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, 136 deletions

diff --git a/cryptopp562/shark.cpp b/cryptopp562/shark.cpp
deleted file mode 100644
index 361147e..0000000
--- a/cryptopp562/shark.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-// shark.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-#include "shark.h"
-#include "misc.h"
-#include "modes.h"
-#include "gf256.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-static word64 SHARKTransform(word64 a)
-{
-	static const byte iG[8][8] = {
-		0xe7, 0x30, 0x90, 0x85, 0xd0, 0x4b, 0x91, 0x41, 
-		0x53, 0x95, 0x9b, 0xa5, 0x96, 0xbc, 0xa1, 0x68, 
-		0x02, 0x45, 0xf7, 0x65, 0x5c, 0x1f, 0xb6, 0x52, 
-		0xa2, 0xca, 0x22, 0x94, 0x44, 0x63, 0x2a, 0xa2, 
-		0xfc, 0x67, 0x8e, 0x10, 0x29, 0x75, 0x85, 0x71, 
-		0x24, 0x45, 0xa2, 0xcf, 0x2f, 0x22, 0xc1, 0x0e, 
-		0xa1, 0xf1, 0x71, 0x40, 0x91, 0x27, 0x18, 0xa5, 
-		0x56, 0xf4, 0xaf, 0x32, 0xd2, 0xa4, 0xdc, 0x71, 
-	};
-
-	word64 result=0;
-	GF256 gf256(0xf5);
-	for (unsigned int i=0; i<8; i++)
-		for(unsigned int j=0; j<8; j++) 
-			result ^= word64(gf256.Multiply(iG[i][j], GF256::Element(a>>(56-8*j)))) << (56-8*i);
-	return result;
-}
-
-void SHARK::Base::UncheckedSetKey(const byte *key, unsigned int keyLen, const NameValuePairs &params)
-{
-	AssertValidKeyLength(keyLen);
-
-	m_rounds = GetRoundsAndThrowIfInvalid(params, this);
-	m_roundKeys.New(m_rounds+1);
-
-	// concatenate key enought times to fill a
-	for (unsigned int i=0; i<(m_rounds+1)*8; i++)
-		((byte *)m_roundKeys.begin())[i] = key[i%keyLen];
-
-	SHARK::Encryption e;
-	e.InitForKeySetup();
-	byte IV[8] = {0,0,0,0,0,0,0,0};
-	CFB_Mode_ExternalCipher::Encryption cfb(e, IV);
-
-	cfb.ProcessString((byte *)m_roundKeys.begin(), (m_rounds+1)*8);
-
-	ConditionalByteReverse(BIG_ENDIAN_ORDER, m_roundKeys.begin(), m_roundKeys.begin(), (m_rounds+1)*8);
-
-	m_roundKeys[m_rounds] = SHARKTransform(m_roundKeys[m_rounds]);
-
-	if (!IsForwardTransformation())
-	{
-		unsigned int i;
-
-		// transform encryption round keys into decryption round keys
-		for (i=0; i<m_rounds/2; i++)
-			std::swap(m_roundKeys[i], m_roundKeys[m_rounds-i]);
-
-		for (i=1; i<m_rounds; i++)
-			m_roundKeys[i] = SHARKTransform(m_roundKeys[i]);
-	}
-
-#ifdef IS_LITTLE_ENDIAN
-	m_roundKeys[0] = ByteReverse(m_roundKeys[0]);
-	m_roundKeys[m_rounds] = ByteReverse(m_roundKeys[m_rounds]);
-#endif
-}
-
-// construct an SHARK_Enc object with fixed round keys, to be used to initialize actual round keys
-void SHARK::Enc::InitForKeySetup()
-{
-	m_rounds = DEFAULT_ROUNDS;
-	m_roundKeys.New(DEFAULT_ROUNDS+1);
-
-	for (unsigned int i=0; i<DEFAULT_ROUNDS; i++)
-		m_roundKeys[i] = cbox[0][i];
-
-	m_roundKeys[DEFAULT_ROUNDS] = SHARKTransform(cbox[0][DEFAULT_ROUNDS]);
-
-#ifdef IS_LITTLE_ENDIAN
-	m_roundKeys[0] = ByteReverse(m_roundKeys[0]);
-	m_roundKeys[m_rounds] = ByteReverse(m_roundKeys[m_rounds]);
-#endif
-}
-
-typedef word64 ArrayOf256Word64s[256];
-
-template <const byte *sbox, const ArrayOf256Word64s *cbox>
-struct SharkProcessAndXorBlock{		// VC60 workaround: problem with template functions
-inline SharkProcessAndXorBlock(const word64 *roundKeys, unsigned int rounds, const byte *inBlock, const byte *xorBlock, byte *outBlock)
-{
-	word64 tmp = *(word64 *)inBlock ^ roundKeys[0];
-
-	ByteOrder order = GetNativeByteOrder();
-	tmp = cbox[0][GetByte(order, tmp, 0)] ^ cbox[1][GetByte(order, tmp, 1)] 
-		^ cbox[2][GetByte(order, tmp, 2)] ^ cbox[3][GetByte(order, tmp, 3)] 
-		^ cbox[4][GetByte(order, tmp, 4)] ^ cbox[5][GetByte(order, tmp, 5)] 
-		^ cbox[6][GetByte(order, tmp, 6)] ^ cbox[7][GetByte(order, tmp, 7)]
-		^ roundKeys[1];
-
-	for(unsigned int i=2; i<rounds; i++) 
-	{
-		tmp = cbox[0][GETBYTE(tmp, 7)] ^ cbox[1][GETBYTE(tmp, 6)] 
-			^ cbox[2][GETBYTE(tmp, 5)] ^ cbox[3][GETBYTE(tmp, 4)] 
-			^ cbox[4][GETBYTE(tmp, 3)] ^ cbox[5][GETBYTE(tmp, 2)] 
-			^ cbox[6][GETBYTE(tmp, 1)] ^ cbox[7][GETBYTE(tmp, 0)]
-			^ roundKeys[i];
-	}
-
-	PutBlock<byte, BigEndian>(xorBlock, outBlock)
-		(sbox[GETBYTE(tmp, 7)])
-		(sbox[GETBYTE(tmp, 6)])
-		(sbox[GETBYTE(tmp, 5)])
-		(sbox[GETBYTE(tmp, 4)])
-		(sbox[GETBYTE(tmp, 3)])
-		(sbox[GETBYTE(tmp, 2)])
-		(sbox[GETBYTE(tmp, 1)])
-		(sbox[GETBYTE(tmp, 0)]);
-
-	*(word64 *)outBlock ^= roundKeys[rounds];
-}};
-
-void SHARK::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-{
-	SharkProcessAndXorBlock<sbox, cbox>(m_roundKeys, m_rounds, inBlock, xorBlock, outBlock);
-}
-
-void SHARK::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-{
-	SharkProcessAndXorBlock<sbox, cbox>(m_roundKeys, m_rounds, inBlock, xorBlock, outBlock);
-}
-
-NAMESPACE_END