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52 lines
1.5 KiB
52 lines
1.5 KiB
/*
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* Copyright 2014-2016 the libsecp256k1 contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.bitcoin;
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/**
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* This class holds the context reference used in native methods
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* to handle ECDSA operations.
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*/
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public class Secp256k1Context {
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private static final boolean enabled; //true if the library is loaded
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private static final long context; //ref to pointer to context obj
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static { //static initializer
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boolean isEnabled = true;
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long contextRef = -1;
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try {
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System.loadLibrary("secp256k1");
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contextRef = secp256k1_init_context();
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} catch (UnsatisfiedLinkError e) {
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System.out.println("UnsatisfiedLinkError: " + e.toString());
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isEnabled = false;
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}
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enabled = isEnabled;
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context = contextRef;
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}
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public static boolean isEnabled() {
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return enabled;
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}
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public static long getContext() {
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if(!enabled) return -1; //sanity check
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return context;
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}
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private static native long secp256k1_init_context();
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}
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