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, 259 deletions

diff --git a/cryptopp562/files.cpp b/cryptopp562/files.cpp
deleted file mode 100644
index 453b562..0000000
--- a/cryptopp562/files.cpp
+++ /dev/null
@@ -1,259 +0,0 @@
-// files.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-
-#include "files.h"
-
-#include <limits>
-
-NAMESPACE_BEGIN(CryptoPP)
-
-using namespace std;
-
-#ifndef NDEBUG
-void Files_TestInstantiations()
-{
-	FileStore f0;
-	FileSource f1;
-	FileSink f2;
-}
-#endif
-
-void FileStore::StoreInitialize(const NameValuePairs &parameters)
-{
-	m_waiting = false;
-	m_stream = NULL;
-	m_file.release();
-
-	const char *fileName = NULL;
-#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
-	const wchar_t *fileNameWide = NULL;
-	if (!parameters.GetValue(Name::InputFileNameWide(), fileNameWide))
-#endif
-		if (!parameters.GetValue(Name::InputFileName(), fileName))
-		{
-			parameters.GetValue(Name::InputStreamPointer(), m_stream);
-			return;
-		}
-
-	ios::openmode binary = parameters.GetValueWithDefault(Name::InputBinaryMode(), true) ? ios::binary : ios::openmode(0);
-	m_file.reset(new std::ifstream);
-#ifdef CRYPTOPP_UNIX_AVAILABLE
-	std::string narrowed;
-	if (fileNameWide)
-		fileName = (narrowed = StringNarrow(fileNameWide)).c_str();
-#endif
-#if _MSC_VER >= 1400
-	if (fileNameWide)
-	{
-		m_file->open(fileNameWide, ios::in | binary);
-		if (!*m_file)
-			throw OpenErr(StringNarrow(fileNameWide, false));
-	}
-#endif
-	if (fileName)
-	{
-		m_file->open(fileName, ios::in | binary);
-		if (!*m_file)
-			throw OpenErr(fileName);
-	}
-	m_stream = m_file.get();
-}
-
-lword FileStore::MaxRetrievable() const
-{
-	if (!m_stream)
-		return 0;
-
-	streampos current = m_stream->tellg();
-	streampos end = m_stream->seekg(0, ios::end).tellg();
-	m_stream->seekg(current);
-	return end-current;
-}
-
-size_t FileStore::TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel, bool blocking)
-{
-	if (!m_stream)
-	{
-		transferBytes = 0;
-		return 0;
-	}
-
-	lword size=transferBytes;
-	transferBytes = 0;
-
-	if (m_waiting)
-		goto output;
-
-	while (size && m_stream->good())
-	{
-		{
-		size_t spaceSize = 1024;
-		m_space = HelpCreatePutSpace(target, channel, 1, UnsignedMin(size_t(0)-1, size), spaceSize);
-
-		m_stream->read((char *)m_space, (unsigned int)STDMIN(size, (lword)spaceSize));
-		}
-		m_len = (size_t)m_stream->gcount();
-		size_t blockedBytes;
-output:
-		blockedBytes = target.ChannelPutModifiable2(channel, m_space, m_len, 0, blocking);
-		m_waiting = blockedBytes > 0;
-		if (m_waiting)
-			return blockedBytes;
-		size -= m_len;
-		transferBytes += m_len;
-	}
-
-	if (!m_stream->good() && !m_stream->eof())
-		throw ReadErr();
-
-	return 0;
-}
-
-size_t FileStore::CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end, const std::string &channel, bool blocking) const
-{
-	if (!m_stream)
-		return 0;
-
-	if (begin == 0 && end == 1)
-	{
-		int result = m_stream->peek();
-		if (result == char_traits<char>::eof())
-			return 0;
-		else
-		{
-			size_t blockedBytes = target.ChannelPut(channel, byte(result), blocking);
-			begin += 1-blockedBytes;
-			return blockedBytes;
-		}
-	}
-
-	// TODO: figure out what happens on cin
-	streampos current = m_stream->tellg();
-	streampos endPosition = m_stream->seekg(0, ios::end).tellg();
-	streampos newPosition = current + (streamoff)begin;
-
-	if (newPosition >= endPosition)
-	{
-		m_stream->seekg(current);
-		return 0;	// don't try to seek beyond the end of file
-	}
-	m_stream->seekg(newPosition);
-	try
-	{
-		assert(!m_waiting);
-		lword copyMax = end-begin;
-		size_t blockedBytes = const_cast<FileStore *>(this)->TransferTo2(target, copyMax, channel, blocking);
-		begin += copyMax;
-		if (blockedBytes)
-		{
-			const_cast<FileStore *>(this)->m_waiting = false;
-			return blockedBytes;
-		}
-	}
-	catch(...)
-	{
-		m_stream->clear();
-		m_stream->seekg(current);
-		throw;
-	}
-	m_stream->clear();
-	m_stream->seekg(current);
-
-	return 0;
-}
-
-lword FileStore::Skip(lword skipMax)
-{
-	if (!m_stream)
-		return 0;
-
-	lword oldPos = m_stream->tellg();
-	std::istream::off_type offset;
-	if (!SafeConvert(skipMax, offset))
-		throw InvalidArgument("FileStore: maximum seek offset exceeded");
-	m_stream->seekg(offset, ios::cur);
-	return (lword)m_stream->tellg() - oldPos;
-}
-
-void FileSink::IsolatedInitialize(const NameValuePairs &parameters)
-{
-	m_stream = NULL;
-	m_file.release();
-
-	const char *fileName = NULL;
-#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
-	const wchar_t *fileNameWide = NULL;
-	if (!parameters.GetValue(Name::OutputFileNameWide(), fileNameWide))
-#endif
-		if (!parameters.GetValue(Name::OutputFileName(), fileName))
-		{
-			parameters.GetValue(Name::OutputStreamPointer(), m_stream);
-			return;
-		}
-
-	ios::openmode binary = parameters.GetValueWithDefault(Name::OutputBinaryMode(), true) ? ios::binary : ios::openmode(0);
-	m_file.reset(new std::ofstream);
-#ifdef CRYPTOPP_UNIX_AVAILABLE
-	std::string narrowed;
-	if (fileNameWide)
-		fileName = (narrowed = StringNarrow(fileNameWide)).c_str();
-#endif
-#if _MSC_VER >= 1400
-	if (fileNameWide)
-	{
-		m_file->open(fileNameWide, ios::out | ios::trunc | binary);
-		if (!*m_file)
-			throw OpenErr(StringNarrow(fileNameWide, false));
-	}
-#endif
-	if (fileName)
-	{
-		m_file->open(fileName, ios::out | ios::trunc | binary);
-		if (!*m_file)
-			throw OpenErr(fileName);
-	}
-	m_stream = m_file.get();
-}
-
-bool FileSink::IsolatedFlush(bool hardFlush, bool blocking)
-{
-	if (!m_stream)
-		throw Err("FileSink: output stream not opened");
-
-	m_stream->flush();
-	if (!m_stream->good())
-		throw WriteErr();
-
-	return false;
-}
-
-size_t FileSink::Put2(const byte *inString, size_t length, int messageEnd, bool blocking)
-{
-	if (!m_stream)
-		throw Err("FileSink: output stream not opened");
-
-	while (length > 0)
-	{
-		std::streamsize size;
-		if (!SafeConvert(length, size))
-			size = numeric_limits<std::streamsize>::max();
-		m_stream->write((const char *)inString, size);
-		inString += size;
-		length -= (size_t)size;
-	}
-
-	if (messageEnd)
-		m_stream->flush();
-
-	if (!m_stream->good())
-		throw WriteErr();
-
-	return 0;
-}
-
-NAMESPACE_END
-
-#endif