PayloadCipher.smali

.class public Lcom/avast/crypto/PayloadCipher;
.super Ljava/lang/Object;


# annotations
.annotation system Ldalvik/annotation/MemberClasses;
    value = {
        Lcom/avast/crypto/PayloadCipher$OpMode;
    }
.end annotation


# static fields
.field protected static final g:Ljava/lang/ThreadLocal;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/lang/ThreadLocal<",
            "Ljavax/crypto/Cipher;",
            ">;"
        }
    .end annotation
.end field

.field protected static final h:Ljava/lang/ThreadLocal;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/lang/ThreadLocal<",
            "Ljava/security/AlgorithmParameters;",
            ">;"
        }
    .end annotation
.end field

.field protected static final i:Ljava/lang/ThreadLocal;
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "Ljava/lang/ThreadLocal<",
            "Ljava/util/Random;",
            ">;"
        }
    .end annotation
.end field


# instance fields
.field private a:[B

.field private b:[B

.field private final c:Ljavax/crypto/Cipher;

.field private final d:Ljava/util/Random;

.field private e:Lcom/avast/crypto/PayloadCipher$OpMode;

.field private f:Z


# direct methods
.method static constructor <clinit>()V
    .registers 1

    new-instance v0, Ljava/lang/ThreadLocal;

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

    sput-object v0, Lcom/avast/crypto/PayloadCipher;->g:Ljava/lang/ThreadLocal;

    new-instance v0, Ljava/lang/ThreadLocal;

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

    sput-object v0, Lcom/avast/crypto/PayloadCipher;->h:Ljava/lang/ThreadLocal;

    new-instance v0, Ljava/lang/ThreadLocal;

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

    sput-object v0, Lcom/avast/crypto/PayloadCipher;->i:Ljava/lang/ThreadLocal;

    return-void
.end method

.method protected constructor <init>(Ljavax/crypto/Cipher;Ljava/security/AlgorithmParameters;Ljava/util/Random;)V
    .registers 4
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

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

    iput-object p1, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    iput-object p3, p0, Lcom/avast/crypto/PayloadCipher;->d:Ljava/util/Random;

    const/4 p1, 0x0

    iput-boolean p1, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    sget-object p1, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    iput-object p1, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;

    return-void
.end method

.method private a([B)I
    .registers 7
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    iget-boolean v0, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    const/4 v1, 0x0

    if-nez v0, :cond_1e

    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    array-length v2, v0

    add-int/2addr v2, v1

    array-length v3, p1

    array-length v4, v0

    if-lt v3, v4, :cond_16

    array-length v3, v0

    invoke-static {v0, v1, p1, v1, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    const/4 p1, 0x1

    iput-boolean p1, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    move v1, v2

    goto :goto_1e

    :cond_16
    new-instance p1, Lcom/avast/crypto/PayloadException;

    const-string v0, "insufficient output buffer size"

    invoke-direct {p1, v0}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/String;)V

    throw p1

    :cond_1e
    :goto_1e
    return v1
.end method

.method public static b([B[BI[B)I
    .registers 5
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    sget-object v0, Lcom/avast/crypto/PayloadCipher$OpMode;->g:Lcom/avast/crypto/PayloadCipher$OpMode;

    invoke-static {v0, p0}, Lcom/avast/crypto/PayloadCipher;->h(Lcom/avast/crypto/PayloadCipher$OpMode;[B)Lcom/avast/crypto/PayloadCipher;

    move-result-object p0

    if-nez p3, :cond_d

    invoke-virtual {p0, p2}, Lcom/avast/crypto/PayloadCipher;->e(I)I

    move-result p0

    goto :goto_11

    :cond_d
    invoke-virtual {p0, p1, p2, p3}, Lcom/avast/crypto/PayloadCipher;->c([BI[B)I

    move-result p0

    :goto_11
    return p0
.end method

.method public static d([B[BI[B)I
    .registers 5
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    sget-object v0, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    invoke-static {v0, p0}, Lcom/avast/crypto/PayloadCipher;->h(Lcom/avast/crypto/PayloadCipher$OpMode;[B)Lcom/avast/crypto/PayloadCipher;

    move-result-object p0

    if-nez p3, :cond_d

    invoke-virtual {p0, p2}, Lcom/avast/crypto/PayloadCipher;->e(I)I

    move-result p0

    goto :goto_11

    :cond_d
    invoke-virtual {p0, p1, p2, p3}, Lcom/avast/crypto/PayloadCipher;->c([BI[B)I

    move-result p0

    :goto_11
    return p0
.end method

.method protected static h(Lcom/avast/crypto/PayloadCipher$OpMode;[B)Lcom/avast/crypto/PayloadCipher;
    .registers 3
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    const/4 v0, 0x0

    invoke-static {p0, p1, v0}, Lcom/avast/crypto/PayloadCipher;->i(Lcom/avast/crypto/PayloadCipher$OpMode;[B[B)Lcom/avast/crypto/PayloadCipher;

    move-result-object p0

    return-object p0
.end method

.method protected static i(Lcom/avast/crypto/PayloadCipher$OpMode;[B[B)Lcom/avast/crypto/PayloadCipher;
    .registers 7
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    sget-object v0, Lcom/avast/crypto/PayloadCipher;->g:Ljava/lang/ThreadLocal;

    invoke-virtual {v0}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;

    move-result-object v0

    check-cast v0, Ljavax/crypto/Cipher;

    sget-object v1, Lcom/avast/crypto/PayloadCipher;->h:Ljava/lang/ThreadLocal;

    invoke-virtual {v1}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;

    move-result-object v1

    check-cast v1, Ljava/security/AlgorithmParameters;

    sget-object v2, Lcom/avast/crypto/PayloadCipher;->i:Ljava/lang/ThreadLocal;

    invoke-virtual {v2}, Ljava/lang/ThreadLocal;->get()Ljava/lang/Object;

    move-result-object v2

    check-cast v2, Ljava/util/Random;

    if-nez v0, :cond_2a

    :try_start_1a
    const-string v0, "AES/CBC/PKCS5Padding"

    invoke-static {v0}, Ljavax/crypto/Cipher;->getInstance(Ljava/lang/String;)Ljavax/crypto/Cipher;

    move-result-object v0

    sget-object v3, Lcom/avast/crypto/PayloadCipher;->g:Ljava/lang/ThreadLocal;

    invoke-virtual {v3, v0}, Ljava/lang/ThreadLocal;->set(Ljava/lang/Object;)V

    goto :goto_2a

    :catch_26
    move-exception p0

    goto :goto_44

    :catch_28
    move-exception p0

    goto :goto_4a

    :cond_2a
    :goto_2a
    if-nez v1, :cond_37

    const-string v1, "AES"

    invoke-static {v1}, Ljava/security/AlgorithmParameters;->getInstance(Ljava/lang/String;)Ljava/security/AlgorithmParameters;

    move-result-object v1

    sget-object v3, Lcom/avast/crypto/PayloadCipher;->h:Ljava/lang/ThreadLocal;

    invoke-virtual {v3, v1}, Ljava/lang/ThreadLocal;->set(Ljava/lang/Object;)V

    :cond_37
    if-nez v2, :cond_50

    new-instance v2, Ljava/util/Random;

    invoke-direct {v2}, Ljava/util/Random;-><init>()V

    sget-object v3, Lcom/avast/crypto/PayloadCipher;->i:Ljava/lang/ThreadLocal;

    invoke-virtual {v3, v2}, Ljava/lang/ThreadLocal;->set(Ljava/lang/Object;)V
    :try_end_43
    .catch Ljava/security/NoSuchAlgorithmException; {:try_start_1a .. :try_end_43} :catch_28
    .catch Ljavax/crypto/NoSuchPaddingException; {:try_start_1a .. :try_end_43} :catch_26

    goto :goto_50

    :goto_44
    new-instance p1, Lcom/avast/crypto/PayloadException;

    invoke-direct {p1, p0}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p1

    :goto_4a
    new-instance p1, Lcom/avast/crypto/PayloadException;

    invoke-direct {p1, p0}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p1

    :cond_50
    :goto_50
    new-instance v3, Lcom/avast/crypto/PayloadCipher;

    invoke-direct {v3, v0, v1, v2}, Lcom/avast/crypto/PayloadCipher;-><init>(Ljavax/crypto/Cipher;Ljava/security/AlgorithmParameters;Ljava/util/Random;)V

    if-nez p2, :cond_5b

    invoke-virtual {v3, p0, p1}, Lcom/avast/crypto/PayloadCipher;->f(Lcom/avast/crypto/PayloadCipher$OpMode;[B)V

    goto :goto_5e

    :cond_5b
    invoke-virtual {v3, p0, p1, p2}, Lcom/avast/crypto/PayloadCipher;->g(Lcom/avast/crypto/PayloadCipher$OpMode;[B[B)V

    :goto_5e
    return-object v3
.end method

.method private j([BI)I
    .registers 7
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    :try_start_0
    iget-boolean v0, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    const/4 v1, 0x0

    if-nez v0, :cond_3c

    const/16 v0, 0x10

    if-lt p2, v0, :cond_34

    iget-object p2, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    if-nez p2, :cond_11

    new-array p2, v0, [B

    iput-object p2, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    :cond_11
    iget-object p2, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    invoke-static {p1, v1, p2, v1, v0}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    const/4 p1, 0x1

    iput-boolean p1, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    iget-object p1, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    array-length p1, p1

    add-int/2addr v1, p1

    new-instance p1, Ljavax/crypto/spec/SecretKeySpec;

    iget-object p2, p0, Lcom/avast/crypto/PayloadCipher;->a:[B

    const-string v0, "AES"

    invoke-direct {p1, p2, v0}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    iget-object p2, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    const/4 v0, 0x2

    new-instance v2, Ljavax/crypto/spec/IvParameterSpec;

    iget-object v3, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    invoke-direct {v2, v3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    invoke-virtual {p2, v0, p1, v2}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    goto :goto_3c

    :cond_34
    new-instance p1, Lcom/avast/crypto/PayloadException;

    const-string p2, "insufficient input buffer size"

    invoke-direct {p1, p2}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/String;)V

    throw p1
    :try_end_3c
    .catch Ljava/security/InvalidKeyException; {:try_start_0 .. :try_end_3c} :catch_44
    .catch Ljava/security/InvalidAlgorithmParameterException; {:try_start_0 .. :try_end_3c} :catch_3d

    :cond_3c
    :goto_3c
    return v1

    :catch_3d
    move-exception p1

    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2

    :catch_44
    move-exception p1

    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2
.end method


# virtual methods
.method public final c([BI[B)I
    .registers 13
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    :try_start_0
    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;

    sget-object v1, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    const/4 v2, 0x0

    if-ne v0, v1, :cond_1a

    invoke-direct {p0, p3}, Lcom/avast/crypto/PayloadCipher;->a([B)I

    move-result v0

    add-int/2addr v0, v2

    iget-object v3, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    const/4 v5, 0x0

    move-object v4, p1

    move v6, p2

    move-object v7, p3

    move v8, v0

    invoke-virtual/range {v3 .. v8}, Ljavax/crypto/Cipher;->doFinal([BII[BI)I

    move-result p1

    add-int v2, v0, p1

    goto :goto_32

    :cond_1a
    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;

    sget-object v1, Lcom/avast/crypto/PayloadCipher$OpMode;->g:Lcom/avast/crypto/PayloadCipher$OpMode;

    if-ne v0, v1, :cond_32

    if-lez p2, :cond_32

    invoke-direct {p0, p1, p2}, Lcom/avast/crypto/PayloadCipher;->j([BI)I

    move-result v5

    iget-object v3, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    sub-int v6, p2, v5

    const/4 v8, 0x0

    move-object v4, p1

    move-object v7, p3

    invoke-virtual/range {v3 .. v8}, Ljavax/crypto/Cipher;->doFinal([BII[BI)I

    move-result p1
    :try_end_31
    .catch Ljavax/crypto/ShortBufferException; {:try_start_0 .. :try_end_31} :catch_41
    .catch Ljavax/crypto/IllegalBlockSizeException; {:try_start_0 .. :try_end_31} :catch_3a
    .catch Ljavax/crypto/BadPaddingException; {:try_start_0 .. :try_end_31} :catch_33

    add-int/2addr v2, p1

    :cond_32
    :goto_32
    return v2

    :catch_33
    move-exception p1

    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2

    :catch_3a
    move-exception p1

    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2

    :catch_41
    move-exception p1

    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2
.end method

.method public final e(I)I
    .registers 4
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    :try_start_0
    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;

    sget-object v1, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    if-ne v0, v1, :cond_e

    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    invoke-virtual {v0, p1}, Ljavax/crypto/Cipher;->getOutputSize(I)I

    move-result p1
    :try_end_c
    .catch Ljava/lang/IllegalStateException; {:try_start_0 .. :try_end_c} :catch_f

    add-int/lit8 p1, p1, 0x10

    :cond_e
    return p1

    :catch_f
    move-exception p1

    new-instance v0, Lcom/avast/crypto/PayloadException;

    invoke-direct {v0, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw v0
.end method

.method public final f(Lcom/avast/crypto/PayloadCipher$OpMode;[B)V
    .registers 4
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    const/4 v0, 0x0

    invoke-virtual {p0, p1, p2, v0}, Lcom/avast/crypto/PayloadCipher;->g(Lcom/avast/crypto/PayloadCipher$OpMode;[B[B)V

    return-void
.end method

.method public final g(Lcom/avast/crypto/PayloadCipher$OpMode;[B[B)V
    .registers 7
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/avast/crypto/PayloadException;
        }
    .end annotation

    if-nez p2, :cond_13

    :try_start_2
    iget-object v0, p0, Lcom/avast/crypto/PayloadCipher;->a:[B

    if-eqz v0, :cond_7

    goto :goto_13

    :cond_7
    new-instance p1, Lcom/avast/crypto/PayloadException;

    const-string p2, "invalid key"

    invoke-direct {p1, p2}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/String;)V

    throw p1

    :catch_f
    move-exception p1

    goto :goto_6d

    :catch_11
    move-exception p1

    goto :goto_73

    :cond_13
    :goto_13
    const/4 v0, 0x0

    if-eqz p2, :cond_1f

    array-length v1, p2

    new-array v1, v1, [B

    iput-object v1, p0, Lcom/avast/crypto/PayloadCipher;->a:[B

    array-length v2, v1

    invoke-static {p2, v0, v1, v0, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    :cond_1f
    iput-boolean v0, p0, Lcom/avast/crypto/PayloadCipher;->f:Z

    sget-object p2, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    if-ne p1, p2, :cond_64

    sget-object p1, Lcom/avast/crypto/PayloadCipher$OpMode;->f:Lcom/avast/crypto/PayloadCipher$OpMode;

    iput-object p1, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;

    new-instance p1, Ljavax/crypto/spec/SecretKeySpec;

    iget-object p2, p0, Lcom/avast/crypto/PayloadCipher;->a:[B

    const-string v1, "AES"

    invoke-direct {p1, p2, v1}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    const/16 p2, 0x10

    if-eqz p3, :cond_42

    array-length v1, p3

    if-ne v1, p2, :cond_3a

    goto :goto_42

    :cond_3a
    new-instance p1, Lcom/avast/crypto/PayloadException;

    const-string p2, "IV length mismatch"

    invoke-direct {p1, p2}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/String;)V

    throw p1

    :cond_42
    :goto_42
    if-nez p3, :cond_4e

    new-array p2, p2, [B

    iput-object p2, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    iget-object p3, p0, Lcom/avast/crypto/PayloadCipher;->d:Ljava/util/Random;

    invoke-virtual {p3, p2}, Ljava/util/Random;->nextBytes([B)V

    goto :goto_56

    :cond_4e
    new-array p2, p2, [B

    iput-object p2, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    array-length v1, p2

    invoke-static {p3, v0, p2, v0, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    :goto_56
    new-instance p2, Ljavax/crypto/spec/IvParameterSpec;

    iget-object p3, p0, Lcom/avast/crypto/PayloadCipher;->b:[B

    invoke-direct {p2, p3}, Ljavax/crypto/spec/IvParameterSpec;-><init>([B)V

    iget-object p3, p0, Lcom/avast/crypto/PayloadCipher;->c:Ljavax/crypto/Cipher;

    const/4 v0, 0x1

    invoke-virtual {p3, v0, p1, p2}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V

    goto :goto_6c

    :cond_64
    sget-object p2, Lcom/avast/crypto/PayloadCipher$OpMode;->g:Lcom/avast/crypto/PayloadCipher$OpMode;

    if-ne p1, p2, :cond_6c

    sget-object p1, Lcom/avast/crypto/PayloadCipher$OpMode;->g:Lcom/avast/crypto/PayloadCipher$OpMode;

    iput-object p1, p0, Lcom/avast/crypto/PayloadCipher;->e:Lcom/avast/crypto/PayloadCipher$OpMode;
    :try_end_6c
    .catch Ljava/security/InvalidKeyException; {:try_start_2 .. :try_end_6c} :catch_11
    .catch Ljava/security/InvalidAlgorithmParameterException; {:try_start_2 .. :try_end_6c} :catch_f

    :cond_6c
    :goto_6c
    return-void

    :goto_6d
    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2

    :goto_73
    new-instance p2, Lcom/avast/crypto/PayloadException;

    invoke-direct {p2, p1}, Lcom/avast/crypto/PayloadException;-><init>(Ljava/lang/Exception;)V

    throw p2
.end method