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 final class org.bouncycastle.math.ec.rfc8032.Ed25519$Algorithm
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.bouncycastle.math.ec.rfc8032.Ed25519$Algorithm
  super_class: java.lang.Object
{
  public static final int Ed25519;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int Ed25519ctx;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int Ed25519ph;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.math.ec.rfc8032.Ed25519$Algorithm this
         0: .line 17
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.math.ec.rfc8032.Ed25519$Algorithm this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/math/ec/rfc8032/Ed25519$Algorithm;
}
SourceFile: "Ed25519.java"
NestHost: org.bouncycastle.math.ec.rfc8032.Ed25519
InnerClasses:
  public final Algorithm = org.bouncycastle.math.ec.rfc8032.Ed25519$Algorithm of org.bouncycastle.math.ec.rfc8032.Ed25519