diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/math/raw/Nat224.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/math/raw/Nat224.java | 1182 |
1 files changed, 0 insertions, 1182 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/raw/Nat224.java b/core/src/main/java/org/bouncycastle/math/raw/Nat224.java deleted file mode 100644 index bbe81caa..00000000 --- a/core/src/main/java/org/bouncycastle/math/raw/Nat224.java +++ /dev/null @@ -1,1182 +0,0 @@ -package org.bouncycastle.math.raw; - -import java.math.BigInteger; - -import org.bouncycastle.util.Pack; - -public abstract class Nat224 -{ - private static final long M = 0xFFFFFFFFL; - - public static int add(int[] x, int[] y, int[] z) - { - long c = 0; - c += (x[0] & M) + (y[0] & M); - z[0] = (int)c; - c >>>= 32; - c += (x[1] & M) + (y[1] & M); - z[1] = (int)c; - c >>>= 32; - c += (x[2] & M) + (y[2] & M); - z[2] = (int)c; - c >>>= 32; - c += (x[3] & M) + (y[3] & M); - z[3] = (int)c; - c >>>= 32; - c += (x[4] & M) + (y[4] & M); - z[4] = (int)c; - c >>>= 32; - c += (x[5] & M) + (y[5] & M); - z[5] = (int)c; - c >>>= 32; - c += (x[6] & M) + (y[6] & M); - z[6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int add(int[] x, int xOff, int[] y, int yOff, int[] z, int zOff) - { - long c = 0; - c += (x[xOff + 0] & M) + (y[yOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += (x[xOff + 1] & M) + (y[yOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += (x[xOff + 2] & M) + (y[yOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - c += (x[xOff + 3] & M) + (y[yOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - c += (x[xOff + 4] & M) + (y[yOff + 4] & M); - z[zOff + 4] = (int)c; - c >>>= 32; - c += (x[xOff + 5] & M) + (y[yOff + 5] & M); - z[zOff + 5] = (int)c; - c >>>= 32; - c += (x[xOff + 6] & M) + (y[yOff + 6] & M); - z[zOff + 6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int addBothTo(int[] x, int[] y, int[] z) - { - long c = 0; - c += (x[0] & M) + (y[0] & M) + (z[0] & M); - z[0] = (int)c; - c >>>= 32; - c += (x[1] & M) + (y[1] & M) + (z[1] & M); - z[1] = (int)c; - c >>>= 32; - c += (x[2] & M) + (y[2] & M) + (z[2] & M); - z[2] = (int)c; - c >>>= 32; - c += (x[3] & M) + (y[3] & M) + (z[3] & M); - z[3] = (int)c; - c >>>= 32; - c += (x[4] & M) + (y[4] & M) + (z[4] & M); - z[4] = (int)c; - c >>>= 32; - c += (x[5] & M) + (y[5] & M) + (z[5] & M); - z[5] = (int)c; - c >>>= 32; - c += (x[6] & M) + (y[6] & M) + (z[6] & M); - z[6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int addBothTo(int[] x, int xOff, int[] y, int yOff, int[] z, int zOff) - { - long c = 0; - c += (x[xOff + 0] & M) + (y[yOff + 0] & M) + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += (x[xOff + 1] & M) + (y[yOff + 1] & M) + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += (x[xOff + 2] & M) + (y[yOff + 2] & M) + (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - c += (x[xOff + 3] & M) + (y[yOff + 3] & M) + (z[zOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - c += (x[xOff + 4] & M) + (y[yOff + 4] & M) + (z[zOff + 4] & M); - z[zOff + 4] = (int)c; - c >>>= 32; - c += (x[xOff + 5] & M) + (y[yOff + 5] & M) + (z[zOff + 5] & M); - z[zOff + 5] = (int)c; - c >>>= 32; - c += (x[xOff + 6] & M) + (y[yOff + 6] & M) + (z[zOff + 6] & M); - z[zOff + 6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int addTo(int[] x, int[] z) - { - long c = 0; - c += (x[0] & M) + (z[0] & M); - z[0] = (int)c; - c >>>= 32; - c += (x[1] & M) + (z[1] & M); - z[1] = (int)c; - c >>>= 32; - c += (x[2] & M) + (z[2] & M); - z[2] = (int)c; - c >>>= 32; - c += (x[3] & M) + (z[3] & M); - z[3] = (int)c; - c >>>= 32; - c += (x[4] & M) + (z[4] & M); - z[4] = (int)c; - c >>>= 32; - c += (x[5] & M) + (z[5] & M); - z[5] = (int)c; - c >>>= 32; - c += (x[6] & M) + (z[6] & M); - z[6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int addTo(int[] x, int xOff, int[] z, int zOff, int cIn) - { - long c = cIn & M; - c += (x[xOff + 0] & M) + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += (x[xOff + 1] & M) + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += (x[xOff + 2] & M) + (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - c += (x[xOff + 3] & M) + (z[zOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - c += (x[xOff + 4] & M) + (z[zOff + 4] & M); - z[zOff + 4] = (int)c; - c >>>= 32; - c += (x[xOff + 5] & M) + (z[zOff + 5] & M); - z[zOff + 5] = (int)c; - c >>>= 32; - c += (x[xOff + 6] & M) + (z[zOff + 6] & M); - z[zOff + 6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int addToEachOther(int[] u, int uOff, int[] v, int vOff) - { - long c = 0; - c += (u[uOff + 0] & M) + (v[vOff + 0] & M); - u[uOff + 0] = (int)c; - v[vOff + 0] = (int)c; - c >>>= 32; - c += (u[uOff + 1] & M) + (v[vOff + 1] & M); - u[uOff + 1] = (int)c; - v[vOff + 1] = (int)c; - c >>>= 32; - c += (u[uOff + 2] & M) + (v[vOff + 2] & M); - u[uOff + 2] = (int)c; - v[vOff + 2] = (int)c; - c >>>= 32; - c += (u[uOff + 3] & M) + (v[vOff + 3] & M); - u[uOff + 3] = (int)c; - v[vOff + 3] = (int)c; - c >>>= 32; - c += (u[uOff + 4] & M) + (v[vOff + 4] & M); - u[uOff + 4] = (int)c; - v[vOff + 4] = (int)c; - c >>>= 32; - c += (u[uOff + 5] & M) + (v[vOff + 5] & M); - u[uOff + 5] = (int)c; - v[vOff + 5] = (int)c; - c >>>= 32; - c += (u[uOff + 6] & M) + (v[vOff + 6] & M); - u[uOff + 6] = (int)c; - v[vOff + 6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static void copy(int[] x, int[] 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 int[] create() - { - return new int[7]; - } - - public static int[] createExt() - { - return new int[14]; - } - - public static boolean diff(int[] x, int xOff, int[] y, int yOff, int[] z, int zOff) - { - boolean 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 boolean eq(int[] x, int[] y) - { - for (int i = 6; i >= 0; --i) - { - if (x[i] != y[i]) - { - return false; - } - } - return true; - } - - public static int[] fromBigInteger(BigInteger x) - { - if (x.signum() < 0 || x.bitLength() > 224) - { - throw new IllegalArgumentException(); - } - - int[] z = create(); - int i = 0; - while (x.signum() != 0) - { - z[i++] = x.intValue(); - x = x.shiftRight(32); - } - return z; - } - - public static int getBit(int[] x, int bit) - { - if (bit == 0) - { - return x[0] & 1; - } - int w = bit >> 5; - if (w < 0 || w >= 7) - { - return 0; - } - int b = bit & 31; - return (x[w] >>> b) & 1; - } - - public static boolean gte(int[] x, int[] y) - { - for (int i = 6; i >= 0; --i) - { - int x_i = x[i] ^ Integer.MIN_VALUE; - int y_i = y[i] ^ Integer.MIN_VALUE; - if (x_i < y_i) - return false; - if (x_i > y_i) - return true; - } - return true; - } - - public static boolean gte(int[] x, int xOff, int[] y, int yOff) - { - for (int i = 6; i >= 0; --i) - { - int x_i = x[xOff + i] ^ Integer.MIN_VALUE; - int y_i = y[yOff + i] ^ Integer.MIN_VALUE; - if (x_i < y_i) - return false; - if (x_i > y_i) - return true; - } - return true; - } - - public static boolean isOne(int[] x) - { - if (x[0] != 1) - { - return false; - } - for (int i = 1; i < 7; ++i) - { - if (x[i] != 0) - { - return false; - } - } - return true; - } - - public static boolean isZero(int[] x) - { - for (int i = 0; i < 7; ++i) - { - if (x[i] != 0) - { - return false; - } - } - return true; - } - - public static void mul(int[] x, int[] y, int[] zz) - { - long y_0 = y[0] & M; - long y_1 = y[1] & M; - long y_2 = y[2] & M; - long y_3 = y[3] & M; - long y_4 = y[4] & M; - long y_5 = y[5] & M; - long y_6 = y[6] & M; - - { - long c = 0, x_0 = x[0] & M; - c += x_0 * y_0; - zz[0] = (int)c; - c >>>= 32; - c += x_0 * y_1; - zz[1] = (int)c; - c >>>= 32; - c += x_0 * y_2; - zz[2] = (int)c; - c >>>= 32; - c += x_0 * y_3; - zz[3] = (int)c; - c >>>= 32; - c += x_0 * y_4; - zz[4] = (int)c; - c >>>= 32; - c += x_0 * y_5; - zz[5] = (int)c; - c >>>= 32; - c += x_0 * y_6; - zz[6] = (int)c; - c >>>= 32; - zz[7] = (int)c; - } - - for (int i = 1; i < 7; ++i) - { - long c = 0, x_i = x[i] & M; - c += x_i * y_0 + (zz[i + 0] & M); - zz[i + 0] = (int)c; - c >>>= 32; - c += x_i * y_1 + (zz[i + 1] & M); - zz[i + 1] = (int)c; - c >>>= 32; - c += x_i * y_2 + (zz[i + 2] & M); - zz[i + 2] = (int)c; - c >>>= 32; - c += x_i * y_3 + (zz[i + 3] & M); - zz[i + 3] = (int)c; - c >>>= 32; - c += x_i * y_4 + (zz[i + 4] & M); - zz[i + 4] = (int)c; - c >>>= 32; - c += x_i * y_5 + (zz[i + 5] & M); - zz[i + 5] = (int)c; - c >>>= 32; - c += x_i * y_6 + (zz[i + 6] & M); - zz[i + 6] = (int)c; - c >>>= 32; - zz[i + 7] = (int)c; - } - } - - public static void mul(int[] x, int xOff, int[] y, int yOff, int[] zz, int zzOff) - { - long y_0 = y[yOff + 0] & M; - long y_1 = y[yOff + 1] & M; - long y_2 = y[yOff + 2] & M; - long y_3 = y[yOff + 3] & M; - long y_4 = y[yOff + 4] & M; - long y_5 = y[yOff + 5] & M; - long y_6 = y[yOff + 6] & M; - - { - long c = 0, x_0 = x[xOff + 0] & M; - c += x_0 * y_0; - zz[zzOff + 0] = (int)c; - c >>>= 32; - c += x_0 * y_1; - zz[zzOff + 1] = (int)c; - c >>>= 32; - c += x_0 * y_2; - zz[zzOff + 2] = (int)c; - c >>>= 32; - c += x_0 * y_3; - zz[zzOff + 3] = (int)c; - c >>>= 32; - c += x_0 * y_4; - zz[zzOff + 4] = (int)c; - c >>>= 32; - c += x_0 * y_5; - zz[zzOff + 5] = (int)c; - c >>>= 32; - c += x_0 * y_6; - zz[zzOff + 6] = (int)c; - c >>>= 32; - zz[zzOff + 7] = (int)c; - } - - for (int i = 1; i < 7; ++i) - { - ++zzOff; - long c = 0, x_i = x[xOff + i] & M; - c += x_i * y_0 + (zz[zzOff + 0] & M); - zz[zzOff + 0] = (int)c; - c >>>= 32; - c += x_i * y_1 + (zz[zzOff + 1] & M); - zz[zzOff + 1] = (int)c; - c >>>= 32; - c += x_i * y_2 + (zz[zzOff + 2] & M); - zz[zzOff + 2] = (int)c; - c >>>= 32; - c += x_i * y_3 + (zz[zzOff + 3] & M); - zz[zzOff + 3] = (int)c; - c >>>= 32; - c += x_i * y_4 + (zz[zzOff + 4] & M); - zz[zzOff + 4] = (int)c; - c >>>= 32; - c += x_i * y_5 + (zz[zzOff + 5] & M); - zz[zzOff + 5] = (int)c; - c >>>= 32; - c += x_i * y_6 + (zz[zzOff + 6] & M); - zz[zzOff + 6] = (int)c; - c >>>= 32; - zz[zzOff + 7] = (int)c; - } - } - - public static int mulAddTo(int[] x, int[] y, int[] zz) - { - long y_0 = y[0] & M; - long y_1 = y[1] & M; - long y_2 = y[2] & M; - long y_3 = y[3] & M; - long y_4 = y[4] & M; - long y_5 = y[5] & M; - long y_6 = y[6] & M; - - long zc = 0; - for (int i = 0; i < 7; ++i) - { - long c = 0, x_i = x[i] & M; - c += x_i * y_0 + (zz[i + 0] & M); - zz[i + 0] = (int)c; - c >>>= 32; - c += x_i * y_1 + (zz[i + 1] & M); - zz[i + 1] = (int)c; - c >>>= 32; - c += x_i * y_2 + (zz[i + 2] & M); - zz[i + 2] = (int)c; - c >>>= 32; - c += x_i * y_3 + (zz[i + 3] & M); - zz[i + 3] = (int)c; - c >>>= 32; - c += x_i * y_4 + (zz[i + 4] & M); - zz[i + 4] = (int)c; - c >>>= 32; - c += x_i * y_5 + (zz[i + 5] & M); - zz[i + 5] = (int)c; - c >>>= 32; - c += x_i * y_6 + (zz[i + 6] & M); - zz[i + 6] = (int)c; - c >>>= 32; - c += zc + (zz[i + 7] & M); - zz[i + 7] = (int)c; - zc = c >>> 32; - } - return (int)zc; - } - - public static int mulAddTo(int[] x, int xOff, int[] y, int yOff, int[] zz, int zzOff) - { - long y_0 = y[yOff + 0] & M; - long y_1 = y[yOff + 1] & M; - long y_2 = y[yOff + 2] & M; - long y_3 = y[yOff + 3] & M; - long y_4 = y[yOff + 4] & M; - long y_5 = y[yOff + 5] & M; - long y_6 = y[yOff + 6] & M; - - long zc = 0; - for (int i = 0; i < 7; ++i) - { - long c = 0, x_i = x[xOff + i] & M; - c += x_i * y_0 + (zz[zzOff + 0] & M); - zz[zzOff + 0] = (int)c; - c >>>= 32; - c += x_i * y_1 + (zz[zzOff + 1] & M); - zz[zzOff + 1] = (int)c; - c >>>= 32; - c += x_i * y_2 + (zz[zzOff + 2] & M); - zz[zzOff + 2] = (int)c; - c >>>= 32; - c += x_i * y_3 + (zz[zzOff + 3] & M); - zz[zzOff + 3] = (int)c; - c >>>= 32; - c += x_i * y_4 + (zz[zzOff + 4] & M); - zz[zzOff + 4] = (int)c; - c >>>= 32; - c += x_i * y_5 + (zz[zzOff + 5] & M); - zz[zzOff + 5] = (int)c; - c >>>= 32; - c += x_i * y_6 + (zz[zzOff + 6] & M); - zz[zzOff + 6] = (int)c; - c >>>= 32; - c += zc + (zz[zzOff + 7] & M); - zz[zzOff + 7] = (int)c; - zc = c >>> 32; - ++zzOff; - } - return (int)zc; - } - - public static long mul33Add(int w, int[] x, int xOff, int[] y, int yOff, int[] z, int zOff) - { - // assert w >>> 31 == 0; - - long c = 0, wVal = w & M; - long x0 = x[xOff + 0] & M; - c += wVal * x0 + (y[yOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - long x1 = x[xOff + 1] & M; - c += wVal * x1 + x0 + (y[yOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - long x2 = x[xOff + 2] & M; - c += wVal * x2 + x1 + (y[yOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - long x3 = x[xOff + 3] & M; - c += wVal * x3 + x2 + (y[yOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - long x4 = x[xOff + 4] & M; - c += wVal * x4 + x3 + (y[yOff + 4] & M); - z[zOff + 4] = (int)c; - c >>>= 32; - long x5 = x[xOff + 5] & M; - c += wVal * x5 + x4 + (y[yOff + 5] & M); - z[zOff + 5] = (int)c; - c >>>= 32; - long x6 = x[xOff + 6] & M; - c += wVal * x6 + x5 + (y[yOff + 6] & M); - z[zOff + 6] = (int)c; - c >>>= 32; - c += x6; - return c; - } - - public static int mulByWord(int x, int[] z) - { - long c = 0, xVal = x & M; - c += xVal * (z[0] & M); - z[0] = (int)c; - c >>>= 32; - c += xVal * (z[1] & M); - z[1] = (int)c; - c >>>= 32; - c += xVal * (z[2] & M); - z[2] = (int)c; - c >>>= 32; - c += xVal * (z[3] & M); - z[3] = (int)c; - c >>>= 32; - c += xVal * (z[4] & M); - z[4] = (int)c; - c >>>= 32; - c += xVal * (z[5] & M); - z[5] = (int)c; - c >>>= 32; - c += xVal * (z[6] & M); - z[6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int mulByWordAddTo(int x, int[] y, int[] z) - { - long c = 0, xVal = x & M; - c += xVal * (z[0] & M) + (y[0] & M); - z[0] = (int)c; - c >>>= 32; - c += xVal * (z[1] & M) + (y[1] & M); - z[1] = (int)c; - c >>>= 32; - c += xVal * (z[2] & M) + (y[2] & M); - z[2] = (int)c; - c >>>= 32; - c += xVal * (z[3] & M) + (y[3] & M); - z[3] = (int)c; - c >>>= 32; - c += xVal * (z[4] & M) + (y[4] & M); - z[4] = (int)c; - c >>>= 32; - c += xVal * (z[5] & M) + (y[5] & M); - z[5] = (int)c; - c >>>= 32; - c += xVal * (z[6] & M) + (y[6] & M); - z[6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int mulWordAddTo(int x, int[] y, int yOff, int[] z, int zOff) - { - long c = 0, xVal = x & M; - c += xVal * (y[yOff + 0] & M) + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 1] & M) + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 2] & M) + (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 3] & M) + (z[zOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 4] & M) + (z[zOff + 4] & M); - z[zOff + 4] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 5] & M) + (z[zOff + 5] & M); - z[zOff + 5] = (int)c; - c >>>= 32; - c += xVal * (y[yOff + 6] & M) + (z[zOff + 6] & M); - z[zOff + 6] = (int)c; - c >>>= 32; - return (int)c; - } - - public static int mul33DWordAdd(int x, long y, int[] z, int zOff) - { - // assert x >>> 31 == 0; - // assert zOff <= 3; - - long c = 0, xVal = x & M; - long y00 = y & M; - c += xVal * y00 + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - long y01 = y >>> 32; - c += xVal * y01 + y00 + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += y01 + (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - c += (z[zOff + 3] & M); - z[zOff + 3] = (int)c; - c >>>= 32; - return c == 0 ? 0 : Nat.incAt(7, z, zOff, 4); - } - - public static int mul33WordAdd(int x, int y, int[] z, int zOff) - { - // assert x >>> 31 == 0; - // assert zOff <= 4; - - long c = 0, xVal = x & M, yVal = y & M; - c += yVal * xVal + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += yVal + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - return c == 0 ? 0 : Nat.incAt(7, z, zOff, 3); - } - - public static int mulWordDwordAdd(int x, long y, int[] z, int zOff) - { - // assert zOff <= 4; - long c = 0, xVal = x & M; - c += xVal * (y & M) + (z[zOff + 0] & M); - z[zOff + 0] = (int)c; - c >>>= 32; - c += xVal * (y >>> 32) + (z[zOff + 1] & M); - z[zOff + 1] = (int)c; - c >>>= 32; - c += (z[zOff + 2] & M); - z[zOff + 2] = (int)c; - c >>>= 32; - return c == 0 ? 0 : Nat.incAt(7, z, zOff, 3); - } - - public static int mulWord(int x, int[] y, int[] z, int zOff) - { - long c = 0, xVal = x & M; - int i = 0; - do - { - c += xVal * (y[i] & M); - z[zOff + i] = (int)c; - c >>>= 32; - } - while (++i < 7); - return (int)c; - } - - public static void square(int[] x, int[] zz) - { - long x_0 = x[0] & M; - long zz_1; - - int c = 0, w; - { - int i = 6, j = 14; - do - { - long xVal = (x[i--] & M); - long p = xVal * xVal; - zz[--j] = (c << 31) | (int)(p >>> 33); - zz[--j] = (int)(p >>> 1); - c = (int)p; - } - while (i > 0); - - { - long p = x_0 * x_0; - zz_1 = ((c << 31) & M) | (p >>> 33); - zz[0] = (int)p; - c = (int)(p >>> 32) & 1; - } - } - - long x_1 = x[1] & M; - long zz_2 = zz[2] & M; - - { - zz_1 += x_1 * x_0; - w = (int)zz_1; - zz[1] = (w << 1) | c; - c = w >>> 31; - zz_2 += zz_1 >>> 32; - } - - long x_2 = x[2] & M; - long zz_3 = zz[3] & M; - long zz_4 = zz[4] & M; - { - zz_2 += x_2 * x_0; - w = (int)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; - } - - long x_3 = x[3] & M; - long zz_5 = zz[5] & M; - long zz_6 = zz[6] & M; - { - zz_3 += x_3 * x_0; - w = (int)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; - } - - long x_4 = x[4] & M; - long zz_7 = zz[7] & M; - long zz_8 = zz[8] & M; - { - zz_4 += x_4 * x_0; - w = (int)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_5 &= M; - zz_7 += (zz_6 >>> 32) + x_4 * x_3; - zz_6 &= M; - zz_8 += zz_7 >>> 32; - zz_7 &= M; - } - - long x_5 = x[5] & M; - long zz_9 = zz[9] & M; - long zz_10 = zz[10] & M; - { - zz_5 += x_5 * x_0; - w = (int)zz_5; - zz[5] = (w << 1) | c; - c = w >>> 31; - zz_6 += (zz_5 >>> 32) + x_5 * x_1; - zz_7 += (zz_6 >>> 32) + x_5 * x_2; - zz_6 &= M; - zz_8 += (zz_7 >>> 32) + x_5 * x_3; - zz_7 &= M; - zz_9 += (zz_8 >>> 32) + x_5 * x_4; - zz_8 &= M; - zz_10 += zz_9 >>> 32; - zz_9 &= M; - } - - long x_6 = x[6] & M; - long zz_11 = zz[11] & M; - long zz_12 = zz[12] & M; - { - zz_6 += x_6 * x_0; - w = (int)zz_6; - zz[6] = (w << 1) | c; - c = w >>> 31; - zz_7 += (zz_6 >>> 32) + x_6 * x_1; - zz_8 += (zz_7 >>> 32) + x_6 * x_2; - zz_9 += (zz_8 >>> 32) + x_6 * x_3; - zz_10 += (zz_9 >>> 32) + x_6 * x_4; - zz_11 += (zz_10 >>> 32) + x_6 * x_5; - zz_12 += zz_11 >>> 32; - } - - w = (int)zz_7; - zz[7] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_8; - zz[8] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_9; - zz[9] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_10; - zz[10] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_11; - zz[11] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_12; - zz[12] = (w << 1) | c; - c = w >>> 31; - w = zz[13] + (int)(zz_12 >> 32); - zz[13] = (w << 1) | c; - } - - public static void square(int[] x, int xOff, int[] zz, int zzOff) - { - long x_0 = x[xOff + 0] & M; - long zz_1; - - int c = 0, w; - { - int i = 6, j = 14; - do - { - long xVal = (x[xOff + i--] & M); - long p = xVal * xVal; - zz[zzOff + --j] = (c << 31) | (int)(p >>> 33); - zz[zzOff + --j] = (int)(p >>> 1); - c = (int)p; - } - while (i > 0); - - { - long p = x_0 * x_0; - zz_1 = ((c << 31) & M) | (p >>> 33); - zz[zzOff + 0] = (int)p; - c = (int)(p >>> 32) & 1; - } - } - - long x_1 = x[xOff + 1] & M; - long zz_2 = zz[zzOff + 2] & M; - - { - zz_1 += x_1 * x_0; - w = (int)zz_1; - zz[zzOff + 1] = (w << 1) | c; - c = w >>> 31; - zz_2 += zz_1 >>> 32; - } - - long x_2 = x[xOff + 2] & M; - long zz_3 = zz[zzOff + 3] & M; - long zz_4 = zz[zzOff + 4] & M; - { - zz_2 += x_2 * x_0; - w = (int)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; - } - - long x_3 = x[xOff + 3] & M; - long zz_5 = zz[zzOff + 5] & M; - long zz_6 = zz[zzOff + 6] & M; - { - zz_3 += x_3 * x_0; - w = (int)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; - } - - long x_4 = x[xOff + 4] & M; - long zz_7 = zz[zzOff + 7] & M; - long zz_8 = zz[zzOff + 8] & M; - { - zz_4 += x_4 * x_0; - w = (int)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_5 &= M; - zz_7 += (zz_6 >>> 32) + x_4 * x_3; - zz_6 &= M; - zz_8 += zz_7 >>> 32; - zz_7 &= M; - } - - long x_5 = x[xOff + 5] & M; - long zz_9 = zz[zzOff + 9] & M; - long zz_10 = zz[zzOff + 10] & M; - { - zz_5 += x_5 * x_0; - w = (int)zz_5; - zz[zzOff + 5] = (w << 1) | c; - c = w >>> 31; - zz_6 += (zz_5 >>> 32) + x_5 * x_1; - zz_7 += (zz_6 >>> 32) + x_5 * x_2; - zz_6 &= M; - zz_8 += (zz_7 >>> 32) + x_5 * x_3; - zz_7 &= M; - zz_9 += (zz_8 >>> 32) + x_5 * x_4; - zz_8 &= M; - zz_10 += zz_9 >>> 32; - zz_9 &= M; - } - - long x_6 = x[xOff + 6] & M; - long zz_11 = zz[zzOff + 11] & M; - long zz_12 = zz[zzOff + 12] & M; - { - zz_6 += x_6 * x_0; - w = (int)zz_6; - zz[zzOff + 6] = (w << 1) | c; - c = w >>> 31; - zz_7 += (zz_6 >>> 32) + x_6 * x_1; - zz_8 += (zz_7 >>> 32) + x_6 * x_2; - zz_9 += (zz_8 >>> 32) + x_6 * x_3; - zz_10 += (zz_9 >>> 32) + x_6 * x_4; - zz_11 += (zz_10 >>> 32) + x_6 * x_5; - zz_12 += zz_11 >>> 32; - } - - w = (int)zz_7; - zz[zzOff + 7] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_8; - zz[zzOff + 8] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_9; - zz[zzOff + 9] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_10; - zz[zzOff + 10] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_11; - zz[zzOff + 11] = (w << 1) | c; - c = w >>> 31; - w = (int)zz_12; - zz[zzOff + 12] = (w << 1) | c; - c = w >>> 31; - w = zz[zzOff + 13] + (int)(zz_12 >> 32); - zz[zzOff + 13] = (w << 1) | c; - } - - public static int sub(int[] x, int[] y, int[] z) - { - long c = 0; - c += (x[0] & M) - (y[0] & M); - z[0] = (int)c; - c >>= 32; - c += (x[1] & M) - (y[1] & M); - z[1] = (int)c; - c >>= 32; - c += (x[2] & M) - (y[2] & M); - z[2] = (int)c; - c >>= 32; - c += (x[3] & M) - (y[3] & M); - z[3] = (int)c; - c >>= 32; - c += (x[4] & M) - (y[4] & M); - z[4] = (int)c; - c >>= 32; - c += (x[5] & M) - (y[5] & M); - z[5] = (int)c; - c >>= 32; - c += (x[6] & M) - (y[6] & M); - z[6] = (int)c; - c >>= 32; - return (int)c; - } - - public static int sub(int[] x, int xOff, int[] y, int yOff, int[] z, int zOff) - { - long c = 0; - c += (x[xOff + 0] & M) - (y[yOff + 0] & M); - z[zOff + 0] = (int)c; - c >>= 32; - c += (x[xOff + 1] & M) - (y[yOff + 1] & M); - z[zOff + 1] = (int)c; - c >>= 32; - c += (x[xOff + 2] & M) - (y[yOff + 2] & M); - z[zOff + 2] = (int)c; - c >>= 32; - c += (x[xOff + 3] & M) - (y[yOff + 3] & M); - z[zOff + 3] = (int)c; - c >>= 32; - c += (x[xOff + 4] & M) - (y[yOff + 4] & M); - z[zOff + 4] = (int)c; - c >>= 32; - c += (x[xOff + 5] & M) - (y[yOff + 5] & M); - z[zOff + 5] = (int)c; - c >>= 32; - c += (x[xOff + 6] & M) - (y[yOff + 6] & M); - z[zOff + 6] = (int)c; - c >>= 32; - return (int)c; - } - - public static int subBothFrom(int[] x, int[] y, int[] z) - { - long c = 0; - c += (z[0] & M) - (x[0] & M) - (y[0] & M); - z[0] = (int)c; - c >>= 32; - c += (z[1] & M) - (x[1] & M) - (y[1] & M); - z[1] = (int)c; - c >>= 32; - c += (z[2] & M) - (x[2] & M) - (y[2] & M); - z[2] = (int)c; - c >>= 32; - c += (z[3] & M) - (x[3] & M) - (y[3] & M); - z[3] = (int)c; - c >>= 32; - c += (z[4] & M) - (x[4] & M) - (y[4] & M); - z[4] = (int)c; - c >>= 32; - c += (z[5] & M) - (x[5] & M) - (y[5] & M); - z[5] = (int)c; - c >>= 32; - c += (z[6] & M) - (x[6] & M) - (y[6] & M); - z[6] = (int)c; - c >>= 32; - return (int)c; - } - - public static int subFrom(int[] x, int[] z) - { - long c = 0; - c += (z[0] & M) - (x[0] & M); - z[0] = (int)c; - c >>= 32; - c += (z[1] & M) - (x[1] & M); - z[1] = (int)c; - c >>= 32; - c += (z[2] & M) - (x[2] & M); - z[2] = (int)c; - c >>= 32; - c += (z[3] & M) - (x[3] & M); - z[3] = (int)c; - c >>= 32; - c += (z[4] & M) - (x[4] & M); - z[4] = (int)c; - c >>= 32; - c += (z[5] & M) - (x[5] & M); - z[5] = (int)c; - c >>= 32; - c += (z[6] & M) - (x[6] & M); - z[6] = (int)c; - c >>= 32; - return (int)c; - } - - public static int subFrom(int[] x, int xOff, int[] z, int zOff) - { - long c = 0; - c += (z[zOff + 0] & M) - (x[xOff + 0] & M); - z[zOff + 0] = (int)c; - c >>= 32; - c += (z[zOff + 1] & M) - (x[xOff + 1] & M); - z[zOff + 1] = (int)c; - c >>= 32; - c += (z[zOff + 2] & M) - (x[xOff + 2] & M); - z[zOff + 2] = (int)c; - c >>= 32; - c += (z[zOff + 3] & M) - (x[xOff + 3] & M); - z[zOff + 3] = (int)c; - c >>= 32; - c += (z[zOff + 4] & M) - (x[xOff + 4] & M); - z[zOff + 4] = (int)c; - c >>= 32; - c += (z[zOff + 5] & M) - (x[xOff + 5] & M); - z[zOff + 5] = (int)c; - c >>= 32; - c += (z[zOff + 6] & M) - (x[xOff + 6] & M); - z[zOff + 6] = (int)c; - c >>= 32; - return (int)c; - } - - public static BigInteger toBigInteger(int[] x) - { - byte[] bs = new byte[28]; - for (int i = 0; i < 7; ++i) - { - int x_i = x[i]; - if (x_i != 0) - { - Pack.intToBigEndian(x_i, bs, (6 - i) << 2); - } - } - return new BigInteger(1, bs); - } - - public static void zero(int[] z) - { - z[0] = 0; - z[1] = 0; - z[2] = 0; - z[3] = 0; - z[4] = 0; - z[5] = 0; - z[6] = 0; - } -} |