Re: AES/CTR IV custom increment

>
>  Hi,
>
>  thank you for pointing me.
>
>  I have tried it to implement it by a new template and new class
>  (inspired by modes.h):
>
>  class CTR_TPM_ModePolicy : public CTR_ModePolicy
>  {
>  protected:
>         virtual void IncrementCounterBy256() { IncrementCounterByOne
>  (m_counterArray, 3); }
>  };
>
>  CRYPTOPP_DLL_TEMPLATE_CLASS
>  AdditiveCipherTemplate<AbstractPolicyHolder<AdditiveCipherAbstractPolicy,
>  CTR_TPM_ModePolicy> >;
>
>  template <class CIPHER>
>  struct CTR_TPM_Mode : public CipherModeDocumentation
>  {
>         typedef CipherModeFinalTemplate_CipherHolder<CPP_TYPENAME
>  CIPHER::Encryption, ConcretePolicyHolder<Empty,
>  AdditiveCipherTemplate<AbstractPolicyHolder<AdditiveCipherAbstractPolicy,
>  CTR_TPM_ModePolicy> > > > Encryption;
>         typedef Encryption Decryption;
>  };
>
>  and then I tried to create proper variable:
>
>  CTR_TPM_Mode<AES>::Encryption aes(key.data, key.size, iv.data,
>  iv.size);
>
>  Unfortunately linker (VC++ 8.0 Express) returned few errors:
>
>  "public: virtual void __thiscall
>  CryptoPP::AdditiveCipherTemplate<class
>  CryptoPP::AbstractPolicyHolder<struct
>  CryptoPP::AdditiveCipherAbstractPolicy,class
>  CryptoPP::CTR_TPM_ModePolicy> >::Resynchronize(unsigned char const
>  *,int)"
>  "protected: virtual void __thiscall
>  CryptoPP::AdditiveCipherTemplate<class
>  CryptoPP::AbstractPolicyHolder<struct
>  CryptoPP::AdditiveCipherAbstractPolicy,class
>  CryptoPP::CTR_TPM_ModePolicy> >::UncheckedSetKey(unsigned char const
>  *,unsigned int,class CryptoPP::NameValuePairs const &)"
>  "public: virtual void __thiscall
>  CryptoPP::AdditiveCipherTemplate<class
>  CryptoPP::AbstractPolicyHolder<struct
>  CryptoPP::AdditiveCipherAbstractPolicy,class
>  CryptoPP::CTR_TPM_ModePolicy> >::ProcessData(unsigned char *,unsigned
>  char const *,unsigned int)"
>  "public: virtual void __thiscall
>  CryptoPP::AdditiveCipherTemplate<class
>  CryptoPP::AbstractPolicyHolder<struct
>  CryptoPP::AdditiveCipherAbstractPolicy,class
>  CryptoPP::CTR_TPM_ModePolicy> >::Seek(unsigned __int64)"
>  "public: virtual void __thiscall
>  CryptoPP::AdditiveCipherTemplate<class
>  CryptoPP::AbstractPolicyHolder<struct
>  CryptoPP::AdditiveCipherAbstractPolicy,class
>  CryptoPP::CTR_TPM_ModePolicy> >::GenerateBlock(unsigned char
>  *,unsigned int)"
>
>  Do you know what could be origin of them?
>
>  Best regards,
>  Jan
>
>  On Jun 16, 7:52 pm, "Wei Dai" <wei...@...> wrote:
>  > Hi, take a look at GCM_Base::GCTR in gcm.h. It does what you want, but is a
>  > protected member of GCM_Base, so just copy its code.
>  >
>  [SNIP]