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43 lines
1.0 KiB
C++
43 lines
1.0 KiB
C++
// nonce.h
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/* Copyright 2009 10gen Inc.
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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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#pragma once
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namespace mongo {
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typedef unsigned long long nonce;
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struct Security {
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Security();
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nonce getNonce();
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/** safe during global var initialization */
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nonce getNonceInitSafe() {
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init();
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return getNonce();
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}
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private:
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ifstream *_devrandom;
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static bool _initialized;
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void init(); // can call more than once
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};
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extern Security security;
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} // namespace mongo
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