DESedeWrapEngine.smali

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

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


# static fields
.field private static final IV2:[B


# instance fields
.field digest:[B

.field private engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

.field private forWrapping:Z

.field private iv:[B

.field private param:Lorg/spongycastle/crypto/params/KeyParameter;

.field private paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

.field sha1:Lorg/spongycastle/crypto/Digest;


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

    .prologue
    .line 47
    const/16 v0, 0x8

    new-array v0, v0, [B

    fill-array-data v0, :array_a

    sput-object v0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->IV2:[B

    return-void

    :array_a
    .array-data 1
        0x4at
        -0x23t
        -0x5et
        0x2ct
        0x79t
        -0x18t
        0x21t
        0x5t
    .end array-data
.end method

.method public constructor <init>()V
    .registers 2

    .prologue
    .line 28
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 54
    new-instance v0, Lorg/spongycastle/crypto/digests/SHA1Digest;

    invoke-direct {v0}, Lorg/spongycastle/crypto/digests/SHA1Digest;-><init>()V

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->sha1:Lorg/spongycastle/crypto/Digest;

    .line 55
    const/16 v0, 0x14

    new-array v0, v0, [B

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

    return-void
.end method

.method private calculateCMSKeyChecksum([B)[B
    .registers 7

    .prologue
    const/16 v4, 0x8

    const/4 v3, 0x0

    .line 316
    new-array v0, v4, [B

    .line 318
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->sha1:Lorg/spongycastle/crypto/Digest;

    array-length v2, p1

    invoke-interface {v1, p1, v3, v2}, Lorg/spongycastle/crypto/Digest;->update([BII)V

    .line 319
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->sha1:Lorg/spongycastle/crypto/Digest;

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

    invoke-interface {v1, v2, v3}, Lorg/spongycastle/crypto/Digest;->doFinal([BI)I

    .line 321
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->digest:[B

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

    .line 323
    return-object v0
.end method

.method private checkCMSKeyChecksum([B[B)Z
    .registers 4

    .prologue
    .line 337
    invoke-direct {p0, p1}, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->calculateCMSKeyChecksum([B)[B

    move-result-object v0

    invoke-static {v0, p2}, Lorg/spongycastle/util/Arrays;->constantTimeAreEqual([B[B)Z

    move-result v0

    return v0
.end method

.method private static reverse([B)[B
    .registers 5

    .prologue
    .line 342
    array-length v0, p0

    new-array v1, v0, [B

    .line 343
    const/4 v0, 0x0

    :goto_4
    array-length v2, p0

    if-ge v0, v2, :cond_12

    .line 345
    array-length v2, p0

    add-int/lit8 v3, v0, 0x1

    sub-int/2addr v2, v3

    aget-byte v2, p0, v2

    aput-byte v2, v1, v0

    .line 343
    add-int/lit8 v0, v0, 0x1

    goto :goto_4

    .line 347
    :cond_12
    return-object v1
.end method


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

    .prologue
    .line 124
    const-string v0, "DESede"

    return-object v0
.end method

.method public init(ZLorg/spongycastle/crypto/CipherParameters;)V
    .registers 7

    .prologue
    const/16 v3, 0x8

    .line 66
    iput-boolean p1, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->forWrapping:Z

    .line 67
    new-instance v0, Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    new-instance v1, Lorg/spongycastle/crypto/engines/DESedeEngine;

    invoke-direct {v1}, Lorg/spongycastle/crypto/engines/DESedeEngine;-><init>()V

    invoke-direct {v0, v1}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;-><init>(Lorg/spongycastle/crypto/BlockCipher;)V

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    .line 70
    instance-of v0, p2, Lorg/spongycastle/crypto/params/ParametersWithRandom;

    if-eqz v0, :cond_3f

    .line 72
    check-cast p2, Lorg/spongycastle/crypto/params/ParametersWithRandom;

    .line 73
    invoke-virtual {p2}, Lorg/spongycastle/crypto/params/ParametersWithRandom;->getParameters()Lorg/spongycastle/crypto/CipherParameters;

    move-result-object v0

    .line 74
    invoke-virtual {p2}, Lorg/spongycastle/crypto/params/ParametersWithRandom;->getRandom()Ljava/security/SecureRandom;

    move-result-object v1

    .line 81
    :goto_1e
    instance-of v2, v0, Lorg/spongycastle/crypto/params/KeyParameter;

    if-eqz v2, :cond_47

    .line 83
    check-cast v0, Lorg/spongycastle/crypto/params/KeyParameter;

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

    .line 85
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->forWrapping:Z

    if-eqz v0, :cond_3e

    .line 90
    new-array v0, v3, [B

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

    .line 91
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    invoke-virtual {v1, v0}, Ljava/security/SecureRandom;->nextBytes([B)V

    .line 93
    new-instance v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

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

    invoke-direct {v0, v1, v2}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

    .line 115
    :cond_3e
    return-void

    .line 78
    :cond_3f
    new-instance v0, Ljava/security/SecureRandom;

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

    move-object v1, v0

    move-object v0, p2

    goto :goto_1e

    .line 96
    :cond_47
    instance-of v1, v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    if-eqz v1, :cond_3e

    .line 98
    check-cast v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

    .line 99
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV: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/DESedeWrapEngine;->iv:[B

    .line 100
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

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

    move-result-object v0

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

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

    .line 102
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->forWrapping:Z

    if-eqz v0, :cond_76

    .line 104
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    if-eqz v0, :cond_6e

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

    array-length v0, v0

    if-eq v0, v3, :cond_3e

    .line 106
    :cond_6e
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "IV is not 8 octets"

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

    throw v0

    .line 111
    :cond_76
    new-instance v0, Ljava/lang/IllegalArgumentException;

    const-string v1, "You should not supply an IV for unwrapping"

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

    throw v0
.end method

.method public unwrap([BII)[B
    .registers 11

    .prologue
    const/16 v6, 0x8

    const/4 v1, 0x0

    .line 210
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->forWrapping:Z

    if-eqz v0, :cond_f

    .line 212
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "Not set for unwrapping"

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

    throw v0

    .line 215
    :cond_f
    if-nez p1, :cond_19

    .line 217
    new-instance v0, Lorg/spongycastle/crypto/InvalidCipherTextException;

    const-string v1, "Null pointer as ciphertext"

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

    throw v0

    .line 220
    :cond_19
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->getBlockSize()I

    move-result v2

    .line 221
    rem-int v0, p3, v2

    if-eqz v0, :cond_38

    .line 223
    new-instance v0, Lorg/spongycastle/crypto/InvalidCipherTextException;

    new-instance v1, Ljava/lang/StringBuilder;

    const-string v3, "Ciphertext not multiple of "

    invoke-direct {v1, v3}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(I)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}, Lorg/spongycastle/crypto/InvalidCipherTextException;-><init>(Ljava/lang/String;)V

    throw v0

    .line 244
    :cond_38
    new-instance v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

    sget-object v4, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->IV2:[B

    invoke-direct {v0, v3, v4}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    .line 246
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v3, v1, v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 248
    new-array v3, p3, [B

    move v0, v1

    .line 250
    :goto_49
    if-eq v0, p3, :cond_54

    .line 252
    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    add-int v5, p2, v0

    invoke-virtual {v4, p1, v5, v3, v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->processBlock([BI[BI)I

    .line 250
    add-int/2addr v0, v2

    goto :goto_49

    .line 256
    :cond_54
    invoke-static {v3}, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->reverse([B)[B

    move-result-object v0

    .line 259
    new-array v3, v6, [B

    iput-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    .line 261
    array-length v3, v0

    add-int/lit8 v3, v3, -0x8

    new-array v3, v3, [B

    .line 263
    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    invoke-static {v0, v1, v4, v1, v6}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 264
    array-length v4, v0

    add-int/lit8 v4, v4, -0x8

    invoke-static {v0, v6, v3, v1, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 268
    new-instance v0, Lorg/spongycastle/crypto/params/ParametersWithIV;

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

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

    invoke-direct {v0, v4, v5}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

    .line 270
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

    invoke-virtual {v0, v1, v4}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 272
    array-length v0, v3

    new-array v4, v0, [B

    move v0, v1

    .line 274
    :goto_82
    array-length v5, v4

    if-eq v0, v5, :cond_8c

    .line 276
    iget-object v5, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v5, v3, v0, v4, v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->processBlock([BI[BI)I

    .line 274
    add-int/2addr v0, v2

    goto :goto_82

    .line 281
    :cond_8c
    array-length v0, v4

    add-int/lit8 v0, v0, -0x8

    new-array v0, v0, [B

    .line 282
    new-array v2, v6, [B

    .line 284
    array-length v3, v4

    add-int/lit8 v3, v3, -0x8

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

    .line 285
    array-length v3, v4

    add-int/lit8 v3, v3, -0x8

    invoke-static {v4, v3, v2, v1, v6}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 289
    invoke-direct {p0, v0, v2}, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->checkCMSKeyChecksum([B[B)Z

    move-result v1

    if-nez v1, :cond_ad

    .line 291
    new-instance v0, Lorg/spongycastle/crypto/InvalidCipherTextException;

    const-string v1, "Checksum inside ciphertext is corrupted"

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

    throw v0

    .line 296
    :cond_ad
    return-object v0
.end method

.method public wrap([BII)[B
    .registers 11

    .prologue
    const/4 v6, 0x1

    const/4 v1, 0x0

    .line 137
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->forWrapping:Z

    if-nez v0, :cond_e

    .line 139
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "Not initialized for wrapping"

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

    throw v0

    .line 142
    :cond_e
    new-array v0, p3, [B

    .line 144
    invoke-static {p1, p2, v0, v1, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 147
    invoke-direct {p0, v0}, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->calculateCMSKeyChecksum([B)[B

    move-result-object v2

    .line 150
    array-length v3, v2

    add-int/2addr v3, p3

    new-array v3, v3, [B

    .line 152
    invoke-static {v0, v1, v3, v1, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 153
    array-length v0, v2

    invoke-static {v2, v1, v3, p3, v0}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 158
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->getBlockSize()I

    move-result v2

    .line 160
    array-length v0, v3

    rem-int/2addr v0, v2

    if-eqz v0, :cond_34

    .line 162
    new-instance v0, Ljava/lang/IllegalStateException;

    const-string v1, "Not multiple of block length"

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

    throw v0

    .line 165
    :cond_34
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->paramPlusIV:Lorg/spongycastle/crypto/params/ParametersWithIV;

    invoke-virtual {v0, v6, v4}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 167
    array-length v0, v3

    new-array v4, v0, [B

    move v0, v1

    .line 169
    :goto_3f
    array-length v5, v3

    if-eq v0, v5, :cond_49

    .line 171
    iget-object v5, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v5, v3, v0, v4, v0}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->processBlock([BI[BI)I

    .line 169
    add-int/2addr v0, v2

    goto :goto_3f

    .line 175
    :cond_49
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    array-length v0, v0

    array-length v3, v4

    add-int/2addr v0, v3

    new-array v0, v0, [B

    .line 177
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

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

    array-length v5, v5

    invoke-static {v3, v1, v0, v1, v5}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 178
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->iv:[B

    array-length v3, v3

    array-length v5, v4

    invoke-static {v4, v1, v0, v3, v5}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 181
    invoke-static {v0}, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->reverse([B)[B

    move-result-object v0

    .line 186
    new-instance v3, Lorg/spongycastle/crypto/params/ParametersWithIV;

    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->param:Lorg/spongycastle/crypto/params/KeyParameter;

    sget-object v5, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->IV2:[B

    invoke-direct {v3, v4, v5}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    .line 188
    iget-object v4, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v4, v6, v3}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 190
    :goto_71
    array-length v3, v0

    if-eq v1, v3, :cond_7b

    .line 192
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/DESedeWrapEngine;->engine:Lorg/spongycastle/crypto/modes/CBCBlockCipher;

    invoke-virtual {v3, v0, v1, v0, v1}, Lorg/spongycastle/crypto/modes/CBCBlockCipher;->processBlock([BI[BI)I

    .line 190
    add-int/2addr v1, v2

    goto :goto_71

    .line 195
    :cond_7b
    return-object v0
.end method