Welcome to mirror list, hosted at ThFree Co, Russian Federation.

gitlab.com/quite/humla-spongycastle.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192K1Field.java')
-rw-r--r--core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192K1Field.java177
1 files changed, 0 insertions, 177 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192K1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192K1Field.java
deleted file mode 100644
index 1a0bde81..00000000
--- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP192K1Field.java
+++ /dev/null
@@ -1,177 +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 SecP192K1Field
-{
- // 2^192 - 2^32 - 2^12 - 2^8 - 2^7 - 2^6 - 2^3 - 1
- static final int[] P = new int[]{ 0xFFFFEE37, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
- static final int[] PExt = new int[]{ 0x013C4FD1, 0x00002392, 0x00000001, 0x00000000, 0x00000000,
- 0x00000000, 0xFFFFDC6E, 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
- private static final int[] PExtInv = new int[]{ 0xFEC3B02F, 0xFFFFDC6D, 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFF,
- 0xFFFFFFFF, 0x00002391, 0x00000002 };
- private static final int P5 = 0xFFFFFFFF;
- private static final int PExt11 = 0xFFFFFFFF;
- private static final int PInv33 = 0x11C9;
-
- 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)))
- {
- Nat.add33To(6, PInv33, 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)))
- {
- Nat.add33To(6, PInv33, 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 cc = Nat192.mul33Add(PInv33, xx, 6, xx, 0, z, 0);
- int c = Nat192.mul33DWordAdd(PInv33, cc, z, 0);
-
- // assert c == 0L || c == 1L;
-
- if (c != 0 || (z[5] == P5 && Nat192.gte(z, P)))
- {
- Nat.add33To(6, PInv33, z);
- }
- }
-
- public static void reduce32(int x, int[] z)
- {
- if ((x != 0 && Nat192.mul33WordAdd(PInv33, x, z, 0) != 0)
- || (z[5] == P5 && Nat192.gte(z, P)))
- {
- Nat.add33To(6, PInv33, 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)
- {
- Nat.sub33From(6, PInv33, 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)))
- {
- Nat.add33To(6, PInv33, z);
- }
- }
-}