IESEngine.smali

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


# instance fields
.field private IV:[B

.field V:[B

.field agree:Lorg/spongycastle/crypto/BasicAgreement;

.field cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

.field forEncryption:Z

.field kdf:Lorg/spongycastle/crypto/DerivationFunction;

.field private keyPairGenerator:Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;

.field private keyParser:Lorg/spongycastle/crypto/KeyParser;

.field mac:Lorg/spongycastle/crypto/Mac;

.field macBuf:[B

.field param:Lorg/spongycastle/crypto/params/IESParameters;

.field privParam:Lorg/spongycastle/crypto/CipherParameters;

.field pubParam:Lorg/spongycastle/crypto/CipherParameters;


# direct methods
.method public constructor <init>(Lorg/spongycastle/crypto/BasicAgreement;Lorg/spongycastle/crypto/DerivationFunction;Lorg/spongycastle/crypto/Mac;)V
    .registers 5

    .prologue
    .line 60
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 61
    iput-object p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->agree:Lorg/spongycastle/crypto/BasicAgreement;

    .line 62
    iput-object p2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    .line 63
    iput-object p3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    .line 64
    invoke-interface {p3}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v0

    new-array v0, v0, [B

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

    .line 65
    const/4 v0, 0x0

    iput-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    .line 66
    return-void
.end method

.method public constructor <init>(Lorg/spongycastle/crypto/BasicAgreement;Lorg/spongycastle/crypto/DerivationFunction;Lorg/spongycastle/crypto/Mac;Lorg/spongycastle/crypto/BufferedBlockCipher;)V
    .registers 6

    .prologue
    .line 83
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    .line 84
    iput-object p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->agree:Lorg/spongycastle/crypto/BasicAgreement;

    .line 85
    iput-object p2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    .line 86
    iput-object p3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    .line 87
    invoke-interface {p3}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v0

    new-array v0, v0, [B

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

    .line 88
    iput-object p4, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    .line 89
    return-void
.end method

.method private decryptBlock([BII)[B
    .registers 16

    .prologue
    const/4 v5, 0x0

    .line 276
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v1}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v1

    add-int/2addr v0, v1

    if-ge p3, v0, :cond_15

    .line 278
    new-instance v0, Lorg/spongycastle/crypto/InvalidCipherTextException;

    const-string v1, "Length of input must be greater than the MAC and V combined"

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

    throw v0

    .line 281
    :cond_15
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    if-nez v0, :cond_d0

    .line 284
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    sub-int v0, p3, v0

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v1}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v1

    sub-int/2addr v0, v1

    new-array v2, v0, [B

    .line 285
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/IESParameters;->getMacKeySize()I

    move-result v0

    div-int/lit8 v0, v0, 0x8

    new-array v1, v0, [B

    .line 286
    array-length v0, v2

    array-length v3, v1

    add-int/2addr v0, v3

    new-array v0, v0, [B

    .line 288
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    array-length v4, v0

    invoke-interface {v3, v0, v5, v4}, Lorg/spongycastle/crypto/DerivationFunction;->generateBytes([BII)I

    .line 290
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v3, v3

    if-eqz v3, :cond_61

    .line 292
    array-length v3, v1

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

    .line 293
    array-length v3, v1

    array-length v4, v2

    invoke-static {v0, v3, v2, v5, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 301
    :goto_4a
    array-length v0, v2

    new-array v4, v0, [B

    move v0, v5

    .line 303
    :goto_4e
    array-length v3, v2

    if-eq v0, v3, :cond_6b

    .line 305
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v3, v3

    add-int/2addr v3, p2

    add-int/2addr v3, v0

    aget-byte v3, p1, v3

    aget-byte v6, v2, v0

    xor-int/2addr v3, v6

    int-to-byte v3, v3

    aput-byte v3, v4, v0

    .line 303
    add-int/lit8 v0, v0, 0x1

    goto :goto_4e

    .line 297
    :cond_61
    array-length v3, v2

    invoke-static {v0, v5, v2, v5, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 298
    array-length v3, v2

    array-length v4, v1

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

    goto :goto_4a

    .line 308
    :cond_6b
    array-length v0, v2

    move-object v11, v1

    move v1, v0

    move-object v0, v11

    .line 338
    :goto_6f
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v2}, Lorg/spongycastle/crypto/params/IESParameters;->getEncodingV()[B

    move-result-object v3

    .line 339
    const/4 v2, 0x0

    .line 340
    iget-object v6, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v6, v6

    if-eqz v6, :cond_7f

    .line 342
    invoke-virtual {p0, v3}, Lorg/spongycastle/crypto/engines/IESEngine;->getLengthTag([B)[B

    move-result-object v2

    .line 346
    :cond_7f
    add-int v6, p2, p3

    .line 347
    iget-object v7, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v7}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v7

    sub-int v7, v6, v7

    invoke-static {p1, v7, v6}, Lorg/spongycastle/util/Arrays;->copyOfRange([BII)[B

    move-result-object v6

    .line 349
    array-length v7, v6

    new-array v7, v7, [B

    .line 350
    iget-object v8, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    new-instance v9, Lorg/spongycastle/crypto/params/KeyParameter;

    invoke-direct {v9, v0}, Lorg/spongycastle/crypto/params/KeyParameter;-><init>([B)V

    invoke-interface {v8, v9}, Lorg/spongycastle/crypto/Mac;->init(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 351
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    iget-object v8, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v8, v8

    add-int/2addr v8, p2

    iget-object v9, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v9, v9

    sub-int v9, p3, v9

    array-length v10, v7

    sub-int/2addr v9, v10

    invoke-interface {v0, p1, v8, v9}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 353
    if-eqz v3, :cond_b2

    .line 355
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    array-length v8, v3

    invoke-interface {v0, v3, v5, v8}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 357
    :cond_b2
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    if-eqz v0, :cond_bd

    .line 359
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    array-length v3, v2

    invoke-interface {v0, v2, v5, v3}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 361
    :cond_bd
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v0, v7, v5}, Lorg/spongycastle/crypto/Mac;->doFinal([BI)I

    .line 363
    invoke-static {v6, v7}, Lorg/spongycastle/util/Arrays;->constantTimeAreEqual([B[B)Z

    move-result v0

    if-nez v0, :cond_152

    .line 365
    new-instance v0, Lorg/spongycastle/crypto/InvalidCipherTextException;

    const-string v1, "Invalid MAC."

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

    throw v0

    .line 313
    :cond_d0
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

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

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/IESWithCipherParameters;->getCipherKeySize()I

    move-result v0

    div-int/lit8 v0, v0, 0x8

    new-array v0, v0, [B

    .line 314
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v1}, Lorg/spongycastle/crypto/params/IESParameters;->getMacKeySize()I

    move-result v1

    div-int/lit8 v1, v1, 0x8

    new-array v6, v1, [B

    .line 315
    array-length v1, v0

    array-length v2, v6

    add-int/2addr v1, v2

    new-array v1, v1, [B

    .line 317
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    array-length v3, v1

    invoke-interface {v2, v1, v5, v3}, Lorg/spongycastle/crypto/DerivationFunction;->generateBytes([BII)I

    .line 318
    array-length v2, v0

    invoke-static {v1, v5, v0, v5, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 319
    array-length v2, v0

    array-length v3, v6

    invoke-static {v1, v2, v6, v5, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 322
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->IV:[B

    if-eqz v1, :cond_147

    .line 324
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    new-instance v2, Lorg/spongycastle/crypto/params/ParametersWithIV;

    new-instance v3, Lorg/spongycastle/crypto/params/KeyParameter;

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

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

    invoke-direct {v2, v3, v0}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    invoke-virtual {v1, v5, v2}, Lorg/spongycastle/crypto/BufferedBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 331
    :goto_10f
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v1, v1

    sub-int v1, p3, v1

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

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

    move-result v2

    sub-int/2addr v1, v2

    invoke-virtual {v0, v1}, Lorg/spongycastle/crypto/BufferedBlockCipher;->getOutputSize(I)I

    move-result v0

    new-array v4, v0, [B

    .line 332
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v1, v1

    add-int v2, p2, v1

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v1, v1

    sub-int v1, p3, v1

    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v3}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v3

    sub-int v3, v1, v3

    move-object v1, p1

    invoke-virtual/range {v0 .. v5}, Lorg/spongycastle/crypto/BufferedBlockCipher;->processBytes([BII[BI)I

    move-result v0

    .line 333
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    invoke-virtual {v1, v4, v0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->doFinal([BI)I

    move-result v1

    add-int/2addr v0, v1

    move v1, v0

    move-object v0, v6

    goto/16 :goto_6f

    .line 328
    :cond_147
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    new-instance v2, Lorg/spongycastle/crypto/params/KeyParameter;

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

    invoke-virtual {v1, v5, v2}, Lorg/spongycastle/crypto/BufferedBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    goto :goto_10f

    .line 369
    :cond_152
    invoke-static {v4, v5, v1}, Lorg/spongycastle/util/Arrays;->copyOfRange([BII)[B

    move-result-object v0

    return-object v0
.end method

.method private encryptBlock([BII)[B
    .registers 12

    .prologue
    const/4 v4, 0x1

    const/4 v5, 0x0

    .line 178
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    if-nez v0, :cond_43

    .line 181
    new-array v2, p3, [B

    .line 182
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/IESParameters;->getMacKeySize()I

    move-result v0

    div-int/lit8 v0, v0, 0x8

    new-array v0, v0, [B

    .line 183
    array-length v1, v0

    add-int/2addr v1, p3

    new-array v1, v1, [B

    .line 185
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    array-length v4, v1

    invoke-interface {v3, v1, v5, v4}, Lorg/spongycastle/crypto/DerivationFunction;->generateBytes([BII)I

    .line 187
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v3, v3

    if-eqz v3, :cond_3b

    .line 189
    array-length v3, v0

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

    .line 190
    array-length v3, v0

    invoke-static {v1, v3, v2, v5, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 198
    :goto_29
    new-array v4, p3, [B

    move v1, v5

    .line 200
    :goto_2c
    if-eq v1, p3, :cond_9c

    .line 202
    add-int v3, p2, v1

    aget-byte v3, p1, v3

    aget-byte v6, v2, v1

    xor-int/2addr v3, v6

    int-to-byte v3, v3

    aput-byte v3, v4, v1

    .line 200
    add-int/lit8 v1, v1, 0x1

    goto :goto_2c

    .line 194
    :cond_3b
    invoke-static {v1, v5, v2, v5, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 195
    array-length v3, v0

    invoke-static {v1, p3, v0, v5, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    goto :goto_29

    .line 209
    :cond_43
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

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

    invoke-virtual {v0}, Lorg/spongycastle/crypto/params/IESWithCipherParameters;->getCipherKeySize()I

    move-result v0

    div-int/lit8 v0, v0, 0x8

    new-array v0, v0, [B

    .line 210
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v1}, Lorg/spongycastle/crypto/params/IESParameters;->getMacKeySize()I

    move-result v1

    div-int/lit8 v1, v1, 0x8

    new-array v6, v1, [B

    .line 211
    array-length v1, v0

    array-length v2, v6

    add-int/2addr v1, v2

    new-array v1, v1, [B

    .line 213
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    array-length v3, v1

    invoke-interface {v2, v1, v5, v3}, Lorg/spongycastle/crypto/DerivationFunction;->generateBytes([BII)I

    .line 214
    array-length v2, v0

    invoke-static {v1, v5, v0, v5, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 215
    array-length v2, v0

    array-length v3, v6

    invoke-static {v1, v2, v6, v5, v3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 218
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->IV:[B

    if-eqz v1, :cond_fb

    .line 220
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    new-instance v2, Lorg/spongycastle/crypto/params/ParametersWithIV;

    new-instance v3, Lorg/spongycastle/crypto/params/KeyParameter;

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

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

    invoke-direct {v2, v3, v0}, Lorg/spongycastle/crypto/params/ParametersWithIV;-><init>(Lorg/spongycastle/crypto/CipherParameters;[B)V

    invoke-virtual {v1, v4, v2}, Lorg/spongycastle/crypto/BufferedBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    .line 227
    :goto_82
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    invoke-virtual {v0, p3}, Lorg/spongycastle/crypto/BufferedBlockCipher;->getOutputSize(I)I

    move-result v0

    new-array v4, v0, [B

    .line 228
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    move-object v1, p1

    move v2, p2

    move v3, p3

    invoke-virtual/range {v0 .. v5}, Lorg/spongycastle/crypto/BufferedBlockCipher;->processBytes([BII[BI)I

    move-result v0

    .line 229
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    invoke-virtual {v1, v4, v0}, Lorg/spongycastle/crypto/BufferedBlockCipher;->doFinal([BI)I

    move-result v1

    add-int p3, v0, v1

    move-object v0, v6

    .line 234
    :cond_9c
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v1}, Lorg/spongycastle/crypto/params/IESParameters;->getEncodingV()[B

    move-result-object v2

    .line 235
    const/4 v1, 0x0

    .line 236
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v3, v3

    if-eqz v3, :cond_ac

    .line 238
    invoke-virtual {p0, v2}, Lorg/spongycastle/crypto/engines/IESEngine;->getLengthTag([B)[B

    move-result-object v1

    .line 243
    :cond_ac
    iget-object v3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v3}, Lorg/spongycastle/crypto/Mac;->getMacSize()I

    move-result v3

    new-array v3, v3, [B

    .line 245
    iget-object v6, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    new-instance v7, Lorg/spongycastle/crypto/params/KeyParameter;

    invoke-direct {v7, v0}, Lorg/spongycastle/crypto/params/KeyParameter;-><init>([B)V

    invoke-interface {v6, v7}, Lorg/spongycastle/crypto/Mac;->init(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 246
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    array-length v6, v4

    invoke-interface {v0, v4, v5, v6}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 247
    if-eqz v2, :cond_cc

    .line 249
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    array-length v6, v2

    invoke-interface {v0, v2, v5, v6}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 251
    :cond_cc
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    if-eqz v0, :cond_d7

    .line 253
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    array-length v2, v1

    invoke-interface {v0, v1, v5, v2}, Lorg/spongycastle/crypto/Mac;->update([BII)V

    .line 255
    :cond_d7
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    invoke-interface {v0, v3, v5}, Lorg/spongycastle/crypto/Mac;->doFinal([BI)I

    .line 259
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    add-int/2addr v0, p3

    array-length v1, v3

    add-int/2addr v0, v1

    new-array v0, v0, [B

    .line 260
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

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

    array-length v2, v2

    invoke-static {v1, v5, v0, v5, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 261
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v1, v1

    invoke-static {v4, v5, v0, v1, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 262
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v1, v1

    add-int/2addr v1, p3

    array-length v2, v3

    invoke-static {v3, v5, v0, v1, v2}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V

    .line 263
    return-object v0

    .line 224
    :cond_fb
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    new-instance v2, Lorg/spongycastle/crypto/params/KeyParameter;

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

    invoke-virtual {v1, v4, v2}, Lorg/spongycastle/crypto/BufferedBlockCipher;->init(ZLorg/spongycastle/crypto/CipherParameters;)V

    goto/16 :goto_82
.end method

.method private extractParams(Lorg/spongycastle/crypto/CipherParameters;)V
    .registers 3

    .prologue
    .line 147
    instance-of v0, p1, Lorg/spongycastle/crypto/params/ParametersWithIV;

    if-eqz v0, :cond_18

    move-object v0, p1

    .line 149
    check-cast v0, 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/IESEngine;->IV:[B

    .line 150
    check-cast p1, Lorg/spongycastle/crypto/params/ParametersWithIV;

    invoke-virtual {p1}, Lorg/spongycastle/crypto/params/ParametersWithIV;->getParameters()Lorg/spongycastle/crypto/CipherParameters;

    move-result-object v0

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

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

    .line 157
    :goto_17
    return-void

    .line 154
    :cond_18
    const/4 v0, 0x0

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

    .line 155
    check-cast p1, Lorg/spongycastle/crypto/params/IESParameters;

    iput-object p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    goto :goto_17
.end method


# virtual methods
.method public getCipher()Lorg/spongycastle/crypto/BufferedBlockCipher;
    .registers 2

    .prologue
    .line 161
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->cipher:Lorg/spongycastle/crypto/BufferedBlockCipher;

    return-object v0
.end method

.method protected getLengthTag([B)[B
    .registers 6

    .prologue
    .line 441
    const/16 v0, 0x8

    new-array v0, v0, [B

    .line 442
    if-eqz p1, :cond_e

    .line 444
    array-length v1, p1

    int-to-long v2, v1

    const/4 v1, 0x3

    shl-long/2addr v2, v1

    const/4 v1, 0x0

    invoke-static {v2, v3, v0, v1}, Lorg/spongycastle/util/Pack;->longToBigEndian(J[BI)V

    .line 446
    :cond_e
    return-object v0
.end method

.method public getMac()Lorg/spongycastle/crypto/Mac;
    .registers 2

    .prologue
    .line 166
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->mac:Lorg/spongycastle/crypto/Mac;

    return-object v0
.end method

.method public init(Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;Lorg/spongycastle/crypto/CipherParameters;Lorg/spongycastle/crypto/KeyParser;)V
    .registers 5

    .prologue
    .line 138
    const/4 v0, 0x0

    iput-boolean v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->forEncryption:Z

    .line 139
    iput-object p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->privParam:Lorg/spongycastle/crypto/CipherParameters;

    .line 140
    iput-object p3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyParser:Lorg/spongycastle/crypto/KeyParser;

    .line 142
    invoke-direct {p0, p2}, Lorg/spongycastle/crypto/engines/IESEngine;->extractParams(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 143
    return-void
.end method

.method public init(Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;Lorg/spongycastle/crypto/CipherParameters;Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;)V
    .registers 5

    .prologue
    .line 122
    const/4 v0, 0x1

    iput-boolean v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->forEncryption:Z

    .line 123
    iput-object p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->pubParam:Lorg/spongycastle/crypto/CipherParameters;

    .line 124
    iput-object p3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyPairGenerator:Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;

    .line 126
    invoke-direct {p0, p2}, Lorg/spongycastle/crypto/engines/IESEngine;->extractParams(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 127
    return-void
.end method

.method public init(ZLorg/spongycastle/crypto/CipherParameters;Lorg/spongycastle/crypto/CipherParameters;Lorg/spongycastle/crypto/CipherParameters;)V
    .registers 6

    .prologue
    .line 105
    iput-boolean p1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->forEncryption:Z

    .line 106
    iput-object p2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->privParam:Lorg/spongycastle/crypto/CipherParameters;

    .line 107
    iput-object p3, p0, Lorg/spongycastle/crypto/engines/IESEngine;->pubParam:Lorg/spongycastle/crypto/CipherParameters;

    .line 108
    const/4 v0, 0x0

    new-array v0, v0, [B

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

    .line 110
    invoke-direct {p0, p4}, Lorg/spongycastle/crypto/engines/IESEngine;->extractParams(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 111
    return-void
.end method

.method public processBlock([BII)[B
    .registers 8

    .prologue
    const/4 v3, 0x0

    .line 379
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->forEncryption:Z

    if-eqz v0, :cond_63

    .line 381
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyPairGenerator:Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;

    if-eqz v0, :cond_1f

    .line 383
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyPairGenerator:Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;

    invoke-virtual {v0}, Lorg/spongycastle/crypto/generators/EphemeralKeyPairGenerator;->generate()Lorg/spongycastle/crypto/EphemeralKeyPair;

    move-result-object v0

    .line 385
    invoke-virtual {v0}, Lorg/spongycastle/crypto/EphemeralKeyPair;->getKeyPair()Lorg/spongycastle/crypto/AsymmetricCipherKeyPair;

    move-result-object v1

    invoke-virtual {v1}, Lorg/spongycastle/crypto/AsymmetricCipherKeyPair;->getPrivate()Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

    move-result-object v1

    iput-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->privParam:Lorg/spongycastle/crypto/CipherParameters;

    .line 386
    invoke-virtual {v0}, Lorg/spongycastle/crypto/EphemeralKeyPair;->getEncodedPublicKey()[B

    move-result-object v0

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

    .line 410
    :cond_1f
    :goto_1f
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->agree:Lorg/spongycastle/crypto/BasicAgreement;

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->privParam:Lorg/spongycastle/crypto/CipherParameters;

    invoke-interface {v0, v1}, Lorg/spongycastle/crypto/BasicAgreement;->init(Lorg/spongycastle/crypto/CipherParameters;)V

    .line 411
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->agree:Lorg/spongycastle/crypto/BasicAgreement;

    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->pubParam:Lorg/spongycastle/crypto/CipherParameters;

    invoke-interface {v0, v1}, Lorg/spongycastle/crypto/BasicAgreement;->calculateAgreement(Lorg/spongycastle/crypto/CipherParameters;)Ljava/math/BigInteger;

    move-result-object v0

    .line 412
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->agree:Lorg/spongycastle/crypto/BasicAgreement;

    invoke-interface {v1}, Lorg/spongycastle/crypto/BasicAgreement;->getFieldSize()I

    move-result v1

    invoke-static {v1, v0}, Lorg/spongycastle/util/BigIntegers;->asUnsignedByteArray(ILjava/math/BigInteger;)[B

    move-result-object v1

    .line 415
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    array-length v0, v0

    if-eqz v0, :cond_47

    .line 417
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->V:[B

    invoke-static {v0, v1}, Lorg/spongycastle/util/Arrays;->concatenate([B[B)[B

    move-result-object v0

    .line 418
    invoke-static {v1, v3}, Lorg/spongycastle/util/Arrays;->fill([BB)V

    move-object v1, v0

    .line 425
    :cond_47
    :try_start_47
    new-instance v0, Lorg/spongycastle/crypto/params/KDFParameters;

    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->param:Lorg/spongycastle/crypto/params/IESParameters;

    invoke-virtual {v2}, Lorg/spongycastle/crypto/params/IESParameters;->getDerivationV()[B

    move-result-object v2

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

    .line 426
    iget-object v2, p0, Lorg/spongycastle/crypto/engines/IESEngine;->kdf:Lorg/spongycastle/crypto/DerivationFunction;

    invoke-interface {v2, v0}, Lorg/spongycastle/crypto/DerivationFunction;->init(Lorg/spongycastle/crypto/DerivationParameters;)V

    .line 428
    iget-boolean v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->forEncryption:Z

    if-eqz v0, :cond_9c

    .line 429
    invoke-direct {p0, p1, p2, p3}, Lorg/spongycastle/crypto/engines/IESEngine;->encryptBlock([BII)[B
    :try_end_5e
    .catchall {:try_start_47 .. :try_end_5e} :catchall_a1

    move-result-object v0

    .line 434
    :goto_5f
    invoke-static {v1, v3}, Lorg/spongycastle/util/Arrays;->fill([BB)V

    return-object v0

    .line 391
    :cond_63
    iget-object v0, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyParser:Lorg/spongycastle/crypto/KeyParser;

    if-eqz v0, :cond_1f

    .line 393
    new-instance v0, Ljava/io/ByteArrayInputStream;

    invoke-direct {v0, p1, p2, p3}, Ljava/io/ByteArrayInputStream;-><init>([BII)V

    .line 397
    :try_start_6c
    iget-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->keyParser:Lorg/spongycastle/crypto/KeyParser;

    invoke-interface {v1, v0}, Lorg/spongycastle/crypto/KeyParser;->readKey(Ljava/io/InputStream;)Lorg/spongycastle/crypto/params/AsymmetricKeyParameter;

    move-result-object v1

    iput-object v1, p0, Lorg/spongycastle/crypto/engines/IESEngine;->pubParam:Lorg/spongycastle/crypto/CipherParameters;
    :try_end_74
    .catch Ljava/io/IOException; {:try_start_6c .. :try_end_74} :catch_82

    .line 404
    invoke-virtual {v0}, Ljava/io/ByteArrayInputStream;->available()I

    move-result v0

    sub-int v0, p3, v0

    .line 405
    add-int/2addr v0, p2

    invoke-static {p1, p2, v0}, Lorg/spongycastle/util/Arrays;->copyOfRange([BII)[B

    move-result-object v0

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

    goto :goto_1f

    .line 399
    :catch_82
    move-exception v0

    .line 401
    new-instance v1, Lorg/spongycastle/crypto/InvalidCipherTextException;

    new-instance v2, Ljava/lang/StringBuilder;

    const-string v3, "unable to recover ephemeral public key: "

    invoke-direct {v2, v3}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

    invoke-virtual {v0}, Ljava/io/IOException;->getMessage()Ljava/lang/String;

    move-result-object v3

    invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v2

    invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v2

    invoke-direct {v1, v2, v0}, Lorg/spongycastle/crypto/InvalidCipherTextException;-><init>(Ljava/lang/String;Ljava/lang/Throwable;)V

    throw v1

    .line 430
    :cond_9c
    :try_start_9c
    invoke-direct {p0, p1, p2, p3}, Lorg/spongycastle/crypto/engines/IESEngine;->decryptBlock([BII)[B
    :try_end_9f
    .catchall {:try_start_9c .. :try_end_9f} :catchall_a1

    move-result-object v0

    goto :goto_5f

    .line 434
    :catchall_a1
    move-exception v0

    invoke-static {v1, v3}, Lorg/spongycastle/util/Arrays;->fill([BB)V

    throw v0
.end method