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| author | Remko Tronçon <git@el-tramo.be> | 2011-08-12 18:55:52 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2011-08-12 18:55:52 (GMT) |
| commit | 7917a635fb1cd67100391a0787942288481fc47b (patch) | |
| tree | 97f598b6b1bd65b2ea76c91cd050858701b8b6db /Swiften/StringCodecs/SHA256.h | |
| parent | c6ffcd27e94d2f90fd4a3bcb5d2d3c6550ead59c (diff) | |
| download | swift-7917a635fb1cd67100391a0787942288481fc47b.zip swift-7917a635fb1cd67100391a0787942288481fc47b.tar.bz2 | |
Added SHA256.
Diffstat (limited to 'Swiften/StringCodecs/SHA256.h')
| -rw-r--r-- | Swiften/StringCodecs/SHA256.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Swiften/StringCodecs/SHA256.h b/Swiften/StringCodecs/SHA256.h new file mode 100644 index 0000000..28a0e05 --- /dev/null +++ b/Swiften/StringCodecs/SHA256.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2010 Remko Tronçon + * Licensed under the GNU General Public License v3. + * See Documentation/Licenses/GPLv3.txt for more information. + */ + +#pragma once + +#include <vector> +#include <boost/cstdint.hpp> + +#include <Swiften/Base/ByteArray.h> +#include <Swiften/Base/SafeByteArray.h> + +namespace Swift { + class SHA256 { + public: + SHA256(); + + SHA256& update(const std::vector<unsigned char>& data); + std::vector<unsigned char> getHash() const; + + /** + * Equivalent of: + * SHA256().update(data),getHash(), but slightly more efficient and + * convenient. + */ + static ByteArray getHash(const ByteArray& data); + static ByteArray getHash(const SafeByteArray& data); + + ByteArray operator()(const SafeByteArray& data) { + return getHash(data); + } + + ByteArray operator()(const ByteArray& data) { + return getHash(data); + } + + private: + struct State { + boost::uint64_t length; + boost::uint32_t state[8], curlen; + unsigned char buf[64]; + }; + + static int init(State *md); + static int process(State * md, const unsigned char *in, unsigned int inlen); + static int compress(State *md, unsigned char *buf); + static int done(State * md, unsigned char *out); + + template<typename Container> static ByteArray getHashInternal(const Container& input); + + private: + State state; + }; +} |