r.smali

.class public final Lcom/subgraph/orchid/crypto/r;
.super Ljava/lang/Object;
.source "TorStreamCipher.java"


# instance fields
.field private bGs:I

.field final bGt:Ljavax/crypto/spec/SecretKeySpec;

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

.field private final counter:[B

.field private final counterOut:[B


# direct methods
.method constructor <init>([B)V
    .registers 3

    .prologue
    .line 38
    const/4 v0, 0x0

    invoke-direct {p0, p1, v0}, Lcom/subgraph/orchid/crypto/r;-><init>([B[B)V

    .line 39
    return-void
.end method

.method public constructor <init>([B[B)V
    .registers 7

    .prologue
    const/4 v3, 0x0

    const/16 v2, 0x10

    .line 41
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 33
    const/4 v0, -0x1

    iput v0, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    .line 1073
    new-instance v0, Ljavax/crypto/spec/SecretKeySpec;

    const-string v1, "AES"

    invoke-direct {v0, p1, v1}, Ljavax/crypto/spec/SecretKeySpec;-><init>([BLjava/lang/String;)V

    .line 42
    iput-object v0, p0, Lcom/subgraph/orchid/crypto/r;->bGt:Ljavax/crypto/spec/SecretKeySpec;

    .line 43
    iget-object v0, p0, Lcom/subgraph/orchid/crypto/r;->bGt:Ljavax/crypto/spec/SecretKeySpec;

    invoke-static {v0}, Lcom/subgraph/orchid/crypto/r;->a(Ljavax/crypto/spec/SecretKeySpec;)Ljavax/crypto/Cipher;

    move-result-object v0

    iput-object v0, p0, Lcom/subgraph/orchid/crypto/r;->cipher:Ljavax/crypto/Cipher;

    .line 44
    new-array v0, v2, [B

    iput-object v0, p0, Lcom/subgraph/orchid/crypto/r;->counter:[B

    .line 45
    new-array v0, v2, [B

    iput-object v0, p0, Lcom/subgraph/orchid/crypto/r;->counterOut:[B

    .line 47
    if-eqz p2, :cond_32

    .line 2053
    array-length v0, p2

    if-eq v0, v2, :cond_2d

    .line 2054
    new-instance v0, Ljava/lang/IllegalArgumentException;

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

    throw v0

    .line 2056
    :cond_2d
    iget-object v0, p0, Lcom/subgraph/orchid/crypto/r;->counter:[B

    invoke-static {p2, v3, v0, v3, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 50
    :cond_32
    return-void
.end method

.method static Ml()Ljavax/crypto/SecretKey;
    .registers 2

    .prologue
    .line 88
    :try_start_0
    const-string v0, "AES"

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

    move-result-object v0

    .line 89
    const/16 v1, 0x80

    invoke-virtual {v0, v1}, Ljavax/crypto/KeyGenerator;->init(I)V

    .line 90
    invoke-virtual {v0}, Ljavax/crypto/KeyGenerator;->generateKey()Ljavax/crypto/SecretKey;
    :try_end_e
    .catch Ljava/security/GeneralSecurityException; {:try_start_0 .. :try_end_e} :catch_10

    move-result-object v0

    return-object v0

    .line 91
    :catch_10
    move-exception v0

    .line 92
    new-instance v1, Lcom/subgraph/orchid/TorException;

    invoke-direct {v1, v0}, Lcom/subgraph/orchid/TorException;-><init>(Ljava/lang/Throwable;)V

    throw v1
.end method

.method private Mm()V
    .registers 7

    .prologue
    .line 109
    :try_start_0
    iget-object v0, p0, Lcom/subgraph/orchid/crypto/r;->cipher:Ljavax/crypto/Cipher;

    iget-object v1, p0, Lcom/subgraph/orchid/crypto/r;->counter:[B

    const/4 v2, 0x0

    const/16 v3, 0x10

    iget-object v4, p0, Lcom/subgraph/orchid/crypto/r;->counterOut:[B

    const/4 v5, 0x0

    invoke-virtual/range {v0 .. v5}, Ljavax/crypto/Cipher;->doFinal([BII[BI)I
    :try_end_d
    .catch Ljava/security/GeneralSecurityException; {:try_start_0 .. :try_end_d} :catch_e

    .line 112
    return-void

    .line 110
    :catch_e
    move-exception v0

    .line 111
    new-instance v1, Lcom/subgraph/orchid/TorException;

    invoke-direct {v1, v0}, Lcom/subgraph/orchid/TorException;-><init>(Ljava/lang/Throwable;)V

    throw v1
.end method

.method private static a(Ljavax/crypto/spec/SecretKeySpec;)Ljavax/crypto/Cipher;
    .registers 3

    .prologue
    .line 78
    :try_start_0
    const-string v0, "AES/ECB/NoPadding"

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

    move-result-object v0

    .line 79
    const/4 v1, 0x1

    invoke-virtual {v0, v1, p0}, Ljavax/crypto/Cipher;->init(ILjava/security/Key;)V
    :try_end_a
    .catch Ljava/security/GeneralSecurityException; {:try_start_0 .. :try_end_a} :catch_b

    .line 80
    return-object v0

    .line 81
    :catch_b
    move-exception v0

    .line 82
    new-instance v1, Lcom/subgraph/orchid/TorException;

    invoke-direct {v1, v0}, Lcom/subgraph/orchid/TorException;-><init>(Ljava/lang/Throwable;)V

    throw v1
.end method

.method public static ao([B)Lcom/subgraph/orchid/crypto/r;
    .registers 2

    .prologue
    .line 21
    new-instance v0, Lcom/subgraph/orchid/crypto/r;

    invoke-direct {v0, p0}, Lcom/subgraph/orchid/crypto/r;-><init>([B)V

    return-object v0
.end method


# virtual methods
.method public final ap([B)V
    .registers 4

    .prologue
    .line 60
    const/4 v0, 0x0

    array-length v1, p1

    invoke-virtual {p0, p1, v0, v1}, Lcom/subgraph/orchid/crypto/r;->n([BII)V

    .line 61
    return-void
.end method

.method public final declared-synchronized n([BII)V
    .registers 13

    .prologue
    const/4 v1, 0x1

    const/4 v2, 0x0

    .line 64
    monitor-enter p0

    move v4, v2

    :goto_4
    if-ge v4, p3, :cond_49

    .line 65
    add-int v5, v4, p2

    :try_start_8
    aget-byte v6, p1, v5

    .line 2097
    iget v0, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    const/4 v3, -0x1

    if-eq v0, v3, :cond_15

    iget v0, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    const/16 v3, 0x10

    if-lt v0, v3, :cond_37

    .line 2102
    :cond_15
    invoke-direct {p0}, Lcom/subgraph/orchid/crypto/r;->Mm()V

    .line 2117
    const/16 v0, 0xf

    move v3, v0

    move v0, v1

    :goto_1c
    if-ltz v3, :cond_34

    .line 2118
    iget-object v7, p0, Lcom/subgraph/orchid/crypto/r;->counter:[B

    aget-byte v7, v7, v3

    and-int/lit16 v7, v7, 0xff

    add-int/2addr v7, v0

    .line 2119
    const/16 v0, 0xff

    if-le v7, v0, :cond_32

    move v0, v1

    .line 2123
    :goto_2a
    iget-object v8, p0, Lcom/subgraph/orchid/crypto/r;->counter:[B

    int-to-byte v7, v7

    aput-byte v7, v8, v3

    .line 2117
    add-int/lit8 v3, v3, -0x1

    goto :goto_1c

    :cond_32
    move v0, v2

    .line 2122
    goto :goto_2a

    .line 2104
    :cond_34
    const/4 v0, 0x0

    iput v0, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    .line 2099
    :cond_37
    iget-object v0, p0, Lcom/subgraph/orchid/crypto/r;->counterOut:[B

    iget v3, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    add-int/lit8 v7, v3, 0x1

    iput v7, p0, Lcom/subgraph/orchid/crypto/r;->bGs:I

    aget-byte v0, v0, v3

    .line 65
    xor-int/2addr v0, v6

    int-to-byte v0, v0

    aput-byte v0, p1, v5
    :try_end_45
    .catchall {:try_start_8 .. :try_end_45} :catchall_4b

    .line 64
    add-int/lit8 v0, v4, 0x1

    move v4, v0

    goto :goto_4

    .line 66
    :cond_49
    monitor-exit p0

    return-void

    .line 64
    :catchall_4b
    move-exception v0

    monitor-exit p0

    throw v0
.end method