Merge branch 'mbedtls'

Replace Crypto++ 5.6.2 with Mbed TLS 3.6.0

Newer compilers are starting to show the age of the crypto library we've
been using, as it is sometimes a pain to recompile compass lately.  So,
the tracked version of Crypto++ was at least due for an upgrade.

However, I plan to soon begin reimplementing compass in C.  So, I'm
taking this opportunity to first just migrate the cryptography library
to a newer C alternative.  This branch does so, and integrates its use
into the current C++ version of compass.

* mbedtls:
  Remove unnecessary exception handler catch block
  Refactor random password generation to use mbedtls entropy source
  Refactor SHA256 function to use mbedtls
  Refactor AES functions to use mbedtls
  Add Mbedtls library
  Remove Crypto++ library

1 files changed, 0 insertions, 72 deletions

diff --git a/cryptopp562/mdc.h b/cryptopp562/mdc.h
deleted file mode 100644
index cc90cdc..0000000
--- a/cryptopp562/mdc.h
+++ /dev/null
@@ -1,72 +0,0 @@
- // mdc.h - written and placed in the public domain by Wei Dai
-
-#ifndef CRYPTOPP_MDC_H
-#define CRYPTOPP_MDC_H
-
-/** \file
-*/
-
-#include "seckey.h"
-#include "misc.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-//! _
-template <class T>
-struct MDC_Info : public FixedBlockSize<T::DIGESTSIZE>, public FixedKeyLength<T::BLOCKSIZE>
-{
-	static std::string StaticAlgorithmName() {return std::string("MDC/")+T::StaticAlgorithmName();}
-};
-
-//! <a href="http://www.weidai.com/scan-mirror/cs.html#MDC">MDC</a>
-/*! a construction by Peter Gutmann to turn an iterated hash function into a PRF */
-template <class T>
-class MDC : public MDC_Info<T>
-{
-	class CRYPTOPP_NO_VTABLE Enc : public BlockCipherImpl<MDC_Info<T> >
-	{
-		typedef typename T::HashWordType HashWordType;
-
-	public:
-		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params)
-		{
-			this->AssertValidKeyLength(length);
-			memcpy_s(m_key, m_key.size(), userKey, this->KEYLENGTH);
-			T::CorrectEndianess(Key(), Key(), this->KEYLENGTH);
-		}
-
-		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-		{
-			T::CorrectEndianess(Buffer(), (HashWordType *)inBlock, this->BLOCKSIZE);
-			T::Transform(Buffer(), Key());
-			if (xorBlock)
-			{
-				T::CorrectEndianess(Buffer(), Buffer(), this->BLOCKSIZE);
-				xorbuf(outBlock, xorBlock, m_buffer, this->BLOCKSIZE);
-			}
-			else
-				T::CorrectEndianess((HashWordType *)outBlock, Buffer(), this->BLOCKSIZE);
-		}
-
-		bool IsPermutation() const {return false;}
-
-		unsigned int OptimalDataAlignment() const {return sizeof(HashWordType);}
-
-	private:
-		HashWordType *Key() {return (HashWordType *)m_key.data();}
-		const HashWordType *Key() const {return (const HashWordType *)m_key.data();}
-		HashWordType *Buffer() const {return (HashWordType *)m_buffer.data();}
-
-		// VC60 workaround: bug triggered if using FixedSizeAllocatorWithCleanup
-		FixedSizeSecBlock<byte, MDC_Info<T>::KEYLENGTH, AllocatorWithCleanup<byte> > m_key;
-		mutable FixedSizeSecBlock<byte, MDC_Info<T>::BLOCKSIZE, AllocatorWithCleanup<byte> > m_buffer;
-	};
-
-public:
-	//! use BlockCipher interface
-	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
-};
-
-NAMESPACE_END
-
-#endif