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 abstract class org.bouncycastle.asn1.ua.DSTU4145PointEncoder
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.bouncycastle.asn1.ua.DSTU4145PointEncoder
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.ua.DSTU4145PointEncoder this
         0: .line 15
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.asn1.ua.DSTU4145PointEncoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/ua/DSTU4145PointEncoder;

  private static org.bouncycastle.math.ec.ECFieldElement trace(org.bouncycastle.math.ec.ECFieldElement);
    descriptor: (Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // org.bouncycastle.math.ec.ECFieldElement fe
         0: .line 19
            aload 0 /* fe */
            astore 1 /* t */
        start local 1 // org.bouncycastle.math.ec.ECFieldElement t
         1: .line 20
            iconst_1
            istore 2 /* i */
        start local 2 // int i
         2: goto 5
         3: .line 22
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement int
      StackMap stack:
            aload 1 /* t */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.square:()Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 0 /* fe */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 1 /* t */
         4: .line 20
            iinc 2 /* i */ 1
      StackMap locals:
      StackMap stack:
         5: iload 2 /* i */
            aload 0 /* fe */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.getFieldSize:()I
            if_icmplt 3
        end local 2 // int i
         6: .line 24
            aload 1 /* t */
            areturn
        end local 1 // org.bouncycastle.math.ec.ECFieldElement t
        end local 0 // org.bouncycastle.math.ec.ECFieldElement fe
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0    fe  Lorg/bouncycastle/math/ec/ECFieldElement;
            1    7     1     t  Lorg/bouncycastle/math/ec/ECFieldElement;
            2    6     2     i  I
    MethodParameters:
      Name  Flags
      fe    

  private static org.bouncycastle.math.ec.ECFieldElement solveQuadraticEquation(org.bouncycastle.math.ec.ECCurve, org.bouncycastle.math.ec.ECFieldElement);
    descriptor: (Lorg/bouncycastle/math/ec/ECCurve;Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=11, args_size=2
        start local 0 // org.bouncycastle.math.ec.ECCurve curve
        start local 1 // org.bouncycastle.math.ec.ECFieldElement beta
         0: .line 37
            aload 1 /* beta */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isZero:()Z
            ifeq 2
         1: .line 39
            aload 1 /* beta */
            areturn
         2: .line 42
      StackMap locals:
      StackMap stack:
            aload 0 /* curve */
            getstatic org.bouncycastle.math.ec.ECConstants.ZERO:Ljava/math/BigInteger;
            invokevirtual org.bouncycastle.math.ec.ECCurve.fromBigInteger:(Ljava/math/BigInteger;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 2 /* zeroElement */
        start local 2 // org.bouncycastle.math.ec.ECFieldElement zeroElement
         3: .line 44
            aconst_null
            astore 3 /* z */
        start local 3 // org.bouncycastle.math.ec.ECFieldElement z
         4: .line 45
            aconst_null
            astore 4 /* gamma */
        start local 4 // org.bouncycastle.math.ec.ECFieldElement gamma
         5: .line 47
            new java.util.Random
            dup
            invokespecial java.util.Random.<init>:()V
            astore 5 /* rand */
        start local 5 // java.util.Random rand
         6: .line 48
            aload 1 /* beta */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.getFieldSize:()I
            istore 6 /* m */
        start local 6 // int m
         7: .line 51
      StackMap locals: org.bouncycastle.math.ec.ECCurve org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement java.util.Random int
      StackMap stack:
            aload 0 /* curve */
            new java.math.BigInteger
            dup
            iload 6 /* m */
            aload 5 /* rand */
            invokespecial java.math.BigInteger.<init>:(ILjava/util/Random;)V
            invokevirtual org.bouncycastle.math.ec.ECCurve.fromBigInteger:(Ljava/math/BigInteger;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 7 /* t */
        start local 7 // org.bouncycastle.math.ec.ECFieldElement t
         8: .line 52
            aload 2 /* zeroElement */
            astore 3 /* z */
         9: .line 53
            aload 1 /* beta */
            astore 8 /* w */
        start local 8 // org.bouncycastle.math.ec.ECFieldElement w
        10: .line 54
            iconst_1
            istore 9 /* i */
        start local 9 // int i
        11: goto 16
        12: .line 56
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement int
      StackMap stack:
            aload 8 /* w */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.square:()Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 10 /* w2 */
        start local 10 // org.bouncycastle.math.ec.ECFieldElement w2
        13: .line 57
            aload 3 /* z */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.square:()Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 10 /* w2 */
            aload 7 /* t */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.multiply:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 3 /* z */
        14: .line 58
            aload 10 /* w2 */
            aload 1 /* beta */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 8 /* w */
        end local 10 // org.bouncycastle.math.ec.ECFieldElement w2
        15: .line 54
            iinc 9 /* i */ 1
      StackMap locals:
      StackMap stack:
        16: iload 9 /* i */
            iload 6 /* m */
            iconst_1
            isub
            if_icmple 12
        end local 9 // int i
        17: .line 60
            aload 8 /* w */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isZero:()Z
            ifne 19
        18: .line 62
            aconst_null
            areturn
        19: .line 64
      StackMap locals:
      StackMap stack:
            aload 3 /* z */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.square:()Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 3 /* z */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 4 /* gamma */
        end local 8 // org.bouncycastle.math.ec.ECFieldElement w
        end local 7 // org.bouncycastle.math.ec.ECFieldElement t
        20: .line 66
            aload 4 /* gamma */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isZero:()Z
            ifne 7
        21: .line 68
            aload 3 /* z */
            areturn
        end local 6 // int m
        end local 5 // java.util.Random rand
        end local 4 // org.bouncycastle.math.ec.ECFieldElement gamma
        end local 3 // org.bouncycastle.math.ec.ECFieldElement z
        end local 2 // org.bouncycastle.math.ec.ECFieldElement zeroElement
        end local 1 // org.bouncycastle.math.ec.ECFieldElement beta
        end local 0 // org.bouncycastle.math.ec.ECCurve curve
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   22     0        curve  Lorg/bouncycastle/math/ec/ECCurve;
            0   22     1         beta  Lorg/bouncycastle/math/ec/ECFieldElement;
            3   22     2  zeroElement  Lorg/bouncycastle/math/ec/ECFieldElement;
            4   22     3            z  Lorg/bouncycastle/math/ec/ECFieldElement;
            5   22     4        gamma  Lorg/bouncycastle/math/ec/ECFieldElement;
            6   22     5         rand  Ljava/util/Random;
            7   22     6            m  I
            8   20     7            t  Lorg/bouncycastle/math/ec/ECFieldElement;
           10   20     8            w  Lorg/bouncycastle/math/ec/ECFieldElement;
           11   17     9            i  I
           13   15    10           w2  Lorg/bouncycastle/math/ec/ECFieldElement;
    MethodParameters:
       Name  Flags
      curve  
      beta   

  public static byte[] encodePoint(org.bouncycastle.math.ec.ECPoint);
    descriptor: (Lorg/bouncycastle/math/ec/ECPoint;)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=4, args_size=1
        start local 0 // org.bouncycastle.math.ec.ECPoint Q
         0: .line 85
            aload 0 /* Q */
            invokevirtual org.bouncycastle.math.ec.ECPoint.normalize:()Lorg/bouncycastle/math/ec/ECPoint;
            astore 0 /* Q */
         1: .line 87
            aload 0 /* Q */
            invokevirtual org.bouncycastle.math.ec.ECPoint.getAffineXCoord:()Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 1 /* x */
        start local 1 // org.bouncycastle.math.ec.ECFieldElement x
         2: .line 89
            aload 1 /* x */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.getEncoded:()[B
            astore 2 /* bytes */
        start local 2 // byte[] bytes
         3: .line 91
            aload 1 /* x */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isZero:()Z
            ifne 9
         4: .line 93
            aload 0 /* Q */
            invokevirtual org.bouncycastle.math.ec.ECPoint.getAffineYCoord:()Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 1 /* x */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.divide:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 3 /* z */
        start local 3 // org.bouncycastle.math.ec.ECFieldElement z
         5: .line 94
            aload 3 /* z */
            invokestatic org.bouncycastle.asn1.ua.DSTU4145PointEncoder.trace:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isOne:()Z
            ifeq 8
         6: .line 96
            aload 2 /* bytes */
            aload 2 /* bytes */
            arraylength
            iconst_1
            isub
            dup2
            baload
            iconst_1
            ior
            i2b
            bastore
         7: .line 97
            goto 9
         8: .line 100
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement byte[] org.bouncycastle.math.ec.ECFieldElement
      StackMap stack:
            aload 2 /* bytes */
            aload 2 /* bytes */
            arraylength
            iconst_1
            isub
            dup2
            baload
            sipush 254
            iand
            i2b
            bastore
        end local 3 // org.bouncycastle.math.ec.ECFieldElement z
         9: .line 104
      StackMap locals:
      StackMap stack:
            aload 2 /* bytes */
            areturn
        end local 2 // byte[] bytes
        end local 1 // org.bouncycastle.math.ec.ECFieldElement x
        end local 0 // org.bouncycastle.math.ec.ECPoint Q
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   10     0      Q  Lorg/bouncycastle/math/ec/ECPoint;
            2   10     1      x  Lorg/bouncycastle/math/ec/ECFieldElement;
            3   10     2  bytes  [B
            5    9     3      z  Lorg/bouncycastle/math/ec/ECFieldElement;
    MethodParameters:
      Name  Flags
      Q     

  public static org.bouncycastle.math.ec.ECPoint decodePoint(org.bouncycastle.math.ec.ECCurve, byte[]);
    descriptor: (Lorg/bouncycastle/math/ec/ECCurve;[B)Lorg/bouncycastle/math/ec/ECPoint;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=7, args_size=2
        start local 0 // org.bouncycastle.math.ec.ECCurve curve
        start local 1 // byte[] bytes
         0: .line 120
            aload 0 /* curve */
            aload 1 /* bytes */
            aload 1 /* bytes */
            arraylength
            iconst_1
            isub
            baload
            iconst_1
            iand
            i2l
            invokestatic java.math.BigInteger.valueOf:(J)Ljava/math/BigInteger;
            invokevirtual org.bouncycastle.math.ec.ECCurve.fromBigInteger:(Ljava/math/BigInteger;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 2 /* k */
        start local 2 // org.bouncycastle.math.ec.ECFieldElement k
         1: .line 122
            aload 0 /* curve */
            new java.math.BigInteger
            dup
            iconst_1
            aload 1 /* bytes */
            invokespecial java.math.BigInteger.<init>:(I[B)V
            invokevirtual org.bouncycastle.math.ec.ECCurve.fromBigInteger:(Ljava/math/BigInteger;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 3 /* xp */
        start local 3 // org.bouncycastle.math.ec.ECFieldElement xp
         2: .line 123
            aload 3 /* xp */
            invokestatic org.bouncycastle.asn1.ua.DSTU4145PointEncoder.trace:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 0 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve.getA:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifne 4
         3: .line 125
            aload 3 /* xp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.addOne:()Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 3 /* xp */
         4: .line 128
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement
      StackMap stack:
            aconst_null
            astore 4 /* yp */
        start local 4 // org.bouncycastle.math.ec.ECFieldElement yp
         5: .line 129
            aload 3 /* xp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.isZero:()Z
            ifeq 8
         6: .line 131
            aload 0 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve.getB:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.sqrt:()Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 4 /* yp */
         7: .line 132
            goto 14
         8: .line 135
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement
      StackMap stack:
            aload 3 /* xp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.square:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.invert:()Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 0 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve.getB:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.multiply:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 0 /* curve */
            invokevirtual org.bouncycastle.math.ec.ECCurve.getA:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 3 /* xp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.add:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 5 /* beta */
        start local 5 // org.bouncycastle.math.ec.ECFieldElement beta
         9: .line 136
            aload 0 /* curve */
            aload 5 /* beta */
            invokestatic org.bouncycastle.asn1.ua.DSTU4145PointEncoder.solveQuadraticEquation:(Lorg/bouncycastle/math/ec/ECCurve;Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 6 /* z */
        start local 6 // org.bouncycastle.math.ec.ECFieldElement z
        10: .line 137
            aload 6 /* z */
            ifnull 14
        11: .line 139
            aload 6 /* z */
            invokestatic org.bouncycastle.asn1.ua.DSTU4145PointEncoder.trace:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            aload 2 /* k */
            invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
            ifne 13
        12: .line 141
            aload 6 /* z */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.addOne:()Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 6 /* z */
        13: .line 143
      StackMap locals: org.bouncycastle.math.ec.ECFieldElement org.bouncycastle.math.ec.ECFieldElement
      StackMap stack:
            aload 3 /* xp */
            aload 6 /* z */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.multiply:(Lorg/bouncycastle/math/ec/ECFieldElement;)Lorg/bouncycastle/math/ec/ECFieldElement;
            astore 4 /* yp */
        end local 6 // org.bouncycastle.math.ec.ECFieldElement z
        end local 5 // org.bouncycastle.math.ec.ECFieldElement beta
        14: .line 147
      StackMap locals:
      StackMap stack:
            aload 4 /* yp */
            ifnonnull 16
        15: .line 149
            new java.lang.IllegalArgumentException
            dup
            ldc "Invalid point compression"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        16: .line 152
      StackMap locals:
      StackMap stack:
            aload 0 /* curve */
            aload 3 /* xp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            aload 4 /* yp */
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            invokevirtual org.bouncycastle.math.ec.ECCurve.validatePoint:(Ljava/math/BigInteger;Ljava/math/BigInteger;)Lorg/bouncycastle/math/ec/ECPoint;
            areturn
        end local 4 // org.bouncycastle.math.ec.ECFieldElement yp
        end local 3 // org.bouncycastle.math.ec.ECFieldElement xp
        end local 2 // org.bouncycastle.math.ec.ECFieldElement k
        end local 1 // byte[] bytes
        end local 0 // org.bouncycastle.math.ec.ECCurve curve
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   17     0  curve  Lorg/bouncycastle/math/ec/ECCurve;
            0   17     1  bytes  [B
            1   17     2      k  Lorg/bouncycastle/math/ec/ECFieldElement;
            2   17     3     xp  Lorg/bouncycastle/math/ec/ECFieldElement;
            5   17     4     yp  Lorg/bouncycastle/math/ec/ECFieldElement;
            9   14     5   beta  Lorg/bouncycastle/math/ec/ECFieldElement;
           10   14     6      z  Lorg/bouncycastle/math/ec/ECFieldElement;
    MethodParameters:
       Name  Flags
      curve  
      bytes  
}
SourceFile: "DSTU4145PointEncoder.java"