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.VMPCKSA3Engine extends org.bouncycastle.crypto.engines.VMPCEngine
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.engines.VMPCKSA3Engine
  super_class: org.bouncycastle.crypto.engines.VMPCEngine
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
         0: .line 3
            aload 0 /* this */
            invokespecial org.bouncycastle.crypto.engines.VMPCEngine.<init>:()V
            return
        end local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/engines/VMPCKSA3Engine;

  public java.lang.String getAlgorithmName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
         0: .line 7
            ldc "VMPC-KSA3"
            areturn
        end local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/engines/VMPCKSA3Engine;

  protected void initKey(byte[], byte[]);
    descriptor: ([B[B)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=6, locals=5, args_size=3
        start local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
        start local 1 // byte[] keyBytes
        start local 2 // byte[] ivBytes
         0: .line 12
            aload 0 /* this */
            iconst_0
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
         1: .line 13
            aload 0 /* this */
            sipush 256
            newarray 8
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
         2: .line 14
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         3: goto 6
         4: .line 16
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* i */
            iload 3 /* i */
            i2b
            bastore
         5: .line 14
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         6: iload 3 /* i */
            sipush 256
            if_icmplt 4
        end local 3 // int i
         7: .line 19
            iconst_0
            istore 3 /* m */
        start local 3 // int m
         8: goto 14
         9: .line 21
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            iadd
            aload 1 /* keyBytes */
            iload 3 /* m */
            aload 1 /* keyBytes */
            arraylength
            irem
            baload
            iadd
            sipush 255
            iand
            baload
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
        10: .line 22
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            istore 4 /* temp */
        start local 4 // byte temp
        11: .line 23
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            baload
            bastore
        12: .line 24
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            iload 4 /* temp */
            bastore
        end local 4 // byte temp
        13: .line 19
            iinc 3 /* m */ 1
      StackMap locals:
      StackMap stack:
        14: iload 3 /* m */
            sipush 768
            if_icmplt 9
        end local 3 // int m
        15: .line 27
            iconst_0
            istore 3 /* m */
        start local 3 // int m
        16: goto 22
        17: .line 29
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            iadd
            aload 2 /* ivBytes */
            iload 3 /* m */
            aload 2 /* ivBytes */
            arraylength
            irem
            baload
            iadd
            sipush 255
            iand
            baload
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
        18: .line 30
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            istore 4 /* temp */
        start local 4 // byte temp
        19: .line 31
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            baload
            bastore
        20: .line 32
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            iload 4 /* temp */
            bastore
        end local 4 // byte temp
        21: .line 27
            iinc 3 /* m */ 1
      StackMap locals:
      StackMap stack:
        22: iload 3 /* m */
            sipush 768
            if_icmplt 17
        end local 3 // int m
        23: .line 35
            iconst_0
            istore 3 /* m */
        start local 3 // int m
        24: goto 30
        25: .line 37
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            iadd
            aload 1 /* keyBytes */
            iload 3 /* m */
            aload 1 /* keyBytes */
            arraylength
            irem
            baload
            iadd
            sipush 255
            iand
            baload
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
        26: .line 38
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            baload
            istore 4 /* temp */
        start local 4 // byte temp
        27: .line 39
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            iload 3 /* m */
            sipush 255
            iand
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            baload
            bastore
        28: .line 40
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.P:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.s:B
            sipush 255
            iand
            iload 4 /* temp */
            bastore
        end local 4 // byte temp
        29: .line 35
            iinc 3 /* m */ 1
      StackMap locals:
      StackMap stack:
        30: iload 3 /* m */
            sipush 768
            if_icmplt 25
        end local 3 // int m
        31: .line 43
            aload 0 /* this */
            iconst_0
            putfield org.bouncycastle.crypto.engines.VMPCKSA3Engine.n:B
        32: .line 44
            return
        end local 2 // byte[] ivBytes
        end local 1 // byte[] keyBytes
        end local 0 // org.bouncycastle.crypto.engines.VMPCKSA3Engine this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   33     0      this  Lorg/bouncycastle/crypto/engines/VMPCKSA3Engine;
            0   33     1  keyBytes  [B
            0   33     2   ivBytes  [B
            3    7     3         i  I
            8   15     3         m  I
           11   13     4      temp  B
           16   23     3         m  I
           19   21     4      temp  B
           24   31     3         m  I
           27   29     4      temp  B
    MethodParameters:
          Name  Flags
      keyBytes  
      ivBytes   
}
SourceFile: "VMPCKSA3Engine.java"