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 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
public class org.bouncycastle.crypto.engines.RFC3211WrapEngine implements org.bouncycastle.crypto.Wrapper
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.engines.RFC3211WrapEngine
  super_class: java.lang.Object
{
  private org.bouncycastle.crypto.modes.CBCBlockCipher engine;
    descriptor: Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.crypto.params.ParametersWithIV param;
    descriptor: Lorg/bouncycastle/crypto/params/ParametersWithIV;
    flags: (0x0002) ACC_PRIVATE

  private boolean forWrapping;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  private java.security.SecureRandom rand;
    descriptor: Ljava/security/SecureRandom;
    flags: (0x0002) ACC_PRIVATE

  public void <init>(org.bouncycastle.crypto.BlockCipher);
    descriptor: (Lorg/bouncycastle/crypto/BlockCipher;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
        start local 1 // org.bouncycastle.crypto.BlockCipher engine
         0: .line 27
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 29
            aload 0 /* this */
            new org.bouncycastle.crypto.modes.CBCBlockCipher
            dup
            aload 1 /* engine */
            invokespecial org.bouncycastle.crypto.modes.CBCBlockCipher.<init>:(Lorg/bouncycastle/crypto/BlockCipher;)V
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
         2: .line 30
            return
        end local 1 // org.bouncycastle.crypto.BlockCipher engine
        end local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0    this  Lorg/bouncycastle/crypto/engines/RFC3211WrapEngine;
            0    3     1  engine  Lorg/bouncycastle/crypto/BlockCipher;
    MethodParameters:
        Name  Flags
      engine  

  public void init(boolean, org.bouncycastle.crypto.CipherParameters);
    descriptor: (ZLorg/bouncycastle/crypto/CipherParameters;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=3
        start local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
        start local 1 // boolean forWrapping
        start local 2 // org.bouncycastle.crypto.CipherParameters param
         0: .line 36
            aload 0 /* this */
            iload 1 /* forWrapping */
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.forWrapping:Z
         1: .line 38
            aload 2 /* param */
            instanceof org.bouncycastle.crypto.params.ParametersWithRandom
            ifeq 8
         2: .line 40
            aload 2 /* param */
            checkcast org.bouncycastle.crypto.params.ParametersWithRandom
            astore 3 /* p */
        start local 3 // org.bouncycastle.crypto.params.ParametersWithRandom p
         3: .line 42
            aload 0 /* this */
            aload 3 /* p */
            invokevirtual org.bouncycastle.crypto.params.ParametersWithRandom.getRandom:()Ljava/security/SecureRandom;
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.rand:Ljava/security/SecureRandom;
         4: .line 44
            aload 3 /* p */
            invokevirtual org.bouncycastle.crypto.params.ParametersWithRandom.getParameters:()Lorg/bouncycastle/crypto/CipherParameters;
            instanceof org.bouncycastle.crypto.params.ParametersWithIV
            ifne 6
         5: .line 46
            new java.lang.IllegalArgumentException
            dup
            ldc "RFC3211Wrap requires an IV"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         6: .line 49
      StackMap locals: org.bouncycastle.crypto.params.ParametersWithRandom
      StackMap stack:
            aload 0 /* this */
            aload 3 /* p */
            invokevirtual org.bouncycastle.crypto.params.ParametersWithRandom.getParameters:()Lorg/bouncycastle/crypto/CipherParameters;
            checkcast org.bouncycastle.crypto.params.ParametersWithIV
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
        end local 3 // org.bouncycastle.crypto.params.ParametersWithRandom p
         7: .line 50
            goto 13
         8: .line 53
      StackMap locals:
      StackMap stack:
            iload 1 /* forWrapping */
            ifeq 10
         9: .line 55
            aload 0 /* this */
            invokestatic org.bouncycastle.crypto.CryptoServicesRegistrar.getSecureRandom:()Ljava/security/SecureRandom;
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.rand:Ljava/security/SecureRandom;
        10: .line 58
      StackMap locals:
      StackMap stack:
            aload 2 /* param */
            instanceof org.bouncycastle.crypto.params.ParametersWithIV
            ifne 12
        11: .line 60
            new java.lang.IllegalArgumentException
            dup
            ldc "RFC3211Wrap requires an IV"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        12: .line 63
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 2 /* param */
            checkcast org.bouncycastle.crypto.params.ParametersWithIV
            putfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
        13: .line 65
      StackMap locals:
      StackMap stack:
            return
        end local 2 // org.bouncycastle.crypto.CipherParameters param
        end local 1 // boolean forWrapping
        end local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   14     0         this  Lorg/bouncycastle/crypto/engines/RFC3211WrapEngine;
            0   14     1  forWrapping  Z
            0   14     2        param  Lorg/bouncycastle/crypto/CipherParameters;
            3    7     3            p  Lorg/bouncycastle/crypto/params/ParametersWithRandom;
    MethodParameters:
             Name  Flags
      forWrapping  
      param        

  public java.lang.String getAlgorithmName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
         0: .line 69
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.getUnderlyingCipher:()Lorg/bouncycastle/crypto/BlockCipher;
            invokeinterface org.bouncycastle.crypto.BlockCipher.getAlgorithmName:()Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc "/RFC3211Wrap"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/engines/RFC3211WrapEngine;

  public byte[] wrap(byte[], int, int);
    descriptor: ([BII)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=8, args_size=4
        start local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
        start local 1 // byte[] in
        start local 2 // int inOff
        start local 3 // int inLen
         0: .line 77
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.forWrapping:Z
            ifne 2
         1: .line 79
            new java.lang.IllegalStateException
            dup
            ldc "not set for wrapping"
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 82
      StackMap locals:
      StackMap stack:
            iload 3 /* inLen */
            sipush 255
            if_icmpgt 3
            iload 3 /* inLen */
            ifge 4
         3: .line 84
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "input must be from 0 to 255 bytes"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 87
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            iconst_1
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
         5: .line 89
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.getBlockSize:()I
            istore 4 /* blockSize */
        start local 4 // int blockSize
         6: .line 92
            iload 3 /* inLen */
            iconst_4
            iadd
            iload 4 /* blockSize */
            iconst_2
            imul
            if_icmpge 9
         7: .line 94
            iload 4 /* blockSize */
            iconst_2
            imul
            newarray 8
            astore 5 /* cekBlock */
        start local 5 // byte[] cekBlock
         8: .line 95
            goto 12
        end local 5 // byte[] cekBlock
         9: .line 98
      StackMap locals: int
      StackMap stack:
            iload 3 /* inLen */
            iconst_4
            iadd
            iload 4 /* blockSize */
            irem
            ifne 10
            iload 3 /* inLen */
            iconst_4
            iadd
            goto 11
      StackMap locals:
      StackMap stack:
        10: iload 3 /* inLen */
            iconst_4
            iadd
            iload 4 /* blockSize */
            idiv
            iconst_1
            iadd
            iload 4 /* blockSize */
            imul
      StackMap locals:
      StackMap stack: int
        11: newarray 8
            astore 5 /* cekBlock */
        start local 5 // byte[] cekBlock
        12: .line 101
      StackMap locals: byte[]
      StackMap stack:
            aload 5 /* cekBlock */
            iconst_0
            iload 3 /* inLen */
            i2b
            bastore
        13: .line 103
            aload 1 /* in */
            iload 2 /* inOff */
            aload 5 /* cekBlock */
            iconst_4
            iload 3 /* inLen */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        14: .line 105
            aload 5 /* cekBlock */
            arraylength
            iload 3 /* inLen */
            iconst_4
            iadd
            isub
            newarray 8
            astore 6 /* pad */
        start local 6 // byte[] pad
        15: .line 107
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.rand:Ljava/security/SecureRandom;
            aload 6 /* pad */
            invokevirtual java.security.SecureRandom.nextBytes:([B)V
        16: .line 108
            aload 6 /* pad */
            iconst_0
            aload 5 /* cekBlock */
            iload 3 /* inLen */
            iconst_4
            iadd
            aload 6 /* pad */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        17: .line 110
            aload 5 /* cekBlock */
            iconst_1
            aload 5 /* cekBlock */
            iconst_4
            baload
            iconst_m1
            ixor
            i2b
            bastore
        18: .line 111
            aload 5 /* cekBlock */
            iconst_2
            aload 5 /* cekBlock */
            iconst_5
            baload
            iconst_m1
            ixor
            i2b
            bastore
        19: .line 112
            aload 5 /* cekBlock */
            iconst_3
            aload 5 /* cekBlock */
            bipush 6
            baload
            iconst_m1
            ixor
            i2b
            bastore
        20: .line 114
            iconst_0
            istore 7 /* i */
        start local 7 // int i
        21: goto 24
        22: .line 116
      StackMap locals: byte[] int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            aload 5 /* cekBlock */
            iload 7 /* i */
            aload 5 /* cekBlock */
            iload 7 /* i */
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.processBlock:([BI[BI)I
            pop
        23: .line 114
            iload 7 /* i */
            iload 4 /* blockSize */
            iadd
            istore 7 /* i */
      StackMap locals:
      StackMap stack:
        24: iload 7 /* i */
            aload 5 /* cekBlock */
            arraylength
            if_icmplt 22
        end local 7 // int i
        25: .line 119
            iconst_0
            istore 7 /* i */
        start local 7 // int i
        26: goto 29
        27: .line 121
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            aload 5 /* cekBlock */
            iload 7 /* i */
            aload 5 /* cekBlock */
            iload 7 /* i */
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.processBlock:([BI[BI)I
            pop
        28: .line 119
            iload 7 /* i */
            iload 4 /* blockSize */
            iadd
            istore 7 /* i */
      StackMap locals:
      StackMap stack:
        29: iload 7 /* i */
            aload 5 /* cekBlock */
            arraylength
            if_icmplt 27
        end local 7 // int i
        30: .line 124
            aload 5 /* cekBlock */
            areturn
        end local 6 // byte[] pad
        end local 5 // byte[] cekBlock
        end local 4 // int blockSize
        end local 3 // int inLen
        end local 2 // int inOff
        end local 1 // byte[] in
        end local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   31     0       this  Lorg/bouncycastle/crypto/engines/RFC3211WrapEngine;
            0   31     1         in  [B
            0   31     2      inOff  I
            0   31     3      inLen  I
            6   31     4  blockSize  I
            8    9     5   cekBlock  [B
           12   31     5   cekBlock  [B
           15   31     6        pad  [B
           21   25     7          i  I
           26   30     7          i  I
    MethodParameters:
       Name  Flags
      in     
      inOff  
      inLen  

  public byte[] unwrap(byte[], int, int);
    descriptor: ([BII)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=12, args_size=4
        start local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
        start local 1 // byte[] in
        start local 2 // int inOff
        start local 3 // int inLen
         0: .line 133
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.forWrapping:Z
            ifeq 2
         1: .line 135
            new java.lang.IllegalStateException
            dup
            ldc "not set for unwrapping"
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 138
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.getBlockSize:()I
            istore 4 /* blockSize */
        start local 4 // int blockSize
         3: .line 140
            iload 3 /* inLen */
            iconst_2
            iload 4 /* blockSize */
            imul
            if_icmpge 5
         4: .line 142
            new org.bouncycastle.crypto.InvalidCipherTextException
            dup
            ldc "input too short"
            invokespecial org.bouncycastle.crypto.InvalidCipherTextException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 145
      StackMap locals: int
      StackMap stack:
            iload 3 /* inLen */
            newarray 8
            astore 5 /* cekBlock */
        start local 5 // byte[] cekBlock
         6: .line 146
            iload 4 /* blockSize */
            newarray 8
            astore 6 /* iv */
        start local 6 // byte[] iv
         7: .line 148
            aload 1 /* in */
            iload 2 /* inOff */
            aload 5 /* cekBlock */
            iconst_0
            iload 3 /* inLen */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         8: .line 149
            aload 1 /* in */
            iload 2 /* inOff */
            aload 6 /* iv */
            iconst_0
            aload 6 /* iv */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         9: .line 151
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            iconst_0
            new org.bouncycastle.crypto.params.ParametersWithIV
            dup
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
            invokevirtual org.bouncycastle.crypto.params.ParametersWithIV.getParameters:()Lorg/bouncycastle/crypto/CipherParameters;
            aload 6 /* iv */
            invokespecial org.bouncycastle.crypto.params.ParametersWithIV.<init>:(Lorg/bouncycastle/crypto/CipherParameters;[B)V
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
        10: .line 153
            iload 4 /* blockSize */
            istore 7 /* i */
        start local 7 // int i
        11: goto 14
        12: .line 155
      StackMap locals: byte[] byte[] int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            aload 5 /* cekBlock */
            iload 7 /* i */
            aload 5 /* cekBlock */
            iload 7 /* i */
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.processBlock:([BI[BI)I
            pop
        13: .line 153
            iload 7 /* i */
            iload 4 /* blockSize */
            iadd
            istore 7 /* i */
      StackMap locals:
      StackMap stack:
        14: iload 7 /* i */
            aload 5 /* cekBlock */
            arraylength
            if_icmplt 12
        end local 7 // int i
        15: .line 158
            aload 5 /* cekBlock */
            aload 5 /* cekBlock */
            arraylength
            aload 6 /* iv */
            arraylength
            isub
            aload 6 /* iv */
            iconst_0
            aload 6 /* iv */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        16: .line 160
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            iconst_0
            new org.bouncycastle.crypto.params.ParametersWithIV
            dup
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
            invokevirtual org.bouncycastle.crypto.params.ParametersWithIV.getParameters:()Lorg/bouncycastle/crypto/CipherParameters;
            aload 6 /* iv */
            invokespecial org.bouncycastle.crypto.params.ParametersWithIV.<init>:(Lorg/bouncycastle/crypto/CipherParameters;[B)V
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
        17: .line 162
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            aload 5 /* cekBlock */
            iconst_0
            aload 5 /* cekBlock */
            iconst_0
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.processBlock:([BI[BI)I
            pop
        18: .line 164
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.param:Lorg/bouncycastle/crypto/params/ParametersWithIV;
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.init:(ZLorg/bouncycastle/crypto/CipherParameters;)V
        19: .line 166
            iconst_0
            istore 7 /* i */
        start local 7 // int i
        20: goto 23
        21: .line 168
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.RFC3211WrapEngine.engine:Lorg/bouncycastle/crypto/modes/CBCBlockCipher;
            aload 5 /* cekBlock */
            iload 7 /* i */
            aload 5 /* cekBlock */
            iload 7 /* i */
            invokevirtual org.bouncycastle.crypto.modes.CBCBlockCipher.processBlock:([BI[BI)I
            pop
        22: .line 166
            iload 7 /* i */
            iload 4 /* blockSize */
            iadd
            istore 7 /* i */
      StackMap locals:
      StackMap stack:
        23: iload 7 /* i */
            aload 5 /* cekBlock */
            arraylength
            if_icmplt 21
        end local 7 // int i
        24: .line 171
            aload 5 /* cekBlock */
            iconst_0
            baload
            sipush 255
            iand
            aload 5 /* cekBlock */
            arraylength
            iconst_4
            isub
            if_icmple 25
            iconst_1
            goto 26
      StackMap locals:
      StackMap stack:
        25: iconst_0
      StackMap locals:
      StackMap stack: int
        26: istore 7 /* invalidLength */
        start local 7 // boolean invalidLength
        27: .line 174
            iload 7 /* invalidLength */
            ifeq 30
        28: .line 176
            aload 5 /* cekBlock */
            arraylength
            iconst_4
            isub
            newarray 8
            astore 8 /* key */
        start local 8 // byte[] key
        29: .line 177
            goto 31
        end local 8 // byte[] key
        30: .line 180
      StackMap locals: int
      StackMap stack:
            aload 5 /* cekBlock */
            iconst_0
            baload
            sipush 255
            iand
            newarray 8
            astore 8 /* key */
        start local 8 // byte[] key
        31: .line 183
      StackMap locals: byte[]
      StackMap stack:
            aload 5 /* cekBlock */
            iconst_4
            aload 8 /* key */
            iconst_0
            aload 8 /* key */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        32: .line 186
            iconst_0
            istore 9 /* nonEqual */
        start local 9 // int nonEqual
        33: .line 187
            iconst_0
            istore 10 /* i */
        start local 10 // int i
        34: goto 38
        35: .line 189
      StackMap locals: int int
      StackMap stack:
            aload 5 /* cekBlock */
            iconst_1
            iload 10 /* i */
            iadd
            baload
            iconst_m1
            ixor
            i2b
            istore 11 /* check */
        start local 11 // byte check
        36: .line 190
            iload 9 /* nonEqual */
            iload 11 /* check */
            aload 5 /* cekBlock */
            iconst_4
            iload 10 /* i */
            iadd
            baload
            ixor
            ior
            istore 9 /* nonEqual */
        end local 11 // byte check
        37: .line 187
            iinc 10 /* i */ 1
      StackMap locals:
      StackMap stack:
        38: iload 10 /* i */
            iconst_3
            if_icmpne 35
        end local 10 // int i
        39: .line 193
            aload 5 /* cekBlock */
            invokestatic org.bouncycastle.util.Arrays.clear:([B)V
        40: .line 195
            iload 9 /* nonEqual */
            ifeq 41
            iconst_1
            goto 42
      StackMap locals:
      StackMap stack:
        41: iconst_0
      StackMap locals:
      StackMap stack: int
        42: iload 7 /* invalidLength */
            ior
            ifeq 44
        43: .line 197
            new org.bouncycastle.crypto.InvalidCipherTextException
            dup
            ldc "wrapped key corrupted"
            invokespecial org.bouncycastle.crypto.InvalidCipherTextException.<init>:(Ljava/lang/String;)V
            athrow
        44: .line 200
      StackMap locals:
      StackMap stack:
            aload 8 /* key */
            areturn
        end local 9 // int nonEqual
        end local 8 // byte[] key
        end local 7 // boolean invalidLength
        end local 6 // byte[] iv
        end local 5 // byte[] cekBlock
        end local 4 // int blockSize
        end local 3 // int inLen
        end local 2 // int inOff
        end local 1 // byte[] in
        end local 0 // org.bouncycastle.crypto.engines.RFC3211WrapEngine this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   45     0           this  Lorg/bouncycastle/crypto/engines/RFC3211WrapEngine;
            0   45     1             in  [B
            0   45     2          inOff  I
            0   45     3          inLen  I
            3   45     4      blockSize  I
            6   45     5       cekBlock  [B
            7   45     6             iv  [B
           11   15     7              i  I
           20   24     7              i  I
           27   45     7  invalidLength  Z
           29   30     8            key  [B
           31   45     8            key  [B
           33   45     9       nonEqual  I
           34   39    10              i  I
           36   37    11          check  B
    Exceptions:
      throws org.bouncycastle.crypto.InvalidCipherTextException
    MethodParameters:
       Name  Flags
      in     
      inOff  
      inLen  
}
SourceFile: "RFC3211WrapEngine.java"