ComputeInField.smali

.class public Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;
.super Ljava/lang/Object;
.source "ComputeInField.java"


# instance fields
.field private A:[[S

.field x:[S


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

    .prologue
    .line 22
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 23
    return-void
.end method

.method private computeZerosAbove()V
    .registers 9

    .prologue
    .line 242
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

    add-int/lit8 v1, v0, -0x1

    :goto_5
    if-lez v1, :cond_56

    .line 244
    add-int/lit8 v0, v1, -0x1

    move v2, v0

    :goto_a
    if-ltz v2, :cond_53

    .line 246
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v0, v0, v2

    aget-short v3, v0, v1

    .line 247
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v0, v0, v1

    aget-short v0, v0, v1

    invoke-static {v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->invElem(S)S

    move-result v4

    .line 248
    if-nez v4, :cond_26

    .line 250
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "The matrix is not invertible"

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

    throw v0

    :cond_26
    move v0, v1

    .line 252
    :goto_27
    iget-object v5, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v5, v5

    mul-int/lit8 v5, v5, 0x2

    if-ge v0, v5, :cond_4f

    .line 255
    iget-object v5, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v5, v5, v1

    aget-short v5, v5, v0

    invoke-static {v5, v4}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v5

    .line 257
    invoke-static {v3, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v5

    .line 259
    iget-object v6, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v6, v6, v2

    iget-object v7, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v7, v7, v2

    aget-short v7, v7, v0

    invoke-static {v7, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v5

    aput-short v5, v6, v0

    .line 252
    add-int/lit8 v0, v0, 0x1

    goto :goto_27

    .line 244
    :cond_4f
    add-int/lit8 v0, v2, -0x1

    move v2, v0

    goto :goto_a

    .line 242
    :cond_53
    add-int/lit8 v1, v1, -0x1

    goto :goto_5

    .line 263
    :cond_56
    return-void
.end method

.method private computeZerosUnder(Z)V
    .registers 11

    .prologue
    .line 190
    if-eqz p1, :cond_30

    .line 192
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

    mul-int/lit8 v0, v0, 0x2

    .line 201
    :goto_7
    const/4 v1, 0x0

    :goto_8
    iget-object v2, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v2, v2

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

    if-ge v1, v2, :cond_60

    .line 203
    add-int/lit8 v2, v1, 0x1

    :goto_11
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v3, v3

    if-ge v2, v3, :cond_5d

    .line 205
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v2

    aget-short v4, v3, v1

    .line 206
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v1

    aget-short v3, v3, v1

    invoke-static {v3}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->invElem(S)S

    move-result v5

    .line 210
    if-nez v5, :cond_36

    .line 212
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Matrix not invertible! We have to choose another one!"

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

    throw v0

    .line 197
    :cond_30
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

    add-int/lit8 v0, v0, 0x1

    goto :goto_7

    :cond_36
    move v3, v1

    .line 215
    :goto_37
    if-ge v3, v0, :cond_5a

    .line 218
    iget-object v6, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v6, v6, v1

    aget-short v6, v6, v3

    invoke-static {v6, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v6

    .line 220
    invoke-static {v4, v6}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v6

    .line 222
    iget-object v7, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v7, v7, v2

    iget-object v8, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v8, v8, v2

    aget-short v8, v8, v3

    invoke-static {v8, v6}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v6

    aput-short v6, v7, v3

    .line 215
    add-int/lit8 v3, v3, 0x1

    goto :goto_37

    .line 203
    :cond_5a
    add-int/lit8 v2, v2, 0x1

    goto :goto_11

    .line 201
    :cond_5d
    add-int/lit8 v1, v1, 0x1

    goto :goto_8

    .line 226
    :cond_60
    return-void
.end method

.method private substitute()V
    .registers 6

    .prologue
    .line 284
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v1, v1

    add-int/lit8 v1, v1, -0x1

    aget-object v0, v0, v1

    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v1, v1

    add-int/lit8 v1, v1, -0x1

    aget-short v0, v0, v1

    invoke-static {v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->invElem(S)S

    move-result v0

    .line 285
    if-nez v0, :cond_1e

    .line 287
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "The equation system is not solvable"

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

    throw v0

    .line 291
    :cond_1e
    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->x:[S

    iget-object v2, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v2, v2

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

    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v4, v4

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

    aget-object v3, v3, v4

    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v4, v4

    aget-short v3, v3, v4

    invoke-static {v3, v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v0

    aput-short v0, v1, v2

    .line 292
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

    add-int/lit8 v0, v0, -0x2

    move v2, v0

    :goto_3f
    if-ltz v2, :cond_86

    .line 294
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v0, v0, v2

    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v1, v1

    aget-short v1, v0, v1

    .line 295
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

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

    :goto_4f
    if-le v0, v2, :cond_66

    .line 297
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v2

    aget-short v3, v3, v0

    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->x:[S

    aget-short v4, v4, v0

    invoke-static {v3, v4}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v3

    .line 298
    invoke-static {v1, v3}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v1

    .line 295
    add-int/lit8 v0, v0, -0x1

    goto :goto_4f

    .line 301
    :cond_66
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v0, v0, v2

    aget-short v0, v0, v2

    invoke-static {v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->invElem(S)S

    move-result v0

    .line 302
    if-nez v0, :cond_7a

    .line 304
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Not solvable equation system"

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

    throw v0

    .line 306
    :cond_7a
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->x:[S

    invoke-static {v1, v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v0

    aput-short v0, v3, v2

    .line 292
    add-int/lit8 v0, v2, -0x1

    move v2, v0

    goto :goto_3f

    .line 308
    :cond_86
    return-void
.end method


# virtual methods
.method public addSquareMatrix([[S[[S)[[S
    .registers 10

    .prologue
    const/4 v2, 0x0

    .line 474
    array-length v0, p1

    array-length v1, p2

    if-ne v0, v1, :cond_d

    aget-object v0, p1, v2

    array-length v0, v0

    aget-object v1, p2, v2

    array-length v1, v1

    if-eq v0, v1, :cond_15

    .line 476
    :cond_d
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Addition is not possible!"

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

    throw v0

    .line 479
    :cond_15
    array-length v0, p1

    array-length v1, p1

    filled-new-array {v0, v1}, [I

    move-result-object v0

    sget-object v1, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v1, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    move v1, v2

    .line 480
    :goto_24
    array-length v3, p1

    if-ge v1, v3, :cond_41

    move v3, v2

    .line 482
    :goto_28
    array-length v4, p2

    if-ge v3, v4, :cond_3e

    .line 484
    aget-object v4, v0, v1

    aget-object v5, p1, v1

    aget-short v5, v5, v3

    aget-object v6, p2, v1

    aget-short v6, v6, v3

    invoke-static {v5, v6}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v5

    aput-short v5, v4, v3

    .line 482
    add-int/lit8 v3, v3, 0x1

    goto :goto_28

    .line 480
    :cond_3e
    add-int/lit8 v1, v1, 0x1

    goto :goto_24

    .line 487
    :cond_41
    return-object v0
.end method

.method public addVect([S[S)[S
    .registers 7

    .prologue
    .line 388
    array-length v0, p1

    array-length v1, p2

    if-eq v0, v1, :cond_c

    .line 390
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Multiplication is not possible!"

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

    throw v0

    .line 392
    :cond_c
    array-length v0, p1

    new-array v1, v0, [S

    .line 393
    const/4 v0, 0x0

    :goto_10
    array-length v2, v1

    if-ge v0, v2, :cond_20

    .line 395
    aget-short v2, p1, v0

    aget-short v3, p2, v0

    invoke-static {v2, v3}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v2

    aput-short v2, v1, v0

    .line 393
    add-int/lit8 v0, v0, 0x1

    goto :goto_10

    .line 397
    :cond_20
    return-object v1
.end method

.method public inverse([[S)[[S
    .registers 8

    .prologue
    const/4 v1, 0x0

    .line 106
    :try_start_1
    array-length v0, p1

    array-length v2, p1

    mul-int/lit8 v2, v2, 0x2

    filled-new-array {v0, v2}, [I

    move-result-object v0

    sget-object v2, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v2, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    iput-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    .line 107
    array-length v0, p1

    const/4 v2, 0x0

    aget-object v2, p1, v2

    array-length v2, v2

    if-eq v0, v2, :cond_25

    .line 109
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "The matrix is not invertible. Please choose another one!"

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

    throw v0

    .line 161
    :catch_22
    move-exception v0

    const/4 v0, 0x0

    :cond_24
    return-object v0

    :cond_25
    move v2, v1

    .line 114
    :goto_26
    array-length v0, p1

    if-ge v2, v0, :cond_59

    move v0, v1

    .line 116
    :goto_2a
    array-length v3, p1

    if-ge v0, v3, :cond_3a

    .line 119
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v2

    aget-object v4, p1, v2

    aget-short v4, v4, v0

    aput-short v4, v3, v0

    .line 116
    add-int/lit8 v0, v0, 0x1

    goto :goto_2a

    .line 122
    :cond_3a
    array-length v0, p1

    :goto_3b
    array-length v3, p1

    mul-int/lit8 v3, v3, 0x2

    if-ge v0, v3, :cond_4a

    .line 124
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v2

    const/4 v4, 0x0

    aput-short v4, v3, v0

    .line 122
    add-int/lit8 v0, v0, 0x1

    goto :goto_3b

    .line 126
    :cond_4a
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v0, v0, v2

    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v3, v3

    add-int/2addr v3, v2

    const/4 v4, 0x1

    aput-short v4, v0, v3

    .line 114
    add-int/lit8 v0, v2, 0x1

    move v2, v0

    goto :goto_26

    .line 131
    :cond_59
    const/4 v0, 0x1

    invoke-direct {p0, v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->computeZerosUnder(Z)V

    move v0, v1

    .line 134
    :goto_5e
    iget-object v2, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v2, v2

    if-ge v0, v2, :cond_8b

    .line 136
    iget-object v2, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v2, v2, v0

    aget-short v2, v2, v0

    invoke-static {v2}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->invElem(S)S

    move-result v3

    move v2, v0

    .line 137
    :goto_6e
    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v4, v4

    mul-int/lit8 v4, v4, 0x2

    if-ge v2, v4, :cond_88

    .line 139
    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v4, v4, v0

    iget-object v5, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v5, v5, v0

    aget-short v5, v5, v2

    invoke-static {v5, v3}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v5

    aput-short v5, v4, v2

    .line 137
    add-int/lit8 v2, v2, 0x1

    goto :goto_6e

    .line 134
    :cond_88
    add-int/lit8 v0, v0, 0x1

    goto :goto_5e

    .line 144
    :cond_8b
    invoke-direct {p0}, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->computeZerosAbove()V

    .line 147
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v0, v0

    iget-object v2, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v2, v2

    filled-new-array {v0, v2}, [I

    move-result-object v0

    sget-object v2, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v2, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    move v2, v1

    .line 148
    :goto_a1
    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v1, v1

    if-ge v2, v1, :cond_24

    .line 150
    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v1, v1

    :goto_a9
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v3, v3

    mul-int/lit8 v3, v3, 0x2

    if-ge v1, v3, :cond_c2

    .line 152
    aget-object v3, v0, v2

    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    array-length v4, v4

    sub-int v4, v1, v4

    iget-object v5, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v5, v5, v2

    aget-short v5, v5, v1

    aput-short v5, v3, v4
    :try_end_bf
    .catch Ljava/lang/RuntimeException; {:try_start_1 .. :try_end_bf} :catch_22

    .line 150
    add-int/lit8 v1, v1, 0x1

    goto :goto_a9

    .line 148
    :cond_c2
    add-int/lit8 v1, v2, 0x1

    move v2, v1

    goto :goto_a1
.end method

.method public multMatrix(S[[S)[[S
    .registers 9

    .prologue
    const/4 v2, 0x0

    .line 452
    array-length v0, p2

    aget-object v1, p2, v2

    array-length v1, v1

    filled-new-array {v0, v1}, [I

    move-result-object v0

    sget-object v1, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v1, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    move v1, v2

    .line 453
    :goto_12
    array-length v3, p2

    if-ge v1, v3, :cond_2d

    move v3, v2

    .line 455
    :goto_16
    aget-object v4, p2, v2

    array-length v4, v4

    if-ge v3, v4, :cond_2a

    .line 457
    aget-object v4, v0, v1

    aget-object v5, p2, v1

    aget-short v5, v5, v3

    invoke-static {p1, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v5

    aput-short v5, v4, v3

    .line 455
    add-int/lit8 v3, v3, 0x1

    goto :goto_16

    .line 453
    :cond_2a
    add-int/lit8 v1, v1, 0x1

    goto :goto_12

    .line 460
    :cond_2d
    return-object v0
.end method

.method public multVect(S[S)[S
    .registers 6

    .prologue
    .line 435
    array-length v0, p2

    new-array v1, v0, [S

    .line 436
    const/4 v0, 0x0

    :goto_4
    array-length v2, v1

    if-ge v0, v2, :cond_12

    .line 438
    aget-short v2, p2, v0

    invoke-static {p1, v2}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v2

    aput-short v2, v1, v0

    .line 436
    add-int/lit8 v0, v0, 0x1

    goto :goto_4

    .line 440
    :cond_12
    return-object v1
.end method

.method public multVects([S[S)[[S
    .registers 10

    .prologue
    const/4 v2, 0x0

    .line 411
    array-length v0, p1

    array-length v1, p2

    if-eq v0, v1, :cond_d

    .line 413
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Multiplication is not possible!"

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

    throw v0

    .line 415
    :cond_d
    array-length v0, p1

    array-length v1, p2

    filled-new-array {v0, v1}, [I

    move-result-object v0

    sget-object v1, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v1, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    move v1, v2

    .line 416
    :goto_1c
    array-length v3, p1

    if-ge v1, v3, :cond_35

    move v3, v2

    .line 418
    :goto_20
    array-length v4, p2

    if-ge v3, v4, :cond_32

    .line 420
    aget-object v4, v0, v1

    aget-short v5, p1, v1

    aget-short v6, p2, v3

    invoke-static {v5, v6}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v5

    aput-short v5, v4, v3

    .line 418
    add-int/lit8 v3, v3, 0x1

    goto :goto_20

    .line 416
    :cond_32
    add-int/lit8 v1, v1, 0x1

    goto :goto_1c

    .line 423
    :cond_35
    return-object v0
.end method

.method public multiplyMatrix([[S[S)[S
    .registers 9

    .prologue
    const/4 v1, 0x0

    .line 360
    aget-object v0, p1, v1

    array-length v0, v0

    array-length v2, p2

    if-eq v0, v2, :cond_f

    .line 362
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Multiplication is not possible!"

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

    throw v0

    .line 365
    :cond_f
    array-length v0, p1

    new-array v3, v0, [S

    move v0, v1

    .line 366
    :goto_13
    array-length v2, p1

    if-ge v0, v2, :cond_32

    move v2, v1

    .line 368
    :goto_17
    array-length v4, p2

    if-ge v2, v4, :cond_2f

    .line 370
    aget-object v4, p1, v0

    aget-short v4, v4, v2

    aget-short v5, p2, v2

    invoke-static {v4, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v4

    .line 371
    aget-short v5, v3, v0

    invoke-static {v5, v4}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v4

    aput-short v4, v3, v0

    .line 368
    add-int/lit8 v2, v2, 0x1

    goto :goto_17

    .line 366
    :cond_2f
    add-int/lit8 v0, v0, 0x1

    goto :goto_13

    .line 374
    :cond_32
    return-object v3
.end method

.method public multiplyMatrix([[S[[S)[[S
    .registers 10

    .prologue
    const/4 v1, 0x0

    .line 326
    aget-object v0, p1, v1

    array-length v0, v0

    array-length v2, p2

    if-eq v0, v2, :cond_f

    .line 328
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "Multiplication is not possible!"

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

    throw v0

    .line 331
    :cond_f
    array-length v0, p1

    aget-object v2, p2, v1

    array-length v2, v2

    filled-new-array {v0, v2}, [I

    move-result-object v0

    sget-object v2, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v2, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    iput-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    move v0, v1

    .line 332
    :goto_22
    array-length v2, p1

    if-ge v0, v2, :cond_54

    move v2, v1

    .line 334
    :goto_26
    array-length v3, p2

    if-ge v2, v3, :cond_51

    move v3, v1

    .line 336
    :goto_2a
    aget-object v4, p2, v1

    array-length v4, v4

    if-ge v3, v4, :cond_4e

    .line 338
    aget-object v4, p1, v0

    aget-short v4, v4, v2

    aget-object v5, p2, v2

    aget-short v5, v5, v3

    invoke-static {v4, v5}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->multElem(SS)S

    move-result v4

    .line 339
    iget-object v5, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v5, v5, v0

    iget-object v6, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v6, v6, v0

    aget-short v6, v6, v3

    invoke-static {v6, v4}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v4

    aput-short v4, v5, v3

    .line 336
    add-int/lit8 v3, v3, 0x1

    goto :goto_2a

    .line 334
    :cond_4e
    add-int/lit8 v2, v2, 0x1

    goto :goto_26

    .line 332
    :cond_51
    add-int/lit8 v0, v0, 0x1

    goto :goto_22

    .line 343
    :cond_54
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    return-object v0
.end method

.method public solveEquation([[S[S)[S
    .registers 9

    .prologue
    const/4 v1, 0x0

    .line 43
    :try_start_1
    array-length v0, p1

    array-length v2, p2

    if-eq v0, v2, :cond_10

    .line 45
    new-instance v0, Ljava/lang/RuntimeException;

    const-string v1, "The equation system is not solvable"

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

    throw v0

    .line 84
    :catch_d
    move-exception v0

    const/4 v0, 0x0

    :goto_f
    return-object v0

    .line 54
    :cond_10
    array-length v0, p1

    array-length v2, p1

    add-int/lit8 v2, v2, 0x1

    filled-new-array {v0, v2}, [I

    move-result-object v0

    sget-object v2, Ljava/lang/Short;->TYPE:Ljava/lang/Class;

    invoke-static {v2, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[S

    iput-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    .line 56
    array-length v0, p1

    new-array v0, v0, [S

    iput-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->x:[S

    move v2, v1

    .line 59
    :goto_28
    array-length v0, p1

    if-ge v2, v0, :cond_43

    move v0, v1

    .line 61
    :goto_2c
    const/4 v3, 0x0

    aget-object v3, p1, v3

    array-length v3, v3

    if-ge v0, v3, :cond_3f

    .line 63
    iget-object v3, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v3, v3, v2

    aget-object v4, p1, v2

    aget-short v4, v4, v0

    aput-short v4, v3, v0

    .line 61
    add-int/lit8 v0, v0, 0x1

    goto :goto_2c

    .line 59
    :cond_3f
    add-int/lit8 v0, v2, 0x1

    move v2, v0

    goto :goto_28

    :cond_43
    move v0, v1

    .line 70
    :goto_44
    array-length v1, p2

    if-ge v0, v1, :cond_5e

    .line 72
    iget-object v1, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v1, v1, v0

    array-length v2, p2

    aget-short v3, p2, v0

    iget-object v4, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->A:[[S

    aget-object v4, v4, v0

    array-length v5, p2

    aget-short v4, v4, v5

    invoke-static {v3, v4}, Lorg/spongycastle/pqc/crypto/rainbow/util/GF2Field;->addElem(SS)S

    move-result v3

    aput-short v3, v1, v2

    .line 70
    add-int/lit8 v0, v0, 0x1

    goto :goto_44

    .line 76
    :cond_5e
    const/4 v0, 0x0

    invoke-direct {p0, v0}, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->computeZerosUnder(Z)V

    .line 77
    invoke-direct {p0}, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->substitute()V

    .line 79
    iget-object v0, p0, Lorg/spongycastle/pqc/crypto/rainbow/util/ComputeInField;->x:[S
    :try_end_67
    .catch Ljava/lang/RuntimeException; {:try_start_1 .. :try_end_67} :catch_d

    goto :goto_f
.end method