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author | Mattes D <github@xoft.cz> | 2013-11-27 09:23:17 +0100 |
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committer | Mattes D <github@xoft.cz> | 2013-11-27 09:23:17 +0100 |
commit | 49760db89d94ede5d123d927141a6cd60dbaaf07 (patch) | |
tree | 6c6cf99e4cf3128311a93cd187947b502f3732a0 /lib/cryptopp/trunhash.h | |
parent | cWorld::SpawnExperienceOrb() now returns the entity ID of the spawned orb. (diff) | |
parent | Fixed VC2008 compilation, normalized include paths. (diff) | |
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Diffstat (limited to 'lib/cryptopp/trunhash.h')
-rw-r--r-- | lib/cryptopp/trunhash.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/cryptopp/trunhash.h b/lib/cryptopp/trunhash.h new file mode 100644 index 000000000..c1c4e9b64 --- /dev/null +++ b/lib/cryptopp/trunhash.h @@ -0,0 +1,48 @@ +#ifndef CRYPTOPP_TRUNHASH_H +#define CRYPTOPP_TRUNHASH_H + +#include "cryptlib.h" + +NAMESPACE_BEGIN(CryptoPP) + +class NullHash : public HashTransformation +{ +public: + void Update(const byte *input, size_t length) {} + unsigned int DigestSize() const {return 0;} + void TruncatedFinal(byte *digest, size_t digestSize) {} + bool TruncatedVerify(const byte *digest, size_t digestLength) {return true;} +}; + +//! construct new HashModule with smaller DigestSize() from existing one +template <class T> +class TruncatedHashTemplate : public HashTransformation +{ +public: + TruncatedHashTemplate(T hm, unsigned int digestSize) + : m_hm(hm), m_digestSize(digestSize) {} + TruncatedHashTemplate(const byte *key, size_t keyLength, unsigned int digestSize) + : m_hm(key, keyLength), m_digestSize(digestSize) {} + TruncatedHashTemplate(size_t digestSize) + : m_digestSize(digestSize) {} + + void Restart() + {m_hm.Restart();} + void Update(const byte *input, size_t length) + {m_hm.Update(input, length);} + unsigned int DigestSize() const {return m_digestSize;} + void TruncatedFinal(byte *digest, size_t digestSize) + {m_hm.TruncatedFinal(digest, digestSize);} + bool TruncatedVerify(const byte *digest, size_t digestLength) + {return m_hm.TruncatedVerify(digest, digestLength);} + +private: + T m_hm; + unsigned int m_digestSize; +}; + +typedef TruncatedHashTemplate<HashTransformation &> TruncatedHashModule; + +NAMESPACE_END + +#endif |