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 final class org.bouncycastle.jce.provider.symmetric.RC5
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.bouncycastle.jce.provider.symmetric.RC5
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.symmetric.RC5 this
         0: .line 26
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 28
            return
        end local 0 // org.bouncycastle.jce.provider.symmetric.RC5 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/jce/provider/symmetric/RC5;
}
SourceFile: "RC5.java"
NestMembers:
  org.bouncycastle.jce.provider.symmetric.RC5$AlgParamGen  org.bouncycastle.jce.provider.symmetric.RC5$AlgParams  org.bouncycastle.jce.provider.symmetric.RC5$CBC32  org.bouncycastle.jce.provider.symmetric.RC5$CFB8Mac32  org.bouncycastle.jce.provider.symmetric.RC5$ECB32  org.bouncycastle.jce.provider.symmetric.RC5$ECB64  org.bouncycastle.jce.provider.symmetric.RC5$KeyGen32  org.bouncycastle.jce.provider.symmetric.RC5$KeyGen64  org.bouncycastle.jce.provider.symmetric.RC5$Mac32  org.bouncycastle.jce.provider.symmetric.RC5$Mappings
InnerClasses:
  public AlgParamGen = org.bouncycastle.jce.provider.symmetric.RC5$AlgParamGen of org.bouncycastle.jce.provider.symmetric.RC5
  public AlgParams = org.bouncycastle.jce.provider.symmetric.RC5$AlgParams of org.bouncycastle.jce.provider.symmetric.RC5
  public CBC32 = org.bouncycastle.jce.provider.symmetric.RC5$CBC32 of org.bouncycastle.jce.provider.symmetric.RC5
  public CFB8Mac32 = org.bouncycastle.jce.provider.symmetric.RC5$CFB8Mac32 of org.bouncycastle.jce.provider.symmetric.RC5
  public ECB32 = org.bouncycastle.jce.provider.symmetric.RC5$ECB32 of org.bouncycastle.jce.provider.symmetric.RC5
  public ECB64 = org.bouncycastle.jce.provider.symmetric.RC5$ECB64 of org.bouncycastle.jce.provider.symmetric.RC5
  public KeyGen32 = org.bouncycastle.jce.provider.symmetric.RC5$KeyGen32 of org.bouncycastle.jce.provider.symmetric.RC5
  public KeyGen64 = org.bouncycastle.jce.provider.symmetric.RC5$KeyGen64 of org.bouncycastle.jce.provider.symmetric.RC5
  public Mac32 = org.bouncycastle.jce.provider.symmetric.RC5$Mac32 of org.bouncycastle.jce.provider.symmetric.RC5
  public Mappings = org.bouncycastle.jce.provider.symmetric.RC5$Mappings of org.bouncycastle.jce.provider.symmetric.RC5