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authorlloyd <[email protected]>2014-01-10 03:41:59 +0000
committerlloyd <[email protected]>2014-01-10 03:41:59 +0000
commit6894dca64c04936d07048c0e8cbf7e25858548c3 (patch)
tree5d572bfde9fe667dab14e3f04b5285a85d8acd95 /src/lib/mac/cmac/cmac.h
parent9efa3be92442afb3d0b69890a36c7f122df18eda (diff)
Move lib into src
Diffstat (limited to 'src/lib/mac/cmac/cmac.h')
-rw-r--r--src/lib/mac/cmac/cmac.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/mac/cmac/cmac.h b/src/lib/mac/cmac/cmac.h
new file mode 100644
index 000000000..c1b75cfa5
--- /dev/null
+++ b/src/lib/mac/cmac/cmac.h
@@ -0,0 +1,63 @@
+/*
+* CMAC
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_CMAC_H__
+#define BOTAN_CMAC_H__
+
+#include <botan/mac.h>
+#include <botan/block_cipher.h>
+
+namespace Botan {
+
+/**
+* CMAC, also known as OMAC1
+*/
+class BOTAN_DLL CMAC : public MessageAuthenticationCode
+ {
+ public:
+ std::string name() const;
+ size_t output_length() const { return e->block_size(); }
+ MessageAuthenticationCode* clone() const;
+
+ void clear();
+
+ Key_Length_Specification key_spec() const
+ {
+ return e->key_spec();
+ }
+
+ /**
+ * CMAC's polynomial doubling operation
+ * @param in the input
+ * @param polynomial the byte value of the polynomial
+ */
+ static secure_vector<byte> poly_double(const secure_vector<byte>& in,
+ byte polynomial);
+
+ /**
+ * @param cipher the underlying block cipher to use
+ */
+ CMAC(BlockCipher* cipher);
+
+ CMAC(const CMAC&) = delete;
+ CMAC& operator=(const CMAC&) = delete;
+
+ ~CMAC();
+ private:
+ void add_data(const byte[], size_t);
+ void final_result(byte[]);
+ void key_schedule(const byte[], size_t);
+
+ BlockCipher* e;
+ secure_vector<byte> buffer, state, B, P;
+ size_t position;
+ byte polynomial;
+ };
+
+}
+
+#endif