BufferedBlockCipher.smali

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


# instance fields
.field protected buf:[B

.field protected bufOff:I

.field protected cipher:Lorg/spongycastle/crypto/BlockCipher;

.field protected forEncryption:Z

.field protected partialBlockOkay:Z

.field protected pgpCFB:Z


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

    .prologue
    .line 27
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 28
    return-void
.end method

.method public constructor <init>(Lorg/spongycastle/crypto/BlockCipher;)V
    .registers 7

    .prologue
    const/4 v1, 0x1

    const/4 v2, 0x0

    .line 37
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 38
    iput-object p1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    .line 40
    invoke-interface {p1}, Lorg/spongycastle/crypto/BlockCipher;->getBlockSize()I

    move-result v0

    new-array v0, v0, [B

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

    .line 41
    iput v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 46
    invoke-interface {p1}, Lorg/spongycastle/crypto/BlockCipher;->getAlgorithmName()Ljava/lang/String;

    move-result-object v3

    .line 47
    const/16 v0, 0x2f

    invoke-virtual {v3, v0}, Ljava/lang/String;->indexOf(I)I

    move-result v0

    add-int/lit8 v4, v0, 0x1

    .line 49
    if-lez v4, :cond_35

    const-string v0, "PGP"

    invoke-virtual {v3, v0, v4}, Ljava/lang/String;->startsWith(Ljava/lang/String;I)Z

    move-result v0

    if-eqz v0, :cond_35

    move v0, v1

    :goto_28
    iput-boolean v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->pgpCFB:Z

    .line 51
    iget-boolean v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->pgpCFB:Z

    if-nez v0, :cond_32

    instance-of v0, p1, Lorg/spongycastle/crypto/StreamCipher;

    if-eqz v0, :cond_37

    .line 57
    :cond_32
    :goto_32
    iput-boolean v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->partialBlockOkay:Z

    .line 59
    return-void

    :cond_35
    move v0, v2

    .line 49
    goto :goto_28

    .line 57
    :cond_37
    if-lez v4, :cond_41

    const-string v0, "OpenPGP"

    invoke-virtual {v3, v0, v4}, Ljava/lang/String;->startsWith(Ljava/lang/String;I)Z

    move-result v0

    if-nez v0, :cond_32

    :cond_41
    move v1, v2

    goto :goto_32
.end method


# virtual methods
.method public doFinal([BI)I
    .registers 8

    .prologue
    const/4 v0, 0x0

    .line 271
    .line 273
    :try_start_1
    iget v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    add-int/2addr v1, p2

    array-length v2, p1

    if-le v1, v2, :cond_14

    .line 275
    new-instance v0, Lorg/spongycastle/crypto/OutputLengthException;

    const-string v1, "output buffer too short for doFinal()"

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

    throw v0
    :try_end_f
    .catchall {:try_start_1 .. :try_end_f} :catchall_f

    .line 295
    :catchall_f
    move-exception v0

    invoke-virtual {p0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->reset()V

    throw v0

    .line 278
    :cond_14
    :try_start_14
    iget v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    if-eqz v1, :cond_3a

    .line 280
    iget-boolean v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->partialBlockOkay:Z

    if-nez v0, :cond_24

    .line 282
    new-instance v0, Lorg/spongycastle/crypto/DataLengthException;

    const-string v1, "data not block size aligned"

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

    throw v0

    .line 285
    :cond_24
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    iget-object v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    const/4 v2, 0x0

    iget-object v3, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    const/4 v4, 0x0

    invoke-interface {v0, v1, v2, v3, v4}, Lorg/spongycastle/crypto/BlockCipher;->processBlock([BI[BI)I

    .line 286
    iget v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 287
    const/4 v1, 0x0

    iput v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 288
    iget-object v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    const/4 v2, 0x0

    invoke-static {v1, v2, p1, p2, v0}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
    :try_end_3a
    .catchall {:try_start_14 .. :try_end_3a} :catchall_f

    .line 295
    :cond_3a
    invoke-virtual {p0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->reset()V

    return v0
.end method

.method public getBlockSize()I
    .registers 2

    .prologue
    .line 99
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    invoke-interface {v0}, Lorg/spongycastle/crypto/BlockCipher;->getBlockSize()I

    move-result v0

    return v0
.end method

.method public getOutputSize(I)I
    .registers 3

    .prologue
    .line 147
    iget v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    add-int/2addr v0, p1

    return v0
.end method

.method public getUnderlyingCipher()Lorg/spongycastle/crypto/BlockCipher;
    .registers 2

    .prologue
    .line 68
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    return-object v0
.end method

.method public getUpdateOutputSize(I)I
    .registers 5

    .prologue
    .line 113
    iget v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    add-int v1, p1, v0

    .line 116
    iget-boolean v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->pgpCFB:Z

    if-eqz v0, :cond_23

    .line 118
    iget-boolean v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->forEncryption:Z

    if-eqz v0, :cond_1d

    .line 120
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v0, v0

    rem-int v0, v1, v0

    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    invoke-interface {v2}, Lorg/spongycastle/crypto/BlockCipher;->getBlockSize()I

    move-result v2

    add-int/lit8 v2, v2, 0x2

    sub-int/2addr v0, v2

    .line 132
    :goto_1a
    sub-int v0, v1, v0

    return v0

    .line 124
    :cond_1d
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v0, v0

    rem-int v0, v1, v0

    goto :goto_1a

    .line 129
    :cond_23
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v0, v0

    rem-int v0, v1, v0

    goto :goto_1a
.end method

.method public init(ZLorg/spongycastle/crypto/CipherParameters;)V
    .registers 4

    .prologue
    .line 85
    iput-boolean p1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->forEncryption:Z

    .line 87
    invoke-virtual {p0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->reset()V

    .line 89
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    invoke-interface {v0, p1, p2}, Lorg/spongycastle/crypto/BlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 90
    return-void
.end method

.method public processByte(B[BI)I
    .registers 8

    .prologue
    const/4 v1, 0x0

    .line 166
    .line 168
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    iget v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    add-int/lit8 v3, v2, 0x1

    iput v3, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    aput-byte p1, v0, v2

    .line 170
    iget v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v2, v2

    if-ne v0, v2, :cond_1d

    .line 172
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    invoke-interface {v0, v2, v1, p2, p3}, Lorg/spongycastle/crypto/BlockCipher;->processBlock([BI[BI)I

    move-result v0

    .line 173
    iput v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 176
    :goto_1c
    return v0

    :cond_1d
    move v0, v1

    goto :goto_1c
.end method

.method public processBytes([BII[BI)I
    .registers 13

    .prologue
    const/4 v3, 0x0

    .line 199
    if-gez p3, :cond_b

    .line 201
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "Can\'t have a negative input length!"

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

    throw v0

    .line 204
    :cond_b
    invoke-virtual {p0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->getBlockSize()I

    move-result v4

    .line 205
    invoke-virtual {p0, p3}, Lorg/spongycastle/crypto/BufferedBlockCipher;->getUpdateOutputSize(I)I

    move-result v0

    .line 207
    if-lez v0, :cond_21

    .line 209
    add-int/2addr v0, p5

    array-length v1, p4

    if-le v0, v1, :cond_21

    .line 211
    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 216
    :cond_21
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v0, v0

    iget v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    sub-int v2, v0, v1

    .line 218
    if-le p3, v2, :cond_51

    .line 220
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    iget v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    invoke-static {p1, p2, v0, v1, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 222
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    iget-object v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    invoke-interface {v0, v1, v3, p4, p5}, Lorg/spongycastle/crypto/BlockCipher;->processBlock([BI[BI)I

    move-result v0

    add-int/lit8 v0, v0, 0x0

    .line 224
    iput v3, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 225
    sub-int v1, p3, v2

    .line 226
    add-int/2addr v2, p2

    .line 228
    :goto_40
    iget-object v5, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v5, v5

    if-le v1, v5, :cond_54

    .line 230
    iget-object v5, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    add-int v6, p5, v0

    invoke-interface {v5, p1, v2, p4, v6}, Lorg/spongycastle/crypto/BlockCipher;->processBlock([BI[BI)I

    move-result v5

    add-int/2addr v0, v5

    .line 232
    sub-int/2addr v1, v4

    .line 233
    add-int/2addr v2, v4

    goto :goto_40

    :cond_51
    move v0, v3

    move v1, p3

    move v2, p2

    .line 237
    :cond_54
    iget-object v4, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    iget v5, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    invoke-static {p1, v2, v4, v5, v1}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 239
    iget v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    add-int/2addr v1, v2

    iput v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 241
    iget v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v2, v2

    if-ne v1, v2, :cond_74

    .line 243
    iget-object v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    add-int v4, p5, v0

    invoke-interface {v1, v2, v3, p4, v4}, Lorg/spongycastle/crypto/BlockCipher;->processBlock([BI[BI)I

    move-result v1

    add-int/2addr v0, v1

    .line 244
    iput v3, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 247
    :cond_74
    return v0
.end method

.method public reset()V
    .registers 4

    .prologue
    const/4 v1, 0x0

    .line 308
    move v0, v1

    :goto_2
    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    array-length v2, v2

    if-ge v0, v2, :cond_e

    .line 310
    iget-object v2, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->buf:[B

    aput-byte v1, v2, v0

    .line 308
    add-int/lit8 v0, v0, 0x1

    goto :goto_2

    .line 313
    :cond_e
    iput v1, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->bufOff:I

    .line 318
    iget-object v0, p0, Lorg/spongycastle/crypto/BufferedBlockCipher;->cipher:Lorg/spongycastle/crypto/BlockCipher;

    invoke-interface {v0}, Lorg/spongycastle/crypto/BlockCipher;->reset()V

    .line 319
    return-void
.end method