1 files changed, 52 insertions, 0 deletions

diff --git a/src/PolarSSL++/Sha1Checksum.h b/src/PolarSSL++/Sha1Checksum.h
new file mode 100644
index 000000000..68fdbcf1b
--- /dev/null
+++ b/src/PolarSSL++/Sha1Checksum.h
@@ -0,0 +1,52 @@
+
+// Sha1Checksum.h
+
+// Declares the cSha1Checksum class representing the SHA-1 checksum calculator
+
+
+
+
+
+#pragma once
+
+#include "polarssl/sha1.h"
+
+
+
+
+
+/** Calculates a SHA1 checksum for data stream */
+class cSha1Checksum
+{
+public:
+	typedef Byte Checksum[20];  // The type used for storing the checksum
+	
+	cSha1Checksum(void);
+	
+	/** Adds the specified data to the checksum */
+	void Update(const Byte * a_Data, size_t a_Length);
+	
+	/** Calculates and returns the final checksum */
+	void Finalize(Checksum & a_Output);
+	
+	/** Returns true if the object is accepts more input data, false if Finalize()-d (need to Restart()) */
+	bool DoesAcceptInput(void) const { return m_DoesAcceptInput; }
+	
+	/** Converts a raw 160-bit SHA1 digest into a Java Hex representation
+	According to http://wiki.vg/wiki/index.php?title=Protocol_Encryption&oldid=2802
+	*/
+	static void DigestToJava(const Checksum & a_Digest, AString & a_JavaOut);
+	
+	/** Clears the current context and start a new checksum calculation */
+	void Restart(void);
+	
+protected:
+	/** True if the object is accepts more input data, false if Finalize()-d (need to Restart()) */
+	bool m_DoesAcceptInput;
+	
+	sha1_context m_Sha1;
+} ;
+
+
+
+