WNafUtil.smali

.class public abstract Lorg/spongycastle/math/ec/WNafUtil;
.super Ljava/lang/Object;
.source "WNafUtil.java"


# static fields
.field private static final DEFAULT_WINDOW_SIZE_CUTOFFS:[I

.field private static final EMPTY_BYTES:[B

.field private static final EMPTY_INTS:[I

.field private static final EMPTY_POINTS:[Lorg/spongycastle/math/ec/ECPoint;

.field public static final PRECOMP_NAME:Ljava/lang/String; = "bc_wnaf"


# direct methods
.method static constructor <clinit>()V
    .registers 2

    .prologue
    const/4 v1, 0x0

    .line 9
    const/4 v0, 0x6

    new-array v0, v0, [I

    fill-array-data v0, :array_16

    sput-object v0, Lorg/spongycastle/math/ec/WNafUtil;->DEFAULT_WINDOW_SIZE_CUTOFFS:[I

    .line 11
    new-array v0, v1, [B

    sput-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_BYTES:[B

    .line 12
    new-array v0, v1, [I

    sput-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_INTS:[I

    .line 13
    new-array v0, v1, [Lorg/spongycastle/math/ec/ECPoint;

    sput-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_POINTS:[Lorg/spongycastle/math/ec/ECPoint;

    return-void

    .line 9
    :array_16
    .array-data 4
        0xd
        0x29
        0x79
        0x151
        0x381
        0x901
    .end array-data
.end method

.method public constructor <init>()V
    .registers 1

    .prologue
    .line 5
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static generateCompactNaf(Ljava/math/BigInteger;)[I
    .registers 11

    .prologue
    const/4 v2, 0x0

    const/4 v1, 0x1

    .line 17
    invoke-virtual {p0}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    ushr-int/lit8 v0, v0, 0x10

    if-eqz v0, :cond_12

    .line 19
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "\'k\' must have bitlength < 2^16"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 21
    :cond_12
    invoke-virtual {p0}, Ljava/math/BigInteger;->signum()I

    move-result v0

    if-nez v0, :cond_1b

    .line 23
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_INTS:[I

    .line 55
    :goto_1a
    return-object v0

    .line 26
    :cond_1b
    invoke-virtual {p0, v1}, Ljava/math/BigInteger;->shiftLeft(I)Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 28
    invoke-virtual {v0}, Ljava/math/BigInteger;->bitLength()I

    move-result v3

    .line 29
    shr-int/lit8 v4, v3, 0x1

    new-array v5, v4, [I

    .line 31
    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->xor(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v7

    .line 33
    add-int/lit8 v8, v3, -0x1

    move v6, v2

    move v3, v2

    move v2, v1

    .line 34
    :goto_34
    if-ge v2, v8, :cond_5b

    .line 36
    invoke-virtual {v7, v2}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v0

    if-nez v0, :cond_46

    .line 38
    add-int/lit8 v0, v6, 0x1

    move v9, v2

    move v2, v0

    move v0, v9

    .line 34
    :goto_41
    add-int/lit8 v0, v0, 0x1

    move v6, v2

    move v2, v0

    goto :goto_34

    .line 42
    :cond_46
    invoke-virtual {p0, v2}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v0

    if-eqz v0, :cond_59

    const/4 v0, -0x1

    .line 43
    :goto_4d
    add-int/lit8 v4, v3, 0x1

    shl-int/lit8 v0, v0, 0x10

    or-int/2addr v0, v6

    aput v0, v5, v3

    .line 45
    add-int/lit8 v0, v2, 0x1

    move v2, v1

    move v3, v4

    goto :goto_41

    :cond_59
    move v0, v1

    .line 42
    goto :goto_4d

    .line 48
    :cond_5b
    add-int/lit8 v0, v3, 0x1

    const/high16 v1, 0x10000

    or-int/2addr v1, v6

    aput v1, v5, v3

    .line 50
    array-length v1, v5

    if-le v1, v0, :cond_6a

    .line 52
    invoke-static {v5, v0}, Lorg/spongycastle/math/ec/WNafUtil;->trim([II)[I

    move-result-object v0

    goto :goto_1a

    :cond_6a
    move-object v0, v5

    goto :goto_1a
.end method

.method public static generateCompactWindowNaf(ILjava/math/BigInteger;)[I
    .registers 13

    .prologue
    const/4 v0, 0x2

    const/4 v7, 0x1

    const/4 v1, 0x0

    .line 60
    if-ne p0, v0, :cond_a

    .line 62
    invoke-static {p1}, Lorg/spongycastle/math/ec/WNafUtil;->generateCompactNaf(Ljava/math/BigInteger;)[I

    move-result-object v0

    .line 121
    :goto_9
    return-object v0

    .line 65
    :cond_a
    if-lt p0, v0, :cond_10

    const/16 v0, 0x10

    if-le p0, v0, :cond_18

    .line 67
    :cond_10
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "\'width\' must be in the range [2, 16]"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 69
    :cond_18
    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    ushr-int/lit8 v0, v0, 0x10

    if-eqz v0, :cond_28

    .line 71
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "\'k\' must have bitlength < 2^16"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 73
    :cond_28
    invoke-virtual {p1}, Ljava/math/BigInteger;->signum()I

    move-result v0

    if-nez v0, :cond_31

    .line 75
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_INTS:[I

    goto :goto_9

    .line 78
    :cond_31
    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    div-int/2addr v0, p0

    add-int/lit8 v0, v0, 0x1

    new-array v5, v0, [I

    .line 81
    shl-int v8, v7, p0

    .line 82
    add-int/lit8 v9, v8, -0x1

    .line 83
    ushr-int/lit8 v10, v8, 0x1

    move v0, v1

    move v2, v1

    move v3, v1

    .line 88
    :goto_43
    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v4

    if-gt v0, v4, :cond_7b

    .line 90
    invoke-virtual {p1, v0}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v4

    if-ne v4, v3, :cond_52

    .line 92
    add-int/lit8 v0, v0, 0x1

    .line 93
    goto :goto_43

    .line 96
    :cond_52
    invoke-virtual {p1, v0}, Ljava/math/BigInteger;->shiftRight(I)Ljava/math/BigInteger;

    move-result-object p1

    .line 98
    invoke-virtual {p1}, Ljava/math/BigInteger;->intValue()I

    move-result v4

    and-int/2addr v4, v9

    .line 99
    if-eqz v3, :cond_5f

    .line 101
    add-int/lit8 v4, v4, 0x1

    .line 104
    :cond_5f
    and-int v3, v4, v10

    if-eqz v3, :cond_77

    move v3, v7

    .line 105
    :goto_64
    if-eqz v3, :cond_85

    .line 107
    sub-int/2addr v4, v8

    move v6, v4

    .line 110
    :goto_68
    if-lez v2, :cond_79

    add-int/lit8 v0, v0, -0x1

    move v4, v0

    .line 111
    :goto_6d
    add-int/lit8 v0, v2, 0x1

    shl-int/lit8 v6, v6, 0x10

    or-int/2addr v4, v6

    aput v4, v5, v2

    move v2, v0

    move v0, p0

    .line 113
    goto :goto_43

    :cond_77
    move v3, v1

    .line 104
    goto :goto_64

    :cond_79
    move v4, v0

    .line 110
    goto :goto_6d

    .line 116
    :cond_7b
    array-length v0, v5

    if-le v0, v2, :cond_83

    .line 118
    invoke-static {v5, v2}, Lorg/spongycastle/math/ec/WNafUtil;->trim([II)[I

    move-result-object v0

    goto :goto_9

    :cond_83
    move-object v0, v5

    goto :goto_9

    :cond_85
    move v6, v4

    goto :goto_68
.end method

.method public static generateJSF(Ljava/math/BigInteger;Ljava/math/BigInteger;)[B
    .registers 15

    .prologue
    .line 126
    invoke-virtual {p0}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v1

    invoke-static {v0, v1}, Ljava/lang/Math;->max(II)I

    move-result v0

    add-int/lit8 v10, v0, 0x1

    .line 127
    new-array v3, v10, [B

    .line 130
    const/4 v1, 0x0

    const/4 v5, 0x0

    const/4 v4, 0x0

    .line 132
    const/4 v0, 0x0

    move v8, v0

    move v9, v1

    move-object v2, p0

    move v0, v4

    move-object v1, p1

    move v4, v5

    .line 133
    :goto_1a
    or-int v5, v4, v0

    if-nez v5, :cond_2a

    invoke-virtual {v2}, Ljava/math/BigInteger;->bitLength()I

    move-result v5

    if-gt v5, v8, :cond_2a

    invoke-virtual {v1}, Ljava/math/BigInteger;->bitLength()I

    move-result v5

    if-le v5, v8, :cond_93

    .line 135
    :cond_2a
    invoke-virtual {v2}, Ljava/math/BigInteger;->intValue()I

    move-result v5

    ushr-int/2addr v5, v8

    add-int/2addr v5, v4

    and-int/lit8 v6, v5, 0x7

    invoke-virtual {v1}, Ljava/math/BigInteger;->intValue()I

    move-result v5

    ushr-int/2addr v5, v8

    add-int/2addr v5, v0

    and-int/lit8 v11, v5, 0x7

    .line 137
    and-int/lit8 v5, v6, 0x1

    .line 138
    if-eqz v5, :cond_a2

    .line 140
    and-int/lit8 v7, v6, 0x2

    sub-int/2addr v5, v7

    .line 141
    add-int v7, v6, v5

    const/4 v12, 0x4

    if-ne v7, v12, :cond_a2

    and-int/lit8 v7, v11, 0x3

    const/4 v12, 0x2

    if-ne v7, v12, :cond_a2

    .line 143
    neg-int v5, v5

    move v7, v5

    .line 147
    :goto_4d
    and-int/lit8 v5, v11, 0x1

    .line 148
    if-eqz v5, :cond_a0

    .line 150
    and-int/lit8 v12, v11, 0x2

    sub-int/2addr v5, v12

    .line 151
    add-int/2addr v11, v5

    const/4 v12, 0x4

    if-ne v11, v12, :cond_a0

    and-int/lit8 v6, v6, 0x3

    const/4 v11, 0x2

    if-ne v6, v11, :cond_a0

    .line 153
    neg-int v5, v5

    move v6, v5

    .line 157
    :goto_5f
    shl-int/lit8 v5, v4, 0x1

    add-int/lit8 v11, v7, 0x1

    if-ne v5, v11, :cond_9e

    .line 159
    xor-int/lit8 v4, v4, 0x1

    move v5, v4

    .line 161
    :goto_68
    shl-int/lit8 v4, v0, 0x1

    add-int/lit8 v11, v6, 0x1

    if-ne v4, v11, :cond_9c

    .line 163
    xor-int/lit8 v0, v0, 0x1

    move v4, v0

    .line 166
    :goto_71
    add-int/lit8 v0, v8, 0x1

    const/16 v8, 0x1e

    if-ne v0, v8, :cond_84

    .line 168
    const/4 v0, 0x0

    .line 169
    const/16 v8, 0x1e

    invoke-virtual {v2, v8}, Ljava/math/BigInteger;->shiftRight(I)Ljava/math/BigInteger;

    move-result-object v2

    .line 170
    const/16 v8, 0x1e

    invoke-virtual {v1, v8}, Ljava/math/BigInteger;->shiftRight(I)Ljava/math/BigInteger;

    move-result-object v1

    .line 173
    :cond_84
    add-int/lit8 v8, v9, 0x1

    shl-int/lit8 v7, v7, 0x4

    and-int/lit8 v6, v6, 0xf

    or-int/2addr v6, v7

    int-to-byte v6, v6

    aput-byte v6, v3, v9

    move v9, v8

    move v8, v0

    move v0, v4

    move v4, v5

    .line 174
    goto :goto_1a

    .line 177
    :cond_93
    if-le v10, v9, :cond_9a

    .line 179
    invoke-static {v3, v9}, Lorg/spongycastle/math/ec/WNafUtil;->trim([BI)[B

    move-result-object v0

    .line 182
    :goto_99
    return-object v0

    :cond_9a
    move-object v0, v3

    goto :goto_99

    :cond_9c
    move v4, v0

    goto :goto_71

    :cond_9e
    move v5, v4

    goto :goto_68

    :cond_a0
    move v6, v5

    goto :goto_5f

    :cond_a2
    move v7, v5

    goto :goto_4d
.end method

.method public static generateNaf(Ljava/math/BigInteger;)[B
    .registers 8

    .prologue
    const/4 v1, 0x1

    .line 187
    invoke-virtual {p0}, Ljava/math/BigInteger;->signum()I

    move-result v0

    if-nez v0, :cond_a

    .line 189
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_BYTES:[B

    .line 210
    :goto_9
    return-object v0

    .line 192
    :cond_a
    invoke-virtual {p0, v1}, Ljava/math/BigInteger;->shiftLeft(I)Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 194
    invoke-virtual {v0}, Ljava/math/BigInteger;->bitLength()I

    move-result v2

    add-int/lit8 v4, v2, -0x1

    .line 195
    new-array v3, v4, [B

    .line 197
    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->xor(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v5

    move v2, v1

    .line 199
    :goto_1f
    if-ge v2, v4, :cond_3a

    .line 201
    invoke-virtual {v5, v2}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v0

    if-eqz v0, :cond_40

    .line 203
    add-int/lit8 v6, v2, -0x1

    invoke-virtual {p0, v2}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v0

    if-eqz v0, :cond_38

    const/4 v0, -0x1

    :goto_30
    int-to-byte v0, v0

    aput-byte v0, v3, v6

    .line 204
    add-int/lit8 v0, v2, 0x1

    .line 199
    :goto_35
    add-int/lit8 v2, v0, 0x1

    goto :goto_1f

    :cond_38
    move v0, v1

    .line 203
    goto :goto_30

    .line 208
    :cond_3a
    add-int/lit8 v0, v4, -0x1

    aput-byte v1, v3, v0

    move-object v0, v3

    .line 210
    goto :goto_9

    :cond_40
    move v0, v2

    goto :goto_35
.end method

.method public static generateWindowNaf(ILjava/math/BigInteger;)[B
    .registers 12

    .prologue
    const/4 v0, 0x2

    const/4 v6, 0x1

    const/4 v1, 0x0

    .line 227
    if-ne p0, v0, :cond_a

    .line 229
    invoke-static {p1}, Lorg/spongycastle/math/ec/WNafUtil;->generateNaf(Ljava/math/BigInteger;)[B

    move-result-object v0

    .line 284
    :goto_9
    return-object v0

    .line 232
    :cond_a
    if-lt p0, v0, :cond_10

    const/16 v0, 0x8

    if-le p0, v0, :cond_18

    .line 234
    :cond_10
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "\'width\' must be in the range [2, 8]"

    invoke-direct {v0, v1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 236
    :cond_18
    invoke-virtual {p1}, Ljava/math/BigInteger;->signum()I

    move-result v0

    if-nez v0, :cond_21

    .line 238
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_BYTES:[B

    goto :goto_9

    .line 241
    :cond_21
    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v0

    add-int/lit8 v0, v0, 0x1

    new-array v4, v0, [B

    .line 244
    shl-int v7, v6, p0

    .line 245
    add-int/lit8 v8, v7, -0x1

    .line 246
    ushr-int/lit8 v9, v7, 0x1

    move v0, v1

    move v2, v1

    move v3, v1

    .line 251
    :goto_32
    invoke-virtual {p1}, Ljava/math/BigInteger;->bitLength()I

    move-result v5

    if-gt v0, v5, :cond_65

    .line 253
    invoke-virtual {p1, v0}, Ljava/math/BigInteger;->testBit(I)Z

    move-result v5

    if-ne v5, v3, :cond_41

    .line 255
    add-int/lit8 v0, v0, 0x1

    .line 256
    goto :goto_32

    .line 259
    :cond_41
    invoke-virtual {p1, v0}, Ljava/math/BigInteger;->shiftRight(I)Ljava/math/BigInteger;

    move-result-object p1

    .line 261
    invoke-virtual {p1}, Ljava/math/BigInteger;->intValue()I

    move-result v5

    and-int/2addr v5, v8

    .line 262
    if-eqz v3, :cond_4e

    .line 264
    add-int/lit8 v5, v5, 0x1

    .line 267
    :cond_4e
    and-int v3, v5, v9

    if-eqz v3, :cond_63

    move v3, v6

    .line 268
    :goto_53
    if-eqz v3, :cond_56

    .line 270
    sub-int/2addr v5, v7

    .line 273
    :cond_56
    if-lez v2, :cond_5a

    add-int/lit8 v0, v0, -0x1

    :cond_5a
    add-int/2addr v2, v0

    .line 274
    add-int/lit8 v0, v2, 0x1

    int-to-byte v5, v5

    aput-byte v5, v4, v2

    move v2, v0

    move v0, p0

    .line 276
    goto :goto_32

    :cond_63
    move v3, v1

    .line 267
    goto :goto_53

    .line 279
    :cond_65
    array-length v0, v4

    if-le v0, v2, :cond_6d

    .line 281
    invoke-static {v4, v2}, Lorg/spongycastle/math/ec/WNafUtil;->trim([BI)[B

    move-result-object v0

    goto :goto_9

    :cond_6d
    move-object v0, v4

    goto :goto_9
.end method

.method public static getNafWeight(Ljava/math/BigInteger;)I
    .registers 2

    .prologue
    .line 289
    invoke-virtual {p0}, Ljava/math/BigInteger;->signum()I

    move-result v0

    if-nez v0, :cond_8

    .line 291
    const/4 v0, 0x0

    .line 297
    :goto_7
    return v0

    .line 294
    :cond_8
    const/4 v0, 0x1

    invoke-virtual {p0, v0}, Ljava/math/BigInteger;->shiftLeft(I)Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->add(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 295
    invoke-virtual {v0, p0}, Ljava/math/BigInteger;->xor(Ljava/math/BigInteger;)Ljava/math/BigInteger;

    move-result-object v0

    .line 297
    invoke-virtual {v0}, Ljava/math/BigInteger;->bitCount()I

    move-result v0

    goto :goto_7
.end method

.method public static getWNafPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/WNafPreCompInfo;
    .registers 3

    .prologue
    .line 302
    invoke-virtual {p0}, Lorg/spongycastle/math/ec/ECPoint;->getCurve()Lorg/spongycastle/math/ec/ECCurve;

    move-result-object v0

    const-string v1, "bc_wnaf"

    invoke-virtual {v0, p0, v1}, Lorg/spongycastle/math/ec/ECCurve;->getPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;Ljava/lang/String;)Lorg/spongycastle/math/ec/PreCompInfo;

    move-result-object v0

    invoke-static {v0}, Lorg/spongycastle/math/ec/WNafUtil;->getWNafPreCompInfo(Lorg/spongycastle/math/ec/PreCompInfo;)Lorg/spongycastle/math/ec/WNafPreCompInfo;

    move-result-object v0

    return-object v0
.end method

.method public static getWNafPreCompInfo(Lorg/spongycastle/math/ec/PreCompInfo;)Lorg/spongycastle/math/ec/WNafPreCompInfo;
    .registers 2

    .prologue
    .line 307
    if-eqz p0, :cond_9

    instance-of v0, p0, Lorg/spongycastle/math/ec/WNafPreCompInfo;

    if-eqz v0, :cond_9

    .line 309
    check-cast p0, Lorg/spongycastle/math/ec/WNafPreCompInfo;

    .line 312
    :goto_8
    return-object p0

    :cond_9
    new-instance p0, Lorg/spongycastle/math/ec/WNafPreCompInfo;

    invoke-direct {p0}, Lorg/spongycastle/math/ec/WNafPreCompInfo;-><init>()V

    goto :goto_8
.end method

.method public static getWindowSize(I)I
    .registers 2

    .prologue
    .line 323
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->DEFAULT_WINDOW_SIZE_CUTOFFS:[I

    invoke-static {p0, v0}, Lorg/spongycastle/math/ec/WNafUtil;->getWindowSize(I[I)I

    move-result v0

    return v0
.end method

.method public static getWindowSize(I[I)I
    .registers 4

    .prologue
    .line 335
    const/4 v0, 0x0

    .line 336
    :goto_1
    array-length v1, p1

    if-ge v0, v1, :cond_b

    .line 338
    aget v1, p1, v0

    if-lt p0, v1, :cond_b

    .line 336
    add-int/lit8 v0, v0, 0x1

    goto :goto_1

    .line 343
    :cond_b
    add-int/lit8 v0, v0, 0x2

    return v0
.end method

.method public static mapPointWithPrecomp(Lorg/spongycastle/math/ec/ECPoint;IZLorg/spongycastle/math/ec/ECPointMap;)Lorg/spongycastle/math/ec/ECPoint;
    .registers 12

    .prologue
    const/4 v1, 0x0

    .line 349
    invoke-virtual {p0}, Lorg/spongycastle/math/ec/ECPoint;->getCurve()Lorg/spongycastle/math/ec/ECCurve;

    move-result-object v2

    .line 350
    invoke-static {p0, p1, p2}, Lorg/spongycastle/math/ec/WNafUtil;->precompute(Lorg/spongycastle/math/ec/ECPoint;IZ)Lorg/spongycastle/math/ec/WNafPreCompInfo;

    move-result-object v0

    .line 352
    invoke-interface {p3, p0}, Lorg/spongycastle/math/ec/ECPointMap;->map(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    .line 353
    const-string v4, "bc_wnaf"

    invoke-virtual {v2, v3, v4}, Lorg/spongycastle/math/ec/ECCurve;->getPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;Ljava/lang/String;)Lorg/spongycastle/math/ec/PreCompInfo;

    move-result-object v4

    invoke-static {v4}, Lorg/spongycastle/math/ec/WNafUtil;->getWNafPreCompInfo(Lorg/spongycastle/math/ec/PreCompInfo;)Lorg/spongycastle/math/ec/WNafPreCompInfo;

    move-result-object v4

    .line 355
    invoke-virtual {v0}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->getTwice()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v5

    .line 356
    if-eqz v5, :cond_24

    .line 358
    invoke-interface {p3, v5}, Lorg/spongycastle/math/ec/ECPointMap;->map(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v5

    .line 359
    invoke-virtual {v4, v5}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setTwice(Lorg/spongycastle/math/ec/ECPoint;)V

    .line 362
    :cond_24
    invoke-virtual {v0}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->getPreComp()[Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v5

    .line 363
    array-length v0, v5

    new-array v6, v0, [Lorg/spongycastle/math/ec/ECPoint;

    move v0, v1

    .line 364
    :goto_2c
    array-length v7, v5

    if-ge v0, v7, :cond_3a

    .line 366
    aget-object v7, v5, v0

    invoke-interface {p3, v7}, Lorg/spongycastle/math/ec/ECPointMap;->map(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v7

    aput-object v7, v6, v0

    .line 364
    add-int/lit8 v0, v0, 0x1

    goto :goto_2c

    .line 368
    :cond_3a
    invoke-virtual {v4, v6}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setPreComp([Lorg/spongycastle/math/ec/ECPoint;)V

    .line 370
    if-eqz p2, :cond_53

    .line 372
    array-length v0, v6

    new-array v0, v0, [Lorg/spongycastle/math/ec/ECPoint;

    .line 373
    :goto_42
    array-length v5, v0

    if-ge v1, v5, :cond_50

    .line 375
    aget-object v5, v6, v1

    invoke-virtual {v5}, Lorg/spongycastle/math/ec/ECPoint;->negate()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v5

    aput-object v5, v0, v1

    .line 373
    add-int/lit8 v1, v1, 0x1

    goto :goto_42

    .line 377
    :cond_50
    invoke-virtual {v4, v0}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setPreCompNeg([Lorg/spongycastle/math/ec/ECPoint;)V

    .line 380
    :cond_53
    const-string v0, "bc_wnaf"

    invoke-virtual {v2, v3, v0, v4}, Lorg/spongycastle/math/ec/ECCurve;->setPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;Ljava/lang/String;Lorg/spongycastle/math/ec/PreCompInfo;)V

    .line 382
    return-object v3
.end method

.method public static precompute(Lorg/spongycastle/math/ec/ECPoint;IZ)Lorg/spongycastle/math/ec/WNafPreCompInfo;
    .registers 16

    .prologue
    const/4 v3, 0x1

    const/4 v2, 0x0

    .line 387
    invoke-virtual {p0}, Lorg/spongycastle/math/ec/ECPoint;->getCurve()Lorg/spongycastle/math/ec/ECCurve;

    move-result-object v8

    .line 388
    const-string v0, "bc_wnaf"

    invoke-virtual {v8, p0, v0}, Lorg/spongycastle/math/ec/ECCurve;->getPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;Ljava/lang/String;)Lorg/spongycastle/math/ec/PreCompInfo;

    move-result-object v0

    invoke-static {v0}, Lorg/spongycastle/math/ec/WNafUtil;->getWNafPreCompInfo(Lorg/spongycastle/math/ec/PreCompInfo;)Lorg/spongycastle/math/ec/WNafPreCompInfo;

    move-result-object v9

    .line 390
    add-int/lit8 v0, p1, -0x2

    invoke-static {v2, v0}, Ljava/lang/Math;->max(II)I

    move-result v0

    shl-int v10, v3, v0

    .line 392
    invoke-virtual {v9}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->getPreComp()[Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    .line 393
    if-nez v0, :cond_4d

    .line 395
    sget-object v0, Lorg/spongycastle/math/ec/WNafUtil;->EMPTY_POINTS:[Lorg/spongycastle/math/ec/ECPoint;

    move v7, v2

    .line 402
    :goto_21
    if-ge v7, v10, :cond_30

    .line 404
    invoke-static {v0, v10}, Lorg/spongycastle/math/ec/WNafUtil;->resizeTable([Lorg/spongycastle/math/ec/ECPoint;I)[Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v1

    .line 406
    if-ne v10, v3, :cond_4f

    .line 408
    invoke-virtual {p0}, Lorg/spongycastle/math/ec/ECPoint;->normalize()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    aput-object v0, v1, v2

    move-object v0, v1

    .line 485
    :cond_30
    :goto_30
    invoke-virtual {v9, v0}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setPreComp([Lorg/spongycastle/math/ec/ECPoint;)V

    .line 487
    if-eqz p2, :cond_d6

    .line 489
    invoke-virtual {v9}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->getPreCompNeg()[Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    .line 492
    if-nez v3, :cond_ca

    .line 495
    new-array v1, v10, [Lorg/spongycastle/math/ec/ECPoint;

    move v12, v2

    move-object v2, v1

    move v1, v12

    .line 506
    :goto_40
    if-ge v1, v10, :cond_d3

    .line 508
    aget-object v3, v0, v1

    invoke-virtual {v3}, Lorg/spongycastle/math/ec/ECPoint;->negate()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    aput-object v3, v2, v1

    .line 509
    add-int/lit8 v1, v1, 0x1

    goto :goto_40

    .line 399
    :cond_4d
    array-length v7, v0

    goto :goto_21

    .line 413
    :cond_4f
    if-nez v7, :cond_df

    .line 415
    aput-object p0, v1, v2

    move v6, v3

    .line 419
    :goto_54
    const/4 v0, 0x0

    .line 421
    const/4 v4, 0x2

    if-ne v10, v4, :cond_65

    .line 423
    invoke-virtual {p0}, Lorg/spongycastle/math/ec/ECPoint;->threeTimes()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v4

    aput-object v4, v1, v3

    .line 481
    :cond_5e
    sub-int v3, v10, v7

    invoke-virtual {v8, v1, v7, v3, v0}, Lorg/spongycastle/math/ec/ECCurve;->normalizeAll([Lorg/spongycastle/math/ec/ECPoint;IILorg/spongycastle/math/ec/ECFieldElement;)V

    move-object v0, v1

    goto :goto_30

    .line 427
    :cond_65
    invoke-virtual {v9}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->getTwice()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v4

    add-int/lit8 v3, v6, -0x1

    aget-object v3, v1, v3

    .line 428
    if-nez v4, :cond_8d

    .line 430
    aget-object v4, v1, v2

    invoke-virtual {v4}, Lorg/spongycastle/math/ec/ECPoint;->twice()Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v4

    .line 431
    invoke-virtual {v9, v4}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setTwice(Lorg/spongycastle/math/ec/ECPoint;)V

    .line 443
    invoke-static {v8}, Lorg/spongycastle/math/ec/ECAlgorithms;->isFpCurve(Lorg/spongycastle/math/ec/ECCurve;)Z

    move-result v5

    if-eqz v5, :cond_8d

    invoke-virtual {v8}, Lorg/spongycastle/math/ec/ECCurve;->getFieldSize()I

    move-result v5

    const/16 v11, 0x40

    if-lt v5, v11, :cond_8d

    .line 445
    invoke-virtual {v8}, Lorg/spongycastle/math/ec/ECCurve;->getCoordinateSystem()I

    move-result v5

    packed-switch v5, :pswitch_data_e2

    :cond_8d
    move v5, v6

    .line 468
    :goto_8e
    if-ge v5, v10, :cond_5e

    .line 474
    add-int/lit8 v6, v5, 0x1

    invoke-virtual {v3, v4}, Lorg/spongycastle/math/ec/ECPoint;->add(Lorg/spongycastle/math/ec/ECPoint;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v3

    aput-object v3, v1, v5

    move v5, v6

    goto :goto_8e

    .line 451
    :pswitch_9a
    invoke-virtual {v4, v2}, Lorg/spongycastle/math/ec/ECPoint;->getZCoord(I)Lorg/spongycastle/math/ec/ECFieldElement;

    move-result-object v5

    .line 452
    invoke-virtual {v4}, Lorg/spongycastle/math/ec/ECPoint;->getXCoord()Lorg/spongycastle/math/ec/ECFieldElement;

    move-result-object v0

    invoke-virtual {v0}, Lorg/spongycastle/math/ec/ECFieldElement;->toBigInteger()Ljava/math/BigInteger;

    move-result-object v0

    invoke-virtual {v4}, Lorg/spongycastle/math/ec/ECPoint;->getYCoord()Lorg/spongycastle/math/ec/ECFieldElement;

    move-result-object v4

    .line 453
    invoke-virtual {v4}, Lorg/spongycastle/math/ec/ECFieldElement;->toBigInteger()Ljava/math/BigInteger;

    move-result-object v4

    .line 452
    invoke-virtual {v8, v0, v4}, Lorg/spongycastle/math/ec/ECCurve;->createPoint(Ljava/math/BigInteger;Ljava/math/BigInteger;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v4

    .line 455
    invoke-virtual {v5}, Lorg/spongycastle/math/ec/ECFieldElement;->square()Lorg/spongycastle/math/ec/ECFieldElement;

    move-result-object v0

    invoke-virtual {v0, v5}, Lorg/spongycastle/math/ec/ECFieldElement;->multiply(Lorg/spongycastle/math/ec/ECFieldElement;)Lorg/spongycastle/math/ec/ECFieldElement;

    move-result-object v11

    .line 456
    invoke-virtual {v3, v0}, Lorg/spongycastle/math/ec/ECPoint;->scaleX(Lorg/spongycastle/math/ec/ECFieldElement;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    invoke-virtual {v0, v11}, Lorg/spongycastle/math/ec/ECPoint;->scaleY(Lorg/spongycastle/math/ec/ECFieldElement;)Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v0

    .line 458
    if-nez v7, :cond_c6

    .line 460
    aput-object v0, v1, v2

    :cond_c6
    move-object v3, v0

    move-object v0, v5

    move v5, v6

    goto :goto_8e

    .line 499
    :cond_ca
    array-length v1, v3

    .line 500
    if-ge v1, v10, :cond_dc

    .line 502
    invoke-static {v3, v10}, Lorg/spongycastle/math/ec/WNafUtil;->resizeTable([Lorg/spongycastle/math/ec/ECPoint;I)[Lorg/spongycastle/math/ec/ECPoint;

    move-result-object v2

    goto/16 :goto_40

    .line 512
    :cond_d3
    invoke-virtual {v9, v2}, Lorg/spongycastle/math/ec/WNafPreCompInfo;->setPreCompNeg([Lorg/spongycastle/math/ec/ECPoint;)V

    .line 515
    :cond_d6
    const-string v0, "bc_wnaf"

    invoke-virtual {v8, p0, v0, v9}, Lorg/spongycastle/math/ec/ECCurve;->setPreCompInfo(Lorg/spongycastle/math/ec/ECPoint;Ljava/lang/String;Lorg/spongycastle/math/ec/PreCompInfo;)V

    .line 517
    return-object v9

    :cond_dc
    move-object v2, v3

    goto/16 :goto_40

    :cond_df
    move v6, v7

    goto/16 :goto_54

    .line 445
    :pswitch_data_e2
    .packed-switch 0x2
        :pswitch_9a
        :pswitch_9a
        :pswitch_9a
    .end packed-switch
.end method

.method private static resizeTable([Lorg/spongycastle/math/ec/ECPoint;I)[Lorg/spongycastle/math/ec/ECPoint;
    .registers 5

    .prologue
    const/4 v2, 0x0

    .line 536
    new-array v0, p1, [Lorg/spongycastle/math/ec/ECPoint;

    .line 537
    array-length v1, p0

    invoke-static {p0, v2, v0, v2, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 538
    return-object v0
.end method

.method private static trim([BI)[B
    .registers 4

    .prologue
    const/4 v1, 0x0

    .line 522
    new-array v0, p1, [B

    .line 523
    invoke-static {p0, v1, v0, v1, p1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 524
    return-object v0
.end method

.method private static trim([II)[I
    .registers 4

    .prologue
    const/4 v1, 0x0

    .line 529
    new-array v0, p1, [I

    .line 530
    invoke-static {p0, v1, v0, v1, p1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 531
    return-object v0
.end method