diff options
author | Peter Dettman <peter.dettman@bouncycastle.org> | 2014-03-10 15:47:50 +0400 |
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committer | Peter Dettman <peter.dettman@bouncycastle.org> | 2014-03-10 15:47:50 +0400 |
commit | 8cf6187388edcc01d312d144dd492b1bfd832f9f (patch) | |
tree | 2d68a7f9c15ffc8c3d26d6c6546aeb5dd5c66788 /core/src/main/java/org | |
parent | 636dbce39a18b2e5732d1c9b9810776a3e1e3678 (diff) |
Add multiplyAddToExt method to fields
Diffstat (limited to 'core/src/main/java/org')
6 files changed, 69 insertions, 0 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 index 38ec656d..20827e55 100644 --- 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 @@ -76,6 +76,18 @@ public class SecP192K1Field 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)) 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 index a1fb5004..2f77815b 100644 --- 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 @@ -77,6 +77,18 @@ public class SecP192R1Field 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)) diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Field.java index ef752419..0a9eebc8 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Field.java +++ b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Field.java @@ -77,6 +77,18 @@ public class SecP224K1Field reduce(tt, z); } + public static void multiplyAddToExt(int[] x, int[] y, int[] zz) + { + int c = Nat224.mulAddTo(x, y, zz); + if (c != 0 || (zz[13] == PExt13 && Nat.gte(14, zz, PExt))) + { + if (Nat.addTo(PExtInv.length, PExtInv, zz) != 0) + { + Nat.incAt(14, zz, PExtInv.length); + } + } + } + public static void negate(int[] x, int[] z) { if (Nat224.isZero(x)) diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224R1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224R1Field.java index f10ed997..d39fb4dd 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224R1Field.java +++ b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224R1Field.java @@ -77,6 +77,18 @@ public class SecP224R1Field reduce(tt, z); } + public static void multiplyAddToExt(int[] x, int[] y, int[] zz) + { + int c = Nat224.mulAddTo(x, y, zz); + if (c != 0 || (zz[13] == PExt13 && Nat.gte(14, zz, PExt))) + { + if (Nat.addTo(PExtInv.length, PExtInv, zz) != 0) + { + Nat.incAt(14, zz, PExtInv.length); + } + } + } + public static void negate(int[] x, int[] z) { if (Nat224.isZero(x)) diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256K1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256K1Field.java index c09e5bc7..221f505c 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256K1Field.java +++ b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256K1Field.java @@ -78,6 +78,18 @@ public class SecP256K1Field reduce(tt, z); } + public static void multiplyAddToExt(int[] x, int[] y, int[] zz) + { + int c = Nat256.mulAddTo(x, y, zz); + if (c != 0 || (zz[15] == PExt15 && Nat.gte(16, zz, PExt))) + { + if (Nat.addTo(PExtInv.length, PExtInv, zz) != 0) + { + Nat.incAt(16, zz, PExtInv.length); + } + } + } + public static void negate(int[] x, int[] z) { if (Nat256.isZero(x)) diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256R1Field.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256R1Field.java index ff037c17..479f62e7 100644 --- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256R1Field.java +++ b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP256R1Field.java @@ -74,6 +74,15 @@ public class SecP256R1Field reduce(tt, z); } + public static void multiplyAddToExt(int[] x, int[] y, int[] zz) + { + int c = Nat256.mulAddTo(x, y, zz); + if (c != 0 || ((zz[15] & PExt15) == PExt15 && Nat.gte(16, zz, PExt))) + { + Nat.subFrom(16, PExt, zz); + } + } + public static void negate(int[] x, int[] z) { if (Nat256.isZero(x)) |