1 /*
2 * SHA-160
3 * (C) 1999-2007,2016 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_SHA_160_H_
9 #define BOTAN_SHA_160_H_
10 
11 #include <botan/mdx_hash.h>
12 
13 BOTAN_FUTURE_INTERNAL_HEADER(sha160.h)
14 
15 namespace Botan {
16 
17 /**
18 * NIST's SHA-160
19 */
20 class BOTAN_PUBLIC_API(2,0) SHA_160 final : public MDx_HashFunction
21    {
22    public:
name()23       std::string name() const override { return "SHA-160"; }
output_length()24       size_t output_length() const override { return 20; }
clone()25       HashFunction* clone() const override { return new SHA_160; }
26       std::unique_ptr<HashFunction> copy_state() const override;
27 
28       void clear() override;
29 
SHA_160()30       SHA_160() : MDx_HashFunction(64, true, true), m_digest(5)
31          {
32          clear();
33          }
34 
35    private:
36       void compress_n(const uint8_t[], size_t blocks) override;
37 
38 #if defined(BOTAN_HAS_SHA1_ARMV8)
39       static void sha1_armv8_compress_n(secure_vector<uint32_t>& digest,
40                                         const uint8_t blocks[],
41                                         size_t block_count);
42 #endif
43 
44 #if defined(BOTAN_HAS_SHA1_SSE2)
45       static void sse2_compress_n(secure_vector<uint32_t>& digest,
46                                   const uint8_t blocks[],
47                                   size_t block_count);
48 #endif
49 
50 #if defined(BOTAN_HAS_SHA1_X86_SHA_NI)
51       // Using x86 SHA instructions in Intel Goldmont and Cannonlake
52       static void sha1_compress_x86(secure_vector<uint32_t>& digest,
53                                     const uint8_t blocks[],
54                                     size_t block_count);
55 #endif
56 
57 
58       void copy_out(uint8_t[]) override;
59 
60       /**
61       * The digest value
62       */
63       secure_vector<uint32_t> m_digest;
64 
65       /**
66       * The message buffer
67       */
68       secure_vector<uint32_t> m_W;
69    };
70 
71 typedef SHA_160 SHA_1;
72 
73 }
74 
75 #endif
76