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-rw-r--r--src/lib/hash/checksum/adler32/adler32.h37
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diff --git a/src/lib/hash/checksum/adler32/adler32.h b/src/lib/hash/checksum/adler32/adler32.h
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+++ b/src/lib/hash/checksum/adler32/adler32.h
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+/*
+* Adler32
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ADLER32_H__
+#define BOTAN_ADLER32_H__
+
+#include <botan/hash.h>
+
+namespace Botan {
+
+/**
+* The Adler32 checksum, used in zlib
+*/
+class BOTAN_DLL Adler32 : public HashFunction
+ {
+ public:
+ std::string name() const { return "Adler32"; }
+ size_t output_length() const { return 4; }
+ HashFunction* clone() const { return new Adler32; }
+
+ void clear() { S1 = 1; S2 = 0; }
+
+ Adler32() { clear(); }
+ ~Adler32() { clear(); }
+ private:
+ void add_data(const byte[], size_t);
+ void final_result(byte[]);
+ u16bit S1, S2;
+ };
+
+}
+
+#endif