Curve25519Point.smali
.class public Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
.super Lorg/spongycastle/math/ec/ECPoint$AbstractFp;
.source "Curve25519Point.java"
# direct methods
.method public constructor <init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;)V
.registers 5
.prologue
.line 21
const/4 v0, 0x0
invoke-direct {p0, p1, p2, p3, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;Z)V
.line 22
return-void
.end method
.method public constructor <init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;Z)V
.registers 8
.prologue
const/4 v0, 0x1
const/4 v1, 0x0
.line 36
invoke-direct {p0, p1, p2, p3}, Lorg/spongycastle/math/ec/ECPoint$AbstractFp;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;)V
.line 38
if-nez p2, :cond_14
move v2, v0
:goto_8
if-nez p3, :cond_16
:goto_a
if-eq v2, v0, :cond_18
.line 40
new-instance v0, Ljava/lang/IllegalArgumentException;
const-string v1, "Exactly one of the field elements is null"
invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V
throw v0
:cond_14
move v2, v1
.line 38
goto :goto_8
:cond_16
move v0, v1
goto :goto_a
.line 43
:cond_18
iput-boolean p4, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->withCompression:Z
.line 44
return-void
.end method
.method constructor <init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;[Lorg/spongycastle/math/ec/ECFieldElement;Z)V
.registers 6
.prologue
.line 48
invoke-direct {p0, p1, p2, p3, p4}, Lorg/spongycastle/math/ec/ECPoint$AbstractFp;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;[Lorg/spongycastle/math/ec/ECFieldElement;)V
.line 50
iput-boolean p5, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->withCompression:Z
.line 51
return-void
.end method
# virtual methods
.method public add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;
.registers 19
.prologue
.line 70
invoke-virtual/range {p0 .. p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->isInfinity()Z
move-result v2
if-eqz v2, :cond_7
.line 194
:goto_6
return-object p1
.line 74
:cond_7
invoke-virtual/range {p1 .. p1}, Lorg/spongycastle/math/ec/ECPoint;->isInfinity()Z
move-result v2
if-eqz v2, :cond_10
move-object/from16 p1, p0
.line 76
goto :goto_6
.line 78
:cond_10
move-object/from16 v0, p0
move-object/from16 v1, p1
if-ne v0, v1, :cond_1b
.line 80
invoke-virtual/range {p0 .. p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twice()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
goto :goto_6
.line 83
:cond_1b
invoke-virtual/range {p0 .. p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getCurve()Lorg/spongycastle/math/ec/ECCurve;
move-result-object v3
.line 85
move-object/from16 v0, p0
iget-object v2, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->x:Lorg/spongycastle/math/ec/ECFieldElement;
check-cast v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-object/from16 v0, p0
iget-object v4, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
check-cast v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 86
move-object/from16 v0, p0
iget-object v5, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
const/4 v6, 0x0
aget-object v5, v5, v6
move-object v6, v5
check-cast v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 87
invoke-virtual/range {p1 .. p1}, Lorg/spongycastle/math/ec/ECPoint;->getXCoord()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v5
check-cast v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-virtual/range {p1 .. p1}, Lorg/spongycastle/math/ec/ECPoint;->getYCoord()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v7
check-cast v7, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 88
const/4 v8, 0x0
move-object/from16 v0, p1
invoke-virtual {v0, v8}, Lorg/spongycastle/math/ec/ECPoint;->getZCoord(I)Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v8
check-cast v8, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 91
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->createExt()[I
move-result-object v13
.line 92
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v11
.line 93
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v9
.line 94
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v12
.line 96
invoke-virtual {v6}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->isOne()Z
move-result v14
.line 98
if-eqz v14, :cond_8c
.line 100
iget-object v10, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
.line 101
iget-object v5, v7, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
move-object v7, v10
.line 115
:goto_65
invoke-virtual {v8}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->isOne()Z
move-result v15
.line 117
if-eqz v15, :cond_a3
.line 119
iget-object v10, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
.line 120
iget-object v2, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
move-object v4, v10
.line 134
:goto_70
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v10
.line 135
invoke-static {v4, v7, v10}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 138
invoke-static {v2, v5, v11}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 141
invoke-static {v10}, Lorg/spongycastle/math/raw/Nat256;->isZero([I)Z
move-result v5
if-eqz v5, :cond_c0
.line 143
invoke-static {v11}, Lorg/spongycastle/math/raw/Nat256;->isZero([I)Z
move-result v2
if-eqz v2, :cond_ba
.line 146
invoke-virtual/range {p0 .. p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twice()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
goto/16 :goto_6
.line 106
:cond_8c
iget-object v10, v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v10, v9}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 109
iget-object v5, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v9, v5, v11}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 111
iget-object v5, v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v9, v5, v9}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 112
iget-object v5, v7, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v9, v5, v9}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
move-object v5, v9
move-object v7, v11
goto :goto_65
.line 125
:cond_a3
iget-object v10, v8, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v10, v12}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 128
iget-object v2, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v12, v2, v13}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 130
iget-object v2, v8, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v12, v2, v12}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 131
iget-object v2, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v12, v2, v12}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
move-object v2, v12
move-object v4, v13
goto :goto_70
.line 150
:cond_ba
invoke-virtual {v3}, Lorg/spongycastle/math/ec/ECCurve;->getInfinity()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
goto/16 :goto_6
.line 153
:cond_c0
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v7
.line 154
invoke-static {v10, v7}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 156
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v16
.line 157
move-object/from16 v0, v16
invoke-static {v7, v10, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 160
invoke-static {v7, v4, v9}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 162
move-object/from16 v0, v16
move-object/from16 v1, v16
invoke-static {v0, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->negate([I[I)V
.line 163
move-object/from16 v0, v16
invoke-static {v2, v0, v13}, Lorg/spongycastle/math/raw/Nat256;->mul([I[I[I)V
.line 165
move-object/from16 v0, v16
invoke-static {v9, v9, v0}, Lorg/spongycastle/math/raw/Nat256;->addBothTo([I[I[I)I
move-result v2
.line 166
move-object/from16 v0, v16
invoke-static {v2, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->reduce27(I[I)V
.line 168
new-instance v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v4, v12}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 169
iget-object v2, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v11, v2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 170
iget-object v2, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v5, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
move-object/from16 v0, v16
invoke-static {v2, v0, v5}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 172
new-instance v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-object/from16 v0, v16
invoke-direct {v5, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 173
iget-object v2, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v12, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v9, v2, v12}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 174
iget-object v2, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v11, v13}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiplyAddToExt([I[I[I)V
.line 175
iget-object v2, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v13, v2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->reduce([I[I)V
.line 177
new-instance v9, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v9, v10}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 178
if-nez v14, :cond_125
.line 180
iget-object v2, v9, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v6, v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v10, v9, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v6, v10}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 182
:cond_125
if-nez v15, :cond_130
.line 184
iget-object v2, v9, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v6, v8, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v8, v9, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v6, v8}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 187
:cond_130
if-eqz v14, :cond_151
if-eqz v15, :cond_151
move-object v2, v7
.line 190
:goto_135
move-object/from16 v0, p0
invoke-virtual {v0, v9, v2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->calculateJacobianModifiedW(Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;[I)Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-result-object v2
.line 192
const/4 v6, 0x2
new-array v6, v6, [Lorg/spongycastle/math/ec/ECFieldElement;
const/4 v7, 0x0
aput-object v9, v6, v7
const/4 v7, 0x1
aput-object v2, v6, v7
.line 194
new-instance v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
move-object/from16 v0, p0
iget-boolean v7, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->withCompression:Z
invoke-direct/range {v2 .. v7}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;[Lorg/spongycastle/math/ec/ECFieldElement;Z)V
move-object/from16 p1, v2
goto/16 :goto_6
.line 187
:cond_151
const/4 v2, 0x0
goto :goto_135
.end method
.method protected calculateJacobianModifiedW(Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;[I)Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.registers 7
.prologue
.line 267
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getCurve()Lorg/spongycastle/math/ec/ECCurve;
move-result-object v0
invoke-virtual {v0}, Lorg/spongycastle/math/ec/ECCurve;->getA()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v0
check-cast v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 268
invoke-virtual {p1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->isOne()Z
move-result v1
if-eqz v1, :cond_11
.line 281
:goto_10
return-object v0
.line 273
:cond_11
new-instance v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>()V
.line 274
if-nez p2, :cond_1f
.line 276
iget-object p2, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
.line 277
iget-object v2, p1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, p2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 279
:cond_1f
iget-object v2, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {p2, v2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 280
iget-object v2, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v0, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v3, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v0, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
move-object v0, v1
.line 281
goto :goto_10
.end method
.method protected detach()Lorg/spongycastle/math/ec/ECPoint;
.registers 5
.prologue
.line 55
new-instance v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
const/4 v1, 0x0
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getAffineXCoord()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v2
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getAffineYCoord()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v3
invoke-direct {v0, v1, v2, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;)V
return-object v0
.end method
.method protected getJacobianModifiedW()Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.registers 5
.prologue
const/4 v3, 0x1
.line 286
iget-object v0, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
aget-object v0, v0, v3
check-cast v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 287
if-nez v0, :cond_19
.line 290
iget-object v1, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
iget-object v0, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
const/4 v2, 0x0
aget-object v0, v0, v2
check-cast v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
const/4 v2, 0x0
invoke-virtual {p0, v0, v2}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->calculateJacobianModifiedW(Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;[I)Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-result-object v0
aput-object v0, v1, v3
.line 292
:cond_19
return-object v0
.end method
.method public getZCoord(I)Lorg/spongycastle/math/ec/ECFieldElement;
.registers 3
.prologue
.line 60
const/4 v0, 0x1
if-ne p1, v0, :cond_8
.line 62
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getJacobianModifiedW()Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-result-object v0
.line 65
:goto_7
return-object v0
:cond_8
invoke-super {p0, p1}, Lorg/spongycastle/math/ec/ECPoint$AbstractFp;->getZCoord(I)Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v0
goto :goto_7
.end method
.method public negate()Lorg/spongycastle/math/ec/ECPoint;
.registers 7
.prologue
.line 257
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->isInfinity()Z
move-result v0
if-eqz v0, :cond_7
.line 262
:goto_6
return-object p0
:cond_7
new-instance v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getCurve()Lorg/spongycastle/math/ec/ECCurve;
move-result-object v1
iget-object v2, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->x:Lorg/spongycastle/math/ec/ECFieldElement;
iget-object v3, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
invoke-virtual {v3}, Lorg/spongycastle/math/ec/ECFieldElement;->negate()Lorg/spongycastle/math/ec/ECFieldElement;
move-result-object v3
iget-object v4, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
iget-boolean v5, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->withCompression:Z
invoke-direct/range {v0 .. v5}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;[Lorg/spongycastle/math/ec/ECFieldElement;Z)V
move-object p0, v0
goto :goto_6
.end method
.method public threeTimes()Lorg/spongycastle/math/ec/ECPoint;
.registers 2
.prologue
.line 241
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->isInfinity()Z
move-result v0
if-eqz v0, :cond_7
.line 252
:cond_6
:goto_6
return-object p0
.line 246
:cond_7
iget-object v0, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
.line 247
invoke-virtual {v0}, Lorg/spongycastle/math/ec/ECFieldElement;->isZero()Z
move-result v0
if-nez v0, :cond_6
.line 252
const/4 v0, 0x0
invoke-virtual {p0, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twiceJacobianModified(Z)Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
move-result-object v0
invoke-virtual {v0, p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;
move-result-object p0
goto :goto_6
.end method
.method public twice()Lorg/spongycastle/math/ec/ECPoint;
.registers 3
.prologue
.line 199
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->isInfinity()Z
move-result v0
if-eqz v0, :cond_7
.line 212
:goto_6
return-object p0
.line 204
:cond_7
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getCurve()Lorg/spongycastle/math/ec/ECCurve;
move-result-object v0
.line 206
iget-object v1, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
.line 207
invoke-virtual {v1}, Lorg/spongycastle/math/ec/ECFieldElement;->isZero()Z
move-result v1
if-eqz v1, :cond_18
.line 209
invoke-virtual {v0}, Lorg/spongycastle/math/ec/ECCurve;->getInfinity()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p0
goto :goto_6
.line 212
:cond_18
const/4 v0, 0x1
invoke-virtual {p0, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twiceJacobianModified(Z)Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
move-result-object p0
goto :goto_6
.end method
.method protected twiceJacobianModified(Z)Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
.registers 13
.prologue
const/4 v10, 0x0
.line 297
iget-object v0, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->x:Lorg/spongycastle/math/ec/ECFieldElement;
check-cast v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
iget-object v1, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
check-cast v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
.line 298
iget-object v2, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->zs:[Lorg/spongycastle/math/ec/ECFieldElement;
aget-object v2, v2, v10
move-object v4, v2
check-cast v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getJacobianModifiedW()Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
move-result-object v5
.line 302
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v6
.line 303
iget-object v2, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v6}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 304
invoke-static {v6, v6, v6}, Lorg/spongycastle/math/raw/Nat256;->addBothTo([I[I[I)I
move-result v2
.line 305
iget-object v3, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v3, v6}, Lorg/spongycastle/math/raw/Nat256;->addTo([I[I)I
move-result v3
add-int/2addr v2, v3
.line 306
invoke-static {v2, v6}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->reduce27(I[I)V
.line 308
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v7
.line 309
iget-object v2, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v2, v7}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->twice([I[I)V
.line 311
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v3
.line 312
iget-object v1, v1, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v7, v1, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 314
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v1
.line 315
iget-object v0, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v3, v0, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 316
invoke-static {v1, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->twice([I[I)V
.line 318
invoke-static {}, Lorg/spongycastle/math/raw/Nat256;->create()[I
move-result-object v8
.line 319
invoke-static {v3, v8}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 320
invoke-static {v8, v8}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->twice([I[I)V
.line 322
new-instance v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v2, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 323
iget-object v0, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v6, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->square([I[I)V
.line 324
iget-object v0, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v3, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0, v1, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 325
iget-object v0, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v3, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0, v1, v3}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 327
new-instance v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v3, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 328
iget-object v0, v2, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v9, v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v1, v0, v9}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 329
iget-object v0, v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v1, v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0, v6, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 330
iget-object v0, v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v1, v3, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0, v8, v1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->subtract([I[I[I)V
.line 332
new-instance v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v6, v7}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 333
iget-object v0, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0}, Lorg/spongycastle/math/raw/Nat256;->isOne([I)Z
move-result v0
if-nez v0, :cond_9b
.line 335
iget-object v0, v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v1, v4, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v4, v6, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v0, v1, v4}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 338
:cond_9b
const/4 v0, 0x0
.line 339
if-eqz p1, :cond_c8
.line 341
new-instance v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;
invoke-direct {v0, v8}, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;-><init>([I)V
.line 342
iget-object v1, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v4, v5, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v5, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v1, v4, v5}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->multiply([I[I[I)V
.line 343
iget-object v1, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
iget-object v4, v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519FieldElement;->x:[I
invoke-static {v1, v4}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Field;->twice([I[I)V
move-object v5, v0
.line 346
:goto_b4
new-instance v0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->getCurve()Lorg/spongycastle/math/ec/ECCurve;
move-result-object v1
const/4 v4, 0x2
new-array v4, v4, [Lorg/spongycastle/math/ec/ECFieldElement;
aput-object v6, v4, v10
const/4 v6, 0x1
aput-object v5, v4, v6
iget-boolean v5, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->withCompression:Z
invoke-direct/range {v0 .. v5}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;-><init>(Lorg/spongycastle/math/ec/ECCurve;Lorg/spongycastle/math/ec/ECFieldElement;Lorg/spongycastle/math/ec/ECFieldElement;[Lorg/spongycastle/math/ec/ECFieldElement;Z)V
return-object v0
:cond_c8
move-object v5, v0
goto :goto_b4
.end method
.method public twicePlus(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;
.registers 3
.prologue
.line 217
if-ne p0, p1, :cond_7
.line 219
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->threeTimes()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
.line 236
:cond_6
:goto_6
return-object p1
.line 221
:cond_7
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->isInfinity()Z
move-result v0
if-nez v0, :cond_6
.line 225
invoke-virtual {p1}, Lorg/spongycastle/math/ec/ECPoint;->isInfinity()Z
move-result v0
if-eqz v0, :cond_18
.line 227
invoke-virtual {p0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twice()Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
goto :goto_6
.line 230
:cond_18
iget-object v0, p0, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->y:Lorg/spongycastle/math/ec/ECFieldElement;
.line 231
invoke-virtual {v0}, Lorg/spongycastle/math/ec/ECFieldElement;->isZero()Z
move-result v0
if-nez v0, :cond_6
.line 236
const/4 v0, 0x0
invoke-virtual {p0, v0}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->twiceJacobianModified(Z)Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;
move-result-object v0
invoke-virtual {v0, p1}, Lorg/spongycastle/math/ec/custom/djb/Curve25519Point;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;
move-result-object p1
goto :goto_6
.end method