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$X448Converter extends org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.crypto.util.PublicKeyFactory$X448Converter
  super_class: org.bouncycastle.crypto.util.PublicKeyFactory$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$X448Converter this
         0: .line 497
            aload 0 /* this */
            invokespecial org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter.<init>:()V
            return
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$X448Converter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$X448Converter;

  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=3, args_size=3
        start local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$X448Converter this
        start local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        start local 2 // java.lang.Object defaultParams
         0: .line 502
            new org.bouncycastle.crypto.params.X448PublicKeyParameters
            dup
            aload 1 /* keyInfo */
            aload 2 /* defaultParams */
            bipush 56
            invokestatic org.bouncycastle.crypto.util.PublicKeyFactory.getRawKey:(Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;Ljava/lang/Object;I)[B
            iconst_0
            invokespecial org.bouncycastle.crypto.params.X448PublicKeyParameters.<init>:([BI)V
            areturn
        end local 2 // java.lang.Object defaultParams
        end local 1 // org.bouncycastle.asn1.x509.SubjectPublicKeyInfo keyInfo
        end local 0 // org.bouncycastle.crypto.util.PublicKeyFactory$X448Converter this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    1     0           this  Lorg/bouncycastle/crypto/util/PublicKeyFactory$X448Converter;
            0    1     1        keyInfo  Lorg/bouncycastle/asn1/x509/SubjectPublicKeyInfo;
            0    1     2  defaultParams  Ljava/lang/Object;
    MethodParameters:
               Name  Flags
      keyInfo        
      defaultParams  
}
SourceFile: "PublicKeyFactory.java"
NestHost: org.bouncycastle.crypto.util.PublicKeyFactory
InnerClasses:
  private abstract SubjectPublicKeyInfoConverter = org.bouncycastle.crypto.util.PublicKeyFactory$SubjectPublicKeyInfoConverter of org.bouncycastle.crypto.util.PublicKeyFactory
  private X448Converter = org.bouncycastle.crypto.util.PublicKeyFactory$X448Converter of org.bouncycastle.crypto.util.PublicKeyFactory