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| author | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2012-08-30 23:06:13 +0200 |
|---|---|---|
| committer | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2012-08-30 23:06:13 +0200 |
| commit | 539364846a89987ac2679988653f50332cb91d26 (patch) | |
| tree | f1695473c1f493a19c5fbdb70f7f1faccf99d7f3 /CryptoPP/cmac.h | |
| parent | Updated to V6 - "Stop" and "Progress report" functionality (diff) | |
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Diffstat (limited to 'CryptoPP/cmac.h')
| -rw-r--r-- | CryptoPP/cmac.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/CryptoPP/cmac.h b/CryptoPP/cmac.h new file mode 100644 index 000000000..ab3ecf8cc --- /dev/null +++ b/CryptoPP/cmac.h @@ -0,0 +1,52 @@ +#ifndef CRYPTOPP_CMAC_H
+#define CRYPTOPP_CMAC_H
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! _
+class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE CMAC_Base : public MessageAuthenticationCode
+{
+public:
+ CMAC_Base() {}
+
+ void UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs ¶ms);
+ void Update(const byte *input, size_t length);
+ void TruncatedFinal(byte *mac, size_t size);
+ unsigned int DigestSize() const {return GetCipher().BlockSize();}
+ unsigned int OptimalBlockSize() const {return GetCipher().BlockSize();}
+ unsigned int OptimalDataAlignment() const {return GetCipher().OptimalDataAlignment();}
+
+protected:
+ friend class EAX_Base;
+
+ const BlockCipher & GetCipher() const {return const_cast<CMAC_Base*>(this)->AccessCipher();}
+ virtual BlockCipher & AccessCipher() =0;
+
+ void ProcessBuf();
+ SecByteBlock m_reg;
+ unsigned int m_counter;
+};
+
+/// <a href="http://www.cryptolounge.org/wiki/CMAC">CMAC</a>
+/*! Template parameter T should be a class derived from BlockCipherDocumentation, for example AES, with a block size of 8, 16, or 32 */
+template <class T>
+class CMAC : public MessageAuthenticationCodeImpl<CMAC_Base, CMAC<T> >, public SameKeyLengthAs<T>
+{
+public:
+ CMAC() {}
+ CMAC(const byte *key, size_t length=SameKeyLengthAs<T>::DEFAULT_KEYLENGTH)
+ {this->SetKey(key, length);}
+
+ static std::string StaticAlgorithmName() {return std::string("CMAC(") + T::StaticAlgorithmName() + ")";}
+
+private:
+ BlockCipher & AccessCipher() {return m_cipher;}
+ typename T::Encryption m_cipher;
+};
+
+NAMESPACE_END
+
+#endif
|