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.params.DHParameters implements org.bouncycastle.crypto.CipherParameters
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.params.DHParameters
  super_class: java.lang.Object
{
  private static final int DEFAULT_MINIMUM_LENGTH;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 160

  private java.math.BigInteger g;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  private java.math.BigInteger p;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  private java.math.BigInteger q;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  private java.math.BigInteger j;
    descriptor: Ljava/math/BigInteger;
    flags: (0x0002) ACC_PRIVATE

  private int m;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private int l;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

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

  private static int getDefaultMParam(int);
    descriptor: (I)I
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // int lParam
         0: .line 24
            iload 0 /* lParam */
            ifne 2
         1: .line 26
            sipush 160
            ireturn
         2: .line 29
      StackMap locals:
      StackMap stack:
            iload 0 /* lParam */
            sipush 160
            if_icmpge 3
            iload 0 /* lParam */
            goto 4
      StackMap locals:
      StackMap stack:
         3: sipush 160
      StackMap locals:
      StackMap stack: int
         4: ireturn
        end local 0 // int lParam
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0  lParam  I
    MethodParameters:
        Name  Flags
      lParam  

  public void <init>(java.math.BigInteger, java.math.BigInteger);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
         0: .line 36
            aload 0 /* this */
            aload 1 /* p */
            aload 2 /* g */
            aconst_null
            iconst_0
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;I)V
         1: .line 37
            return
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
            0    2     1     p  Ljava/math/BigInteger;
            0    2     2     g  Ljava/math/BigInteger;
    MethodParameters:
      Name  Flags
      p     
      g     

  public void <init>(java.math.BigInteger, java.math.BigInteger, java.math.BigInteger);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=4
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
        start local 3 // java.math.BigInteger q
         0: .line 44
            aload 0 /* this */
            aload 1 /* p */
            aload 2 /* g */
            aload 3 /* q */
            iconst_0
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;I)V
         1: .line 45
            return
        end local 3 // java.math.BigInteger q
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
            0    2     1     p  Ljava/math/BigInteger;
            0    2     2     g  Ljava/math/BigInteger;
            0    2     3     q  Ljava/math/BigInteger;
    MethodParameters:
      Name  Flags
      p     
      g     
      q     

  public void <init>(java.math.BigInteger, java.math.BigInteger, java.math.BigInteger, int);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=5
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
        start local 3 // java.math.BigInteger q
        start local 4 // int l
         0: .line 53
            aload 0 /* this */
            aload 1 /* p */
            aload 2 /* g */
            aload 3 /* q */
            iload 4 /* l */
            invokestatic org.bouncycastle.crypto.params.DHParameters.getDefaultMParam:(I)I
            iload 4 /* l */
            aconst_null
            aconst_null
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;IILjava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHValidationParameters;)V
         1: .line 54
            return
        end local 4 // int l
        end local 3 // java.math.BigInteger q
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
            0    2     1     p  Ljava/math/BigInteger;
            0    2     2     g  Ljava/math/BigInteger;
            0    2     3     q  Ljava/math/BigInteger;
            0    2     4     l  I
    MethodParameters:
      Name  Flags
      p     
      g     
      q     
      l     

  public void <init>(java.math.BigInteger, java.math.BigInteger, java.math.BigInteger, int, int);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;II)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=6, args_size=6
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
        start local 3 // java.math.BigInteger q
        start local 4 // int m
        start local 5 // int l
         0: .line 63
            aload 0 /* this */
            aload 1 /* p */
            aload 2 /* g */
            aload 3 /* q */
            iload 4 /* m */
            iload 5 /* l */
            aconst_null
            aconst_null
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;IILjava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHValidationParameters;)V
         1: .line 64
            return
        end local 5 // int l
        end local 4 // int m
        end local 3 // java.math.BigInteger q
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
            0    2     1     p  Ljava/math/BigInteger;
            0    2     2     g  Ljava/math/BigInteger;
            0    2     3     q  Ljava/math/BigInteger;
            0    2     4     m  I
            0    2     5     l  I
    MethodParameters:
      Name  Flags
      p     
      g     
      q     
      m     
      l     

  public void <init>(java.math.BigInteger, java.math.BigInteger, java.math.BigInteger, java.math.BigInteger, org.bouncycastle.crypto.params.DHValidationParameters);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHValidationParameters;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=6, args_size=6
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
        start local 3 // java.math.BigInteger q
        start local 4 // java.math.BigInteger j
        start local 5 // org.bouncycastle.crypto.params.DHValidationParameters validation
         0: .line 73
            aload 0 /* this */
            aload 1 /* p */
            aload 2 /* g */
            aload 3 /* q */
            sipush 160
            iconst_0
            aload 4 /* j */
            aload 5 /* validation */
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;IILjava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHValidationParameters;)V
         1: .line 74
            return
        end local 5 // org.bouncycastle.crypto.params.DHValidationParameters validation
        end local 4 // java.math.BigInteger j
        end local 3 // java.math.BigInteger q
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    2     0        this  Lorg/bouncycastle/crypto/params/DHParameters;
            0    2     1           p  Ljava/math/BigInteger;
            0    2     2           g  Ljava/math/BigInteger;
            0    2     3           q  Ljava/math/BigInteger;
            0    2     4           j  Ljava/math/BigInteger;
            0    2     5  validation  Lorg/bouncycastle/crypto/params/DHValidationParameters;
    MethodParameters:
            Name  Flags
      p           
      g           
      q           
      j           
      validation  

  public void <init>(java.math.BigInteger, java.math.BigInteger, java.math.BigInteger, int, int, java.math.BigInteger, org.bouncycastle.crypto.params.DHValidationParameters);
    descriptor: (Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;IILjava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHValidationParameters;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=8, args_size=8
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.math.BigInteger p
        start local 2 // java.math.BigInteger g
        start local 3 // java.math.BigInteger q
        start local 4 // int m
        start local 5 // int l
        start local 6 // java.math.BigInteger j
        start local 7 // org.bouncycastle.crypto.params.DHValidationParameters validation
         0: .line 76
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 85
            iload 5 /* l */
            ifeq 6
         2: .line 87
            iload 5 /* l */
            aload 1 /* p */
            invokevirtual java.math.BigInteger.bitLength:()I
            if_icmplt 4
         3: .line 89
            new java.lang.IllegalArgumentException
            dup
            ldc "when l value specified, it must be less than bitlength(p)"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 91
      StackMap locals: org.bouncycastle.crypto.params.DHParameters java.math.BigInteger java.math.BigInteger java.math.BigInteger int int java.math.BigInteger org.bouncycastle.crypto.params.DHValidationParameters
      StackMap stack:
            iload 5 /* l */
            iload 4 /* m */
            if_icmpge 6
         5: .line 93
            new java.lang.IllegalArgumentException
            dup
            ldc "when l value specified, it may not be less than m value"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         6: .line 97
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 2 /* g */
            putfield org.bouncycastle.crypto.params.DHParameters.g:Ljava/math/BigInteger;
         7: .line 98
            aload 0 /* this */
            aload 1 /* p */
            putfield org.bouncycastle.crypto.params.DHParameters.p:Ljava/math/BigInteger;
         8: .line 99
            aload 0 /* this */
            aload 3 /* q */
            putfield org.bouncycastle.crypto.params.DHParameters.q:Ljava/math/BigInteger;
         9: .line 100
            aload 0 /* this */
            iload 4 /* m */
            putfield org.bouncycastle.crypto.params.DHParameters.m:I
        10: .line 101
            aload 0 /* this */
            iload 5 /* l */
            putfield org.bouncycastle.crypto.params.DHParameters.l:I
        11: .line 102
            aload 0 /* this */
            aload 6 /* j */
            putfield org.bouncycastle.crypto.params.DHParameters.j:Ljava/math/BigInteger;
        12: .line 103
            aload 0 /* this */
            aload 7 /* validation */
            putfield org.bouncycastle.crypto.params.DHParameters.validation:Lorg/bouncycastle/crypto/params/DHValidationParameters;
        13: .line 104
            return
        end local 7 // org.bouncycastle.crypto.params.DHValidationParameters validation
        end local 6 // java.math.BigInteger j
        end local 5 // int l
        end local 4 // int m
        end local 3 // java.math.BigInteger q
        end local 2 // java.math.BigInteger g
        end local 1 // java.math.BigInteger p
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   14     0        this  Lorg/bouncycastle/crypto/params/DHParameters;
            0   14     1           p  Ljava/math/BigInteger;
            0   14     2           g  Ljava/math/BigInteger;
            0   14     3           q  Ljava/math/BigInteger;
            0   14     4           m  I
            0   14     5           l  I
            0   14     6           j  Ljava/math/BigInteger;
            0   14     7  validation  Lorg/bouncycastle/crypto/params/DHValidationParameters;
    MethodParameters:
            Name  Flags
      p           
      g           
      q           
      m           
      l           
      j           
      validation  

  public java.math.BigInteger getP();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 108
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.p:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public java.math.BigInteger getG();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 113
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.g:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public java.math.BigInteger getQ();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 118
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.q:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public java.math.BigInteger getJ();
    descriptor: ()Ljava/math/BigInteger;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 128
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.j:Ljava/math/BigInteger;
            areturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public int getM();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 138
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.m:I
            ireturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public int getL();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 148
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.l:I
            ireturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public org.bouncycastle.crypto.params.DHValidationParameters getValidationParameters();
    descriptor: ()Lorg/bouncycastle/crypto/params/DHValidationParameters;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 153
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.validation:Lorg/bouncycastle/crypto/params/DHValidationParameters;
            areturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/params/DHParameters;

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
        start local 1 // java.lang.Object obj
         0: .line 159
            aload 1 /* obj */
            instanceof org.bouncycastle.crypto.params.DHParameters
            ifne 2
         1: .line 161
            iconst_0
            ireturn
         2: .line 164
      StackMap locals:
      StackMap stack:
            aload 1 /* obj */
            checkcast org.bouncycastle.crypto.params.DHParameters
            astore 2 /* pm */
        start local 2 // org.bouncycastle.crypto.params.DHParameters pm
         3: .line 166
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            ifnull 6
         4: .line 168
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            aload 2 /* pm */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifne 8
         5: .line 170
            iconst_0
            ireturn
         6: .line 175
      StackMap locals: org.bouncycastle.crypto.params.DHParameters
      StackMap stack:
            aload 2 /* pm */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            ifnull 8
         7: .line 177
            iconst_0
            ireturn
         8: .line 181
      StackMap locals:
      StackMap stack:
            aload 2 /* pm */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getP:()Ljava/math/BigInteger;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.p:Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifeq 9
            aload 2 /* pm */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getG:()Ljava/math/BigInteger;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.params.DHParameters.g:Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.equals:(Ljava/lang/Object;)Z
            ifeq 9
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         9: iconst_0
            ireturn
        end local 2 // org.bouncycastle.crypto.params.DHParameters pm
        end local 1 // java.lang.Object obj
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   10     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
            0   10     1   obj  Ljava/lang/Object;
            3   10     2    pm  Lorg/bouncycastle/crypto/params/DHParameters;
    MethodParameters:
      Name  Flags
      obj   

  public int hashCode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.params.DHParameters this
         0: .line 186
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getP:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.hashCode:()I
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getG:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.hashCode:()I
            ixor
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            ifnull 1
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.params.DHParameters.getQ:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.hashCode:()I
            goto 2
      StackMap locals:
      StackMap stack: int
         1: iconst_0
      StackMap locals: org.bouncycastle.crypto.params.DHParameters
      StackMap stack: int int
         2: ixor
            ireturn
        end local 0 // org.bouncycastle.crypto.params.DHParameters this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/bouncycastle/crypto/params/DHParameters;
}
SourceFile: "DHParameters.java"