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