Files
mtgodot-poc/third_party/cryptopp/hc256.h
T
shenleiandClaude Opus 5.5 a46093104c layout: restructure into src/ tests/ android/ scripts/ tools/
- extension/src/{port,platform,codepage} -> src/; native_render -> src/host
  (+ dxt, shaders/); libgr2 -> src/gr2; extension/third_party -> third_party
- extension/tests -> tests/port, libgr2/tests -> tests/gr2
- android-native -> android (build.sh, push-client.sh moved in)
- script -> scripts; tools/40250 -> tools/server; oracle -> tools/granny-oracle;
  perf tools -> tools/perf
- all build trees under build/ (native, release, android, port-gate)
- xrender:: CMake aliases -> mt::; port-map ledger impl paths rewritten

No code changes. ctest 15/15, port_gate macos+android PASS, port_map check 0 errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 19:08:19 +09:00

68 lines
2.3 KiB
C++

// hc256.h - written and placed in the public domain by Jeffrey Walton
// based on public domain code by Hongjun Wu.
//
// The reference materials and source files are available at
// The eSTREAM Project, http://www.ecrypt.eu.org/stream/hc256.html.
/// \file hc256.h
/// \brief Classes for HC-256 stream cipher
/// \sa <A HREF="http://www.ecrypt.eu.org/stream/hc256.html">The
/// eSTREAM Project | HC-256</A> and
/// <A HREF="https://www.cryptopp.com/wiki/HC-128">Crypto++ Wiki | HC-128</A>.
/// \since Crypto++ 8.0
#ifndef CRYPTOPP_HC256_H
#define CRYPTOPP_HC256_H
#include "strciphr.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
/// \brief HC-256 stream cipher information
/// \since Crypto++ 8.0
struct HC256Info : public FixedKeyLength<32, SimpleKeyingInterface::UNIQUE_IV, 32>
{
CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() { return "HC-256"; }
};
/// \brief HC-256 stream cipher implementation
/// \since Crypto++ 8.0
class HC256Policy : public AdditiveCipherConcretePolicy<word32, 4>, public HC256Info
{
protected:
void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
void CipherResynchronize(byte *keystreamBuffer, const byte *iv, size_t length);
bool CanOperateKeystream() const { return true; }
bool CipherIsRandomAccess() const { return false; }
word32 H1(word32 u);
word32 H2(word32 u);
word32 Generate();
private:
FixedSizeSecBlock<word32, 8> m_key;
FixedSizeSecBlock<word32, 8> m_iv;
word32 m_P[1024];
word32 m_Q[1024];
word32 m_ctr;
};
/// \brief HC-256 stream cipher
/// \details HC-256 is a stream cipher developed by Hongjun Wu. HC-256 is the
/// successor to HC-128 from the eSTREAM project.
/// \sa <A HREF="http://www.ecrypt.eu.org/stream/hc256.html">The
/// eSTREAM Project | HC-256</A> and
/// <A HREF="https://www.cryptopp.com/wiki/HC-128">Crypto++ Wiki | HC-128</A>.
/// \since Crypto++ 8.0
struct HC256 : public HC256Info, public SymmetricCipherDocumentation
{
typedef SymmetricCipherFinal<ConcretePolicyHolder<HC256Policy, AdditiveCipherTemplate<> >, HC256Info> Encryption;
typedef Encryption Decryption;
};
NAMESPACE_END
#endif // CRYPTOPP_HC256_H