First Commit

externals/cryptopp/adler32.h

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+// adler32.h - originally written and placed in the public domain by Wei Dai
+
+/// \file adler32.h
+/// \brief Class file for ADLER-32 checksum calculations
+
+#ifndef CRYPTOPP_ADLER32_H
+#define CRYPTOPP_ADLER32_H
+
+#include "cryptlib.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// ADLER-32 checksum calculations
+class Adler32 : public HashTransformation
+{
+public:
+	CRYPTOPP_CONSTANT(DIGESTSIZE = 4);
+	Adler32() {Reset();}
+	void Update(const byte *input, size_t length);
+	void TruncatedFinal(byte *hash, size_t size);
+	unsigned int DigestSize() const {return DIGESTSIZE;}
+    CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "Adler32";}
+    std::string AlgorithmName() const {return StaticAlgorithmName();}
+
+private:
+	void Reset() {m_s1 = 1; m_s2 = 0;}
+
+	word16 m_s1, m_s2;
+};
+
+NAMESPACE_END
+
+#endif