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.asn1.pkcs.MacData extends org.bouncycastle.asn1.ASN1Encodable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.asn1.pkcs.MacData
  super_class: org.bouncycastle.asn1.ASN1Encodable
{
  private static final java.math.BigInteger ONE;
    descriptor: Ljava/math/BigInteger;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  org.bouncycastle.asn1.x509.DigestInfo digInfo;
    descriptor: Lorg/bouncycastle/asn1/x509/DigestInfo;
    flags: (0x0000) 

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

  java.math.BigInteger iterationCount;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0000) 

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 18
            lconst_1
            invokestatic java.math.BigInteger.valueOf:(J)Ljava/math/BigInteger;
            putstatic org.bouncycastle.asn1.pkcs.MacData.ONE:Ljava/math/BigInteger;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static org.bouncycastle.asn1.pkcs.MacData getInstance(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lorg/bouncycastle/asn1/pkcs/MacData;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // java.lang.Object obj
         0: .line 27
            aload 0 /* obj */
            instanceof org.bouncycastle.asn1.pkcs.MacData
            ifeq 2
         1: .line 29
            aload 0 /* obj */
            checkcast org.bouncycastle.asn1.pkcs.MacData
            areturn
         2: .line 31
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            instanceof org.bouncycastle.asn1.ASN1Sequence
            ifeq 4
         3: .line 33
            new org.bouncycastle.asn1.pkcs.MacData
            dup
            aload 0 /* obj */
            checkcast org.bouncycastle.asn1.ASN1Sequence
            invokespecial org.bouncycastle.asn1.pkcs.MacData.<init>:(Lorg/bouncycastle/asn1/ASN1Sequence;)V
            areturn
         4: .line 36
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "unknown object in factory: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* obj */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // java.lang.Object obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0   obj  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      obj   

  public void <init>(org.bouncycastle.asn1.ASN1Sequence);
    descriptor: (Lorg/bouncycastle/asn1/ASN1Sequence;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
        start local 1 // org.bouncycastle.asn1.ASN1Sequence seq
         0: .line 39
            aload 0 /* this */
            invokespecial org.bouncycastle.asn1.ASN1Encodable.<init>:()V
         1: .line 42
            aload 0 /* this */
            aload 1 /* seq */
            iconst_0
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjectAt:(I)Lorg/bouncycastle/asn1/DEREncodable;
            invokestatic org.bouncycastle.asn1.x509.DigestInfo.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/x509/DigestInfo;
            putfield org.bouncycastle.asn1.pkcs.MacData.digInfo:Lorg/bouncycastle/asn1/x509/DigestInfo;
         2: .line 44
            aload 0 /* this */
            aload 1 /* seq */
            iconst_1
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjectAt:(I)Lorg/bouncycastle/asn1/DEREncodable;
            checkcast org.bouncycastle.asn1.ASN1OctetString
            invokevirtual org.bouncycastle.asn1.ASN1OctetString.getOctets:()[B
            putfield org.bouncycastle.asn1.pkcs.MacData.salt:[B
         3: .line 46
            aload 1 /* seq */
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.size:()I
            iconst_3
            if_icmpne 6
         4: .line 48
            aload 0 /* this */
            aload 1 /* seq */
            iconst_2
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjectAt:(I)Lorg/bouncycastle/asn1/DEREncodable;
            checkcast org.bouncycastle.asn1.DERInteger
            invokevirtual org.bouncycastle.asn1.DERInteger.getValue:()Ljava/math/BigInteger;
            putfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
         5: .line 49
            goto 7
         6: .line 52
      StackMap locals: org.bouncycastle.asn1.pkcs.MacData org.bouncycastle.asn1.ASN1Sequence
      StackMap stack:
            aload 0 /* this */
            getstatic org.bouncycastle.asn1.pkcs.MacData.ONE:Ljava/math/BigInteger;
            putfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
         7: .line 54
      StackMap locals:
      StackMap stack:
            return
        end local 1 // org.bouncycastle.asn1.ASN1Sequence seq
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/bouncycastle/asn1/pkcs/MacData;
            0    8     1   seq  Lorg/bouncycastle/asn1/ASN1Sequence;
    MethodParameters:
      Name  Flags
      seq   

  public void <init>(org.bouncycastle.asn1.x509.DigestInfo, byte[], int);
    descriptor: (Lorg/bouncycastle/asn1/x509/DigestInfo;[BI)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
        start local 1 // org.bouncycastle.asn1.x509.DigestInfo digInfo
        start local 2 // byte[] salt
        start local 3 // int iterationCount
         0: .line 56
            aload 0 /* this */
            invokespecial org.bouncycastle.asn1.ASN1Encodable.<init>:()V
         1: .line 61
            aload 0 /* this */
            aload 1 /* digInfo */
            putfield org.bouncycastle.asn1.pkcs.MacData.digInfo:Lorg/bouncycastle/asn1/x509/DigestInfo;
         2: .line 62
            aload 0 /* this */
            aload 2 /* salt */
            putfield org.bouncycastle.asn1.pkcs.MacData.salt:[B
         3: .line 63
            aload 0 /* this */
            iload 3 /* iterationCount */
            i2l
            invokestatic java.math.BigInteger.valueOf:(J)Ljava/math/BigInteger;
            putfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
         4: .line 64
            return
        end local 3 // int iterationCount
        end local 2 // byte[] salt
        end local 1 // org.bouncycastle.asn1.x509.DigestInfo digInfo
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    5     0            this  Lorg/bouncycastle/asn1/pkcs/MacData;
            0    5     1         digInfo  Lorg/bouncycastle/asn1/x509/DigestInfo;
            0    5     2            salt  [B
            0    5     3  iterationCount  I
    MethodParameters:
                Name  Flags
      digInfo         
      salt            
      iterationCount  

  public org.bouncycastle.asn1.x509.DigestInfo getMac();
    descriptor: ()Lorg/bouncycastle/asn1/x509/DigestInfo;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
         0: .line 68
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.digInfo:Lorg/bouncycastle/asn1/x509/DigestInfo;
            areturn
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/pkcs/MacData;

  public byte[] getSalt();
    descriptor: ()[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
         0: .line 73
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.salt:[B
            areturn
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/pkcs/MacData;

  public java.math.BigInteger getIterationCount();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
         0: .line 78
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/pkcs/MacData;

  public org.bouncycastle.asn1.DERObject toASN1Object();
    descriptor: ()Lorg/bouncycastle/asn1/DERObject;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.MacData this
         0: .line 94
            new org.bouncycastle.asn1.ASN1EncodableVector
            dup
            invokespecial org.bouncycastle.asn1.ASN1EncodableVector.<init>:()V
            astore 1 /* v */
        start local 1 // org.bouncycastle.asn1.ASN1EncodableVector v
         1: .line 96
            aload 1 /* v */
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.digInfo:Lorg/bouncycastle/asn1/x509/DigestInfo;
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.add:(Lorg/bouncycastle/asn1/DEREncodable;)V
         2: .line 97
            aload 1 /* v */
            new org.bouncycastle.asn1.DEROctetString
            dup
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.salt:[B
            invokespecial org.bouncycastle.asn1.DEROctetString.<init>:([B)V
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.add:(Lorg/bouncycastle/asn1/DEREncodable;)V
         3: .line 99
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
            getstatic org.bouncycastle.asn1.pkcs.MacData.ONE:Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifne 5
         4: .line 101
            aload 1 /* v */
            new org.bouncycastle.asn1.DERInteger
            dup
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.MacData.iterationCount:Ljava/math/BigInteger;
            invokespecial org.bouncycastle.asn1.DERInteger.<init>:(Ljava/math/BigInteger;)V
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.add:(Lorg/bouncycastle/asn1/DEREncodable;)V
         5: .line 104
      StackMap locals: org.bouncycastle.asn1.ASN1EncodableVector
      StackMap stack:
            new org.bouncycastle.asn1.DERSequence
            dup
            aload 1 /* v */
            invokespecial org.bouncycastle.asn1.DERSequence.<init>:(Lorg/bouncycastle/asn1/ASN1EncodableVector;)V
            areturn
        end local 1 // org.bouncycastle.asn1.ASN1EncodableVector v
        end local 0 // org.bouncycastle.asn1.pkcs.MacData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/bouncycastle/asn1/pkcs/MacData;
            1    6     1     v  Lorg/bouncycastle/asn1/ASN1EncodableVector;
}
SourceFile: "MacData.java"