1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.conscrypt; 18 19 import java.math.BigInteger; 20 import java.security.spec.ECPoint; 21 22 final class OpenSSLECPointContext { 23 private final OpenSSLECGroupContext group; 24 private final NativeRef.EC_POINT pointCtx; 25 26 OpenSSLECPointContext(OpenSSLECGroupContext group, NativeRef.EC_POINT pointCtx) { 27 this.group = group; 28 this.pointCtx = pointCtx; 29 } 30 31 @Override 32 public boolean equals(Object o) { 33 throw new IllegalArgumentException("OpenSSLECPointContext.equals is not defined."); 34 } 35 36 public ECPoint getECPoint() { 37 final byte[][] generatorCoords = NativeCrypto.EC_POINT_get_affine_coordinates( 38 group.getNativeRef(), pointCtx); 39 final BigInteger x = new BigInteger(generatorCoords[0]); 40 final BigInteger y = new BigInteger(generatorCoords[1]); 41 return new ECPoint(x, y); 42 } 43 44 @Override 45 public int hashCode() { 46 // TODO Auto-generated method stub 47 return super.hashCode(); 48 } 49 50 public NativeRef.EC_POINT getNativeRef() { 51 return pointCtx; 52 } 53 54 public static OpenSSLECPointContext getInstance(int curveType, OpenSSLECGroupContext group, 55 ECPoint javaPoint) { 56 OpenSSLECPointContext point = new OpenSSLECPointContext(group, new NativeRef.EC_POINT( 57 NativeCrypto.EC_POINT_new(group.getNativeRef()))); 58 NativeCrypto.EC_POINT_set_affine_coordinates(group.getNativeRef(), 59 point.getNativeRef(), javaPoint.getAffineX().toByteArray(), 60 javaPoint.getAffineY().toByteArray()); 61 return point; 62 } 63 } 64
