]; + ulong y_2 = y[2]; + ulong y_3 = y[3]; + + ulong zc = 0; + for (int i = 0; i < 4; ++i) + { + ulong c = 0, x_i = x[i]; + c += x_i * y_0 + zz[i + 0]; + zz[i + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[i + 1]; + zz[i + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[i + 2]; + zz[i + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[i + 3]; + zz[i + 3] = (uint)c; + c >>= 32; + c += zc + zz[i + 4]; + zz[i + 4] = (uint)c; + zc = c >> 32; + } + return (uint)zc; + } + + public static uint MulAddTo(uint[] x, int xOff, uint[] y, int yOff, uint[] zz, int zzOff) + { + ulong y_0 = y[yOff + 0]; + ulong y_1 = y[yOff + 1]; + ulong y_2 = y[yOff + 2]; + ulong y_3 = y[yOff + 3]; + + ulong zc = 0; + for (int i = 0; i < 4; ++i) + { + ulong c = 0, x_i = x[xOff + i]; + c += x_i * y_0 + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + c += zc + zz[zzOff + 4]; + zz[zzOff + 4] = (uint)c; + zc = c >> 32; + ++zzOff; + } + return (uint)zc; + } + + public static ulong Mul33Add(uint w, uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + Debug.Assert(w >> 31 == 0); + + ulong c = 0, wVal = w; + ulong x0 = x[xOff + 0]; + c += wVal * x0 + y[yOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + ulong x1 = x[xOff + 1]; + c += wVal * x1 + x0 + y[yOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + ulong x2 = x[xOff + 2]; + c += wVal * x2 + x1 + y[yOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + ulong x3 = x[xOff + 3]; + c += wVal * x3 + x2 + y[yOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + c += x3; + return c; + } + + public static uint MulWordAddExt(uint x, uint[] yy, int yyOff, uint[] zz, int zzOff) + { + Debug.Assert(yyOff <= 4); + Debug.Assert(zzOff <= 4); + + ulong c = 0, xVal = x; + c += xVal * yy[yyOff + 0] + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 1] + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 2] + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 3] + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint Mul33DWordAdd(uint x, ulong y, uint[] z, int zOff) + { + Debug.Assert(x >> 31 == 0); + Debug.Assert(zOff <= 0); + ulong c = 0, xVal = x; + ulong y00 = y & M; + c += xVal * y00 + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + ulong y01 = y >> 32; + c += xVal * y01 + y00 + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += y01 + z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += z[zOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint Mul33WordAdd(uint x, uint y, uint[] z, int zOff) + { + Debug.Assert(x >> 31 == 0); + Debug.Assert(zOff <= 1); + ulong c = 0, yVal = y; + c += yVal * x + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += yVal + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(4, z, zOff, 3); + } + + public static uint MulWordDwordAdd(uint x, ulong y, uint[] z, int zOff) + { + Debug.Assert(zOff <= 1); + ulong c = 0, xVal = x; + c += xVal * y + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += xVal * (y >> 32) + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(4, z, zOff, 3); + } + + public static uint MulWordsAdd(uint x, uint y, uint[] z, int zOff) + { + Debug.Assert(zOff <= 2); + + ulong c = 0, xVal = x, yVal = y; + c += yVal * xVal + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(4, z, zOff, 2); + } + + public static uint MulWord(uint x, uint[] y, uint[] z, int zOff) + { + ulong c = 0, xVal = x; + int i = 0; + do + { + c += xVal * y[i]; + z[zOff + i] = (uint)c; + c >>= 32; + } + while (++i < 4); + return (uint)c; + } + + public static void Square(uint[] x, uint[] zz) + { + ulong x_0 = x[0]; + ulong zz_1; + + uint c = 0, w; + { + int i = 3, j = 8; + do + { + ulong xVal = x[i--]; + ulong p = xVal * xVal; + zz[--j] = (c << 31) | (uint)(p >> 33); + zz[--j] = (uint)(p >> 1); + c = (uint)p; + } + while (i > 0); + + { + ulong p = x_0 * x_0; + zz_1 = (ulong)(c << 31) | (p >> 33); + zz[0] = (uint)p; + c = (uint)(p >> 32) & 1; + } + } + + ulong x_1 = x[1]; + ulong zz_2 = zz[2]; + + { + zz_1 += x_1 * x_0; + w = (uint)zz_1; + zz[1] = (w << 1) | c; + c = w >> 31; + zz_2 += zz_1 >> 32; + } + + ulong x_2 = x[2]; + ulong zz_3 = zz[3]; + ulong zz_4 = zz[4]; + { + zz_2 += x_2 * x_0; + w = (uint)zz_2; + zz[2] = (w << 1) | c; + c = w >> 31; + zz_3 += (zz_2 >> 32) + x_2 * x_1; + zz_4 += zz_3 >> 32; + zz_3 &= M; + } + + ulong x_3 = x[3]; + ulong zz_5 = zz[5]; + ulong zz_6 = zz[6]; + { + zz_3 += x_3 * x_0; + w = (uint)zz_3; + zz[3] = (w << 1) | c; + c = w >> 31; + zz_4 += (zz_3 >> 32) + x_3 * x_1; + zz_5 += (zz_4 >> 32) + x_3 * x_2; + zz_6 += zz_5 >> 32; + } + + w = (uint)zz_4; + zz[4] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_5; + zz[5] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_6; + zz[6] = (w << 1) | c; + c = w >> 31; + w = zz[7] + (uint)(zz_6 >> 32); + zz[7] = (w << 1) | c; + } + + public static void Square(uint[] x, int xOff, uint[] zz, int zzOff) + { + ulong x_0 = x[xOff + 0]; + ulong zz_1; + + uint c = 0, w; + { + int i = 3, j = 8; + do + { + ulong xVal = x[xOff + i--]; + ulong p = xVal * xVal; + zz[zzOff + --j] = (c << 31) | (uint)(p >> 33); + zz[zzOff + --j] = (uint)(p >> 1); + c = (uint)p; + } + while (i > 0); + + { + ulong p = x_0 * x_0; + zz_1 = (ulong)(c << 31) | (p >> 33); + zz[zzOff + 0] = (uint)p; + c = (uint)(p >> 32) & 1; + } + } + + ulong x_1 = x[xOff + 1]; + ulong zz_2 = zz[zzOff + 2]; + + { + zz_1 += x_1 * x_0; + w = (uint)zz_1; + zz[zzOff + 1] = (w << 1) | c; + c = w >> 31; + zz_2 += zz_1 >> 32; + } + + ulong x_2 = x[xOff + 2]; + ulong zz_3 = zz[zzOff + 3]; + ulong zz_4 = zz[zzOff + 4]; + { + zz_2 += x_2 * x_0; + w = (uint)zz_2; + zz[zzOff + 2] = (w << 1) | c; + c = w >> 31; + zz_3 += (zz_2 >> 32) + x_2 * x_1; + zz_4 += zz_3 >> 32; + zz_3 &= M; + } + + ulong x_3 = x[xOff + 3]; + ulong zz_5 = zz[zzOff + 5]; + ulong zz_6 = zz[zzOff + 6]; + { + zz_3 += x_3 * x_0; + w = (uint)zz_3; + zz[zzOff + 3] = (w << 1) | c; + c = w >> 31; + zz_4 += (zz_3 >> 32) + x_3 * x_1; + zz_5 += (zz_4 >> 32) + x_3 * x_2; + zz_6 += zz_5 >> 32; + } + + w = (uint)zz_4; + zz[zzOff + 4] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_5; + zz[zzOff + 5] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_6; + zz[zzOff + 6] = (w << 1) | c; + c = w >> 31; + w = zz[zzOff + 7] + (uint)(zz_6 >> 32); + zz[zzOff + 7] = (w << 1) | c; + } + + public static int Sub(uint[] x, uint[] y, uint[] z) + { + long c = 0; + c += (long)x[0] - y[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)x[1] - y[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)x[2] - y[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)x[3] - y[3]; + z[3] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int Sub(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + long c = 0; + c += (long)x[xOff + 0] - y[yOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (long)x[xOff + 1] - y[yOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (long)x[xOff + 2] - y[yOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (long)x[xOff + 3] - y[yOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubBothFrom(uint[] x, uint[] y, uint[] z) + { + long c = 0; + c += (long)z[0] - x[0] - y[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)z[1] - x[1] - y[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)z[2] - x[2] - y[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)z[3] - x[3] - y[3]; + z[3] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubFrom(uint[] x, uint[] z) + { + long c = 0; + c += (long)z[0] - x[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)z[1] - x[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)z[2] - x[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)z[3] - x[3]; + z[3] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubFrom(uint[] x, int xOff, uint[] z, int zOff) + { + long c = 0; + c += (long)z[zOff + 0] - x[xOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (long)z[zOff + 1] - x[xOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (long)z[zOff + 2] - x[xOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (long)z[zOff + 3] - x[xOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + return (int)c; + } + + public static BigInteger ToBigInteger(uint[] x) + { + byte[] bs = new byte[16]; + for (int i = 0; i < 4; ++i) + { + uint x_i = x[i]; + if (x_i != 0) + { + Pack.UInt32_To_BE(x_i, bs, (3 - i) << 2); + } + } + return new BigInteger(1, bs); + } + + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[16]; + for (int i = 0; i < 2; ++i) + { + ulong x_i = x[i]; + if (x_i != 0UL) + { + Pack.UInt64_To_BE(x_i, bs, (1 - i) << 3); + } + } + return new BigInteger(1, bs); + } + + public static void Zero(uint[] z) + { + z[0] = 0; + z[1] = 0; + z[2] = 0; + z[3] = 0; + } + } +} diff --git a/crypto/src/math/raw/Nat160.cs b/crypto/src/math/raw/Nat160.cs new file mode 100644 index 000000000..153ac0a43 --- /dev/null +++ b/crypto/src/math/raw/Nat160.cs @@ -0,0 +1,874 @@ +using System; +using System.Diagnostics; + +using Org.BouncyCastle.Crypto.Utilities; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Nat160 + { + private const ulong M = 0xFFFFFFFFUL; + + public static uint Add(uint[] x, uint[] y, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + y[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + y[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + y[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + y[3]; + z[3] = (uint)c; + c >>= 32; + c += (ulong)x[4] + y[4]; + z[4] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddBothTo(uint[] x, uint[] y, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + y[0] + z[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + y[1] + z[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + y[2] + z[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + y[3] + z[3]; + z[3] = (uint)c; + c >>= 32; + c += (ulong)x[4] + y[4] + z[4]; + z[4] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddTo(uint[] x, uint[] z) + { + ulong c = 0; + c += (ulong)x[0] + z[0]; + z[0] = (uint)c; + c >>= 32; + c += (ulong)x[1] + z[1]; + z[1] = (uint)c; + c >>= 32; + c += (ulong)x[2] + z[2]; + z[2] = (uint)c; + c >>= 32; + c += (ulong)x[3] + z[3]; + z[3] = (uint)c; + c >>= 32; + c += (ulong)x[4] + z[4]; + z[4] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint AddTo(uint[] x, int xOff, uint[] z, int zOff, uint cIn) + { + ulong c = cIn; + c += (ulong)x[xOff + 0] + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 1] + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 2] + z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 3] + z[zOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 4] + z[zOff + 4]; + z[zOff + 4] = (uint)c; + c >>= 32; + c += (ulong)x[xOff + 5] + z[zOff + 5]; + return (uint)c; + } + + public static uint AddToEachOther(uint[] u, int uOff, uint[] v, int vOff) + { + ulong c = 0; + c += (ulong)u[uOff + 0] + v[vOff + 0]; + u[uOff + 0] = (uint)c; + v[vOff + 0] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 1] + v[vOff + 1]; + u[uOff + 1] = (uint)c; + v[vOff + 1] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 2] + v[vOff + 2]; + u[uOff + 2] = (uint)c; + v[vOff + 2] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 3] + v[vOff + 3]; + u[uOff + 3] = (uint)c; + v[vOff + 3] = (uint)c; + c >>= 32; + c += (ulong)u[uOff + 4] + v[vOff + 4]; + u[uOff + 4] = (uint)c; + v[vOff + 4] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static void Copy(uint[] x, uint[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + z[4] = x[4]; + } + + public static uint[] Create() + { + return new uint[5]; + } + + public static uint[] CreateExt() + { + return new uint[10]; + } + + public static bool Diff(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + bool pos = Gte(x, xOff, y, yOff); + if (pos) + { + Sub(x, xOff, y, yOff, z, zOff); + } + else + { + Sub(y, yOff, x, xOff, z, zOff); + } + return pos; + } + + public static bool Eq(uint[] x, uint[] y) + { + for (int i = 4; i >= 0; --i) + { + if (x[i] != y[i]) + return false; + } + return true; + } + + public static uint[] FromBigInteger(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 160) + throw new ArgumentException(); + + uint[] z = Create(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (uint)x.IntValue; + x = x.ShiftRight(32); + } + return z; + } + + public static uint GetBit(uint[] x, int bit) + { + if (bit == 0) + { + return x[0] & 1; + } + int w = bit >> 5; + if (w < 0 || w >= 5) + { + return 0; + } + int b = bit & 31; + return (x[w] >> b) & 1; + } + + public static bool Gte(uint[] x, uint[] y) + { + for (int i = 4; i >= 0; --i) + { + uint x_i = x[i], y_i = y[i]; + if (x_i < y_i) + return false; + if (x_i > y_i) + return true; + } + return true; + } + + public static bool Gte(uint[] x, int xOff, uint[] y, int yOff) + { + for (int i = 4; i >= 0; --i) + { + uint x_i = x[xOff + i], y_i = y[yOff + i]; + if (x_i < y_i) + return false; + if (x_i > y_i) + return true; + } + return true; + } + + public static bool IsOne(uint[] x) + { + if (x[0] != 1) + { + return false; + } + for (int i = 1; i < 5; ++i) + { + if (x[i] != 0) + { + return false; + } + } + return true; + } + + public static bool IsZero(uint[] x) + { + for (int i = 0; i < 5; ++i) + { + if (x[i] != 0) + { + return false; + } + } + return true; + } + + public static void Mul(uint[] x, uint[] y, uint[] zz) + { + ulong y_0 = y[0]; + ulong y_1 = y[1]; + ulong y_2 = y[2]; + ulong y_3 = y[3]; + ulong y_4 = y[4]; + + { + ulong c = 0, x_0 = x[0]; + c += x_0 * y_0; + zz[0] = (uint)c; + c >>= 32; + c += x_0 * y_1; + zz[1] = (uint)c; + c >>= 32; + c += x_0 * y_2; + zz[2] = (uint)c; + c >>= 32; + c += x_0 * y_3; + zz[3] = (uint)c; + c >>= 32; + c += x_0 * y_4; + zz[4] = (uint)c; + c >>= 32; + zz[5] = (uint)c; + } + + for (int i = 1; i < 5; ++i) + { + ulong c = 0, x_i = x[i]; + c += x_i * y_0 + zz[i + 0]; + zz[i + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[i + 1]; + zz[i + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[i + 2]; + zz[i + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[i + 3]; + zz[i + 3] = (uint)c; + c >>= 32; + c += x_i * y_4 + zz[i + 4]; + zz[i + 4] = (uint)c; + c >>= 32; + zz[i + 5] = (uint)c; + } + } + + public static void Mul(uint[] x, int xOff, uint[] y, int yOff, uint[] zz, int zzOff) + { + ulong y_0 = y[yOff + 0]; + ulong y_1 = y[yOff + 1]; + ulong y_2 = y[yOff + 2]; + ulong y_3 = y[yOff + 3]; + ulong y_4 = y[yOff + 4]; + + { + ulong c = 0, x_0 = x[xOff + 0]; + c += x_0 * y_0; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_0 * y_1; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_0 * y_2; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_0 * y_3; + zz[zzOff + 3] = (uint)c; + c >>= 32; + c += x_0 * y_4; + zz[zzOff + 4] = (uint)c; + c >>= 32; + zz[zzOff + 5] = (uint)c; + } + + for (int i = 1; i < 5; ++i) + { + ++zzOff; + ulong c = 0, x_i = x[xOff + i]; + c += x_i * y_0 + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + c += x_i * y_4 + zz[zzOff + 4]; + zz[zzOff + 4] = (uint)c; + c >>= 32; + zz[zzOff + 5] = (uint)c; + } + } + + public static uint MulAddTo(uint[] x, uint[] y, uint[] zz) + { + ulong y_0 = y[0]; + ulong y_1 = y[1]; + ulong y_2 = y[2]; + ulong y_3 = y[3]; + ulong y_4 = y[4]; + + ulong zc = 0; + for (int i = 0; i < 5; ++i) + { + ulong c = 0, x_i = x[i]; + c += x_i * y_0 + zz[i + 0]; + zz[i + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[i + 1]; + zz[i + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[i + 2]; + zz[i + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[i + 3]; + zz[i + 3] = (uint)c; + c >>= 32; + c += x_i * y_4 + zz[i + 4]; + zz[i + 4] = (uint)c; + c >>= 32; + c += zc + zz[i + 5]; + zz[i + 5] = (uint)c; + zc = c >> 32; + } + return (uint)zc; + } + + public static uint MulAddTo(uint[] x, int xOff, uint[] y, int yOff, uint[] zz, int zzOff) + { + ulong y_0 = y[yOff + 0]; + ulong y_1 = y[yOff + 1]; + ulong y_2 = y[yOff + 2]; + ulong y_3 = y[yOff + 3]; + ulong y_4 = y[yOff + 4]; + + ulong zc = 0; + for (int i = 0; i < 5; ++i) + { + ulong c = 0, x_i = x[xOff + i]; + c += x_i * y_0 + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += x_i * y_1 + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += x_i * y_2 + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += x_i * y_3 + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + c += x_i * y_4 + zz[zzOff + 4]; + zz[zzOff + 4] = (uint)c; + c >>= 32; + c += zc + zz[zzOff + 5]; + zz[zzOff + 5] = (uint)c; + zc = c >> 32; + ++zzOff; + } + return (uint)zc; + } + + public static ulong Mul33Add(uint w, uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + Debug.Assert(w >> 31 == 0); + + ulong c = 0, wVal = w; + ulong x0 = x[xOff + 0]; + c += wVal * x0 + y[yOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + ulong x1 = x[xOff + 1]; + c += wVal * x1 + x0 + y[yOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + ulong x2 = x[xOff + 2]; + c += wVal * x2 + x1 + y[yOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + ulong x3 = x[xOff + 3]; + c += wVal * x3 + x2 + y[yOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + ulong x4 = x[xOff + 4]; + c += wVal * x4 + x3 + y[yOff + 4]; + z[zOff + 4] = (uint)c; + c >>= 32; + c += x4; + return c; + } + + public static uint MulWordAddExt(uint x, uint[] yy, int yyOff, uint[] zz, int zzOff) + { + Debug.Assert(yyOff <= 5); + Debug.Assert(zzOff <= 5); + + ulong c = 0, xVal = x; + c += xVal * yy[yyOff + 0] + zz[zzOff + 0]; + zz[zzOff + 0] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 1] + zz[zzOff + 1]; + zz[zzOff + 1] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 2] + zz[zzOff + 2]; + zz[zzOff + 2] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 3] + zz[zzOff + 3]; + zz[zzOff + 3] = (uint)c; + c >>= 32; + c += xVal * yy[yyOff + 4] + zz[zzOff + 4]; + zz[zzOff + 4] = (uint)c; + c >>= 32; + return (uint)c; + } + + public static uint Mul33DWordAdd(uint x, ulong y, uint[] z, int zOff) + { + Debug.Assert(x >> 31 == 0); + Debug.Assert(zOff <= 1); + ulong c = 0, xVal = x; + ulong y00 = y & M; + c += xVal * y00 + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + ulong y01 = y >> 32; + c += xVal * y01 + y00 + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += y01 + z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += z[zOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(5, z, zOff, 4); + } + + public static uint Mul33WordAdd(uint x, uint y, uint[] z, int zOff) + { + Debug.Assert(x >> 31 == 0); + Debug.Assert(zOff <= 2); + ulong c = 0, yVal = y; + c += yVal * x + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += yVal + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(5, z, zOff, 3); + } + + public static uint MulWordDwordAdd(uint x, ulong y, uint[] z, int zOff) + { + Debug.Assert(zOff <= 2); + ulong c = 0, xVal = x; + c += xVal * y + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += xVal * (y >> 32) + z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += z[zOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(5, z, zOff, 3); + } + + public static uint MulWordsAdd(uint x, uint y, uint[] z, int zOff) + { + Debug.Assert(zOff <= 3); + + ulong c = 0, xVal = x, yVal = y; + c += yVal * xVal + z[zOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += z[zOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + return c == 0 ? 0 : Nat.IncAt(5, z, zOff, 2); + } + + public static uint MulWord(uint x, uint[] y, uint[] z, int zOff) + { + ulong c = 0, xVal = x; + int i = 0; + do + { + c += xVal * y[i]; + z[zOff + i] = (uint)c; + c >>= 32; + } + while (++i < 5); + return (uint)c; + } + + public static void Square(uint[] x, uint[] zz) + { + ulong x_0 = x[0]; + ulong zz_1; + + uint c = 0, w; + { + int i = 4, j = 10; + do + { + ulong xVal = x[i--]; + ulong p = xVal * xVal; + zz[--j] = (c << 31) | (uint)(p >> 33); + zz[--j] = (uint)(p >> 1); + c = (uint)p; + } + while (i > 0); + + { + ulong p = x_0 * x_0; + zz_1 = (ulong)(c << 31) | (p >> 33); + zz[0] = (uint)p; + c = (uint)(p >> 32) & 1; + } + } + + ulong x_1 = x[1]; + ulong zz_2 = zz[2]; + + { + zz_1 += x_1 * x_0; + w = (uint)zz_1; + zz[1] = (w << 1) | c; + c = w >> 31; + zz_2 += zz_1 >> 32; + } + + ulong x_2 = x[2]; + ulong zz_3 = zz[3]; + ulong zz_4 = zz[4]; + { + zz_2 += x_2 * x_0; + w = (uint)zz_2; + zz[2] = (w << 1) | c; + c = w >> 31; + zz_3 += (zz_2 >> 32) + x_2 * x_1; + zz_4 += zz_3 >> 32; + zz_3 &= M; + } + + ulong x_3 = x[3]; + ulong zz_5 = zz[5]; + ulong zz_6 = zz[6]; + { + zz_3 += x_3 * x_0; + w = (uint)zz_3; + zz[3] = (w << 1) | c; + c = w >> 31; + zz_4 += (zz_3 >> 32) + x_3 * x_1; + zz_5 += (zz_4 >> 32) + x_3 * x_2; + zz_4 &= M; + zz_6 += zz_5 >> 32; + zz_5 &= M; + } + + ulong x_4 = x[4]; + ulong zz_7 = zz[7]; + ulong zz_8 = zz[8]; + { + zz_4 += x_4 * x_0; + w = (uint)zz_4; + zz[4] = (w << 1) | c; + c = w >> 31; + zz_5 += (zz_4 >> 32) + x_4 * x_1; + zz_6 += (zz_5 >> 32) + x_4 * x_2; + zz_7 += (zz_6 >> 32) + x_4 * x_3; + zz_8 += zz_7 >> 32; + } + + w = (uint)zz_5; + zz[5] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_6; + zz[6] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_7; + zz[7] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_8; + zz[8] = (w << 1) | c; + c = w >> 31; + w = zz[9] + (uint)(zz_8 >> 32); + zz[9] = (w << 1) | c; + } + + public static void Square(uint[] x, int xOff, uint[] zz, int zzOff) + { + ulong x_0 = x[xOff + 0]; + ulong zz_1; + + uint c = 0, w; + { + int i = 4, j = 10; + do + { + ulong xVal = x[xOff + i--]; + ulong p = xVal * xVal; + zz[zzOff + --j] = (c << 31) | (uint)(p >> 33); + zz[zzOff + --j] = (uint)(p >> 1); + c = (uint)p; + } + while (i > 0); + + { + ulong p = x_0 * x_0; + zz_1 = (ulong)(c << 31) | (p >> 33); + zz[zzOff + 0] = (uint)p; + c = (uint)(p >> 32) & 1; + } + } + + ulong x_1 = x[xOff + 1]; + ulong zz_2 = zz[zzOff + 2]; + + { + zz_1 += x_1 * x_0; + w = (uint)zz_1; + zz[zzOff + 1] = (w << 1) | c; + c = w >> 31; + zz_2 += zz_1 >> 32; + } + + ulong x_2 = x[xOff + 2]; + ulong zz_3 = zz[zzOff + 3]; + ulong zz_4 = zz[zzOff + 4]; + { + zz_2 += x_2 * x_0; + w = (uint)zz_2; + zz[zzOff + 2] = (w << 1) | c; + c = w >> 31; + zz_3 += (zz_2 >> 32) + x_2 * x_1; + zz_4 += zz_3 >> 32; + zz_3 &= M; + } + + ulong x_3 = x[xOff + 3]; + ulong zz_5 = zz[zzOff + 5]; + ulong zz_6 = zz[zzOff + 6]; + { + zz_3 += x_3 * x_0; + w = (uint)zz_3; + zz[zzOff + 3] = (w << 1) | c; + c = w >> 31; + zz_4 += (zz_3 >> 32) + x_3 * x_1; + zz_5 += (zz_4 >> 32) + x_3 * x_2; + zz_4 &= M; + zz_6 += zz_5 >> 32; + zz_5 &= M; + } + + ulong x_4 = x[xOff + 4]; + ulong zz_7 = zz[zzOff + 7]; + ulong zz_8 = zz[zzOff + 8]; + { + zz_4 += x_4 * x_0; + w = (uint)zz_4; + zz[zzOff + 4] = (w << 1) | c; + c = w >> 31; + zz_5 += (zz_4 >> 32) + x_4 * x_1; + zz_6 += (zz_5 >> 32) + x_4 * x_2; + zz_7 += (zz_6 >> 32) + x_4 * x_3; + zz_8 += zz_7 >> 32; + } + + w = (uint)zz_5; + zz[zzOff + 5] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_6; + zz[zzOff + 6] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_7; + zz[zzOff + 7] = (w << 1) | c; + c = w >> 31; + w = (uint)zz_8; + zz[zzOff + 8] = (w << 1) | c; + c = w >> 31; + w = zz[zzOff + 9] + (uint)(zz_8 >> 32); + zz[zzOff + 9] = (w << 1) | c; + } + + public static int Sub(uint[] x, uint[] y, uint[] z) + { + long c = 0; + c += (long)x[0] - y[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)x[1] - y[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)x[2] - y[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)x[3] - y[3]; + z[3] = (uint)c; + c >>= 32; + c += (long)x[4] - y[4]; + z[4] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int Sub(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) + { + long c = 0; + c += (long)x[xOff + 0] - y[yOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (long)x[xOff + 1] - y[yOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (long)x[xOff + 2] - y[yOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (long)x[xOff + 3] - y[yOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + c += (long)x[xOff + 4] - y[yOff + 4]; + z[zOff + 4] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubBothFrom(uint[] x, uint[] y, uint[] z) + { + long c = 0; + c += (long)z[0] - x[0] - y[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)z[1] - x[1] - y[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)z[2] - x[2] - y[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)z[3] - x[3] - y[3]; + z[3] = (uint)c; + c >>= 32; + c += (long)z[4] - x[4] - y[4]; + z[4] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubFrom(uint[] x, uint[] z) + { + long c = 0; + c += (long)z[0] - x[0]; + z[0] = (uint)c; + c >>= 32; + c += (long)z[1] - x[1]; + z[1] = (uint)c; + c >>= 32; + c += (long)z[2] - x[2]; + z[2] = (uint)c; + c >>= 32; + c += (long)z[3] - x[3]; + z[3] = (uint)c; + c >>= 32; + c += (long)z[4] - x[4]; + z[4] = (uint)c; + c >>= 32; + return (int)c; + } + + public static int SubFrom(uint[] x, int xOff, uint[] z, int zOff) + { + long c = 0; + c += (long)z[zOff + 0] - x[xOff + 0]; + z[zOff + 0] = (uint)c; + c >>= 32; + c += (long)z[zOff + 1] - x[xOff + 1]; + z[zOff + 1] = (uint)c; + c >>= 32; + c += (long)z[zOff + 2] - x[xOff + 2]; + z[zOff + 2] = (uint)c; + c >>= 32; + c += (long)z[zOff + 3] - x[xOff + 3]; + z[zOff + 3] = (uint)c; + c >>= 32; + c += (long)z[zOff + 4] - x[xOff + 4]; + z[zOff + 4] = (uint)c; + c >>= 32; + return (int)c; + } + + public static BigInteger ToBigInteger(uint[] x) + { + byte[] bs = new byte[20]; + for (int i = 0; i < 5; ++i) + { + uint x_i = x[i]; + if (x_i != 0) + { + Pack.UInt32_To_BE(x_i, bs, (4 - i) << 2); + } + } + return new BigInteger(1, bs); + } + + public static void Zero(uint[] z) + { + z[0] = 0; + z[1] = 0; + z[2] = 0; + z[3] = 0; + z[4] = 0; + } + } +} diff --git a/crypto/src/math/ec/custom/sec/Nat192.cs b/crypto/src/math/raw/Nat192.cs index 94d7ed17c..4797609ee 100644 --- a/crypto/src/math/ec/custom/sec/Nat192.cs +++ b/crypto/src/math/raw/Nat192.cs @@ -3,7 +3,7 @@ using System.Diagnostics; using Org.BouncyCastle.Crypto.Utilities; -namespace Org.BouncyCastle.Math.EC.Custom.Sec +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat192 { @@ -145,16 +145,33 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec z[5] = x[5]; } + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + } + public static uint[] Create() { return new uint[6]; } + public static ulong[] Create64() + { + return new ulong[3]; + } + public static uint[] CreateExt() { return new uint[12]; } + public static ulong[] CreateExt64() + { + return new ulong[6]; + } + public static bool Diff(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) { bool pos = Gte(x, xOff, y, yOff); @@ -179,6 +196,18 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 2; i >= 0; --i) + { + if (x[i] != y[i]) + { + return false; + } + } + return true; + } + public static uint[] FromBigInteger(BigInteger x) { if (x.SignValue < 0 || x.BitLength > 192) @@ -194,6 +223,21 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return z; } + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 192) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + public static uint GetBit(uint[] x, int bit) { if (bit == 0) @@ -251,6 +295,22 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 3; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + public static bool IsZero(uint[] x) { for (int i = 0; i < 6; ++i) @@ -263,6 +323,18 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 3; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + public static void Mul(uint[] x, uint[] y, uint[] zz) { ulong y_0 = y[0]; @@ -949,6 +1021,20 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return new BigInteger(1, bs); } + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[24]; + for (int i = 0; i < 3; ++i) + { + ulong x_i = x[i]; + if (x_i != 0L) + { + Pack.UInt64_To_BE(x_i, bs, (2 - i) << 3); + } + } + return new BigInteger(1, bs); + } + public static void Zero(uint[] z) { z[0] = 0; diff --git a/crypto/src/math/ec/custom/sec/Nat224.cs b/crypto/src/math/raw/Nat224.cs index d5b916a54..940e930ac 100644 --- a/crypto/src/math/ec/custom/sec/Nat224.cs +++ b/crypto/src/math/raw/Nat224.cs @@ -3,7 +3,7 @@ using System.Diagnostics; using Org.BouncyCastle.Crypto.Utilities; -namespace Org.BouncyCastle.Math.EC.Custom.Sec +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat224 { diff --git a/crypto/src/math/ec/custom/sec/Nat256.cs b/crypto/src/math/raw/Nat256.cs index bd2d6da47..19455031a 100644 --- a/crypto/src/math/ec/custom/sec/Nat256.cs +++ b/crypto/src/math/raw/Nat256.cs @@ -3,7 +3,7 @@ using System.Diagnostics; using Org.BouncyCastle.Crypto.Utilities; -namespace Org.BouncyCastle.Math.EC.Custom.Sec +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat256 { @@ -239,16 +239,34 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec z[7] = x[7]; } + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + } + public static uint[] Create() { return new uint[8]; } + public static ulong[] Create64() + { + return new ulong[4]; + } + public static uint[] CreateExt() { return new uint[16]; } + public static ulong[] CreateExt64() + { + return new ulong[8]; + } + public static bool Diff(uint[] x, int xOff, uint[] y, int yOff, uint[] z, int zOff) { bool pos = Gte(x, xOff, y, yOff); @@ -273,6 +291,18 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 3; i >= 0; --i) + { + if (x[i] != y[i]) + { + return false; + } + } + return true; + } + public static uint[] FromBigInteger(BigInteger x) { if (x.SignValue < 0 || x.BitLength > 256) @@ -288,6 +318,21 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return z; } + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 256) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + public static uint GetBit(uint[] x, int bit) { if (bit == 0) @@ -345,6 +390,22 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 4; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + public static bool IsZero(uint[] x) { for (int i = 0; i < 8; ++i) @@ -357,6 +418,18 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return true; } + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 4; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + public static void Mul(uint[] x, uint[] y, uint[] zz) { ulong y_0 = y[0]; @@ -1285,6 +1358,20 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return new BigInteger(1, bs); } + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[32]; + for (int i = 0; i < 4; ++i) + { + ulong x_i = x[i]; + if (x_i != 0L) + { + Pack.UInt64_To_BE(x_i, bs, (3 - i) << 3); + } + } + return new BigInteger(1, bs); + } + public static void Zero(uint[] z) { z[0] = 0; diff --git a/crypto/src/math/raw/Nat320.cs b/crypto/src/math/raw/Nat320.cs new file mode 100644 index 000000000..c7daa71e2 --- /dev/null +++ b/crypto/src/math/raw/Nat320.cs @@ -0,0 +1,98 @@ +using System; +using System.Diagnostics; + +using Org.BouncyCastle.Crypto.Utilities; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Nat320 + { + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + z[4] = x[4]; + } + + public static ulong[] Create64() + { + return new ulong[5]; + } + + public static ulong[] CreateExt64() + { + return new ulong[10]; + } + + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 4; i >= 0; --i) + { + if (x[i] != y[i]) + { + return false; + } + } + return true; + } + + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 320) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 5; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 5; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[40]; + for (int i = 0; i < 5; ++i) + { + ulong x_i = x[i]; + if (x_i != 0L) + { + Pack.UInt64_To_BE(x_i, bs, (4 - i) << 3); + } + } + return new BigInteger(1, bs); + } + } +} diff --git a/crypto/src/math/ec/custom/sec/Nat384.cs b/crypto/src/math/raw/Nat384.cs index dd93e68b6..ed1c47e8c 100644 --- a/crypto/src/math/ec/custom/sec/Nat384.cs +++ b/crypto/src/math/raw/Nat384.cs @@ -1,7 +1,7 @@ using System; using System.Diagnostics; -namespace Org.BouncyCastle.Math.EC.Custom.Sec +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat384 { diff --git a/crypto/src/math/raw/Nat448.cs b/crypto/src/math/raw/Nat448.cs new file mode 100644 index 000000000..52a253f1b --- /dev/null +++ b/crypto/src/math/raw/Nat448.cs @@ -0,0 +1,100 @@ +using System; +using System.Diagnostics; + +using Org.BouncyCastle.Crypto.Utilities; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Nat448 + { + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + z[4] = x[4]; + z[5] = x[5]; + z[6] = x[6]; + } + + public static ulong[] Create64() + { + return new ulong[7]; + } + + public static ulong[] CreateExt64() + { + return new ulong[14]; + } + + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 6; i >= 0; --i) + { + if (x[i] != y[i]) + { + return false; + } + } + return true; + } + + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 448) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 7; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 7; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[56]; + for (int i = 0; i < 7; ++i) + { + ulong x_i = x[i]; + if (x_i != 0L) + { + Pack.UInt64_To_BE(x_i, bs, (6 - i) << 3); + } + } + return new BigInteger(1, bs); + } + } +} diff --git a/crypto/src/math/ec/custom/sec/Nat512.cs b/crypto/src/math/raw/Nat512.cs index 46e10f995..a9ef2b3b6 100644 --- a/crypto/src/math/ec/custom/sec/Nat512.cs +++ b/crypto/src/math/raw/Nat512.cs @@ -1,7 +1,7 @@ using System; using System.Diagnostics; -namespace Org.BouncyCastle.Math.EC.Custom.Sec +namespace Org.BouncyCastle.Math.Raw { internal abstract class Nat512 { diff --git a/crypto/src/math/raw/Nat576.cs b/crypto/src/math/raw/Nat576.cs new file mode 100644 index 000000000..813fb86be --- /dev/null +++ b/crypto/src/math/raw/Nat576.cs @@ -0,0 +1,102 @@ +using System; +using System.Diagnostics; + +using Org.BouncyCastle.Crypto.Utilities; + +namespace Org.BouncyCastle.Math.Raw +{ + internal abstract class Nat576 + { + public static void Copy64(ulong[] x, ulong[] z) + { + z[0] = x[0]; + z[1] = x[1]; + z[2] = x[2]; + z[3] = x[3]; + z[4] = x[4]; + z[5] = x[5]; + z[6] = x[6]; + z[7] = x[7]; + z[8] = x[8]; + } + + public static ulong[] Create64() + { + return new ulong[9]; + } + + public static ulong[] CreateExt64() + { + return new ulong[18]; + } + + public static bool Eq64(ulong[] x, ulong[] y) + { + for (int i = 8; i >= 0; --i) + { + if (x[i] != y[i]) + { + return false; + } + } + return true; + } + + public static ulong[] FromBigInteger64(BigInteger x) + { + if (x.SignValue < 0 || x.BitLength > 576) + throw new ArgumentException(); + + ulong[] z = Create64(); + int i = 0; + while (x.SignValue != 0) + { + z[i++] = (ulong)x.LongValue; + x = x.ShiftRight(64); + } + return z; + } + + public static bool IsOne64(ulong[] x) + { + if (x[0] != 1UL) + { + return false; + } + for (int i = 1; i < 9; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static bool IsZero64(ulong[] x) + { + for (int i = 0; i < 9; ++i) + { + if (x[i] != 0UL) + { + return false; + } + } + return true; + } + + public static BigInteger ToBigInteger64(ulong[] x) + { + byte[] bs = new byte[72]; + for (int i = 0; i < 9; ++i) + { + ulong x_i = x[i]; + if (x_i != 0L) + { + Pack.UInt64_To_BE(x_i, bs, (8 - i) << 3); + } + } + return new BigInteger(1, bs); + } + } +} |