/src/poco/Foundation/include/Poco/SHA2Engine.h
Line | Count | Source |
1 | | // |
2 | | // SHA2Engine.h |
3 | | // |
4 | | // Library: Foundation |
5 | | // Package: Crypt |
6 | | // Module: SHA2Engine |
7 | | // |
8 | | // Definition of class SHA2Engine. |
9 | | // |
10 | | // Secure Hash Standard SHA-2 algorithm |
11 | | // (FIPS 180-4, see http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf) |
12 | | // |
13 | | // Based on the implementation of mbed TLS (Apache 2.0) |
14 | | // http://www.apache.org/licenses/LICENSE-2.0 |
15 | | // |
16 | | // Copyright (c) 2017, Applied Informatics Software Engineering GmbH |
17 | | // and Contributors. |
18 | | // |
19 | | // SPDX-License-Identifier: BSL-1.0 |
20 | | // |
21 | | |
22 | | |
23 | | #ifndef Foundation_SHA2Engine_INCLUDED |
24 | | #define Foundation_SHA2Engine_INCLUDED |
25 | | |
26 | | |
27 | | #include "Poco/Foundation.h" |
28 | | #include "Poco/DigestEngine.h" |
29 | | |
30 | | |
31 | | namespace Poco { |
32 | | |
33 | | |
34 | | class Foundation_API SHA2Engine: public DigestEngine |
35 | | /// This class implements the SHA-2 message digest algorithm. |
36 | | /// (FIPS 180-4, see http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf) |
37 | | { |
38 | | public: |
39 | | enum ALGORITHM |
40 | | { |
41 | | SHA_224 = 1, |
42 | | SHA_256, |
43 | | SHA_384, |
44 | | SHA_512, |
45 | | SHA_512_224, |
46 | | SHA_512_256 |
47 | | }; |
48 | | |
49 | | SHA2Engine(ALGORITHM algorithm = SHA_256); |
50 | | ~SHA2Engine() override; |
51 | | |
52 | | std::size_t digestLength() const override; |
53 | | void reset() override; |
54 | | const DigestEngine::Digest& digest() override; |
55 | | |
56 | | protected: |
57 | | void updateImpl(const void *data, std::size_t length) override; |
58 | | |
59 | | private: |
60 | | void transform(); |
61 | | |
62 | | void* _context; |
63 | | ALGORITHM _algorithm; |
64 | | DigestEngine::Digest _digest; |
65 | | |
66 | | SHA2Engine(const SHA2Engine&); |
67 | | SHA2Engine& operator = (const SHA2Engine&); |
68 | | }; |
69 | | |
70 | | |
71 | | class Foundation_API SHA2Engine224 : public SHA2Engine |
72 | | { |
73 | | public: |
74 | | enum |
75 | | { |
76 | | BLOCK_SIZE = 64, |
77 | | DIGEST_SIZE = 28 |
78 | | }; |
79 | | |
80 | | SHA2Engine224(): Poco::SHA2Engine(Poco::SHA2Engine::ALGORITHM::SHA_224) |
81 | 0 | { |
82 | 0 | } |
83 | | |
84 | | ~SHA2Engine224() override = default; |
85 | | }; |
86 | | |
87 | | |
88 | | class Foundation_API SHA2Engine256 : public SHA2Engine |
89 | | { |
90 | | public: |
91 | | enum |
92 | | { |
93 | | BLOCK_SIZE = 64, |
94 | | DIGEST_SIZE = 32 |
95 | | }; |
96 | | |
97 | | SHA2Engine256(): Poco::SHA2Engine(Poco::SHA2Engine::ALGORITHM::SHA_256) |
98 | 0 | { |
99 | 0 | } |
100 | | |
101 | | ~SHA2Engine256() override = default; |
102 | | }; |
103 | | |
104 | | |
105 | | class Foundation_API SHA2Engine384 : public SHA2Engine |
106 | | { |
107 | | public: |
108 | | enum |
109 | | { |
110 | | BLOCK_SIZE = 128, |
111 | | DIGEST_SIZE = 48 |
112 | | }; |
113 | | |
114 | | SHA2Engine384(): Poco::SHA2Engine(Poco::SHA2Engine::ALGORITHM::SHA_384) |
115 | 0 | { |
116 | 0 | } |
117 | | |
118 | | ~SHA2Engine384() override = default; |
119 | | }; |
120 | | |
121 | | |
122 | | class Foundation_API SHA2Engine512 : public SHA2Engine |
123 | | { |
124 | | public: |
125 | | enum |
126 | | { |
127 | | BLOCK_SIZE = 128, |
128 | | DIGEST_SIZE = 64 |
129 | | }; |
130 | | |
131 | | SHA2Engine512(): Poco::SHA2Engine(Poco::SHA2Engine::ALGORITHM::SHA_512) |
132 | 0 | { |
133 | 0 | } |
134 | | |
135 | | ~SHA2Engine512() override = default; |
136 | | }; |
137 | | |
138 | | |
139 | | } // namespace Poco |
140 | | |
141 | | |
142 | | #endif // Foundation_SHA2Engine_INCLUDED |