From caf9e032e6b4ccb114a74a3936c916bcfaba262d Mon Sep 17 00:00:00 2001 From: weidai Date: Mon, 2 Mar 2009 02:39:17 +0000 Subject: changes for 5.6: - added AuthenticatedSymmetricCipher interface class and Filter wrappers - added CCM, GCM (with SSE2 assembly), CMAC, and SEED - improved AES speed on x86 and x64 - removed WORD64_AVAILABLE; compiler 64-bit int support is now required git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@433 57ff6487-cd31-0410-9ec3-f628ee90f5f0 --- authenc.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 authenc.h (limited to 'authenc.h') diff --git a/authenc.h b/authenc.h new file mode 100644 index 0000000..afc2791 --- /dev/null +++ b/authenc.h @@ -0,0 +1,49 @@ +#ifndef CRYPTOPP_AUTHENC_H +#define CRYPTOPP_AUTHENC_H + +#include "cryptlib.h" +#include "secblock.h" + +NAMESPACE_BEGIN(CryptoPP) + +//! . +class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE AuthenticatedSymmetricCipherBase : public AuthenticatedSymmetricCipher +{ +public: + AuthenticatedSymmetricCipherBase() : m_state(State_Start) {} + + bool IsRandomAccess() const {return false;} + bool IsSelfInverting() const {return true;} + void UncheckedSetKey(const byte *,unsigned int,const CryptoPP::NameValuePairs &) {assert(false);} + + void SetKey(const byte *userKey, size_t keylength, const NameValuePairs ¶ms); + void Restart() {if (m_state > State_KeySet) m_state = State_KeySet;} + void Resynchronize(const byte *iv, int length=-1); + void Update(const byte *input, size_t length); + void ProcessData(byte *outString, const byte *inString, size_t length); + void TruncatedFinal(byte *mac, size_t macSize); + +protected: + void AuthenticateData(const byte *data, size_t len); + const SymmetricCipher & GetSymmetricCipher() const {return const_cast(this)->AccessSymmetricCipher();}; + + virtual SymmetricCipher & AccessSymmetricCipher() =0; + virtual bool AuthenticationIsOnPlaintext() const =0; + virtual unsigned int AuthenticationBlockSize() const =0; + virtual void SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs ¶ms) =0; + virtual void Resync(const byte *iv, size_t len) =0; + virtual size_t AuthenticateBlocks(const byte *data, size_t len) =0; + virtual void AuthenticateLastHeaderBlock() =0; + virtual void AuthenticateLastConfidentialBlock() =0; + virtual void AuthenticateLastFooterBlock(byte *mac, size_t macSize) =0; + + enum State {State_Start, State_KeySet, State_IVSet, State_AuthUntransformed, State_AuthTransformed, State_AuthFooter}; + State m_state; + unsigned int m_bufferedDataLength; + lword m_totalHeaderLength, m_totalMessageLength, m_totalFooterLength; + AlignedSecByteBlock m_buffer; +}; + +NAMESPACE_END + +#endif -- cgit v1.2.1