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.PBES2Parameters extends org.bouncycastle.asn1.ASN1Encodable implements org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.asn1.pkcs.PBES2Parameters
  super_class: org.bouncycastle.asn1.ASN1Encodable
{
  private org.bouncycastle.asn1.pkcs.KeyDerivationFunc func;
    descriptor: Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.asn1.pkcs.EncryptionScheme scheme;
    descriptor: Lorg/bouncycastle/asn1/pkcs/EncryptionScheme;
    flags: (0x0002) ACC_PRIVATE

  public static org.bouncycastle.asn1.pkcs.PBES2Parameters getInstance(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lorg/bouncycastle/asn1/pkcs/PBES2Parameters;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // java.lang.Object obj
         0: .line 22
            aload 0 /* obj */
            ifnull 1
            aload 0 /* obj */
            instanceof org.bouncycastle.asn1.pkcs.PBES2Parameters
            ifeq 2
         1: .line 24
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            checkcast org.bouncycastle.asn1.pkcs.PBES2Parameters
            areturn
         2: .line 27
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            instanceof org.bouncycastle.asn1.ASN1Sequence
            ifeq 4
         3: .line 29
            new org.bouncycastle.asn1.pkcs.PBES2Parameters
            dup
            aload 0 /* obj */
            checkcast org.bouncycastle.asn1.ASN1Sequence
            invokespecial org.bouncycastle.asn1.pkcs.PBES2Parameters.<init>:(Lorg/bouncycastle/asn1/ASN1Sequence;)V
            areturn
         4: .line 32
      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=6, locals=4, args_size=2
        start local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
        start local 1 // org.bouncycastle.asn1.ASN1Sequence obj
         0: .line 35
            aload 0 /* this */
            invokespecial org.bouncycastle.asn1.ASN1Encodable.<init>:()V
         1: .line 38
            aload 1 /* obj */
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjects:()Ljava/util/Enumeration;
            astore 2 /* e */
        start local 2 // java.util.Enumeration e
         2: .line 39
            aload 2 /* e */
            invokeinterface java.util.Enumeration.nextElement:()Ljava/lang/Object;
            checkcast org.bouncycastle.asn1.DEREncodable
            invokeinterface org.bouncycastle.asn1.DEREncodable.getDERObject:()Lorg/bouncycastle/asn1/DERObject;
            invokestatic org.bouncycastle.asn1.ASN1Sequence.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/ASN1Sequence;
            astore 3 /* funcSeq */
        start local 3 // org.bouncycastle.asn1.ASN1Sequence funcSeq
         3: .line 41
            aload 3 /* funcSeq */
            iconst_0
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjectAt:(I)Lorg/bouncycastle/asn1/DEREncodable;
            getstatic org.bouncycastle.asn1.pkcs.PBES2Parameters.id_PBKDF2:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifeq 6
         4: .line 43
            aload 0 /* this */
            new org.bouncycastle.asn1.pkcs.KeyDerivationFunc
            dup
            getstatic org.bouncycastle.asn1.pkcs.PBES2Parameters.id_PBKDF2:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            aload 3 /* funcSeq */
            iconst_1
            invokevirtual org.bouncycastle.asn1.ASN1Sequence.getObjectAt:(I)Lorg/bouncycastle/asn1/DEREncodable;
            invokestatic org.bouncycastle.asn1.pkcs.PBKDF2Params.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/pkcs/PBKDF2Params;
            invokespecial org.bouncycastle.asn1.pkcs.KeyDerivationFunc.<init>:(Lorg/bouncycastle/asn1/DERObjectIdentifier;Lorg/bouncycastle/asn1/ASN1Encodable;)V
            putfield org.bouncycastle.asn1.pkcs.PBES2Parameters.func:Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
         5: .line 44
            goto 7
         6: .line 47
      StackMap locals: org.bouncycastle.asn1.pkcs.PBES2Parameters org.bouncycastle.asn1.ASN1Sequence java.util.Enumeration org.bouncycastle.asn1.ASN1Sequence
      StackMap stack:
            aload 0 /* this */
            new org.bouncycastle.asn1.pkcs.KeyDerivationFunc
            dup
            aload 3 /* funcSeq */
            invokespecial org.bouncycastle.asn1.pkcs.KeyDerivationFunc.<init>:(Lorg/bouncycastle/asn1/ASN1Sequence;)V
            putfield org.bouncycastle.asn1.pkcs.PBES2Parameters.func:Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
         7: .line 50
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 2 /* e */
            invokeinterface java.util.Enumeration.nextElement:()Ljava/lang/Object;
            invokestatic org.bouncycastle.asn1.pkcs.EncryptionScheme.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            checkcast org.bouncycastle.asn1.pkcs.EncryptionScheme
            putfield org.bouncycastle.asn1.pkcs.PBES2Parameters.scheme:Lorg/bouncycastle/asn1/pkcs/EncryptionScheme;
         8: .line 51
            return
        end local 3 // org.bouncycastle.asn1.ASN1Sequence funcSeq
        end local 2 // java.util.Enumeration e
        end local 1 // org.bouncycastle.asn1.ASN1Sequence obj
        end local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    9     0     this  Lorg/bouncycastle/asn1/pkcs/PBES2Parameters;
            0    9     1      obj  Lorg/bouncycastle/asn1/ASN1Sequence;
            2    9     2        e  Ljava/util/Enumeration;
            3    9     3  funcSeq  Lorg/bouncycastle/asn1/ASN1Sequence;
    MethodParameters:
      Name  Flags
      obj   

  public org.bouncycastle.asn1.pkcs.KeyDerivationFunc getKeyDerivationFunc();
    descriptor: ()Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
         0: .line 55
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.PBES2Parameters.func:Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
            areturn
        end local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/pkcs/PBES2Parameters;

  public org.bouncycastle.asn1.pkcs.EncryptionScheme getEncryptionScheme();
    descriptor: ()Lorg/bouncycastle/asn1/pkcs/EncryptionScheme;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
         0: .line 60
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.PBES2Parameters.scheme:Lorg/bouncycastle/asn1/pkcs/EncryptionScheme;
            areturn
        end local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/pkcs/PBES2Parameters;

  public org.bouncycastle.asn1.DERObject toASN1Object();
    descriptor: ()Lorg/bouncycastle/asn1/DERObject;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.bouncycastle.asn1.pkcs.PBES2Parameters this
         0: .line 65
            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 67
            aload 1 /* v */
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.PBES2Parameters.func:Lorg/bouncycastle/asn1/pkcs/KeyDerivationFunc;
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.add:(Lorg/bouncycastle/asn1/DEREncodable;)V
         2: .line 68
            aload 1 /* v */
            aload 0 /* this */
            getfield org.bouncycastle.asn1.pkcs.PBES2Parameters.scheme:Lorg/bouncycastle/asn1/pkcs/EncryptionScheme;
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.add:(Lorg/bouncycastle/asn1/DEREncodable;)V
         3: .line 70
            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.PBES2Parameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/bouncycastle/asn1/pkcs/PBES2Parameters;
            1    4     1     v  Lorg/bouncycastle/asn1/ASN1EncodableVector;
}
SourceFile: "PBES2Parameters.java"