abstract class com.sun.crypto.provider.HmacCore extends javax.crypto.MacSpi implements java.lang.Cloneable
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: com.sun.crypto.provider.HmacCore
  super_class: javax.crypto.MacSpi
{
  private java.security.MessageDigest md;
    descriptor: Ljava/security/MessageDigest;
    flags: (0x0002) ACC_PRIVATE

  private byte[] k_ipad;
    descriptor: [B
    flags: (0x0002) ACC_PRIVATE

  private byte[] k_opad;
    descriptor: [B
    flags: (0x0002) ACC_PRIVATE

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

  private final int blockLen;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)V
    flags: (0x0000) 
    Code:
      stack=2, locals=12, args_size=3
        start local 0 // com.sun.crypto.provider.HmacCore this
        start local 1 // java.lang.String digestAlgo
        start local 2 // int bl
         0: .line 59
            aload 0 /* this */
            invokespecial javax.crypto.MacSpi.<init>:()V
         1: .line 60
            aload 1 /* digestAlgo */
            invokestatic java.security.MessageDigest.getInstance:(Ljava/lang/String;)Ljava/security/MessageDigest;
            astore 3 /* md */
        start local 3 // java.security.MessageDigest md
         2: .line 61
            aload 3 /* md */
            instanceof java.lang.Cloneable
            ifne 20
         3: .line 64
            ldc "SUN"
            invokestatic java.security.Security.getProvider:(Ljava/lang/String;)Ljava/security/Provider;
            astore 4 /* sun */
        start local 4 // java.security.Provider sun
         4: .line 65
            aload 4 /* sun */
            ifnull 7
         5: .line 66
            aload 1 /* digestAlgo */
            aload 4 /* sun */
            invokestatic java.security.MessageDigest.getInstance:(Ljava/lang/String;Ljava/security/Provider;)Ljava/security/MessageDigest;
            astore 3 /* md */
         6: .line 67
            goto 20
         7: .line 68
      StackMap locals: com.sun.crypto.provider.HmacCore java.lang.String int java.security.MessageDigest java.security.Provider
      StackMap stack:
            aload 3 /* md */
            invokevirtual java.security.MessageDigest.getProvider:()Ljava/security/Provider;
            invokevirtual java.security.Provider.getName:()Ljava/lang/String;
            astore 5 /* noCloneProv */
        start local 5 // java.lang.String noCloneProv
         8: .line 70
            invokestatic java.security.Security.getProviders:()[Ljava/security/Provider;
            astore 6 /* provs */
        start local 6 // java.security.Provider[] provs
         9: .line 71
            aload 6 /* provs */
            dup
            astore 10
            arraylength
            istore 9
            iconst_0
            istore 8
            goto 19
      StackMap locals: com.sun.crypto.provider.HmacCore java.lang.String int java.security.MessageDigest java.security.Provider java.lang.String java.security.Provider[] top int int java.security.Provider[]
      StackMap stack:
        10: aload 10
            iload 8
            aaload
            astore 7 /* p */
        start local 7 // java.security.Provider p
        11: .line 73
            aload 7 /* p */
            invokevirtual java.security.Provider.getName:()Ljava/lang/String;
            aload 5 /* noCloneProv */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 18
        12: .line 75
            aload 1 /* digestAlgo */
            aload 7 /* p */
            invokestatic java.security.MessageDigest.getInstance:(Ljava/lang/String;Ljava/security/Provider;)Ljava/security/MessageDigest;
        13: .line 74
            astore 11 /* md2 */
        start local 11 // java.security.MessageDigest md2
        14: .line 76
            aload 11 /* md2 */
            instanceof java.lang.Cloneable
            ifeq 18
        15: .line 77
            aload 11 /* md2 */
            astore 3 /* md */
        16: .line 78
            goto 20
        end local 11 // java.security.MessageDigest md2
        17: .line 81
      StackMap locals: com.sun.crypto.provider.HmacCore java.lang.String int java.security.MessageDigest java.security.Provider java.lang.String java.security.Provider[] java.security.Provider int int java.security.Provider[]
      StackMap stack: java.security.NoSuchAlgorithmException
            pop
        end local 7 // java.security.Provider p
        18: .line 71
      StackMap locals: com.sun.crypto.provider.HmacCore java.lang.String int java.security.MessageDigest java.security.Provider java.lang.String java.security.Provider[] top int int java.security.Provider[]
      StackMap stack:
            iinc 8 1
      StackMap locals:
      StackMap stack:
        19: iload 8
            iload 9
            if_icmplt 10
        end local 6 // java.security.Provider[] provs
        end local 5 // java.lang.String noCloneProv
        end local 4 // java.security.Provider sun
        20: .line 87
      StackMap locals: com.sun.crypto.provider.HmacCore java.lang.String int java.security.MessageDigest
      StackMap stack:
            aload 0 /* this */
            aload 3 /* md */
            putfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
        21: .line 88
            aload 0 /* this */
            iload 2 /* bl */
            putfield com.sun.crypto.provider.HmacCore.blockLen:I
        22: .line 89
            aload 0 /* this */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.blockLen:I
            newarray 8
            putfield com.sun.crypto.provider.HmacCore.k_ipad:[B
        23: .line 90
            aload 0 /* this */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.blockLen:I
            newarray 8
            putfield com.sun.crypto.provider.HmacCore.k_opad:[B
        24: .line 91
            aload 0 /* this */
            iconst_1
            putfield com.sun.crypto.provider.HmacCore.first:Z
        25: .line 92
            return
        end local 3 // java.security.MessageDigest md
        end local 2 // int bl
        end local 1 // java.lang.String digestAlgo
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   26     0         this  Lcom/sun/crypto/provider/HmacCore;
            0   26     1   digestAlgo  Ljava/lang/String;
            0   26     2           bl  I
            2   26     3           md  Ljava/security/MessageDigest;
            4   20     4          sun  Ljava/security/Provider;
            8   20     5  noCloneProv  Ljava/lang/String;
            9   20     6        provs  [Ljava/security/Provider;
           11   18     7            p  Ljava/security/Provider;
           14   17    11          md2  Ljava/security/MessageDigest;
      Exception table:
        from    to  target  type
          11    16      17  Class java.security.NoSuchAlgorithmException
    Exceptions:
      throws java.security.NoSuchAlgorithmException
    MethodParameters:
            Name  Flags
      digestAlgo  
      bl          

  protected int engineGetMacLength();
    descriptor: ()I
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.sun.crypto.provider.HmacCore this
         0: .line 100
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            invokevirtual java.security.MessageDigest.getDigestLength:()I
            ireturn
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/sun/crypto/provider/HmacCore;

  protected void engineInit(java.security.Key, java.security.spec.AlgorithmParameterSpec);
    descriptor: (Ljava/security/Key;Ljava/security/spec/AlgorithmParameterSpec;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=6, args_size=3
        start local 0 // com.sun.crypto.provider.HmacCore this
        start local 1 // java.security.Key key
        start local 2 // java.security.spec.AlgorithmParameterSpec params
         0: .line 116
            aload 2 /* params */
            ifnull 4
         1: .line 117
            new java.security.InvalidAlgorithmParameterException
            dup
         2: .line 118
            ldc "HMAC does not use parameters"
         3: .line 117
            invokespecial java.security.InvalidAlgorithmParameterException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 121
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            instanceof javax.crypto.SecretKey
            ifne 6
         5: .line 122
            new java.security.InvalidKeyException
            dup
            ldc "Secret key expected"
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
         6: .line 125
      StackMap locals:
      StackMap stack:
            aload 1 /* key */
            invokeinterface java.security.Key.getEncoded:()[B
            astore 3 /* secret */
        start local 3 // byte[] secret
         7: .line 126
            aload 3 /* secret */
            ifnonnull 9
         8: .line 127
            new java.security.InvalidKeyException
            dup
            ldc "Missing key data"
            invokespecial java.security.InvalidKeyException.<init>:(Ljava/lang/String;)V
            athrow
         9: .line 132
      StackMap locals: byte[]
      StackMap stack:
            aload 3 /* secret */
            arraylength
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.blockLen:I
            if_icmple 13
        10: .line 133
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 3 /* secret */
            invokevirtual java.security.MessageDigest.digest:([B)[B
            astore 4 /* tmp */
        start local 4 // byte[] tmp
        11: .line 135
            aload 3 /* secret */
            iconst_0
            invokestatic java.util.Arrays.fill:([BB)V
        12: .line 136
            aload 4 /* tmp */
            astore 3 /* secret */
        end local 4 // byte[] tmp
        13: .line 140
      StackMap locals:
      StackMap stack:
            iconst_0
            istore 4 /* i */
        start local 4 // int i
        14: goto 21
        15: .line 141
      StackMap locals: int
      StackMap stack:
            iload 4 /* i */
            aload 3 /* secret */
            arraylength
            if_icmpge 16
            aload 3 /* secret */
            iload 4 /* i */
            baload
            goto 17
      StackMap locals:
      StackMap stack:
        16: iconst_0
      StackMap locals:
      StackMap stack: int
        17: istore 5 /* si */
        start local 5 // int si
        18: .line 142
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            iload 4 /* i */
            iload 5 /* si */
            bipush 54
            ixor
            i2b
            bastore
        19: .line 143
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_opad:[B
            iload 4 /* i */
            iload 5 /* si */
            bipush 92
            ixor
            i2b
            bastore
        end local 5 // int si
        20: .line 140
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
        21: iload 4 /* i */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.blockLen:I
            if_icmplt 15
        end local 4 // int i
        22: .line 147
            aload 3 /* secret */
            iconst_0
            invokestatic java.util.Arrays.fill:([BB)V
        23: .line 148
            aconst_null
            astore 3 /* secret */
        24: .line 150
            aload 0 /* this */
            invokevirtual com.sun.crypto.provider.HmacCore.engineReset:()V
        25: .line 151
            return
        end local 3 // byte[] secret
        end local 2 // java.security.spec.AlgorithmParameterSpec params
        end local 1 // java.security.Key key
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   26     0    this  Lcom/sun/crypto/provider/HmacCore;
            0   26     1     key  Ljava/security/Key;
            0   26     2  params  Ljava/security/spec/AlgorithmParameterSpec;
            7   26     3  secret  [B
           11   13     4     tmp  [B
           14   22     4       i  I
           18   20     5      si  I
    Exceptions:
      throws java.security.InvalidKeyException, java.security.InvalidAlgorithmParameterException
    MethodParameters:
        Name  Flags
      key     
      params  

  protected void engineUpdate(byte);
    descriptor: (B)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.sun.crypto.provider.HmacCore this
        start local 1 // byte input
         0: .line 159
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.first:Z
            ifeq 3
         1: .line 161
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            invokevirtual java.security.MessageDigest.update:([B)V
         2: .line 162
            aload 0 /* this */
            iconst_0
            putfield com.sun.crypto.provider.HmacCore.first:Z
         3: .line 166
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            iload 1 /* input */
            invokevirtual java.security.MessageDigest.update:(B)V
         4: .line 167
            return
        end local 1 // byte input
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lcom/sun/crypto/provider/HmacCore;
            0    5     1  input  B
    MethodParameters:
       Name  Flags
      input  

  protected void engineUpdate(byte[], int, int);
    descriptor: ([BII)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // com.sun.crypto.provider.HmacCore this
        start local 1 // byte[] input
        start local 2 // int offset
        start local 3 // int len
         0: .line 178
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.first:Z
            ifeq 3
         1: .line 180
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            invokevirtual java.security.MessageDigest.update:([B)V
         2: .line 181
            aload 0 /* this */
            iconst_0
            putfield com.sun.crypto.provider.HmacCore.first:Z
         3: .line 185
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 1 /* input */
            iload 2 /* offset */
            iload 3 /* len */
            invokevirtual java.security.MessageDigest.update:([BII)V
         4: .line 186
            return
        end local 3 // int len
        end local 2 // int offset
        end local 1 // byte[] input
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lcom/sun/crypto/provider/HmacCore;
            0    5     1   input  [B
            0    5     2  offset  I
            0    5     3     len  I
    MethodParameters:
        Name  Flags
      input   
      offset  
      len     

  protected void engineUpdate(java.nio.ByteBuffer);
    descriptor: (Ljava/nio/ByteBuffer;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.sun.crypto.provider.HmacCore this
        start local 1 // java.nio.ByteBuffer input
         0: .line 195
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.first:Z
            ifeq 3
         1: .line 197
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            invokevirtual java.security.MessageDigest.update:([B)V
         2: .line 198
            aload 0 /* this */
            iconst_0
            putfield com.sun.crypto.provider.HmacCore.first:Z
         3: .line 201
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 1 /* input */
            invokevirtual java.security.MessageDigest.update:(Ljava/nio/ByteBuffer;)V
         4: .line 202
            return
        end local 1 // java.nio.ByteBuffer input
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lcom/sun/crypto/provider/HmacCore;
            0    5     1  input  Ljava/nio/ByteBuffer;
    MethodParameters:
       Name  Flags
      input  

  protected byte[] engineDoFinal();
    descriptor: ()[B
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // com.sun.crypto.provider.HmacCore this
         0: .line 211
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.first:Z
            ifeq 3
         1: .line 213
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            invokevirtual java.security.MessageDigest.update:([B)V
         2: .line 214
            goto 4
         3: .line 215
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield com.sun.crypto.provider.HmacCore.first:Z
         4: .line 220
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            invokevirtual java.security.MessageDigest.digest:()[B
            astore 1 /* tmp */
        start local 1 // byte[] tmp
         5: .line 223
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_opad:[B
            invokevirtual java.security.MessageDigest.update:([B)V
         6: .line 225
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 1 /* tmp */
            invokevirtual java.security.MessageDigest.update:([B)V
         7: .line 227
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            aload 1 /* tmp */
            iconst_0
            aload 1 /* tmp */
            arraylength
            invokevirtual java.security.MessageDigest.digest:([BII)I
            pop
         8: .line 228
            aload 1 /* tmp */
         9: areturn
        end local 1 // byte[] tmp
        10: .line 229
      StackMap locals:
      StackMap stack: java.security.DigestException
            astore 1 /* e */
        start local 1 // java.security.DigestException e
        11: .line 231
            new java.security.ProviderException
            dup
            aload 1 /* e */
            invokespecial java.security.ProviderException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 1 // java.security.DigestException e
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   12     0  this  Lcom/sun/crypto/provider/HmacCore;
            5   10     1   tmp  [B
           11   12     1     e  Ljava/security/DigestException;
      Exception table:
        from    to  target  type
           4     9      10  Class java.security.DigestException

  protected void engineReset();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.sun.crypto.provider.HmacCore this
         0: .line 240
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.first:Z
            ifne 3
         1: .line 241
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            invokevirtual java.security.MessageDigest.reset:()V
         2: .line 242
            aload 0 /* this */
            iconst_1
            putfield com.sun.crypto.provider.HmacCore.first:Z
         3: .line 244
      StackMap locals:
      StackMap stack:
            return
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/sun/crypto/provider/HmacCore;

  public java.lang.Object clone();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // com.sun.crypto.provider.HmacCore this
         0: .line 250
            aload 0 /* this */
            invokespecial javax.crypto.MacSpi.clone:()Ljava/lang/Object;
            checkcast com.sun.crypto.provider.HmacCore
            astore 1 /* copy */
        start local 1 // com.sun.crypto.provider.HmacCore copy
         1: .line 251
            aload 1 /* copy */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
            invokevirtual java.security.MessageDigest.clone:()Ljava/lang/Object;
            checkcast java.security.MessageDigest
            putfield com.sun.crypto.provider.HmacCore.md:Ljava/security/MessageDigest;
         2: .line 252
            aload 1 /* copy */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_ipad:[B
            invokevirtual byte[].clone:()Ljava/lang/Object;
            checkcast byte[]
            putfield com.sun.crypto.provider.HmacCore.k_ipad:[B
         3: .line 253
            aload 1 /* copy */
            aload 0 /* this */
            getfield com.sun.crypto.provider.HmacCore.k_opad:[B
            invokevirtual byte[].clone:()Ljava/lang/Object;
            checkcast byte[]
            putfield com.sun.crypto.provider.HmacCore.k_opad:[B
         4: .line 254
            aload 1 /* copy */
            areturn
        end local 1 // com.sun.crypto.provider.HmacCore copy
        end local 0 // com.sun.crypto.provider.HmacCore this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lcom/sun/crypto/provider/HmacCore;
            1    5     1  copy  Lcom/sun/crypto/provider/HmacCore;
    Exceptions:
      throws java.lang.CloneNotSupportedException
}
SourceFile: "HmacCore.java"
NestMembers:
  com.sun.crypto.provider.HmacCore$HmacSHA224  com.sun.crypto.provider.HmacCore$HmacSHA256  com.sun.crypto.provider.HmacCore$HmacSHA384  com.sun.crypto.provider.HmacCore$HmacSHA512  com.sun.crypto.provider.HmacCore$HmacSHA512_224  com.sun.crypto.provider.HmacCore$HmacSHA512_256
InnerClasses:
  public final HmacSHA224 = com.sun.crypto.provider.HmacCore$HmacSHA224 of com.sun.crypto.provider.HmacCore
  public final HmacSHA256 = com.sun.crypto.provider.HmacCore$HmacSHA256 of com.sun.crypto.provider.HmacCore
  public final HmacSHA384 = com.sun.crypto.provider.HmacCore$HmacSHA384 of com.sun.crypto.provider.HmacCore
  public final HmacSHA512 = com.sun.crypto.provider.HmacCore$HmacSHA512 of com.sun.crypto.provider.HmacCore
  public final HmacSHA512_224 = com.sun.crypto.provider.HmacCore$HmacSHA512_224 of com.sun.crypto.provider.HmacCore
  public final HmacSHA512_256 = com.sun.crypto.provider.HmacCore$HmacSHA512_256 of com.sun.crypto.provider.HmacCore