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Diffstat (limited to 'core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192R1Field.java')
-rw-r--r--core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192R1Field.java286
1 files changed, 0 insertions, 286 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192R1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192R1Field.java
deleted file mode 100644
index c8f5eed5..00000000
--- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192R1Field.java
+++ /dev/null
@@ -1,286 +0,0 @@
-package org.bouncycastle.math.ec.custom.sec;
-
-import java.math.BigInteger;
-
-import org.bouncycastle.math.raw.Nat;
-import org.bouncycastle.math.raw.Nat192;
-
-public class SecP192R1Field
-{
- private static final long M = 0xFFFFFFFFL;
-
- // 2^192 - 2^64 - 1
- static final int[] P = new int[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
- static final int[] PExt = new int[]{ 0x00000001, 0x00000000, 0x00000002, 0x00000000, 0x00000001,
- 0x00000000, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
- private static final int[] PExtInv = new int[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFE,
- 0xFFFFFFFF, 0x00000001, 0x00000000, 0x00000002 };
- private static final int P5 = 0xFFFFFFFF;
- private static final int PExt11 = 0xFFFFFFFF;
-
- public static void add(int[] x, int[] y, int[] z)
- {
- int c = Nat192.add(x, y, z);
- if (c != 0 || (z[5] == P5 && Nat192.gte(z, P)))
- {
- addPInvTo(z);
- }
- }
-
- public static void addExt(int[] xx, int[] yy, int[] zz)
- {
- int c = Nat.add(12, xx, yy, zz);
- if (c != 0 || (zz[11] == PExt11 && Nat.gte(12, zz, PExt)))
- {
- if (Nat.addTo(PExtInv.length, PExtInv, zz) != 0)
- {
- Nat.incAt(12, zz, PExtInv.length);
- }
- }
- }
-
- public static void addOne(int[] x, int[] z)
- {
- int c = Nat.inc(6, x, z);
- if (c != 0 || (z[5] == P5 && Nat192.gte(z, P)))
- {
- addPInvTo(z);
- }
- }
-
- public static int[] fromBigInteger(BigInteger x)
- {
- int[] z = Nat192.fromBigInteger(x);
- if (z[5] == P5 && Nat192.gte(z, P))
- {
- Nat192.subFrom(P, z);
- }
- return z;
- }
-
- public static void half(int[] x, int[] z)
- {
- if ((x[0] & 1) == 0)
- {
- Nat.shiftDownBit(6, x, 0, z);
- }
- else
- {
- int c = Nat192.add(x, P, z);
- Nat.shiftDownBit(6, z, c);
- }
- }
-
- public static void multiply(int[] x, int[] y, int[] z)
- {
- int[] tt = Nat192.createExt();
- Nat192.mul(x, y, tt);
- reduce(tt, z);
- }
-
- public static void multiplyAddToExt(int[] x, int[] y, int[] zz)
- {
- int c = Nat192.mulAddTo(x, y, zz);
- if (c != 0 || (zz[11] == PExt11 && Nat.gte(12, zz, PExt)))
- {
- if (Nat.addTo(PExtInv.length, PExtInv, zz) != 0)
- {
- Nat.incAt(12, zz, PExtInv.length);
- }
- }
- }
-
- public static void negate(int[] x, int[] z)
- {
- if (Nat192.isZero(x))
- {
- Nat192.zero(z);
- }
- else
- {
- Nat192.sub(P, x, z);
- }
- }
-
- public static void reduce(int[] xx, int[] z)
- {
- long xx06 = xx[6] & M, xx07 = xx[7] & M, xx08 = xx[8] & M;
- long xx09 = xx[9] & M, xx10 = xx[10] & M, xx11 = xx[11] & M;
-
- long t0 = xx06 + xx10;
- long t1 = xx07 + xx11;
-
- long cc = 0;
- cc += (xx[0] & M) + t0;
- int z0 = (int)cc;
- cc >>= 32;
- cc += (xx[1] & M) + t1;
- z[1] = (int)cc;
- cc >>= 32;
-
- t0 += xx08;
- t1 += xx09;
-
- cc += (xx[2] & M) + t0;
- long z2 = cc & M;
- cc >>= 32;
- cc += (xx[3] & M) + t1;
- z[3] = (int)cc;
- cc >>= 32;
-
- t0 -= xx06;
- t1 -= xx07;
-
- cc += (xx[4] & M) + t0;
- z[4] = (int)cc;
- cc >>= 32;
- cc += (xx[5] & M) + t1;
- z[5] = (int)cc;
- cc >>= 32;
-
- z2 += cc;
-
- cc += (z0 & M);
- z[0] = (int)cc;
- cc >>= 32;
- if (cc != 0)
- {
- cc += (z[1] & M);
- z[1] = (int)cc;
- z2 += cc >> 32;
- }
- z[2] = (int)z2;
- cc = z2 >> 32;
-
-// assert cc == 0 || cc == 1;
-
- if ((cc != 0 && Nat.incAt(6, z, 3) != 0)
- || (z[5] == P5 && Nat192.gte(z, P)))
- {
- addPInvTo(z);
- }
- }
-
- public static void reduce32(int x, int[] z)
- {
- long cc = 0;
-
- if (x != 0)
- {
- long xx06 = x & M;
-
- cc += (z[0] & M) + xx06;
- z[0] = (int)cc;
- cc >>= 32;
- if (cc != 0)
- {
- cc += (z[1] & M);
- z[1] = (int)cc;
- cc >>= 32;
- }
- cc += (z[2] & M) + xx06;
- z[2] = (int)cc;
- cc >>= 32;
-
-// assert cc == 0 || cc == 1;
- }
-
- if ((cc != 0 && Nat.incAt(6, z, 3) != 0)
- || (z[5] == P5 && Nat192.gte(z, P)))
- {
- addPInvTo(z);
- }
- }
-
- public static void square(int[] x, int[] z)
- {
- int[] tt = Nat192.createExt();
- Nat192.square(x, tt);
- reduce(tt, z);
- }
-
- public static void squareN(int[] x, int n, int[] z)
- {
-// assert n > 0;
-
- int[] tt = Nat192.createExt();
- Nat192.square(x, tt);
- reduce(tt, z);
-
- while (--n > 0)
- {
- Nat192.square(z, tt);
- reduce(tt, z);
- }
- }
-
- public static void subtract(int[] x, int[] y, int[] z)
- {
- int c = Nat192.sub(x, y, z);
- if (c != 0)
- {
- subPInvFrom(z);
- }
- }
-
- public static void subtractExt(int[] xx, int[] yy, int[] zz)
- {
- int c = Nat.sub(12, xx, yy, zz);
- if (c != 0)
- {
- if (Nat.subFrom(PExtInv.length, PExtInv, zz) != 0)
- {
- Nat.decAt(12, zz, PExtInv.length);
- }
- }
- }
-
- public static void twice(int[] x, int[] z)
- {
- int c = Nat.shiftUpBit(6, x, 0, z);
- if (c != 0 || (z[5] == P5 && Nat192.gte(z, P)))
- {
- addPInvTo(z);
- }
- }
-
- private static void addPInvTo(int[] z)
- {
- long c = (z[0] & M) + 1;
- z[0] = (int)c;
- c >>= 32;
- if (c != 0)
- {
- c += (z[1] & M);
- z[1] = (int)c;
- c >>= 32;
- }
- c += (z[2] & M) + 1;
- z[2] = (int)c;
- c >>= 32;
- if (c != 0)
- {
- Nat.incAt(6, z, 3);
- }
- }
-
- private static void subPInvFrom(int[] z)
- {
- long c = (z[0] & M) - 1;
- z[0] = (int)c;
- c >>= 32;
- if (c != 0)
- {
- c += (z[1] & M);
- z[1] = (int)c;
- c >>= 32;
- }
- c += (z[2] & M) - 1;
- z[2] = (int)c;
- c >>= 32;
- if (c != 0)
- {
- Nat.decAt(6, z, 3);
- }
- }
-}
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