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$RSAConverter extends org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.crypto.util.PublicKeyFactory$RSAConverter
  super_class: org.bouncycastle.crypto.util.PublicKeyFactory$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$RSAConverter this
         0: .line 165
            aload 0 /* this */
            invokespecial org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter.<init>:()V
            return
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$RSAConverter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$RSAConverter;

  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=5, locals=4, args_size=3
        start local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$RSAConverter this
        start local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        start local 2 // java.lang.Object defaultParams
         0: .line 171
            aload 1 /* keyInfo */
            invokevirtual org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.parsePublicKey:()Lorg/bouncycastle/asn1/ASN1Primitive;
            invokestatic org.bouncycastle.asn1.pkcs.RSAPublicKey.getInstance:(Ljava/lang/Object;)Lorg/bouncycastle/asn1/pkcs/RSAPublicKey;
            astore 3 /* pubKey */
        start local 3 // org.bouncycastle.asn1.pkcs.RSAPublicKey pubKey
         1: .line 173
            new org.bouncycastle.crypto.params.RSAKeyParameters
            dup
            iconst_0
            aload 3 /* pubKey */
            invokevirtual org.bouncycastle.asn1.pkcs.RSAPublicKey.getModulus:()Ljava/math/BigInteger;
            aload 3 /* pubKey */
            invokevirtual org.bouncycastle.asn1.pkcs.RSAPublicKey.getPublicExponent:()Ljava/math/BigInteger;
            invokespecial org.bouncycastle.crypto.params.RSAKeyParameters.<init>:(ZLjava/math/BigInteger;Ljava/math/BigInteger;)V
            areturn
        end local 3 // org.bouncycastle.asn1.pkcs.RSAPublicKey pubKey
        end local 2 // java.lang.Object defaultParams
        end local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$RSAConverter this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$RSAConverter;
            0    2     1        keyInfo  Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;
            0    2     2  defaultParams  Ljava/lang/Object;
            1    2     3         pubKey  Lorg/bouncycastle/asn1/pkcs/RSAPublicKey;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
               Name  Flags
      keyInfo        
      defaultParams  
}
SourceFile: "PublicKeyFactory.java"
NestHost: org.bouncycastle.crypto.util.PublicKeyFactory
InnerClasses:
  private RSAConverter = org.bouncycastle.crypto.util.PublicKeyFactory$RSAConverter of org.bouncycastle.crypto.util.PublicKeyFactory
  private abstract SubjectPublicKeyInfoConverter = org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter of org.bouncycastle.crypto.util.PublicKeyFactory