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 class org.bouncycastle.crypto.macs.HMac implements org.bouncycastle.crypto.Mac
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.macs.HMac
  super_class: java.lang.Object
{
  private static final byte IPAD;
    descriptor: B
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 54

  private static final byte OPAD;
    descriptor: B
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 92

  private org.bouncycastle.crypto.Digest digest;
    descriptor: Lorg/bouncycastle/crypto/Digest;
    flags: (0x0002) ACC_PRIVATE

  private int digestSize;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private int blockLength;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

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

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

  private static java.util.Hashtable blockLengths;
    descriptor: Ljava/util/Hashtable;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=0, args_size=0
         0: .line 33
            new java.util.Hashtable
            dup
            invokespecial java.util.Hashtable.<init>:()V
            putstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
         1: .line 35
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "GOST3411"
            new java.lang.Integer
            dup
            bipush 32
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         2: .line 37
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD2"
            new java.lang.Integer
            dup
            bipush 16
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         3: .line 38
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD4"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         4: .line 39
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD5"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         5: .line 41
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "RIPEMD128"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         6: .line 42
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "RIPEMD160"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 44
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-1"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         8: .line 45
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-224"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         9: .line 46
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-256"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        10: .line 47
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-384"
            new java.lang.Integer
            dup
            sipush 128
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        11: .line 48
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-512"
            new java.lang.Integer
            dup
            sipush 128
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        12: .line 50
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "Tiger"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        13: .line 51
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "Whirlpool"
            new java.lang.Integer
            dup
            bipush 64
            invokespecial java.lang.Integer.<init>:(I)V
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        14: .line 52
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private static int getByteLength(org.bouncycastle.crypto.Digest);
    descriptor: (Lorg/bouncycastle/crypto/Digest;)I
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // org.bouncycastle.crypto.Digest digest
         0: .line 57
            aload 0 /* digest */
            instanceof org.bouncycastle.crypto.ExtendedDigest
            ifeq 2
         1: .line 59
            aload 0 /* digest */
            checkcast org.bouncycastle.crypto.ExtendedDigest
            invokeinterface org.bouncycastle.crypto.ExtendedDigest.getByteLength:()I
            ireturn
         2: .line 62
      StackMap locals:
      StackMap stack:
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            aload 0 /* digest */
            invokeinterface org.bouncycastle.crypto.Digest.getAlgorithmName:()Ljava/lang/String;
            invokevirtual java.util.Hashtable.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Integer
            astore 1 /* b */
        start local 1 // java.lang.Integer b
         3: .line 64
            aload 1 /* b */
            ifnonnull 5
         4: .line 66
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "unknown digest passed: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* digest */
            invokeinterface org.bouncycastle.crypto.Digest.getAlgorithmName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 69
      StackMap locals: java.lang.Integer
      StackMap stack:
            aload 1 /* b */
            invokevirtual java.lang.Integer.intValue:()I
            ireturn
        end local 1 // java.lang.Integer b
        end local 0 // org.bouncycastle.crypto.Digest digest
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    6     0  digest  Lorg/bouncycastle/crypto/Digest;
            3    6     1       b  Ljava/lang/Integer;
    MethodParameters:
        Name  Flags
      digest  

  public void <init>(org.bouncycastle.crypto.Digest);
    descriptor: (Lorg/bouncycastle/crypto/Digest;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // org.bouncycastle.crypto.Digest digest
         0: .line 81
            aload 0 /* this */
            aload 1 /* digest */
            aload 1 /* digest */
            invokestatic org.bouncycastle.crypto.macs.HMac.getByteLength:(Lorg/bouncycastle/crypto/Digest;)I
            invokespecial org.bouncycastle.crypto.macs.HMac.<init>:(Lorg/bouncycastle/crypto/Digest;I)V
         1: .line 82
            return
        end local 1 // org.bouncycastle.crypto.Digest digest
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/crypto/macs/HMac;
            0    2     1  digest  Lorg/bouncycastle/crypto/Digest;
    MethodParameters:
        Name  Flags
      digest  

  private void <init>(org.bouncycastle.crypto.Digest, int);
    descriptor: (Lorg/bouncycastle/crypto/Digest;I)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // org.bouncycastle.crypto.Digest digest
        start local 2 // int byteLength
         0: .line 84
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 88
            aload 0 /* this */
            aload 1 /* digest */
            putfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
         2: .line 89
            aload 0 /* this */
            aload 1 /* digest */
            invokeinterface org.bouncycastle.crypto.Digest.getDigestSize:()I
            putfield org.bouncycastle.crypto.macs.HMac.digestSize:I
         3: .line 91
            aload 0 /* this */
            iload 2 /* byteLength */
            putfield org.bouncycastle.crypto.macs.HMac.blockLength:I
         4: .line 93
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            newarray 8
            putfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
         5: .line 94
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            newarray 8
            putfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
         6: .line 95
            return
        end local 2 // int byteLength
        end local 1 // org.bouncycastle.crypto.Digest digest
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    7     0        this  Lorg/bouncycastle/crypto/macs/HMac;
            0    7     1      digest  Lorg/bouncycastle/crypto/Digest;
            0    7     2  byteLength  I
    MethodParameters:
            Name  Flags
      digest      
      byteLength  

  public java.lang.String getAlgorithmName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.macs.HMac this
         0: .line 99
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.getAlgorithmName:()Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc "/HMAC"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/macs/HMac;

  public org.bouncycastle.crypto.Digest getUnderlyingDigest();
    descriptor: ()Lorg/bouncycastle/crypto/Digest;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.macs.HMac this
         0: .line 104
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            areturn
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/macs/HMac;

  public void init(org.bouncycastle.crypto.CipherParameters);
    descriptor: (Lorg/bouncycastle/crypto/CipherParameters;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=2
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // org.bouncycastle.crypto.CipherParameters params
         0: .line 110
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.reset:()V
         1: .line 112
            aload 1 /* params */
            checkcast org.bouncycastle.crypto.params.KeyParameter
            invokevirtual org.bouncycastle.crypto.params.KeyParameter.getKey:()[B
            astore 2 /* key */
        start local 2 // byte[] key
         2: .line 114
            aload 2 /* key */
            arraylength
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            if_icmple 11
         3: .line 116
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 2 /* key */
            iconst_0
            aload 2 /* key */
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         4: .line 117
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            invokeinterface org.bouncycastle.crypto.Digest.doFinal:([BI)I
            pop
         5: .line 118
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digestSize:I
            istore 3 /* i */
        start local 3 // int i
         6: goto 9
         7: .line 120
      StackMap locals: byte[] int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iload 3 /* i */
            iconst_0
            bastore
         8: .line 118
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         9: iload 3 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            if_icmplt 7
        end local 3 // int i
        10: .line 122
            goto 17
        11: .line 125
      StackMap locals:
      StackMap stack:
            aload 2 /* key */
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            aload 2 /* key */
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        12: .line 126
            aload 2 /* key */
            arraylength
            istore 3 /* i */
        start local 3 // int i
        13: goto 16
        14: .line 128
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iload 3 /* i */
            iconst_0
            bastore
        15: .line 126
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
        16: iload 3 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            if_icmplt 14
        end local 3 // int i
        17: .line 132
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            newarray 8
            putfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
        18: .line 133
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        19: .line 135
            iconst_0
            istore 3 /* i */
        start local 3 // int i
        20: goto 23
        21: .line 137
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iload 3 /* i */
            dup2
            baload
            bipush 54
            ixor
            i2b
            bastore
        22: .line 135
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
        23: iload 3 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            if_icmplt 21
        end local 3 // int i
        24: .line 140
            iconst_0
            istore 3 /* i */
        start local 3 // int i
        25: goto 28
        26: .line 142
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
            iload 3 /* i */
            dup2
            baload
            bipush 92
            ixor
            i2b
            bastore
        27: .line 140
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
        28: iload 3 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
            arraylength
            if_icmplt 26
        end local 3 // int i
        29: .line 145
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
        30: .line 146
            return
        end local 2 // byte[] key
        end local 1 // org.bouncycastle.crypto.CipherParameters params
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   31     0    this  Lorg/bouncycastle/crypto/macs/HMac;
            0   31     1  params  Lorg/bouncycastle/crypto/CipherParameters;
            2   31     2     key  [B
            6   10     3       i  I
           13   17     3       i  I
           20   24     3       i  I
           25   29     3       i  I
    MethodParameters:
        Name  Flags
      params  

  public int getMacSize();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.macs.HMac this
         0: .line 150
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digestSize:I
            ireturn
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/macs/HMac;

  public void update(byte);
    descriptor: (B)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // byte in
         0: .line 156
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            iload 1 /* in */
            invokeinterface org.bouncycastle.crypto.Digest.update:(B)V
         1: .line 157
            return
        end local 1 // byte in
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/macs/HMac;
            0    2     1    in  B
    MethodParameters:
      Name  Flags
      in    

  public void update(byte[], int, int);
    descriptor: ([BII)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=4
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // byte[] in
        start local 2 // int inOff
        start local 3 // int len
         0: .line 164
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 1 /* in */
            iload 2 /* inOff */
            iload 3 /* len */
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         1: .line 165
            return
        end local 3 // int len
        end local 2 // int inOff
        end local 1 // byte[] in
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/bouncycastle/crypto/macs/HMac;
            0    2     1     in  [B
            0    2     2  inOff  I
            0    2     3    len  I
    MethodParameters:
       Name  Flags
      in     
      inOff  
      len    

  public int doFinal(byte[], int);
    descriptor: ([BI)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=5, args_size=3
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // byte[] out
        start local 2 // int outOff
         0: .line 171
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digestSize:I
            newarray 8
            astore 3 /* tmp */
        start local 3 // byte[] tmp
         1: .line 172
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 3 /* tmp */
            iconst_0
            invokeinterface org.bouncycastle.crypto.Digest.doFinal:([BI)I
            pop
         2: .line 174
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputPad:[B
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         3: .line 175
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 3 /* tmp */
            iconst_0
            aload 3 /* tmp */
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         4: .line 177
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 1 /* out */
            iload 2 /* outOff */
            invokeinterface org.bouncycastle.crypto.Digest.doFinal:([BI)I
            istore 4 /* len */
        start local 4 // int len
         5: .line 179
            aload 0 /* this */
            invokevirtual org.bouncycastle.crypto.macs.HMac.reset:()V
         6: .line 181
            iload 4 /* len */
            ireturn
        end local 4 // int len
        end local 3 // byte[] tmp
        end local 2 // int outOff
        end local 1 // byte[] out
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    7     0    this  Lorg/bouncycastle/crypto/macs/HMac;
            0    7     1     out  [B
            0    7     2  outOff  I
            1    7     3     tmp  [B
            5    7     4     len  I
    MethodParameters:
        Name  Flags
      out     
      outOff  

  public void reset();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.macs.HMac this
         0: .line 192
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.reset:()V
         1: .line 197
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         2: .line 198
            return
        end local 0 // org.bouncycastle.crypto.macs.HMac this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/bouncycastle/crypto/macs/HMac;
}
SourceFile: "HMac.java"