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.
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class org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter extends org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter
  super_class: org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter this
         0: .line 215
            aload 0 /* this */
            invokespecial org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter.<init>:()V
            return
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$DHAgreementConverter;

  org.bouncycastle.crypto.params.AsymmetricKeyParameter getPublicKeyParameters(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo, java.lang.Object);
    descriptor: (Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;Ljava/lang/Object;)Lorg/bouncycastle/crypto/params/AsymmetricKeyParameter;
    flags: (0x0000) 
    Code:
      stack=6, locals=8, args_size=3
        start local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter this
        start local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        start local 2 // java.lang.Object defaultParams
         0: .line 221
            aload 1 /* keyInfo */
            invokevirtual org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getAlgorithm:()Lorg/bouncycastle/asn1/x509/AlgorithmIdentifier;
            invokevirtual org.bouncycastle.asn1.x509.AlgorithmIdentifier.getParameters:()Lorg/bouncycastle/asn1/ASN1Encodable;
            invokestatic org.bouncycastle.asn1.pkcs.DHParameter.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/pkcs/DHParameter;
            astore 3 /* params */
        start local 3 // org.bouncycastle.asn1.pkcs.DHParameter params
         1: .line 222
            aload 1 /* keyInfo */
            invokevirtual org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.parsePublicKey:()Lorg/bouncycastle/asn1/ASN1Primitive;
            checkcast org.bouncycastle.asn1.ASN1Integer
            astore 4 /* derY */
        start local 4 // org.bouncycastle.asn1.ASN1Integer derY
         2: .line 224
            aload 3 /* params */
            invokevirtual org.bouncycastle.asn1.pkcs.DHParameter.getL:()Ljava/math/BigInteger;
            astore 5 /* lVal */
        start local 5 // java.math.BigInteger lVal
         3: .line 225
            aload 5 /* lVal */
            ifnonnull 4
            iconst_0
            goto 5
      StackMap locals: org.bouncycastle.asn1.pkcs.DHParameter org.bouncycastle.asn1.ASN1Integer java.math.BigInteger
      StackMap stack:
         4: aload 5 /* lVal */
            invokevirtual java.math.BigInteger.intValue:()I
      StackMap locals:
      StackMap stack: int
         5: istore 6 /* l */
        start local 6 // int l
         6: .line 226
            new org.bouncycastle.crypto.params.DHParameters
            dup
            aload 3 /* params */
            invokevirtual org.bouncycastle.asn1.pkcs.DHParameter.getP:()Ljava/math/BigInteger;
            aload 3 /* params */
            invokevirtual org.bouncycastle.asn1.pkcs.DHParameter.getG:()Ljava/math/BigInteger;
            aconst_null
            iload 6 /* l */
            invokespecial org.bouncycastle.crypto.params.DHParameters.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;I)V
            astore 7 /* dhParams */
        start local 7 // org.bouncycastle.crypto.params.DHParameters dhParams
         7: .line 228
            new org.bouncycastle.crypto.params.DHPublicKeyParameters
            dup
            aload 4 /* derY */
            invokevirtual org.bouncycastle.asn1.ASN1Integer.getValue:()Ljava/math/BigInteger;
            aload 7 /* dhParams */
            invokespecial org.bouncycastle.crypto.params.DHPublicKeyParameters.<init>:(Ljava/math/BigInteger;Lorg/bouncycastle/crypto/params/DHParameters;)V
            areturn
        end local 7 // org.bouncycastle.crypto.params.DHParameters dhParams
        end local 6 // int l
        end local 5 // java.math.BigInteger lVal
        end local 4 // org.bouncycastle.asn1.ASN1Integer derY
        end local 3 // org.bouncycastle.asn1.pkcs.DHParameter params
        end local 2 // java.lang.Object defaultParams
        end local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    8     0           this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$DHAgreementConverter;
            0    8     1        keyInfo  Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;
            0    8     2  defaultParams  Ljava/lang/Object;
            1    8     3         params  Lorg/bouncycastle/asn1/pkcs/DHParameter;
            2    8     4           derY  Lorg/bouncycastle/asn1/ASN1Integer;
            3    8     5           lVal  Ljava/math/BigInteger;
            6    8     6              l  I
            7    8     7       dhParams  Lorg/bouncycastle/crypto/params/DHParameters;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
               Name  Flags
      keyInfo        
      defaultParams  
}
SourceFile: "PublicKeyFactory.java"
NestHost: org.bouncycastle.crypto.util.PublicKeyFactory
InnerClasses:
  private DHAgreementConverter = org.bouncycastle.crypto.util.PublicKeyFactory$DHAgreementConverter of org.bouncycastle.crypto.util.PublicKeyFactory
  private abstract SubjectPublicKeyInfoConverter = org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter of org.bouncycastle.crypto.util.PublicKeyFactory