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, 140 deletions

diff --git a/cryptopp562/ccm.cpp b/cryptopp562/ccm.cpp
deleted file mode 100644
index 0368787..0000000
--- a/cryptopp562/ccm.cpp
+++ /dev/null
@@ -1,140 +0,0 @@
-// ccm.cpp - written and placed in the public domain by Wei Dai

-

-#include "pch.h"

-

-#ifndef CRYPTOPP_IMPORTS

-

-#include "ccm.h"

-

-NAMESPACE_BEGIN(CryptoPP)

-

-void CCM_Base::SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs &params)

-{

-	BlockCipher &blockCipher = AccessBlockCipher();

-

-	blockCipher.SetKey(userKey, keylength, params);

-

-	if (blockCipher.BlockSize() != REQUIRED_BLOCKSIZE)

-		throw InvalidArgument(AlgorithmName() + ": block size of underlying block cipher is not 16");

-

-	m_digestSize = params.GetIntValueWithDefault(Name::DigestSize(), DefaultDigestSize());

-	if (m_digestSize % 2 > 0 || m_digestSize < 4 || m_digestSize > 16)

-		throw InvalidArgument(AlgorithmName() + ": DigestSize must be 4, 6, 8, 10, 12, 14, or 16");

-

-	m_buffer.Grow(2*REQUIRED_BLOCKSIZE);

-	m_L = 8;

-}

-

-void CCM_Base::Resync(const byte *iv, size_t len)

-{

-	BlockCipher &cipher = AccessBlockCipher();

-

-	m_L = REQUIRED_BLOCKSIZE-1-(int)len;

-	assert(m_L >= 2);

-	if (m_L > 8)

-		m_L = 8;

-

-	m_buffer[0] = byte(m_L-1);	// flag

-	memcpy(m_buffer+1, iv, len);

-	memset(m_buffer+1+len, 0, REQUIRED_BLOCKSIZE-1-len);

-

-	if (m_state >= State_IVSet)

-		m_ctr.Resynchronize(m_buffer, REQUIRED_BLOCKSIZE);

-	else

-		m_ctr.SetCipherWithIV(cipher, m_buffer);

-

-	m_ctr.Seek(REQUIRED_BLOCKSIZE);

-	m_aadLength = 0; 

-	m_messageLength = 0;

-}

-

-void CCM_Base::UncheckedSpecifyDataLengths(lword headerLength, lword messageLength, lword footerLength)

-{

-	if (m_state != State_IVSet)

-		throw BadState(AlgorithmName(), "SpecifyDataLengths", "or after State_IVSet");

-

-	m_aadLength = headerLength; 

-	m_messageLength = messageLength;

-

-	byte *cbcBuffer = CBC_Buffer();

-	const BlockCipher &cipher = GetBlockCipher();

-

-	cbcBuffer[0] = byte(64*(headerLength>0) + 8*((m_digestSize-2)/2) + (m_L-1));	// flag

-	PutWord<word64>(true, BIG_ENDIAN_ORDER, cbcBuffer+REQUIRED_BLOCKSIZE-8, m_messageLength);

-	memcpy(cbcBuffer+1, m_buffer+1, REQUIRED_BLOCKSIZE-1-m_L);

-	cipher.ProcessBlock(cbcBuffer);

-

-	if (headerLength>0)

-	{

-		assert(m_bufferedDataLength == 0);

-

-		if (headerLength < ((1<<16) - (1<<8)))

-		{

-			PutWord<word16>(true, BIG_ENDIAN_ORDER, m_buffer, (word16)headerLength);

-			m_bufferedDataLength = 2;

-		}

-		else if (headerLength < (W64LIT(1)<<32))

-		{

-			m_buffer[0] = 0xff;

-			m_buffer[1] = 0xfe;

-			PutWord<word32>(false, BIG_ENDIAN_ORDER, m_buffer+2, (word32)headerLength);

-			m_bufferedDataLength = 6;

-		}

-		else

-		{

-			m_buffer[0] = 0xff;

-			m_buffer[1] = 0xff;

-			PutWord<word64>(false, BIG_ENDIAN_ORDER, m_buffer+2, headerLength);

-			m_bufferedDataLength = 10;

-		}

-	}

-}

-

-size_t CCM_Base::AuthenticateBlocks(const byte *data, size_t len)

-{

-	byte *cbcBuffer = CBC_Buffer();

-	const BlockCipher &cipher = GetBlockCipher();

-	return cipher.AdvancedProcessBlocks(cbcBuffer, data, cbcBuffer, len, BlockTransformation::BT_DontIncrementInOutPointers|BlockTransformation::BT_XorInput);

-}

-

-void CCM_Base::AuthenticateLastHeaderBlock()

-{

-	byte *cbcBuffer = CBC_Buffer();

-	const BlockCipher &cipher = GetBlockCipher();

-

-	if (m_aadLength != m_totalHeaderLength)

-		throw InvalidArgument(AlgorithmName() + ": header length doesn't match that given in SpecifyDataLengths");

-

-	if (m_bufferedDataLength > 0)

-	{

-		xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength);

-		cipher.ProcessBlock(cbcBuffer);

-		m_bufferedDataLength = 0;

-	}

-}

-

-void CCM_Base::AuthenticateLastConfidentialBlock()

-{

-	byte *cbcBuffer = CBC_Buffer();

-	const BlockCipher &cipher = GetBlockCipher();

-

-	if (m_messageLength != m_totalMessageLength)

-		throw InvalidArgument(AlgorithmName() + ": message length doesn't match that given in SpecifyDataLengths");

-

-	if (m_bufferedDataLength > 0)

-	{

-		xorbuf(cbcBuffer, m_buffer, m_bufferedDataLength);

-		cipher.ProcessBlock(cbcBuffer);

-		m_bufferedDataLength = 0;

-	}

-}

-

-void CCM_Base::AuthenticateLastFooterBlock(byte *mac, size_t macSize)

-{

-	m_ctr.Seek(0);

-	m_ctr.ProcessData(mac, CBC_Buffer(), macSize);

-}

-

-NAMESPACE_END

-

-#endif