/usr/include/Swiften/StringCodecs/SHA256.h is in libswiften-dev 2.0~beta1+dev47-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 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;
};
}
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