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.jce.ECPointUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jce.ECPointUtil
  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.jce.ECPointUtil this
         0: .line 13
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.jce.ECPointUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/ECPointUtil;

  public static java.security.spec.ECPoint decodePoint(java.security.spec.EllipticCurve, byte[]);
    descriptor: (Ljava/security/spec/EllipticCurve;[B)Ljava/security/spec/ECPoint;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=8, locals=4, args_size=2
        start local 0 // java.security.spec.EllipticCurve curve
        start local 1 // byte[] encoded
         0: .line 29
            aconst_null
            astore 2 /* c */
        start local 2 // org.bouncycastle.math.ec.ECCurve c
         1: .line 31
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getField:()Ljava/security/spec/ECField;
            instanceof java.security.spec.ECFieldFp
            ifeq 6
         2: .line 33
            new org.bouncycastle.math.ec.ECCurve$Fp
            dup
         3: .line 34
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getField:()Ljava/security/spec/ECField;
            checkcast java.security.spec.ECFieldFp
            invokevirtual java.security.spec.ECFieldFp.getP:()Ljava/math/BigInteger;
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getA:()Ljava/math/BigInteger;
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getB:()Ljava/math/BigInteger;
         4: .line 33
            invokespecial org.bouncycastle.math.ec.ECCurve$Fp.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;Ljava/math/BigInteger;)V
            astore 2 /* c */
         5: .line 35
            goto 15
         6: .line 38
      StackMap locals: org.bouncycastle.math.ec.ECCurve
      StackMap stack:
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getField:()Ljava/security/spec/ECField;
            checkcast java.security.spec.ECFieldF2m
            invokevirtual java.security.spec.ECFieldF2m.getMidTermsOfReductionPolynomial:()[I
            astore 3 /* k */
        start local 3 // int[] k
         7: .line 40
            aload 3 /* k */
            arraylength
            iconst_3
            if_icmpne 12
         8: .line 42
            new org.bouncycastle.math.ec.ECCurve$F2m
            dup
         9: .line 43
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getField:()Ljava/security/spec/ECField;
            checkcast java.security.spec.ECFieldF2m
            invokevirtual java.security.spec.ECFieldF2m.getM:()I
            aload 3 /* k */
            iconst_2
            iaload
            aload 3 /* k */
            iconst_1
            iaload
            aload 3 /* k */
            iconst_0
            iaload
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getA:()Ljava/math/BigInteger;
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getB:()Ljava/math/BigInteger;
        10: .line 42
            invokespecial org.bouncycastle.math.ec.ECCurve$F2m.<init>:(IIIILjava/math/BigInteger;Ljava/math/BigInteger;)V
            astore 2 /* c */
        11: .line 44
            goto 15
        12: .line 47
      StackMap locals: int[]
      StackMap stack:
            new org.bouncycastle.math.ec.ECCurve$F2m
            dup
        13: .line 48
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getField:()Ljava/security/spec/ECField;
            checkcast java.security.spec.ECFieldF2m
            invokevirtual java.security.spec.ECFieldF2m.getM:()I
            aload 3 /* k */
            iconst_0
            iaload
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getA:()Ljava/math/BigInteger;
            aload 0 /* curve */
            invokevirtual java.security.spec.EllipticCurve.getB:()Ljava/math/BigInteger;
        14: .line 47
            invokespecial org.bouncycastle.math.ec.ECCurve$F2m.<init>:(IILjava/math/BigInteger;Ljava/math/BigInteger;)V
            astore 2 /* c */
        end local 3 // int[] k
        15: .line 52
      StackMap locals:
      StackMap stack:
            aload 2 /* c */
            aload 1 /* encoded */
            invokevirtual org.bouncycastle.math.ec.ECCurve.decodePoint:([B)Lorg/bouncycastle/math/ec/ECPoint;
            astore 3 /* p */
        start local 3 // org.bouncycastle.math.ec.ECPoint p
        16: .line 54
            new java.security.spec.ECPoint
            dup
            aload 3 /* p */
            invokevirtual org.bouncycastle.math.ec.ECPoint.getX:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            aload 3 /* p */
            invokevirtual org.bouncycastle.math.ec.ECPoint.getY:()Lorg/bouncycastle/math/ec/ECFieldElement;
            invokevirtual org.bouncycastle.math.ec.ECFieldElement.toBigInteger:()Ljava/math/BigInteger;
            invokespecial java.security.spec.ECPoint.<init>:(Ljava/math/BigInteger;Ljava/math/BigInteger;)V
            areturn
        end local 3 // org.bouncycastle.math.ec.ECPoint p
        end local 2 // org.bouncycastle.math.ec.ECCurve c
        end local 1 // byte[] encoded
        end local 0 // java.security.spec.EllipticCurve curve
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   17     0    curve  Ljava/security/spec/EllipticCurve;
            0   17     1  encoded  [B
            1   17     2        c  Lorg/bouncycastle/math/ec/ECCurve;
            7   15     3        k  [I
           16   17     3        p  Lorg/bouncycastle/math/ec/ECPoint;
    MethodParameters:
         Name  Flags
      curve    
      encoded  
}
SourceFile: "ECPointUtil.java"
InnerClasses:
  public F2m = org.bouncycastle.math.ec.ECCurve$F2m of org.bouncycastle.math.ec.ECCurve
  public Fp = org.bouncycastle.math.ec.ECCurve$Fp of org.bouncycastle.math.ec.ECCurve