Tables64kGCMMultiplier.smali

.class public Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;
.super Ljava/lang/Object;
.source "Tables64kGCMMultiplier.java"

# interfaces
.implements Lorg/spongycastle/crypto/modes/gcm/GCMMultiplier;


# instance fields
.field private H:[B

.field private M:[[[I


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

    .prologue
    .line 6
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method


# virtual methods
.method public init([B)V
    .registers 12

    .prologue
    const/16 v9, 0x100

    const/16 v2, 0x80

    const/16 v8, 0x10

    const/4 v1, 0x0

    .line 13
    iget-object v0, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    if-nez v0, :cond_41

    .line 15
    const/4 v0, 0x4

    filled-new-array {v8, v9, v0}, [I

    move-result-object v0

    sget-object v3, Ljava/lang/Integer;->TYPE:Ljava/lang/Class;

    invoke-static {v3, v0}, Ljava/lang/reflect/Array;->newInstance(Ljava/lang/Class;[I)Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [[[I

    iput-object v0, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    .line 22
    :cond_1a
    invoke-static {p1}, Lorg/spongycastle/util/Arrays;->clone([B)[B

    move-result-object v0

    iput-object v0, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->H:[B

    .line 25
    iget-object v0, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v0, v0, v1

    aget-object v0, v0, v2

    invoke-static {p1, v0}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->asInts([B[I)V

    .line 27
    const/16 v0, 0x40

    :goto_2b
    if-lez v0, :cond_4a

    .line 29
    iget-object v3, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v3, v3, v1

    add-int v4, v0, v0

    aget-object v3, v3, v4

    iget-object v4, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v4, v4, v1

    aget-object v4, v4, v0

    invoke-static {v3, v4}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->multiplyP([I[I)V

    .line 27
    shr-int/lit8 v0, v0, 0x1

    goto :goto_2b

    .line 17
    :cond_41
    iget-object v0, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->H:[B

    invoke-static {v0, p1}, Lorg/spongycastle/util/Arrays;->areEqual([B[B)Z

    move-result v0

    if-eqz v0, :cond_1a

    .line 45
    :cond_49
    return-void

    :cond_4a
    move v0, v1

    .line 35
    :cond_4b
    const/4 v1, 0x2

    move v3, v1

    :goto_4d
    if-ge v3, v9, :cond_70

    .line 37
    const/4 v1, 0x1

    :goto_50
    if-ge v1, v3, :cond_6c

    .line 39
    iget-object v4, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v4, v4, v0

    aget-object v4, v4, v3

    iget-object v5, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v5, v5, v0

    aget-object v5, v5, v1

    iget-object v6, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v6, v6, v0

    add-int v7, v3, v1

    aget-object v6, v6, v7

    invoke-static {v4, v5, v6}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->xor([I[I[I)V

    .line 37
    add-int/lit8 v1, v1, 0x1

    goto :goto_50

    .line 35
    :cond_6c
    add-int v1, v3, v3

    move v3, v1

    goto :goto_4d

    .line 43
    :cond_70
    add-int/lit8 v0, v0, 0x1

    if-eq v0, v8, :cond_49

    move v1, v2

    .line 49
    :goto_75
    if-lez v1, :cond_4b

    .line 51
    iget-object v3, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    add-int/lit8 v4, v0, -0x1

    aget-object v3, v3, v4

    aget-object v3, v3, v1

    iget-object v4, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v4, v4, v0

    aget-object v4, v4, v1

    invoke-static {v3, v4}, Lorg/spongycastle/crypto/modes/gcm/GCMUtil;->multiplyP8([I[I)V

    .line 49
    shr-int/lit8 v1, v1, 0x1

    goto :goto_75
.end method

.method public multiplyH([B)V
    .registers 11

    .prologue
    const/4 v8, 0x3

    const/4 v7, 0x2

    const/4 v6, 0x1

    const/4 v5, 0x0

    .line 60
    const/4 v0, 0x4

    new-array v1, v0, [I

    .line 61
    const/16 v0, 0xf

    :goto_9
    if-ltz v0, :cond_34

    .line 64
    iget-object v2, p0, Lorg/spongycastle/crypto/modes/gcm/Tables64kGCMMultiplier;->M:[[[I

    aget-object v2, v2, v0

    aget-byte v3, p1, v0

    and-int/lit16 v3, v3, 0xff

    aget-object v2, v2, v3

    .line 65
    aget v3, v1, v5

    aget v4, v2, v5

    xor-int/2addr v3, v4

    aput v3, v1, v5

    .line 66
    aget v3, v1, v6

    aget v4, v2, v6

    xor-int/2addr v3, v4

    aput v3, v1, v6

    .line 67
    aget v3, v1, v7

    aget v4, v2, v7

    xor-int/2addr v3, v4

    aput v3, v1, v7

    .line 68
    aget v3, v1, v8

    aget v2, v2, v8

    xor-int/2addr v2, v3

    aput v2, v1, v8

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

    goto :goto_9

    .line 71
    :cond_34
    invoke-static {v1, p1, v5}, Lorg/spongycastle/util/Pack;->intToBigEndian([I[BI)V

    .line 72
    return-void
.end method