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. 
class org.bouncycastle.math.ec.WTauNafMultiplier implements org.bouncycastle.math.ec.ECMultiplier
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.math.ec.WTauNafMultiplier
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
         0: .line 9
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/math/ec/WTauNafMultiplier;

  public org.bouncycastle.math.ec.ECPoint multiply(org.bouncycastle.math.ec.ECPoint, java.math.BigInteger, org.bouncycastle.math.ec.PreCompInfo);
    descriptor: (Lorg/bouncycastle/math/ec/ECPoint;Ljava/math/BigInteger;Lorg/bouncycastle/math/ec/PreCompInfo;)Lorg/bouncycastle/math/ec/ECPoint;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=11, args_size=4
        start local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
        start local 1 // org.bouncycastle.math.ec.ECPoint point
        start local 2 // java.math.BigInteger k
        start local 3 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
         0: .line 21
            aload 1 /* point */
            instanceof org.bouncycastle.math.ec.ECPoint$F2m
            ifne 2
         1: .line 23
            new java.lang.IllegalArgumentException
            dup
            ldc "Only ECPoint.F2m can be used in WTauNafMultiplier"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 27
      StackMap locals:
      StackMap stack:
            aload 1 /* point */
            checkcast org.bouncycastle.math.ec.ECPoint$F2m
            astore 4 /* p */
        start local 4 // org.bouncycastle.math.ec.ECPoint$F2m p
         3: .line 29
            aload 4 /* p */
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.getCurve:()Lorg/bouncycastle/math/ec/ECCurve;
            checkcast org.bouncycastle.math.ec.ECCurve$F2m
            astore 5 /* curve */
        start local 5 // org.bouncycastle.math.ec.ECCurve$F2m curve
         4: .line 30
            aload 5 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve$F2m.getM:()I
            istore 6 /* m */
        start local 6 // int m
         5: .line 31
            aload 5 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve$F2m.getA:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.byteValue:()B
            istore 7 /* a */
        start local 7 // byte a
         6: .line 32
            aload 5 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve$F2m.getMu:()B
            istore 8 /* mu */
        start local 8 // byte mu
         7: .line 33
            aload 5 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve$F2m.getSi:()[Ljava/math/BigInteger;
            astore 9 /* s */
        start local 9 // java.math.BigInteger[] s
         8: .line 35
            aload 2 /* k */
            iload 6 /* m */
            iload 7 /* a */
            aload 9 /* s */
            iload 8 /* mu */
            bipush 10
            invokestatic org.bouncycastle.math.ec.Tnaf.partModReduction:(Ljava/math/BigInteger;IB[Ljava/math/BigInteger;BB)Lorg/bouncycastle/math/ec/ZTauElement;
            astore 10 /* rho */
        start local 10 // org.bouncycastle.math.ec.ZTauElement rho
         9: .line 37
            aload 0 /* this */
            aload 4 /* p */
            aload 10 /* rho */
            aload 3 /* preCompInfo */
            iload 7 /* a */
            iload 8 /* mu */
            invokevirtual org.bouncycastle.math.ec.WTauNafMultiplier.multiplyWTnaf:(Lorg/bouncycastle/math/ec/ECPoint$F2m;Lorg/bouncycastle/math/ec/ZTauElement;Lorg/bouncycastle/math/ec/PreCompInfo;BB)Lorg/bouncycastle/math/ec/ECPoint$F2m;
            areturn
        end local 10 // org.bouncycastle.math.ec.ZTauElement rho
        end local 9 // java.math.BigInteger[] s
        end local 8 // byte mu
        end local 7 // byte a
        end local 6 // int m
        end local 5 // org.bouncycastle.math.ec.ECCurve$F2m curve
        end local 4 // org.bouncycastle.math.ec.ECPoint$F2m p
        end local 3 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
        end local 2 // java.math.BigInteger k
        end local 1 // org.bouncycastle.math.ec.ECPoint point
        end local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   10     0         this  Lorg/bouncycastle/math/ec/WTauNafMultiplier;
            0   10     1        point  Lorg/bouncycastle/math/ec/ECPoint;
            0   10     2            k  Ljava/math/BigInteger;
            0   10     3  preCompInfo  Lorg/bouncycastle/math/ec/PreCompInfo;
            3   10     4            p  Lorg/bouncycastle/math/ec/ECPoint$F2m;
            4   10     5        curve  Lorg/bouncycastle/math/ec/ECCurve$F2m;
            5   10     6            m  I
            6   10     7            a  B
            7   10     8           mu  B
            8   10     9            s  [Ljava/math/BigInteger;
            9   10    10          rho  Lorg/bouncycastle/math/ec/ZTauElement;
    MethodParameters:
             Name  Flags
      point        
      k            
      preCompInfo  

  private org.bouncycastle.math.ec.ECPoint$F2m multiplyWTnaf(org.bouncycastle.math.ec.ECPoint$F2m, org.bouncycastle.math.ec.ZTauElement, org.bouncycastle.math.ec.PreCompInfo, byte, byte);
    descriptor: (Lorg/bouncycastle/math/ec/ECPoint$F2m;Lorg/bouncycastle/math/ec/ZTauElement;Lorg/bouncycastle/math/ec/PreCompInfo;BB)Lorg/bouncycastle/math/ec/ECPoint$F2m;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=6, locals=9, args_size=6
        start local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
        start local 1 // org.bouncycastle.math.ec.ECPoint$F2m p
        start local 2 // org.bouncycastle.math.ec.ZTauElement lambda
        start local 3 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
        start local 4 // byte a
        start local 5 // byte mu
         0: .line 54
            iload 4 /* a */
            ifne 3
         1: .line 56
            getstatic org.bouncycastle.math.ec.Tnaf.alpha0:[Lorg/bouncycastle/math/ec/ZTauElement;
            astore 6 /* alpha */
        start local 6 // org.bouncycastle.math.ec.ZTauElement[] alpha
         2: .line 57
            goto 4
        end local 6 // org.bouncycastle.math.ec.ZTauElement[] alpha
         3: .line 61
      StackMap locals:
      StackMap stack:
            getstatic org.bouncycastle.math.ec.Tnaf.alpha1:[Lorg/bouncycastle/math/ec/ZTauElement;
            astore 6 /* alpha */
        start local 6 // org.bouncycastle.math.ec.ZTauElement[] alpha
         4: .line 64
      StackMap locals: org.bouncycastle.math.ec.ZTauElement[]
      StackMap stack:
            iload 5 /* mu */
            iconst_4
            invokestatic org.bouncycastle.math.ec.Tnaf.getTw:(BI)Ljava/math/BigInteger;
            astore 7 /* tw */
        start local 7 // java.math.BigInteger tw
         5: .line 66
            iload 5 /* mu */
            aload 2 /* lambda */
            iconst_4
         6: .line 67
            ldc 16
            invokestatic java.math.BigInteger.valueOf:(J)Ljava/math/BigInteger;
            aload 7 /* tw */
            aload 6 /* alpha */
         7: .line 66
            invokestatic org.bouncycastle.math.ec.Tnaf.tauAdicWNaf:(BLorg/bouncycastle/math/ec/ZTauElement;BLjava/math/BigInteger;Ljava/math/BigInteger;[Lorg/bouncycastle/math/ec/ZTauElement;)[B
            astore 8 /* u */
        start local 8 // byte[] u
         8: .line 69
            aload 1 /* p */
            aload 8 /* u */
            aload 3 /* preCompInfo */
            invokestatic org.bouncycastle.math.ec.WTauNafMultiplier.multiplyFromWTnaf:(Lorg/bouncycastle/math/ec/ECPoint$F2m;[BLorg/bouncycastle/math/ec/PreCompInfo;)Lorg/bouncycastle/math/ec/ECPoint$F2m;
            areturn
        end local 8 // byte[] u
        end local 7 // java.math.BigInteger tw
        end local 6 // org.bouncycastle.math.ec.ZTauElement[] alpha
        end local 5 // byte mu
        end local 4 // byte a
        end local 3 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
        end local 2 // org.bouncycastle.math.ec.ZTauElement lambda
        end local 1 // org.bouncycastle.math.ec.ECPoint$F2m p
        end local 0 // org.bouncycastle.math.ec.WTauNafMultiplier this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    9     0         this  Lorg/bouncycastle/math/ec/WTauNafMultiplier;
            0    9     1            p  Lorg/bouncycastle/math/ec/ECPoint$F2m;
            0    9     2       lambda  Lorg/bouncycastle/math/ec/ZTauElement;
            0    9     3  preCompInfo  Lorg/bouncycastle/math/ec/PreCompInfo;
            0    9     4            a  B
            0    9     5           mu  B
            2    3     6        alpha  [Lorg/bouncycastle/math/ec/ZTauElement;
            4    9     6        alpha  [Lorg/bouncycastle/math/ec/ZTauElement;
            5    9     7           tw  Ljava/math/BigInteger;
            8    9     8            u  [B
    MethodParameters:
             Name  Flags
      p            
      lambda       
      preCompInfo  
      a            
      mu           

  private static org.bouncycastle.math.ec.ECPoint$F2m multiplyFromWTnaf(org.bouncycastle.math.ec.ECPoint$F2m, byte[], org.bouncycastle.math.ec.PreCompInfo);
    descriptor: (Lorg/bouncycastle/math/ec/ECPoint$F2m;[BLorg/bouncycastle/math/ec/PreCompInfo;)Lorg/bouncycastle/math/ec/ECPoint$F2m;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=8, args_size=3
        start local 0 // org.bouncycastle.math.ec.ECPoint$F2m p
        start local 1 // byte[] u
        start local 2 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
         0: .line 84
            aload 0 /* p */
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.getCurve:()Lorg/bouncycastle/math/ec/ECCurve;
            checkcast org.bouncycastle.math.ec.ECCurve$F2m
            astore 3 /* curve */
        start local 3 // org.bouncycastle.math.ec.ECCurve$F2m curve
         1: .line 85
            aload 3 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve$F2m.getA:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            invokevirtual java.math.BigInteger.byteValue:()B
            istore 4 /* a */
        start local 4 // byte a
         2: .line 88
            aload 2 /* preCompInfo */
            ifnull 3
            aload 2 /* preCompInfo */
            instanceof org.bouncycastle.math.ec.WTauNafPreCompInfo
            ifne 6
         3: .line 90
      StackMap locals: org.bouncycastle.math.ec.ECCurve$F2m int
      StackMap stack:
            aload 0 /* p */
            iload 4 /* a */
            invokestatic org.bouncycastle.math.ec.Tnaf.getPreComp:(Lorg/bouncycastle/math/ec/ECPoint$F2m;B)[Lorg/bouncycastle/math/ec/ECPoint$F2m;
            astore 5 /* pu */
        start local 5 // org.bouncycastle.math.ec.ECPoint$F2m[] pu
         4: .line 91
            aload 0 /* p */
            new org.bouncycastle.math.ec.WTauNafPreCompInfo
            dup
            aload 5 /* pu */
            invokespecial org.bouncycastle.math.ec.WTauNafPreCompInfo.<init>:([Lorg/bouncycastle/math/ec/ECPoint$F2m;)V
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.setPreCompInfo:(Lorg/bouncycastle/math/ec/PreCompInfo;)V
         5: .line 92
            goto 7
        end local 5 // org.bouncycastle.math.ec.ECPoint$F2m[] pu
         6: .line 95
      StackMap locals:
      StackMap stack:
            aload 2 /* preCompInfo */
            checkcast org.bouncycastle.math.ec.WTauNafPreCompInfo
            invokevirtual org.bouncycastle.math.ec.WTauNafPreCompInfo.getPreComp:()[Lorg/bouncycastle/math/ec/ECPoint$F2m;
            astore 5 /* pu */
        start local 5 // org.bouncycastle.math.ec.ECPoint$F2m[] pu
         7: .line 99
      StackMap locals: org.bouncycastle.math.ec.ECPoint$F2m[]
      StackMap stack:
            aload 0 /* p */
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.getCurve:()Lorg/bouncycastle/math/ec/ECCurve;
            invokevirtual org.bouncycastle.math.ec.ECCurve.getInfinity:()Lorg/bouncycastle/math/ec/ECPoint;
            checkcast org.bouncycastle.math.ec.ECPoint$F2m
            astore 6 /* q */
        start local 6 // org.bouncycastle.math.ec.ECPoint$F2m q
         8: .line 100
            aload 1 /* u */
            arraylength
            iconst_1
            isub
            istore 7 /* i */
        start local 7 // int i
         9: goto 17
        10: .line 102
      StackMap locals: org.bouncycastle.math.ec.ECPoint$F2m int
      StackMap stack:
            aload 6 /* q */
            invokestatic org.bouncycastle.math.ec.Tnaf.tau:(Lorg/bouncycastle/math/ec/ECPoint$F2m;)Lorg/bouncycastle/math/ec/ECPoint$F2m;
            astore 6 /* q */
        11: .line 103
            aload 1 /* u */
            iload 7 /* i */
            baload
            ifeq 16
        12: .line 105
            aload 1 /* u */
            iload 7 /* i */
            baload
            ifle 15
        13: .line 107
            aload 6 /* q */
            aload 5 /* pu */
            aload 1 /* u */
            iload 7 /* i */
            baload
            aaload
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.addSimple:(Lorg/bouncycastle/math/ec/ECPoint$F2m;)Lorg/bouncycastle/math/ec/ECPoint$F2m;
            astore 6 /* q */
        14: .line 108
            goto 16
        15: .line 112
      StackMap locals:
      StackMap stack:
            aload 6 /* q */
            aload 5 /* pu */
            aload 1 /* u */
            iload 7 /* i */
            baload
            ineg
            aaload
            invokevirtual org.bouncycastle.math.ec.ECPoint$F2m.subtractSimple:(Lorg/bouncycastle/math/ec/ECPoint$F2m;)Lorg/bouncycastle/math/ec/ECPoint$F2m;
            astore 6 /* q */
        16: .line 100
      StackMap locals:
      StackMap stack:
            iinc 7 /* i */ -1
      StackMap locals:
      StackMap stack:
        17: iload 7 /* i */
            ifge 10
        end local 7 // int i
        18: .line 117
            aload 6 /* q */
            areturn
        end local 6 // org.bouncycastle.math.ec.ECPoint$F2m q
        end local 5 // org.bouncycastle.math.ec.ECPoint$F2m[] pu
        end local 4 // byte a
        end local 3 // org.bouncycastle.math.ec.ECCurve$F2m curve
        end local 2 // org.bouncycastle.math.ec.PreCompInfo preCompInfo
        end local 1 // byte[] u
        end local 0 // org.bouncycastle.math.ec.ECPoint$F2m p
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   19     0            p  Lorg/bouncycastle/math/ec/ECPoint$F2m;
            0   19     1            u  [B
            0   19     2  preCompInfo  Lorg/bouncycastle/math/ec/PreCompInfo;
            1   19     3        curve  Lorg/bouncycastle/math/ec/ECCurve$F2m;
            2   19     4            a  B
            4    6     5           pu  [Lorg/bouncycastle/math/ec/ECPoint$F2m;
            7   19     5           pu  [Lorg/bouncycastle/math/ec/ECPoint$F2m;
            8   19     6            q  Lorg/bouncycastle/math/ec/ECPoint$F2m;
            9   18     7            i  I
    MethodParameters:
             Name  Flags
      p            
      u            
      preCompInfo  
}
SourceFile: "WTauNafMultiplier.java"
InnerClasses:
  public F2m = org.bouncycastle.math.ec.ECCurve$F2m of org.bouncycastle.math.ec.ECCurve
  public F2m = org.bouncycastle.math.ec.ECPoint$F2m of org.bouncycastle.math.ec.ECPoint