1 /*
2 * SM3
3 * (C) 2017 Ribose Inc.
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_SM3_H_
9 #define BOTAN_SM3_H_
10 
11 #include <botan/mdx_hash.h>
12 
13 BOTAN_FUTURE_INTERNAL_HEADER(sm3.h)
14 
15 namespace Botan {
16 
17 enum {
18   SM3_BLOCK_BYTES = 64,
19   SM3_DIGEST_BYTES = 32
20 };
21 
22 /**
23 * SM3
24 */
25 class BOTAN_PUBLIC_API(2,2) SM3 final : public MDx_HashFunction
26    {
27    public:
name()28       std::string name() const override { return "SM3"; }
output_length()29       size_t output_length() const override { return SM3_DIGEST_BYTES; }
clone()30       HashFunction* clone() const override { return new SM3; }
31       std::unique_ptr<HashFunction> copy_state() const override;
32 
33       void clear() override;
34 
SM3()35       SM3() : MDx_HashFunction(SM3_BLOCK_BYTES, true, true), m_digest(SM3_DIGEST_BYTES)
36          { clear(); }
37    private:
38       void compress_n(const uint8_t[], size_t blocks) override;
39       void copy_out(uint8_t[]) override;
40 
41       /**
42       * The digest value
43       */
44       secure_vector<uint32_t> m_digest;
45    };
46 
47 }
48 
49 #endif
50