1 files changed, 35 insertions, 0 deletions

diff --git a/twrpDigest/twrpDigest.hpp b/twrpDigest/twrpDigest.hpp
new file mode 100644
index 000000000..1803a280d
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+++ b/twrpDigest/twrpDigest.hpp
@@ -0,0 +1,35 @@
+/*
+        Copyright 2012 to 2017 TeamWin
+        This file is part of TWRP/TeamWin Recovery Project.
+
+        TWRP is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        TWRP is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with TWRP.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __TWRPDIGEST_H
+#define __TWRPDIGEST_H
+
+class twrpDigest {
+public:
+	twrpDigest() {};
+	virtual ~twrpDigest() {};
+	virtual void init() = 0;                                         // Initialize the digest according to the algorithm
+	virtual void update(const unsigned char* stream, size_t len) = 0;         // Update the digest with new data
+	virtual std::string return_digest_string() = 0;                  // Returns the digest of the file as a string.
+
+protected:
+	virtual void finalize() = 0;                                     // Finalize the digest input for creating the final digest
+	std::string hexify(uint8_t* hash, size_t len);                   // Take an len bytes and turn it into a hex string
+};
+
+#endif //__TWRPDIGEST_H