3
* (C) 1999-2007 Jack Lloyd
6
* Botan is released under the Simplified BSD License (see license.txt)
9
#ifndef BOTAN_SECURE_QUEUE_H_
10
#define BOTAN_SECURE_QUEUE_H_
12
#include <botan/data_src.h>
13
#include <botan/filter.h>
18
* A queue that knows how to zeroize itself
20
class BOTAN_PUBLIC_API(2,0) SecureQueue final : public Fanout_Filter, public DataSource
23
std::string name() const override { return "Queue"; }
25
void write(const uint8_t[], size_t) override;
27
size_t read(uint8_t[], size_t) override;
28
size_t peek(uint8_t[], size_t, size_t = 0) const override;
29
size_t get_bytes_read() const override;
31
bool end_of_data() const override;
35
bool check_available(size_t n) override { return n <= size(); }
38
* @return number of bytes available in the queue
42
bool attachable() override { return false; }
45
* SecureQueue assignment
46
* @param other the queue to copy
48
SecureQueue& operator=(const SecureQueue& other);
51
* SecureQueue default constructor (creates empty queue)
56
* SecureQueue copy constructor
57
* @param other the queue to copy
59
SecureQueue(const SecureQueue& other);
61
~SecureQueue() { destroy(); }
66
class SecureQueueNode* m_head;
67
class SecureQueueNode* m_tail;