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 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 org.bouncycastle.util.Memoable ipadState;
    descriptor: Lorg/bouncycastle/util/Memoable;
    flags: (0x0002) ACC_PRIVATE

  private org.bouncycastle.util.Memoable opadState;
    descriptor: Lorg/bouncycastle/util/Memoable;
    flags: (0x0002) ACC_PRIVATE

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

  private byte[] outputBuf;
    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=3, locals=0, args_size=0
         0: .line 37
            new java.util.Hashtable
            dup
            invokespecial java.util.Hashtable.<init>:()V
            putstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
         1: .line 39
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "GOST3411"
            bipush 32
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         2: .line 41
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD2"
            bipush 16
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         3: .line 42
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD4"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         4: .line 43
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "MD5"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         5: .line 45
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "RIPEMD128"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         6: .line 46
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "RIPEMD160"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 48
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-1"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         8: .line 49
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-224"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         9: .line 50
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-256"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        10: .line 51
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-384"
            sipush 128
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        11: .line 52
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "SHA-512"
            sipush 128
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        12: .line 54
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "Tiger"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        13: .line 55
            getstatic org.bouncycastle.crypto.macs.HMac.blockLengths:Ljava/util/Hashtable;
            ldc "Whirlpool"
            bipush 64
            invokestatic org.bouncycastle.util.Integers.valueOf:(I)Ljava/lang/Integer;
            invokevirtual java.util.Hashtable.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        14: .line 56
            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 61
            aload 0 /* digest */
            instanceof org.bouncycastle.crypto.ExtendedDigest
            ifeq 2
         1: .line 63
            aload 0 /* digest */
            checkcast org.bouncycastle.crypto.ExtendedDigest
            invokeinterface org.bouncycastle.crypto.ExtendedDigest.getByteLength:()I
            ireturn
         2: .line 66
      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 68
            aload 1 /* b */
            ifnonnull 5
         4: .line 70
            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 73
      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 85
            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 86
            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=3, 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 88
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 92
            aload 0 /* this */
            aload 1 /* digest */
            putfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
         2: .line 93
            aload 0 /* this */
            aload 1 /* digest */
            invokeinterface org.bouncycastle.crypto.Digest.getDigestSize:()I
            putfield org.bouncycastle.crypto.macs.HMac.digestSize:I
         3: .line 94
            aload 0 /* this */
            iload 2 /* byteLength */
            putfield org.bouncycastle.crypto.macs.HMac.blockLength:I
         4: .line 95
            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 96
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digestSize:I
            iadd
            newarray 8
            putfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
         6: .line 97
            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 101
            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 106
            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=5, args_size=2
        start local 0 // org.bouncycastle.crypto.macs.HMac this
        start local 1 // org.bouncycastle.crypto.CipherParameters params
         0: .line 112
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.reset:()V
         1: .line 114
            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 115
            aload 2 /* key */
            arraylength
            istore 3 /* keyLength */
        start local 3 // int keyLength
         3: .line 117
            iload 3 /* keyLength */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            if_icmple 8
         4: .line 119
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 2 /* key */
            iconst_0
            iload 3 /* keyLength */
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         5: .line 120
            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
         6: .line 122
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digestSize:I
            istore 3 /* keyLength */
         7: .line 123
            goto 9
         8: .line 126
      StackMap locals: byte[] int
      StackMap stack:
            aload 2 /* key */
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            iload 3 /* keyLength */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         9: .line 129
      StackMap locals:
      StackMap stack:
            iload 3 /* keyLength */
            istore 4 /* i */
        start local 4 // int i
        10: goto 13
        11: .line 131
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iload 4 /* i */
            iconst_0
            bastore
        12: .line 129
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
        13: iload 4 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            arraylength
            if_icmplt 11
        end local 4 // int i
        14: .line 134
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        15: .line 136
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.inputPad:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            bipush 54
            invokestatic org.bouncycastle.crypto.macs.HMac.xorPad:([BIB)V
        16: .line 137
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            bipush 92
            invokestatic org.bouncycastle.crypto.macs.HMac.xorPad:([BIB)V
        17: .line 139
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            instanceof org.bouncycastle.util.Memoable
            ifeq 20
        18: .line 141
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            checkcast org.bouncycastle.util.Memoable
            invokeinterface org.bouncycastle.util.Memoable.copy:()Lorg/bouncycastle/util/Memoable;
            putfield org.bouncycastle.crypto.macs.HMac.opadState:Lorg/bouncycastle/util/Memoable;
        19: .line 143
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.opadState:Lorg/bouncycastle/util/Memoable;
            checkcast org.bouncycastle.crypto.Digest
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
        20: .line 146
      StackMap locals:
      StackMap stack:
            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
        21: .line 148
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            instanceof org.bouncycastle.util.Memoable
            ifeq 23
        22: .line 150
            aload 0 /* this */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            checkcast org.bouncycastle.util.Memoable
            invokeinterface org.bouncycastle.util.Memoable.copy:()Lorg/bouncycastle/util/Memoable;
            putfield org.bouncycastle.crypto.macs.HMac.ipadState:Lorg/bouncycastle/util/Memoable;
        23: .line 152
      StackMap locals:
      StackMap stack:
            return
        end local 3 // int keyLength
        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   24     0       this  Lorg/bouncycastle/crypto/macs/HMac;
            0   24     1     params  Lorg/bouncycastle/crypto/CipherParameters;
            2   24     2        key  [B
            3   24     3  keyLength  I
           10   14     4          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 156
            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 162
            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 163
            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 170
            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 171
            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 177
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            invokeinterface org.bouncycastle.crypto.Digest.doFinal:([BI)I
            pop
         1: .line 179
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.opadState:Lorg/bouncycastle/util/Memoable;
            ifnull 5
         2: .line 181
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            checkcast org.bouncycastle.util.Memoable
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.opadState:Lorg/bouncycastle/util/Memoable;
            invokeinterface org.bouncycastle.util.Memoable.reset:(Lorg/bouncycastle/util/Memoable;)V
         3: .line 182
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.getDigestSize:()I
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         4: .line 183
            goto 6
         5: .line 186
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            iconst_0
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            arraylength
            invokeinterface org.bouncycastle.crypto.Digest.update:([BII)V
         6: .line 189
      StackMap locals:
      StackMap stack:
            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 3 /* len */
        start local 3 // int len
         7: .line 191
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.blockLength:I
            istore 4 /* i */
        start local 4 // int i
         8: goto 11
         9: .line 193
      StackMap locals: int int
      StackMap stack:
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            iload 4 /* i */
            iconst_0
            bastore
        10: .line 191
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
        11: iload 4 /* i */
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.outputBuf:[B
            arraylength
            if_icmplt 9
        end local 4 // int i
        12: .line 196
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.ipadState:Lorg/bouncycastle/util/Memoable;
            ifnull 15
        13: .line 198
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            checkcast org.bouncycastle.util.Memoable
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.ipadState:Lorg/bouncycastle/util/Memoable;
            invokeinterface org.bouncycastle.util.Memoable.reset:(Lorg/bouncycastle/util/Memoable;)V
        14: .line 199
            goto 16
        15: .line 202
      StackMap locals:
      StackMap stack:
            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
        16: .line 205
      StackMap locals:
      StackMap stack:
            iload 3 /* len */
            ireturn
        end local 3 // int len
        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   17     0    this  Lorg/bouncycastle/crypto/macs/HMac;
            0   17     1     out  [B
            0   17     2  outOff  I
            7   17     3     len  I
            8   12     4       i  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 216
            aload 0 /* this */
            getfield org.bouncycastle.crypto.macs.HMac.digest:Lorg/bouncycastle/crypto/Digest;
            invokeinterface org.bouncycastle.crypto.Digest.reset:()V
         1: .line 221
            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 222
            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;

  private static void xorPad(byte[], int, byte);
    descriptor: ([BIB)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // byte[] pad
        start local 1 // int len
        start local 2 // byte n
         0: .line 226
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         1: goto 4
         2: .line 228
      StackMap locals: int
      StackMap stack:
            aload 0 /* pad */
            iload 3 /* i */
            dup2
            baload
            iload 2 /* n */
            ixor
            i2b
            bastore
         3: .line 226
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         4: iload 3 /* i */
            iload 1 /* len */
            if_icmplt 2
        end local 3 // int i
         5: .line 230
            return
        end local 2 // byte n
        end local 1 // int len
        end local 0 // byte[] pad
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0   pad  [B
            0    6     1   len  I
            0    6     2     n  B
            1    5     3     i  I
    MethodParameters:
      Name  Flags
      pad   
      len   
      n     
}
SourceFile: "HMac.java"