1 files changed, 34 insertions, 0 deletions
diff --git a/external/crypto++-5.6.3/adler32.h b/external/crypto++-5.6.3/adler32.h
new file mode 100644
index 0000000..e538b5a
--- /dev/null
+++ b/external/crypto++-5.6.3/adler32.h
@@ -0,0 +1,34 @@
+// adler32.h - written and placed in the public domain by Wei Dai
+
+//! \file
+//! \headerfile 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;}
+    static 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