| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| #ifndef _DECAF_SECURITY_SECURERANDOMSPI_H_ |
| #define _DECAF_SECURITY_SECURERANDOMSPI_H_ |
| |
| #include <decaf/util/Config.h> |
| |
| #include <decaf/security/SecuritySpi.h> |
| |
| namespace decaf { |
| namespace security { |
| |
| /** |
| * Interface class used by Security Service Providers to implement a source of secure random |
| * bytes. |
| * |
| * @since 1.0 |
| */ |
| class DECAF_API SecureRandomSpi : public SecuritySpi { |
| public: |
| |
| SecureRandomSpi(); |
| |
| virtual ~SecureRandomSpi(); |
| |
| /** |
| * Reseed the Random Number Generator, the value given supplements the previous seed value |
| * if any instead of replacing it. |
| * |
| * @param seed |
| * The array of bytes used to update the generators seed. |
| * @param size |
| * The size of the passed byte array. |
| */ |
| virtual void providerSetSeed( const unsigned char* seed, int size ) = 0; |
| |
| /** |
| * Generates the number of random bytes specified by the size parameter and write them to |
| * the passed bytes array. The array must have already been allocated and be of the correct |
| * size to prevent segmentation faults. |
| * |
| * @param bytes |
| * The array that will be filled with random bytes equal to size. |
| * @param numBytes |
| * The number of bytes to generate and write into the bytes array. |
| */ |
| virtual void providerNextBytes( unsigned char* bytes, int numBytes ) = 0; |
| |
| /** |
| * Generates a new set of seed bytes, the returned value may be used to seed another |
| * Random Number Generator. The caller owns the returned array and must delete it. |
| * |
| * @param numBytes |
| * The number of bytes that should be generated for the new seed array. |
| */ |
| virtual unsigned char* providerGenerateSeed( int numBytes ) = 0; |
| |
| }; |
| |
| }} |
| |
| #endif /* _DECAF_SECURITY_SECURERANDOMSPI_H_ */ |