Botan  2.13.0
Crypto and TLS for C++11
crc32.h
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1 /*
2 * CRC32
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_CRC32_H_
9 #define BOTAN_CRC32_H_
10 
11 #include <botan/hash.h>
12 
14 
15 namespace Botan {
16 
17 /**
18 * 32-bit cyclic redundancy check
19 */
21  {
22  public:
23  std::string name() const override { return "CRC32"; }
24  size_t output_length() const override { return 4; }
25  HashFunction* clone() const override { return new CRC32; }
26  std::unique_ptr<HashFunction> copy_state() const override;
27 
28  void clear() override { m_crc = 0xFFFFFFFF; }
29 
30  CRC32() { clear(); }
31  ~CRC32() { clear(); }
32  private:
33  void add_data(const uint8_t[], size_t) override;
34  void final_result(uint8_t[]) override;
35  uint32_t m_crc;
36  };
37 
38 }
39 
40 #endif
void clear() override
Definition: crc32.h:28
int(* final)(unsigned char *, CTX *)
size_t output_length() const override
Definition: crc32.h:24
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
~CRC32()
Definition: crc32.h:31
std::string name() const override
Definition: crc32.h:23
Definition: alg_id.cpp:13
HashFunction * clone() const override
Definition: crc32.h:25
virtual void clear()=0
virtual std::unique_ptr< HashFunction > copy_state() const =0
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:139