http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5. 
public class org.bouncycastle.crypto.engines.IESEngine
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.engines.IESEngine
  super_class: java.lang.Object
{
  org.bouncycastle.crypto.BasicAgreement agree;
    descriptor: Lorg/bouncycastle/crypto/BasicAgreement;
    flags: (0x0000) 

  org.bouncycastle.crypto.DerivationFunction kdf;
    descriptor: Lorg/bouncycastle/crypto/DerivationFunction;
    flags: (0x0000) 

  org.bouncycastle.crypto.Mac mac;
    descriptor: Lorg/bouncycastle/crypto/Mac;
    flags: (0x0000) 

  org.bouncycastle.crypto.BufferedBlockCipher cipher;
    descriptor: Lorg/bouncycastle/crypto/BufferedBlockCipher;
    flags: (0x0000) 

  byte[] macBuf;
    descriptor: [B
    flags: (0x0000) 

  boolean forEncryption;
    descriptor: Z
    flags: (0x0000) 

  org.bouncycastle.crypto.CipherParameters privParam;
    descriptor: Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0000) 

  org.bouncycastle.crypto.CipherParameters pubParam;
    descriptor: Lorg/bouncycastle/crypto/CipherParameters;
    flags: (0x0000) 

  org.bouncycastle.crypto.params.IESParameters param;
    descriptor: Lorg/bouncycastle/crypto/params/IESParameters;
    flags: (0x0000) 

  public void <init>(org.bouncycastle.crypto.BasicAgreement, org.bouncycastle.crypto.DerivationFunction, org.bouncycastle.crypto.Mac);
    descriptor: (Lorg/bouncycastle/crypto/BasicAgreement;Lorg/bouncycastle/crypto/DerivationFunction;Lorg/bouncycastle/crypto/Mac;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // org.bouncycastle.crypto.BasicAgreement agree
        start local 2 // org.bouncycastle.crypto.DerivationFunction kdf
        start local 3 // org.bouncycastle.crypto.Mac mac
         0: .line 40
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 45
            aload 0 /* this */
            aload 1 /* agree */
            putfield org.bouncycastle.crypto.engines.IESEngine.agree:Lorg/bouncycastle/crypto/BasicAgreement;
         2: .line 46
            aload 0 /* this */
            aload 2 /* kdf */
            putfield org.bouncycastle.crypto.engines.IESEngine.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
         3: .line 47
            aload 0 /* this */
            aload 3 /* mac */
            putfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
         4: .line 48
            aload 0 /* this */
            aload 3 /* mac */
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            newarray 8
            putfield org.bouncycastle.crypto.engines.IESEngine.macBuf:[B
         5: .line 49
            aload 0 /* this */
            aconst_null
            putfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
         6: .line 50
            return
        end local 3 // org.bouncycastle.crypto.Mac mac
        end local 2 // org.bouncycastle.crypto.DerivationFunction kdf
        end local 1 // org.bouncycastle.crypto.BasicAgreement agree
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    7     0   this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0    7     1  agree  Lorg/bouncycastle/crypto/BasicAgreement;
            0    7     2    kdf  Lorg/bouncycastle/crypto/DerivationFunction;
            0    7     3    mac  Lorg/bouncycastle/crypto/Mac;
    MethodParameters:
       Name  Flags
      agree  
      kdf    
      mac    

  public void <init>(org.bouncycastle.crypto.BasicAgreement, org.bouncycastle.crypto.DerivationFunction, org.bouncycastle.crypto.Mac, org.bouncycastle.crypto.BufferedBlockCipher);
    descriptor: (Lorg/bouncycastle/crypto/BasicAgreement;Lorg/bouncycastle/crypto/DerivationFunction;Lorg/bouncycastle/crypto/Mac;Lorg/bouncycastle/crypto/BufferedBlockCipher;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // org.bouncycastle.crypto.BasicAgreement agree
        start local 2 // org.bouncycastle.crypto.DerivationFunction kdf
        start local 3 // org.bouncycastle.crypto.Mac mac
        start local 4 // org.bouncycastle.crypto.BufferedBlockCipher cipher
         0: .line 61
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 67
            aload 0 /* this */
            aload 1 /* agree */
            putfield org.bouncycastle.crypto.engines.IESEngine.agree:Lorg/bouncycastle/crypto/BasicAgreement;
         2: .line 68
            aload 0 /* this */
            aload 2 /* kdf */
            putfield org.bouncycastle.crypto.engines.IESEngine.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
         3: .line 69
            aload 0 /* this */
            aload 3 /* mac */
            putfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
         4: .line 70
            aload 0 /* this */
            aload 3 /* mac */
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            newarray 8
            putfield org.bouncycastle.crypto.engines.IESEngine.macBuf:[B
         5: .line 71
            aload 0 /* this */
            aload 4 /* cipher */
            putfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
         6: .line 72
            return
        end local 4 // org.bouncycastle.crypto.BufferedBlockCipher cipher
        end local 3 // org.bouncycastle.crypto.Mac mac
        end local 2 // org.bouncycastle.crypto.DerivationFunction kdf
        end local 1 // org.bouncycastle.crypto.BasicAgreement agree
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    7     0    this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0    7     1   agree  Lorg/bouncycastle/crypto/BasicAgreement;
            0    7     2     kdf  Lorg/bouncycastle/crypto/DerivationFunction;
            0    7     3     mac  Lorg/bouncycastle/crypto/Mac;
            0    7     4  cipher  Lorg/bouncycastle/crypto/BufferedBlockCipher;
    MethodParameters:
        Name  Flags
      agree   
      kdf     
      mac     
      cipher  

  public void init(boolean, org.bouncycastle.crypto.CipherParameters, org.bouncycastle.crypto.CipherParameters, org.bouncycastle.crypto.CipherParameters);
    descriptor: (ZLorg/bouncycastle/crypto/CipherParameters;Lorg/bouncycastle/crypto/CipherParameters;Lorg/bouncycastle/crypto/CipherParameters;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // boolean forEncryption
        start local 2 // org.bouncycastle.crypto.CipherParameters privParam
        start local 3 // org.bouncycastle.crypto.CipherParameters pubParam
        start local 4 // org.bouncycastle.crypto.CipherParameters param
         0: .line 88
            aload 0 /* this */
            iload 1 /* forEncryption */
            putfield org.bouncycastle.crypto.engines.IESEngine.forEncryption:Z
         1: .line 89
            aload 0 /* this */
            aload 2 /* privParam */
            putfield org.bouncycastle.crypto.engines.IESEngine.privParam:Lorg/bouncycastle/crypto/CipherParameters;
         2: .line 90
            aload 0 /* this */
            aload 3 /* pubParam */
            putfield org.bouncycastle.crypto.engines.IESEngine.pubParam:Lorg/bouncycastle/crypto/CipherParameters;
         3: .line 91
            aload 0 /* this */
            aload 4 /* param */
            checkcast org.bouncycastle.crypto.params.IESParameters
            putfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
         4: .line 92
            return
        end local 4 // org.bouncycastle.crypto.CipherParameters param
        end local 3 // org.bouncycastle.crypto.CipherParameters pubParam
        end local 2 // org.bouncycastle.crypto.CipherParameters privParam
        end local 1 // boolean forEncryption
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    5     0           this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0    5     1  forEncryption  Z
            0    5     2      privParam  Lorg/bouncycastle/crypto/CipherParameters;
            0    5     3       pubParam  Lorg/bouncycastle/crypto/CipherParameters;
            0    5     4          param  Lorg/bouncycastle/crypto/CipherParameters;
    MethodParameters:
               Name  Flags
      forEncryption  
      privParam      
      pubParam       
      param          

  private byte[] decryptBlock(byte[], int, int, byte[]);
    descriptor: ([BII[B)[B
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=8, locals=13, args_size=5
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // byte[] in_enc
        start local 2 // int inOff
        start local 3 // int inLen
        start local 4 // byte[] z
         0: .line 101
            aconst_null
            astore 5 /* M */
        start local 5 // byte[] M
         1: .line 102
            aconst_null
            astore 6 /* macKey */
        start local 6 // org.bouncycastle.crypto.params.KeyParameter macKey
         2: .line 103
            new org.bouncycastle.crypto.params.KDFParameters
            dup
            aload 4 /* z */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getDerivationV:()[B
            invokespecial org.bouncycastle.crypto.params.KDFParameters.<init>:([B[B)V
            astore 7 /* kParam */
        start local 7 // org.bouncycastle.crypto.params.KDFParameters kParam
         3: .line 104
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getMacKeySize:()I
            istore 8 /* macKeySize */
        start local 8 // int macKeySize
         4: .line 106
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            aload 7 /* kParam */
            invokeinterface org.bouncycastle.crypto.DerivationFunction.init:(Lorg/bouncycastle/crypto/DerivationParameters;)V
         5: .line 108
            iload 3 /* inLen */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            isub
            istore 3 /* inLen */
         6: .line 110
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            ifnonnull 16
         7: .line 112
            aload 0 /* this */
            aload 7 /* kParam */
            iload 3 /* inLen */
            iload 8 /* macKeySize */
            bipush 8
            idiv
            iadd
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.generateKdfBytes:(Lorg/bouncycastle/crypto/params/KDFParameters;I)[B
            astore 9 /* buf */
        start local 9 // byte[] buf
         8: .line 114
            iload 3 /* inLen */
            newarray 8
            astore 5 /* M */
         9: .line 116
            iconst_0
            istore 10 /* i */
        start local 10 // int i
        10: goto 13
        11: .line 118
      StackMap locals: org.bouncycastle.crypto.engines.IESEngine byte[] int int byte[] byte[] org.bouncycastle.crypto.params.KeyParameter org.bouncycastle.crypto.params.KDFParameters int byte[] int
      StackMap stack:
            aload 5 /* M */
            iload 10 /* i */
            aload 1 /* in_enc */
            iload 2 /* inOff */
            iload 10 /* i */
            iadd
            baload
            aload 9 /* buf */
            iload 10 /* i */
            baload
            ixor
            i2b
            bastore
        12: .line 116
            iinc 10 /* i */ 1
      StackMap locals:
      StackMap stack:
        13: iload 10 /* i */
            iload 3 /* inLen */
            if_icmpne 11
        end local 10 // int i
        14: .line 121
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 9 /* buf */
            iload 3 /* inLen */
            iload 8 /* macKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            astore 6 /* macKey */
        end local 9 // byte[] buf
        15: .line 122
            goto 25
        16: .line 125
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            checkcast org.bouncycastle.crypto.params.IESWithCipherParameters
            invokevirtual org.bouncycastle.crypto.params.IESWithCipherParameters.getCipherKeySize:()I
            istore 9 /* cipherKeySize */
        start local 9 // int cipherKeySize
        17: .line 126
            aload 0 /* this */
            aload 7 /* kParam */
            iload 9 /* cipherKeySize */
            bipush 8
            idiv
            iload 8 /* macKeySize */
            bipush 8
            idiv
            iadd
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.generateKdfBytes:(Lorg/bouncycastle/crypto/params/KDFParameters;I)[B
            astore 10 /* buf */
        start local 10 // byte[] buf
        18: .line 128
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            iconst_0
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 10 /* buf */
            iconst_0
            iload 9 /* cipherKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
        19: .line 130
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            iload 3 /* inLen */
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.getOutputSize:(I)I
            newarray 8
            astore 11 /* tmp */
        start local 11 // byte[] tmp
        20: .line 132
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            aload 1 /* in_enc */
            iload 2 /* inOff */
            iload 3 /* inLen */
            aload 11 /* tmp */
            iconst_0
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.processBytes:([BII[BI)I
            istore 12 /* len */
        start local 12 // int len
        21: .line 134
            iload 12 /* len */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            aload 11 /* tmp */
            iload 12 /* len */
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.doFinal:([BI)I
            iadd
            istore 12 /* len */
        22: .line 136
            iload 12 /* len */
            newarray 8
            astore 5 /* M */
        23: .line 138
            aload 11 /* tmp */
            iconst_0
            aload 5 /* M */
            iconst_0
            iload 12 /* len */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        24: .line 140
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 10 /* buf */
            iload 9 /* cipherKeySize */
            bipush 8
            idiv
            iload 8 /* macKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            astore 6 /* macKey */
        end local 12 // int len
        end local 11 // byte[] tmp
        end local 10 // byte[] buf
        end local 9 // int cipherKeySize
        25: .line 143
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getEncodingV:()[B
            astore 9 /* macIV */
        start local 9 // byte[] macIV
        26: .line 145
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 6 /* macKey */
            invokeinterface org.bouncycastle.crypto.Mac.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
        27: .line 146
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 1 /* in_enc */
            iload 2 /* inOff */
            iload 3 /* inLen */
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
        28: .line 147
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 9 /* macIV */
            iconst_0
            aload 9 /* macIV */
            arraylength
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
        29: .line 148
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.macBuf:[B
            iconst_0
            invokeinterface org.bouncycastle.crypto.Mac.doFinal:([BI)I
            pop
        30: .line 150
            iload 2 /* inOff */
            iload 3 /* inLen */
            iadd
            istore 2 /* inOff */
        31: .line 152
            iconst_0
            istore 10 /* t */
        start local 10 // int t
        32: goto 36
        33: .line 154
      StackMap locals: byte[] int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.macBuf:[B
            iload 10 /* t */
            baload
            aload 1 /* in_enc */
            iload 2 /* inOff */
            iload 10 /* t */
            iadd
            baload
            if_icmpeq 35
        34: .line 156
            new org.bouncycastle.crypto.InvalidCipherTextException
            dup
            ldc "Mac codes failed to equal."
            invokespecial org.bouncycastle.crypto.InvalidCipherTextException.<init>:(Ljava/lang/String;)V
            athrow
        35: .line 152
      StackMap locals:
      StackMap stack:
            iinc 10 /* t */ 1
      StackMap locals:
      StackMap stack:
        36: iload 10 /* t */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.macBuf:[B
            arraylength
            if_icmplt 33
        end local 10 // int t
        37: .line 160
            aload 5 /* M */
            areturn
        end local 9 // byte[] macIV
        end local 8 // int macKeySize
        end local 7 // org.bouncycastle.crypto.params.KDFParameters kParam
        end local 6 // org.bouncycastle.crypto.params.KeyParameter macKey
        end local 5 // byte[] M
        end local 4 // byte[] z
        end local 3 // int inLen
        end local 2 // int inOff
        end local 1 // byte[] in_enc
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   38     0           this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0   38     1         in_enc  [B
            0   38     2          inOff  I
            0   38     3          inLen  I
            0   38     4              z  [B
            1   38     5              M  [B
            2   38     6         macKey  Lorg/bouncycastle/crypto/params/KeyParameter;
            3   38     7         kParam  Lorg/bouncycastle/crypto/params/KDFParameters;
            4   38     8     macKeySize  I
            8   15     9            buf  [B
           10   14    10              i  I
           17   25     9  cipherKeySize  I
           18   25    10            buf  [B
           20   25    11            tmp  [B
           21   25    12            len  I
           26   38     9          macIV  [B
           32   37    10              t  I
    Exceptions:
      throws org.bouncycastle.crypto.InvalidCipherTextException
    MethodParameters:
        Name  Flags
      in_enc  
      inOff   
      inLen   
      z       

  private byte[] encryptBlock(byte[], int, int, byte[]);
    descriptor: ([BII[B)[B
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=8, locals=14, args_size=5
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // byte[] in
        start local 2 // int inOff
        start local 3 // int inLen
        start local 4 // byte[] z
         0: .line 170
            aconst_null
            astore 5 /* C */
        start local 5 // byte[] C
         1: .line 171
            aconst_null
            astore 6 /* macKey */
        start local 6 // org.bouncycastle.crypto.params.KeyParameter macKey
         2: .line 172
            new org.bouncycastle.crypto.params.KDFParameters
            dup
            aload 4 /* z */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getDerivationV:()[B
            invokespecial org.bouncycastle.crypto.params.KDFParameters.<init>:([B[B)V
            astore 7 /* kParam */
        start local 7 // org.bouncycastle.crypto.params.KDFParameters kParam
         3: .line 173
            iconst_0
            istore 8 /* c_text_length */
        start local 8 // int c_text_length
         4: .line 174
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getMacKeySize:()I
            istore 9 /* macKeySize */
        start local 9 // int macKeySize
         5: .line 176
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            ifnonnull 16
         6: .line 178
            aload 0 /* this */
            aload 7 /* kParam */
            iload 3 /* inLen */
            iload 9 /* macKeySize */
            bipush 8
            idiv
            iadd
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.generateKdfBytes:(Lorg/bouncycastle/crypto/params/KDFParameters;I)[B
            astore 10 /* buf */
        start local 10 // byte[] buf
         7: .line 180
            iload 3 /* inLen */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            iadd
            newarray 8
            astore 5 /* C */
         8: .line 181
            iload 3 /* inLen */
            istore 8 /* c_text_length */
         9: .line 183
            iconst_0
            istore 11 /* i */
        start local 11 // int i
        10: goto 13
        11: .line 185
      StackMap locals: org.bouncycastle.crypto.engines.IESEngine byte[] int int byte[] byte[] org.bouncycastle.crypto.params.KeyParameter org.bouncycastle.crypto.params.KDFParameters int int byte[] int
      StackMap stack:
            aload 5 /* C */
            iload 11 /* i */
            aload 1 /* in */
            iload 2 /* inOff */
            iload 11 /* i */
            iadd
            baload
            aload 10 /* buf */
            iload 11 /* i */
            baload
            ixor
            i2b
            bastore
        12: .line 183
            iinc 11 /* i */ 1
      StackMap locals:
      StackMap stack:
        13: iload 11 /* i */
            iload 3 /* inLen */
            if_icmpne 11
        end local 11 // int i
        14: .line 188
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 10 /* buf */
            iload 3 /* inLen */
            iload 9 /* macKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            astore 6 /* macKey */
        end local 10 // byte[] buf
        15: .line 189
            goto 27
        16: .line 192
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            checkcast org.bouncycastle.crypto.params.IESWithCipherParameters
            invokevirtual org.bouncycastle.crypto.params.IESWithCipherParameters.getCipherKeySize:()I
            istore 10 /* cipherKeySize */
        start local 10 // int cipherKeySize
        17: .line 193
            aload 0 /* this */
            aload 7 /* kParam */
            iload 10 /* cipherKeySize */
            bipush 8
            idiv
            iload 9 /* macKeySize */
            bipush 8
            idiv
            iadd
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.generateKdfBytes:(Lorg/bouncycastle/crypto/params/KDFParameters;I)[B
            astore 11 /* buf */
        start local 11 // byte[] buf
        18: .line 195
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            iconst_1
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 11 /* buf */
            iconst_0
            iload 10 /* cipherKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
        19: .line 197
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            iload 3 /* inLen */
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.getOutputSize:(I)I
            istore 8 /* c_text_length */
        20: .line 199
            iload 8 /* c_text_length */
            newarray 8
            astore 12 /* tmp */
        start local 12 // byte[] tmp
        21: .line 201
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            aload 1 /* in */
            iload 2 /* inOff */
            iload 3 /* inLen */
            aload 12 /* tmp */
            iconst_0
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.processBytes:([BII[BI)I
            istore 13 /* len */
        start local 13 // int len
        22: .line 203
            iload 13 /* len */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.cipher:Lorg/bouncycastle/crypto/BufferedBlockCipher;
            aload 12 /* tmp */
            iload 13 /* len */
            invokevirtual org.bouncycastle.crypto.BufferedBlockCipher.doFinal:([BI)I
            iadd
            istore 13 /* len */
        23: .line 205
            iload 13 /* len */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            invokeinterface org.bouncycastle.crypto.Mac.getMacSize:()I
            iadd
            newarray 8
            astore 5 /* C */
        24: .line 206
            iload 13 /* len */
            istore 8 /* c_text_length */
        25: .line 208
            aload 12 /* tmp */
            iconst_0
            aload 5 /* C */
            iconst_0
            iload 13 /* len */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        26: .line 210
            new org.bouncycastle.crypto.params.KeyParameter
            dup
            aload 11 /* buf */
            iload 10 /* cipherKeySize */
            bipush 8
            idiv
            iload 9 /* macKeySize */
            bipush 8
            idiv
            invokespecial org.bouncycastle.crypto.params.KeyParameter.<init>:([BII)V
            astore 6 /* macKey */
        end local 13 // int len
        end local 12 // byte[] tmp
        end local 11 // byte[] buf
        end local 10 // int cipherKeySize
        27: .line 213
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.param:Lorg/bouncycastle/crypto/params/IESParameters;
            invokevirtual org.bouncycastle.crypto.params.IESParameters.getEncodingV:()[B
            astore 10 /* macIV */
        start local 10 // byte[] macIV
        28: .line 215
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 6 /* macKey */
            invokeinterface org.bouncycastle.crypto.Mac.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
        29: .line 216
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 5 /* C */
            iconst_0
            iload 8 /* c_text_length */
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
        30: .line 217
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 10 /* macIV */
            iconst_0
            aload 10 /* macIV */
            arraylength
            invokeinterface org.bouncycastle.crypto.Mac.update:([BII)V
        31: .line 221
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.mac:Lorg/bouncycastle/crypto/Mac;
            aload 5 /* C */
            iload 8 /* c_text_length */
            invokeinterface org.bouncycastle.crypto.Mac.doFinal:([BI)I
            pop
        32: .line 222
            aload 5 /* C */
            areturn
        end local 10 // byte[] macIV
        end local 9 // int macKeySize
        end local 8 // int c_text_length
        end local 7 // org.bouncycastle.crypto.params.KDFParameters kParam
        end local 6 // org.bouncycastle.crypto.params.KeyParameter macKey
        end local 5 // byte[] C
        end local 4 // byte[] z
        end local 3 // int inLen
        end local 2 // int inOff
        end local 1 // byte[] in
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   33     0           this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0   33     1             in  [B
            0   33     2          inOff  I
            0   33     3          inLen  I
            0   33     4              z  [B
            1   33     5              C  [B
            2   33     6         macKey  Lorg/bouncycastle/crypto/params/KeyParameter;
            3   33     7         kParam  Lorg/bouncycastle/crypto/params/KDFParameters;
            4   33     8  c_text_length  I
            5   33     9     macKeySize  I
            7   15    10            buf  [B
           10   14    11              i  I
           17   27    10  cipherKeySize  I
           18   27    11            buf  [B
           21   27    12            tmp  [B
           22   27    13            len  I
           28   33    10          macIV  [B
    Exceptions:
      throws org.bouncycastle.crypto.InvalidCipherTextException
    MethodParameters:
       Name  Flags
      in     
      inOff  
      inLen  
      z      

  private byte[] generateKdfBytes(org.bouncycastle.crypto.params.KDFParameters, int);
    descriptor: (Lorg/bouncycastle/crypto/params/KDFParameters;I)[B
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // org.bouncycastle.crypto.params.KDFParameters kParam
        start local 2 // int length
         0: .line 229
            iload 2 /* length */
            newarray 8
            astore 3 /* buf */
        start local 3 // byte[] buf
         1: .line 231
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            aload 1 /* kParam */
            invokeinterface org.bouncycastle.crypto.DerivationFunction.init:(Lorg/bouncycastle/crypto/DerivationParameters;)V
         2: .line 233
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.kdf:Lorg/bouncycastle/crypto/DerivationFunction;
            aload 3 /* buf */
            iconst_0
            aload 3 /* buf */
            arraylength
            invokeinterface org.bouncycastle.crypto.DerivationFunction.generateBytes:([BII)I
            pop
         3: .line 235
            aload 3 /* buf */
            areturn
        end local 3 // byte[] buf
        end local 2 // int length
        end local 1 // org.bouncycastle.crypto.params.KDFParameters kParam
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0    4     1  kParam  Lorg/bouncycastle/crypto/params/KDFParameters;
            0    4     2  length  I
            1    4     3     buf  [B
    MethodParameters:
        Name  Flags
      kParam  
      length  

  public byte[] processBlock(byte[], int, int);
    descriptor: ([BII)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=4
        start local 0 // org.bouncycastle.crypto.engines.IESEngine this
        start local 1 // byte[] in
        start local 2 // int inOff
        start local 3 // int inLen
         0: .line 244
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.agree:Lorg/bouncycastle/crypto/BasicAgreement;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.privParam:Lorg/bouncycastle/crypto/CipherParameters;
            invokeinterface org.bouncycastle.crypto.BasicAgreement.init:(Lorg/bouncycastle/crypto/CipherParameters;)V
         1: .line 246
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.agree:Lorg/bouncycastle/crypto/BasicAgreement;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.pubParam:Lorg/bouncycastle/crypto/CipherParameters;
            invokeinterface org.bouncycastle.crypto.BasicAgreement.calculateAgreement:(Lorg/bouncycastle/crypto/CipherParameters;)Ljava/math/BigInteger;
            astore 4 /* z */
        start local 4 // java.math.BigInteger z
         2: .line 248
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.IESEngine.forEncryption:Z
            ifeq 4
         3: .line 250
            aload 0 /* this */
            aload 1 /* in */
            iload 2 /* inOff */
            iload 3 /* inLen */
            aload 4 /* z */
            invokevirtual java.math.BigInteger.toByteArray:()[B
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.encryptBlock:([BII[B)[B
            areturn
         4: .line 254
      StackMap locals: java.math.BigInteger
      StackMap stack:
            aload 0 /* this */
            aload 1 /* in */
            iload 2 /* inOff */
            iload 3 /* inLen */
            aload 4 /* z */
            invokevirtual java.math.BigInteger.toByteArray:()[B
            invokevirtual org.bouncycastle.crypto.engines.IESEngine.decryptBlock:([BII[B)[B
            areturn
        end local 4 // java.math.BigInteger z
        end local 3 // int inLen
        end local 2 // int inOff
        end local 1 // byte[] in
        end local 0 // org.bouncycastle.crypto.engines.IESEngine this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lorg/bouncycastle/crypto/engines/IESEngine;
            0    5     1     in  [B
            0    5     2  inOff  I
            0    5     3  inLen  I
            2    5     4      z  Ljava/math/BigInteger;
    Exceptions:
      throws org.bouncycastle.crypto.InvalidCipherTextException
    MethodParameters:
       Name  Flags
      in     
      inOff  
      inLen  
}
SourceFile: "IESEngine.java"