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.jcajce.spec.PBKDF2KeySpec extends javax.crypto.spec.PBEKeySpec
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jcajce.spec.PBKDF2KeySpec
  super_class: javax.crypto.spec.PBEKeySpec
{
  private static final org.bouncycastle.asn1.x509.AlgorithmIdentifier defaultPRF;
    descriptor: Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private org.bouncycastle.asn1.x509.AlgorithmIdentifier prf;
    descriptor: Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
    flags: (0x0002) ACC_PRIVATE

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 15
            new org.bouncycastle.asn1.x509.AlgorithmIdentifier
            dup
            getstatic org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers.id_hmacWithSHA1:Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;
            getstatic org.bouncycastle.asn1.DERNull.INSTANCE:Lorg/bouncycastle/asn1/DERNull;
            invokespecial org.bouncycastle.asn1.x509.AlgorithmIdentifier.<init>:(Lorg/bouncycastle/asn1/ASN1ObjectIdentifier;Lorg/bouncycastle/asn1/ASN1Encodable;)V
            putstatic org.bouncycastle.jcajce.spec.PBKDF2KeySpec.defaultPRF:Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(char[], byte[], int, int, org.bouncycastle.asn1.x509.AlgorithmIdentifier);
    descriptor: ([C[BIILorg/bouncycastle/asn1/x509/AlgorithmIdentifier;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=6, args_size=6
        start local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
        start local 1 // char[] password
        start local 2 // byte[] salt
        start local 3 // int iterationCount
        start local 4 // int keySize
        start local 5 // org.bouncycastle.asn1.x509.AlgorithmIdentifier prf
         0: .line 30
            aload 0 /* this */
            aload 1 /* password */
            aload 2 /* salt */
            iload 3 /* iterationCount */
            iload 4 /* keySize */
            invokespecial javax.crypto.spec.PBEKeySpec.<init>:([C[BII)V
         1: .line 32
            aload 0 /* this */
            aload 5 /* prf */
            putfield org.bouncycastle.jcajce.spec.PBKDF2KeySpec.prf:Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
         2: .line 33
            return
        end local 5 // org.bouncycastle.asn1.x509.AlgorithmIdentifier prf
        end local 4 // int keySize
        end local 3 // int iterationCount
        end local 2 // byte[] salt
        end local 1 // char[] password
        end local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0    3     0            this  Lorg/bouncycastle/jcajce/spec/PBKDF2KeySpec;
            0    3     1        password  [C
            0    3     2            salt  [B
            0    3     3  iterationCount  I
            0    3     4         keySize  I
            0    3     5             prf  Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
    MethodParameters:
                Name  Flags
      password        
      salt            
      iterationCount  
      keySize         
      prf             

  public boolean isDefaultPrf();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
         0: .line 42
            getstatic org.bouncycastle.jcajce.spec.PBKDF2KeySpec.defaultPRF:Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            aload 0 /* this */
            getfield org.bouncycastle.jcajce.spec.PBKDF2KeySpec.prf:Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            invokevirtual org.bouncycastle.asn1.x509.AlgorithmIdentifier.equals:(Ljava/lang/Object;)Z
            ireturn
        end local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jcajce/spec/PBKDF2KeySpec;

  public org.bouncycastle.asn1.x509.AlgorithmIdentifier getPrf();
    descriptor: ()Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
         0: .line 52
            aload 0 /* this */
            getfield org.bouncycastle.jcajce.spec.PBKDF2KeySpec.prf:Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            areturn
        end local 0 // org.bouncycastle.jcajce.spec.PBKDF2KeySpec this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jcajce/spec/PBKDF2KeySpec;
}
SourceFile: "PBKDF2KeySpec.java"