http://www.jcraft.com/jsch/: JSch is a pure Java implementation of SSH2 (JCraft,Inc.) 
class com.jcraft.jsch.KnownHosts$HashedHostKey extends com.jcraft.jsch.HostKey
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.jcraft.jsch.KnownHosts$HashedHostKey
  super_class: com.jcraft.jsch.HostKey
{
  private static final java.lang.String HASH_MAGIC;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "|1|"

  private static final java.lang.String HASH_DELIM;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "|"

  private boolean hashed;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  byte[] salt;
    descriptor: [B
    flags: (0x0000) 

  byte[] hash;
    descriptor: [B
    flags: (0x0000) 

  final com.jcraft.jsch.KnownHosts this$0;
    descriptor: Lcom/jcraft/jsch/KnownHosts;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.jcraft.jsch.KnownHosts, java.lang.String, byte[]);
    descriptor: (Lcom/jcraft/jsch/KnownHosts;Ljava/lang/String;[B)V
    flags: (0x0000) 
    Code:
      stack=5, locals=4, args_size=4
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
        start local 2 // java.lang.String host
        start local 3 // byte[] key
         0: .line 513
            aload 0 /* this */
            aload 1
            aload 2 /* host */
            iconst_0
            aload 3 /* key */
            invokespecial com.jcraft.jsch.KnownHosts$HashedHostKey.<init>:(Lcom/jcraft/jsch/KnownHosts;Ljava/lang/String;I[B)V
         1: .line 514
            return
        end local 3 // byte[] key
        end local 2 // java.lang.String host
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;
            0    2     2  host  Ljava/lang/String;
            0    2     3   key  [B
    Exceptions:
      throws com.jcraft.jsch.JSchException
    MethodParameters:
        Name  Flags
      this$0  final
      host    
      key     

  void <init>(com.jcraft.jsch.KnownHosts, java.lang.String, int, byte[]);
    descriptor: (Lcom/jcraft/jsch/KnownHosts;Ljava/lang/String;I[B)V
    flags: (0x0000) 
    Code:
      stack=7, locals=5, args_size=5
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
        start local 2 // java.lang.String host
        start local 3 // int type
        start local 4 // byte[] key
         0: .line 516
            aload 0 /* this */
            aload 1
            ldc ""
            aload 2 /* host */
            iload 3 /* type */
            aload 4 /* key */
            aconst_null
            invokespecial com.jcraft.jsch.KnownHosts$HashedHostKey.<init>:(Lcom/jcraft/jsch/KnownHosts;Ljava/lang/String;Ljava/lang/String;I[BLjava/lang/String;)V
         1: .line 517
            return
        end local 4 // byte[] key
        end local 3 // int type
        end local 2 // java.lang.String host
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;
            0    2     2  host  Ljava/lang/String;
            0    2     3  type  I
            0    2     4   key  [B
    Exceptions:
      throws com.jcraft.jsch.JSchException
    MethodParameters:
        Name  Flags
      this$0  final
      host    
      type    
      key     

  void <init>(com.jcraft.jsch.KnownHosts, java.lang.String, java.lang.String, int, byte[], java.lang.String);
    descriptor: (Lcom/jcraft/jsch/KnownHosts;Ljava/lang/String;Ljava/lang/String;I[BLjava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=6, locals=10, args_size=7
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
        start local 2 // java.lang.String marker
        start local 3 // java.lang.String host
        start local 4 // int type
        start local 5 // byte[] key
        start local 6 // java.lang.String comment
         0: .line 518
            aload 0 /* this */
            aload 1
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.this$0:Lcom/jcraft/jsch/KnownHosts;
         1: .line 519
            aload 0 /* this */
            aload 2 /* marker */
            aload 3 /* host */
            iload 4 /* type */
            aload 5 /* key */
            aload 6 /* comment */
            invokespecial com.jcraft.jsch.HostKey.<init>:(Ljava/lang/String;Ljava/lang/String;I[BLjava/lang/String;)V
         2: .line 508
            aload 0 /* this */
            iconst_0
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
         3: .line 509
            aload 0 /* this */
            aconst_null
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
         4: .line 510
            aload 0 /* this */
            aconst_null
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
         5: .line 520
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.host:Ljava/lang/String;
            ldc "|1|"
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 18
         6: .line 521
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.host:Ljava/lang/String;
            ldc "|1|"
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            ldc "|"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            ifle 18
         7: .line 522
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.host:Ljava/lang/String;
            ldc "|1|"
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 7 /* data */
        start local 7 // java.lang.String data
         8: .line 523
            aload 7 /* data */
            iconst_0
            aload 7 /* data */
            ldc "|"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            astore 8 /* _salt */
        start local 8 // java.lang.String _salt
         9: .line 524
            aload 7 /* data */
            aload 7 /* data */
            ldc "|"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            iconst_1
            iadd
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 9 /* _hash */
        start local 9 // java.lang.String _hash
        10: .line 525
            aload 0 /* this */
            aload 8 /* _salt */
            invokestatic com.jcraft.jsch.Util.str2byte:(Ljava/lang/String;)[B
            iconst_0
            aload 8 /* _salt */
            invokevirtual java.lang.String.length:()I
            invokestatic com.jcraft.jsch.Util.fromBase64:([BII)[B
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
        11: .line 526
            aload 0 /* this */
            aload 9 /* _hash */
            invokestatic com.jcraft.jsch.Util.str2byte:(Ljava/lang/String;)[B
            iconst_0
            aload 9 /* _hash */
            invokevirtual java.lang.String.length:()I
            invokestatic com.jcraft.jsch.Util.fromBase64:([BII)[B
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
        12: .line 527
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            arraylength
            bipush 20
            if_icmpne 14
        13: .line 528
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
            arraylength
            bipush 20
            if_icmpeq 17
        14: .line 529
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey com.jcraft.jsch.KnownHosts java.lang.String java.lang.String int byte[] java.lang.String java.lang.String java.lang.String java.lang.String
      StackMap stack:
            aload 0 /* this */
            aconst_null
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
        15: .line 530
            aload 0 /* this */
            aconst_null
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
        16: .line 531
            return
        17: .line 533
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
        end local 9 // java.lang.String _hash
        end local 8 // java.lang.String _salt
        end local 7 // java.lang.String data
        18: .line 535
      StackMap locals:
      StackMap stack:
            return
        end local 6 // java.lang.String comment
        end local 5 // byte[] key
        end local 4 // int type
        end local 3 // java.lang.String host
        end local 2 // java.lang.String marker
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   19     0     this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;
            0   19     2   marker  Ljava/lang/String;
            0   19     3     host  Ljava/lang/String;
            0   19     4     type  I
            0   19     5      key  [B
            0   19     6  comment  Ljava/lang/String;
            8   18     7     data  Ljava/lang/String;
            9   18     8    _salt  Ljava/lang/String;
           10   18     9    _hash  Ljava/lang/String;
    Exceptions:
      throws com.jcraft.jsch.JSchException
    MethodParameters:
         Name  Flags
      this$0   final
      marker   
      host     
      type     
      key      
      comment  

  boolean isMatched(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0000) 
    Code:
      stack=4, locals=6, args_size=2
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
        start local 1 // java.lang.String _host
         0: .line 538
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
            ifne 2
         1: .line 539
            aload 0 /* this */
            aload 1 /* _host */
            invokespecial com.jcraft.jsch.HostKey.isMatched:(Ljava/lang/String;)Z
            ireturn
         2: .line 541
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.this$0:Lcom/jcraft/jsch/KnownHosts;
            invokevirtual com.jcraft.jsch.KnownHosts.getHMACSHA1:()Lcom/jcraft/jsch/MAC;
            astore 2 /* macsha1 */
        start local 2 // com.jcraft.jsch.MAC macsha1
         3: .line 543
            aload 2 /* macsha1 */
            dup
            astore 3
            monitorenter
         4: .line 544
            aload 2 /* macsha1 */
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            invokeinterface com.jcraft.jsch.MAC.init:([B)V
         5: .line 545
            aload 1 /* _host */
            invokestatic com.jcraft.jsch.Util.str2byte:(Ljava/lang/String;)[B
            astore 4 /* foo */
        start local 4 // byte[] foo
         6: .line 546
            aload 2 /* macsha1 */
            aload 4 /* foo */
            iconst_0
            aload 4 /* foo */
            arraylength
            invokeinterface com.jcraft.jsch.MAC.update:([BII)V
         7: .line 547
            aload 2 /* macsha1 */
            invokeinterface com.jcraft.jsch.MAC.getBlockSize:()I
            newarray 8
            astore 5 /* bar */
        start local 5 // byte[] bar
         8: .line 548
            aload 2 /* macsha1 */
            aload 5 /* bar */
            iconst_0
            invokeinterface com.jcraft.jsch.MAC.doFinal:([BI)V
         9: .line 549
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
            aload 5 /* bar */
            invokestatic com.jcraft.jsch.Util.array_equals:([B[B)Z
            aload 3
            monitorexit
        10: ireturn
        end local 5 // byte[] bar
        end local 4 // byte[] foo
        11: .line 543
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey java.lang.String com.jcraft.jsch.MAC com.jcraft.jsch.MAC
      StackMap stack: java.lang.Throwable
            aload 3
            monitorexit
        12: athrow
        13: .line 552
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey java.lang.String com.jcraft.jsch.MAC
      StackMap stack: java.lang.Exception
            astore 3 /* e */
        start local 3 // java.lang.Exception e
        14: .line 553
            getstatic java.lang.System.out:Ljava/io/PrintStream;
            aload 3 /* e */
            invokevirtual java.io.PrintStream.println:(Ljava/lang/Object;)V
        end local 3 // java.lang.Exception e
        15: .line 555
            iconst_0
            ireturn
        end local 2 // com.jcraft.jsch.MAC macsha1
        end local 1 // java.lang.String _host
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   16     0     this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;
            0   16     1    _host  Ljava/lang/String;
            3   16     2  macsha1  Lcom/jcraft/jsch/MAC;
            6   11     4      foo  [B
            8   11     5      bar  [B
           14   15     3        e  Ljava/lang/Exception;
      Exception table:
        from    to  target  type
           4    10      11  any
          11    12      11  any
           3    10      13  Class java.lang.Exception
          11    13      13  Class java.lang.Exception
    MethodParameters:
       Name  Flags
      _host  

  boolean isHashed();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
         0: .line 559
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
            ireturn
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;

  void hash();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=5, locals=4, args_size=1
        start local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
         0: .line 563
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
            ifeq 2
         1: .line 564
            return
         2: .line 565
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.this$0:Lcom/jcraft/jsch/KnownHosts;
            invokevirtual com.jcraft.jsch.KnownHosts.getHMACSHA1:()Lcom/jcraft/jsch/MAC;
            astore 1 /* macsha1 */
        start local 1 // com.jcraft.jsch.MAC macsha1
         3: .line 566
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            ifnonnull 12
         4: .line 567
            getstatic com.jcraft.jsch.Session.random:Lcom/jcraft/jsch/Random;
            astore 2 /* random */
        start local 2 // com.jcraft.jsch.Random random
         5: .line 568
            aload 2 /* random */
            dup
            astore 3
            monitorenter
         6: .line 569
            aload 0 /* this */
            aload 1 /* macsha1 */
            invokeinterface com.jcraft.jsch.MAC.getBlockSize:()I
            newarray 8
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
         7: .line 570
            aload 2 /* random */
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            iconst_0
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            arraylength
            invokeinterface com.jcraft.jsch.Random.fill:([BII)V
         8: .line 568
            aload 3
            monitorexit
         9: goto 12
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey com.jcraft.jsch.MAC com.jcraft.jsch.Random com.jcraft.jsch.Random
      StackMap stack: java.lang.Throwable
        10: aload 3
            monitorexit
        11: athrow
        end local 2 // com.jcraft.jsch.Random random
        12: .line 574
      StackMap locals:
      StackMap stack:
            aload 1 /* macsha1 */
            dup
            astore 2
            monitorenter
        13: .line 575
            aload 1 /* macsha1 */
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            invokeinterface com.jcraft.jsch.MAC.init:([B)V
        14: .line 576
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.host:Ljava/lang/String;
            invokestatic com.jcraft.jsch.Util.str2byte:(Ljava/lang/String;)[B
            astore 3 /* foo */
        start local 3 // byte[] foo
        15: .line 577
            aload 1 /* macsha1 */
            aload 3 /* foo */
            iconst_0
            aload 3 /* foo */
            arraylength
            invokeinterface com.jcraft.jsch.MAC.update:([BII)V
        16: .line 578
            aload 0 /* this */
            aload 1 /* macsha1 */
            invokeinterface com.jcraft.jsch.MAC.getBlockSize:()I
            newarray 8
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
        17: .line 579
            aload 1 /* macsha1 */
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
            iconst_0
            invokeinterface com.jcraft.jsch.MAC.doFinal:([BI)V
        end local 3 // byte[] foo
        18: .line 574
            aload 2
            monitorexit
        19: goto 23
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey com.jcraft.jsch.MAC com.jcraft.jsch.MAC
      StackMap stack: java.lang.Throwable
        20: aload 2
            monitorexit
        21: athrow
        22: .line 582
      StackMap locals: com.jcraft.jsch.KnownHosts$HashedHostKey com.jcraft.jsch.MAC
      StackMap stack: java.lang.Exception
            pop
        23: .line 584
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            new java.lang.StringBuilder
            dup
            ldc "|1|"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            iconst_0
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.salt:[B
            arraylength
            invokestatic com.jcraft.jsch.Util.toBase64:([BII)[B
            invokestatic com.jcraft.jsch.Util.byte2str:([B)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        24: .line 585
            ldc "|"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
            iconst_0
            aload 0 /* this */
            getfield com.jcraft.jsch.KnownHosts$HashedHostKey.hash:[B
            arraylength
            invokestatic com.jcraft.jsch.Util.toBase64:([BII)[B
            invokestatic com.jcraft.jsch.Util.byte2str:([B)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        25: .line 584
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.host:Ljava/lang/String;
        26: .line 586
            aload 0 /* this */
            iconst_1
            putfield com.jcraft.jsch.KnownHosts$HashedHostKey.hashed:Z
        27: .line 587
            return
        end local 1 // com.jcraft.jsch.MAC macsha1
        end local 0 // com.jcraft.jsch.KnownHosts$HashedHostKey this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   28     0     this  Lcom/jcraft/jsch/KnownHosts$HashedHostKey;
            3   28     1  macsha1  Lcom/jcraft/jsch/MAC;
            5   12     2   random  Lcom/jcraft/jsch/Random;
           15   18     3      foo  [B
      Exception table:
        from    to  target  type
           6     9      10  any
          10    11      10  any
          13    19      20  any
          20    21      20  any
          12    22      22  Class java.lang.Exception
}
SourceFile: "KnownHosts.java"
NestHost: com.jcraft.jsch.KnownHosts
InnerClasses:
  HashedHostKey = com.jcraft.jsch.KnownHosts$HashedHostKey of com.jcraft.jsch.KnownHosts