HC256Engine.smali

.class public Lorg/spongycastle/crypto/engines/HC256Engine;
.super Ljava/lang/Object;
.source "HC256Engine.java"

# interfaces
.implements Lorg/spongycastle/crypto/StreamCipher;


# instance fields
.field private buf:[B

.field private cnt:I

.field private idx:I

.field private initialised:Z

.field private iv:[B

.field private key:[B

.field private p:[I

.field private q:[I


# direct methods
.method public constructor <init>()V
    .registers 4

    .prologue
    const/16 v2, 0x400

    const/4 v1, 0x0

    .line 24
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 27
    new-array v0, v2, [I

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    .line 28
    new-array v0, v2, [I

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    .line 29
    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    .line 182
    const/4 v0, 0x4

    new-array v0, v0, [B

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    .line 183
    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    return-void
.end method

.method private getByte()B
    .registers 5

    .prologue
    .line 187
    iget v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    if-nez v0, :cond_26

    .line 189
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->step()I

    move-result v0

    .line 190
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    const/4 v2, 0x0

    int-to-byte v3, v0

    aput-byte v3, v1, v2

    .line 191
    shr-int/lit8 v0, v0, 0x8

    .line 192
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    const/4 v2, 0x1

    int-to-byte v3, v0

    aput-byte v3, v1, v2

    .line 193
    shr-int/lit8 v0, v0, 0x8

    .line 194
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    const/4 v2, 0x2

    int-to-byte v3, v0

    aput-byte v3, v1, v2

    .line 195
    shr-int/lit8 v0, v0, 0x8

    .line 196
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    const/4 v2, 0x3

    int-to-byte v0, v0

    aput-byte v0, v1, v2

    .line 198
    :cond_26
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->buf:[B

    iget v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    aget-byte v0, v0, v1

    .line 199
    iget v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    add-int/lit8 v1, v1, 0x1

    and-int/lit8 v1, v1, 0x3

    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    .line 200
    return v0
.end method

.method private init()V
    .registers 12

    .prologue
    const/16 v10, 0xa00

    const/16 v9, 0x400

    const/16 v0, 0x10

    const/16 v8, 0x20

    const/4 v1, 0x0

    .line 70
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    array-length v2, v2

    if-eq v2, v8, :cond_1b

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    array-length v2, v2

    if-eq v2, v0, :cond_1b

    .line 72
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "The key must be 128/256 bits long"

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

    throw v0

    .line 76
    :cond_1b
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    array-length v2, v2

    if-ge v2, v0, :cond_28

    .line 78
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "The IV must be at least 128 bits long"

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

    throw v0

    .line 82
    :cond_28
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    array-length v2, v2

    if-eq v2, v8, :cond_41

    .line 84
    new-array v2, v8, [B

    .line 86
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    array-length v4, v4

    invoke-static {v3, v1, v2, v1, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 87
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    array-length v4, v4

    invoke-static {v3, v1, v2, v0, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 89
    iput-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    .line 92
    :cond_41
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    array-length v2, v2

    if-ge v2, v8, :cond_5f

    .line 94
    new-array v2, v8, [B

    .line 96
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    array-length v4, v4

    invoke-static {v3, v1, v2, v1, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 97
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    array-length v4, v4

    iget-object v5, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    array-length v5, v5

    rsub-int/lit8 v5, v5, 0x20

    invoke-static {v3, v1, v2, v4, v5}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 99
    iput-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    .line 102
    :cond_5f
    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->idx:I

    .line 103
    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    .line 105
    new-array v3, v10, [I

    move v2, v1

    .line 107
    :goto_66
    if-ge v2, v8, :cond_7d

    .line 109
    shr-int/lit8 v4, v2, 0x2

    aget v5, v3, v4

    iget-object v6, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    aget-byte v6, v6, v2

    and-int/lit16 v6, v6, 0xff

    and-int/lit8 v7, v2, 0x3

    mul-int/lit8 v7, v7, 0x8

    shl-int/2addr v6, v7

    or-int/2addr v5, v6

    aput v5, v3, v4

    .line 107
    add-int/lit8 v2, v2, 0x1

    goto :goto_66

    :cond_7d
    move v2, v1

    .line 112
    :goto_7e
    if-ge v2, v8, :cond_97

    .line 114
    shr-int/lit8 v4, v2, 0x2

    add-int/lit8 v4, v4, 0x8

    aget v5, v3, v4

    iget-object v6, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    aget-byte v6, v6, v2

    and-int/lit16 v6, v6, 0xff

    and-int/lit8 v7, v2, 0x3

    mul-int/lit8 v7, v7, 0x8

    shl-int/2addr v6, v7

    or-int/2addr v5, v6

    aput v5, v3, v4

    .line 112
    add-int/lit8 v2, v2, 0x1

    goto :goto_7e

    .line 117
    :cond_97
    :goto_97
    if-ge v0, v10, :cond_d1

    .line 119
    add-int/lit8 v2, v0, -0x2

    aget v2, v3, v2

    .line 120
    add-int/lit8 v4, v0, -0xf

    aget v4, v3, v4

    .line 121
    const/16 v5, 0x11

    invoke-static {v2, v5}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v5

    const/16 v6, 0x13

    invoke-static {v2, v6}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v6

    xor-int/2addr v5, v6

    ushr-int/lit8 v2, v2, 0xa

    xor-int/2addr v2, v5

    add-int/lit8 v5, v0, -0x7

    aget v5, v3, v5

    add-int/2addr v2, v5

    const/4 v5, 0x7

    .line 123
    invoke-static {v4, v5}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v5

    const/16 v6, 0x12

    invoke-static {v4, v6}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v6

    xor-int/2addr v5, v6

    ushr-int/lit8 v4, v4, 0x3

    xor-int/2addr v4, v5

    add-int/2addr v2, v4

    add-int/lit8 v4, v0, -0x10

    aget v4, v3, v4

    add-int/2addr v2, v4

    add-int/2addr v2, v0

    aput v2, v3, v0

    .line 117
    add-int/lit8 v0, v0, 0x1

    goto :goto_97

    .line 127
    :cond_d1
    const/16 v0, 0x200

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    invoke-static {v3, v0, v2, v1, v9}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 128
    const/16 v0, 0x600

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    invoke-static {v3, v0, v2, v1, v9}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    move v0, v1

    .line 130
    :goto_e0
    const/16 v2, 0x1000

    if-ge v0, v2, :cond_ea

    .line 132
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->step()I

    .line 130
    add-int/lit8 v0, v0, 0x1

    goto :goto_e0

    .line 135
    :cond_ea
    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    .line 136
    return-void
.end method

.method private static rotateRight(II)I
    .registers 4

    .prologue
    .line 244
    ushr-int v0, p0, p1

    neg-int v1, p1

    shl-int v1, p0, v1

    or-int/2addr v0, v1

    return v0
.end method

.method private step()I
    .registers 10

    .prologue
    const/16 v8, 0x17

    const/16 v7, 0xa

    .line 33
    iget v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    and-int/lit16 v0, v0, 0x3ff

    .line 35
    iget v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    const/16 v2, 0x400

    if-ge v1, v2, :cond_7a

    .line 37
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    add-int/lit8 v2, v0, -0x3

    and-int/lit16 v2, v2, 0x3ff

    aget v1, v1, v2

    .line 38
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    add-int/lit16 v3, v0, -0x3ff

    and-int/lit16 v3, v3, 0x3ff

    aget v2, v2, v3

    .line 39
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    aget v4, v3, v0

    iget-object v5, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    add-int/lit8 v6, v0, -0xa

    and-int/lit16 v6, v6, 0x3ff

    aget v5, v5, v6

    .line 40
    invoke-static {v1, v7}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v6

    invoke-static {v2, v8}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v7

    xor-int/2addr v6, v7

    add-int/2addr v5, v6

    iget-object v6, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    xor-int/2addr v1, v2

    and-int/lit16 v1, v1, 0x3ff

    aget v1, v6, v1

    add-int/2addr v1, v5

    add-int/2addr v1, v4

    aput v1, v3, v0

    .line 43
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    add-int/lit8 v2, v0, -0xc

    and-int/lit16 v2, v2, 0x3ff

    aget v1, v1, v2

    .line 44
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    and-int/lit16 v3, v1, 0xff

    aget v2, v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    shr-int/lit8 v4, v1, 0x8

    and-int/lit16 v4, v4, 0xff

    add-int/lit16 v4, v4, 0x100

    aget v3, v3, v4

    add-int/2addr v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    shr-int/lit8 v4, v1, 0x10

    and-int/lit16 v4, v4, 0xff

    add-int/lit16 v4, v4, 0x200

    aget v3, v3, v4

    add-int/2addr v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    ushr-int/lit8 v1, v1, 0x18

    add-int/lit16 v1, v1, 0x300

    aget v1, v3, v1

    add-int/2addr v1, v2

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    aget v0, v2, v0

    xor-int/2addr v0, v1

    .line 61
    :goto_71
    iget v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    add-int/lit8 v1, v1, 0x1

    and-int/lit16 v1, v1, 0x7ff

    iput v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->cnt:I

    .line 62
    return v0

    .line 50
    :cond_7a
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    add-int/lit8 v2, v0, -0x3

    and-int/lit16 v2, v2, 0x3ff

    aget v1, v1, v2

    .line 51
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    add-int/lit16 v3, v0, -0x3ff

    and-int/lit16 v3, v3, 0x3ff

    aget v2, v2, v3

    .line 52
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    aget v4, v3, v0

    iget-object v5, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    add-int/lit8 v6, v0, -0xa

    and-int/lit16 v6, v6, 0x3ff

    aget v5, v5, v6

    .line 53
    invoke-static {v1, v7}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v6

    invoke-static {v2, v8}, Lorg/spongycastle/crypto/engines/HC256Engine;->rotateRight(II)I

    move-result v7

    xor-int/2addr v6, v7

    add-int/2addr v5, v6

    iget-object v6, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    xor-int/2addr v1, v2

    and-int/lit16 v1, v1, 0x3ff

    aget v1, v6, v1

    add-int/2addr v1, v5

    add-int/2addr v1, v4

    aput v1, v3, v0

    .line 56
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    add-int/lit8 v2, v0, -0xc

    and-int/lit16 v2, v2, 0x3ff

    aget v1, v1, v2

    .line 57
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    and-int/lit16 v3, v1, 0xff

    aget v2, v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    shr-int/lit8 v4, v1, 0x8

    and-int/lit16 v4, v4, 0xff

    add-int/lit16 v4, v4, 0x100

    aget v3, v3, v4

    add-int/2addr v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    shr-int/lit8 v4, v1, 0x10

    and-int/lit16 v4, v4, 0xff

    add-int/lit16 v4, v4, 0x200

    aget v3, v3, v4

    add-int/2addr v2, v3

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->p:[I

    ushr-int/lit8 v1, v1, 0x18

    add-int/lit16 v1, v1, 0x300

    aget v1, v3, v1

    add-int/2addr v1, v2

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->q:[I

    aget v0, v2, v0

    xor-int/2addr v0, v1

    goto :goto_71
.end method


# virtual methods
.method public getAlgorithmName()Ljava/lang/String;
    .registers 2

    .prologue
    .line 140
    const-string v0, "HC-256"

    return-object v0
.end method

.method public init(ZLorg/spongycastle/crypto/CipherParameters;)V
    .registers 6

    .prologue
    .line 155
    .line 157
    instance-of v0, p2, Lorg/spongycastle/crypto/params/ParametersWithIV;

    if-eqz v0, :cond_27

    move-object v0, p2

    .line 159
    check-cast v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/ParametersWithIV;->getIV()[B

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    move-object v0, p2

    .line 160
    check-cast v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/ParametersWithIV;->getParameters()Lorg/spongycastle/crypto/CipherParameters;

    move-result-object v0

    .line 167
    :goto_14
    instance-of v1, v0, Lorg/spongycastle/crypto/params/KeyParameter;

    if-eqz v1, :cond_2e

    .line 169
    check-cast v0, Lorg/spongycastle/crypto/params/KeyParameter;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/KeyParameter;->getKey()[B

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->key:[B

    .line 170
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->init()V

    .line 179
    const/4 v0, 0x1

    iput-boolean v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->initialised:Z

    .line 180
    return-void

    .line 164
    :cond_27
    const/4 v0, 0x0

    new-array v0, v0, [B

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->iv:[B

    move-object v0, p2

    goto :goto_14

    .line 174
    :cond_2e
    new-instance v0, Ljava/lang/IllegalArgumentException;

    new-instance v1, Ljava/lang/StringBuilder;

    const-string v2, "Invalid parameter passed to HC256 init - "

    invoke-direct {v1, v2}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

    .line 176
    invoke-virtual {p2}, Ljava/lang/Object;->getClass()Ljava/lang/Class;

    move-result-object v2

    invoke-virtual {v2}, Ljava/lang/Class;->getName()Ljava/lang/String;

    move-result-object v2

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v1

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v1

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

    throw v0
.end method

.method public processBytes([BII[BI)I
    .registers 10

    .prologue
    .line 206
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/HC256Engine;->initialised:Z

    if-nez v0, :cond_21

    .line 208
    new-instance v0, Ljava/lang/IllegalStateException;

    new-instance v1, Ljava/lang/StringBuilder;

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

    invoke-virtual {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->getAlgorithmName()Ljava/lang/String;

    move-result-object v2

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v1

    const-string v2, " not initialised"

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v1

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v1

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

    throw v0

    .line 212
    :cond_21
    add-int v0, p2, p3

    array-length v1, p1

    if-le v0, v1, :cond_2e

    .line 214
    new-instance v0, Lorg/spongycastle/crypto/DataLengthException;

    const-string v1, "input buffer too short"

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/DataLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 217
    :cond_2e
    add-int v0, p5, p3

    array-length v1, p4

    if-le v0, v1, :cond_3b

    .line 219
    new-instance v0, Lorg/spongycastle/crypto/OutputLengthException;

    const-string v1, "output buffer too short"

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/OutputLengthException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 222
    :cond_3b
    const/4 v0, 0x0

    :goto_3c
    if-ge v0, p3, :cond_4f

    .line 224
    add-int v1, p5, v0

    add-int v2, p2, v0

    aget-byte v2, p1, v2

    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->getByte()B

    move-result v3

    xor-int/2addr v2, v3

    int-to-byte v2, v2

    aput-byte v2, p4, v1

    .line 222
    add-int/lit8 v0, v0, 0x1

    goto :goto_3c

    .line 227
    :cond_4f
    return p3
.end method

.method public reset()V
    .registers 1

    .prologue
    .line 232
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->init()V

    .line 233
    return-void
.end method

.method public returnByte(B)B
    .registers 3

    .prologue
    .line 237
    invoke-direct {p0}, Lorg/spongycastle/crypto/engines/HC256Engine;->getByte()B

    move-result v0

    xor-int/2addr v0, p1

    int-to-byte v0, v0

    return v0
.end method