Revert AltiVec and Power8 commits

The strategy of "cleanup under-aligned buffers" is not scaling well. Corner cases are still turing up. The library has some corner-case breaks, like old 32-bit Intels. And it still has not solved the AltiVec and Power8 alignment problems.
For now we are backing out the changes and investigating other strategies

1 files changed, 4 insertions, 3 deletions

diff --git a/strciphr.h b/strciphr.h
index bc105a27..10082907 100644
--- a/strciphr.h
+++ b/strciphr.h
@@ -187,12 +187,13 @@ struct CRYPTOPP_NO_VTABLE AdditiveCipherConcretePolicy : public BASE
 	typedef WT WordType;

 	CRYPTOPP_CONSTANT(BYTES_PER_ITERATION = sizeof(WordType) * W)

 

+#if !(CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X64)

 	//! \brief Provides data alignment requirements

 	//! \returns data alignment requirements, in bytes

 	//! \details Internally, the default implementation returns 1. If the stream cipher is implemented

-	//!   using an SSE2 ASM or intrinsics, then the value returned is usually 16. If the cipher is

-	//!   AES on AltiVec or Power 8 then 16 is returned.

+	//!   using an SSE2 ASM or intrinsics, then the value returned is usually 16.

 	unsigned int GetAlignment() const {return GetAlignmentOf<WordType>();}

+#endif

 

 	//! \brief Provides number of bytes operated upon during an iteration

 	//! \returns bytes operated upon during an iteration, in bytes

@@ -339,7 +340,7 @@ protected:
 	inline byte * KeystreamBufferBegin() {return this->m_buffer.data();}

 	inline byte * KeystreamBufferEnd() {return (this->m_buffer.data() + this->m_buffer.size());}

 

-	AlignedSecByteBlock m_buffer;

+	SecByteBlock m_buffer;

 	size_t m_leftOver;

 };