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, 63 deletions

diff --git a/cryptopp562/randpool.cpp b/cryptopp562/randpool.cpp
deleted file mode 100644
index a063c89..0000000
--- a/cryptopp562/randpool.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-// randpool.cpp - written and placed in the public domain by Wei Dai
-// RandomPool used to follow the design of randpool in PGP 2.6.x,
-// but as of version 5.5 it has been redesigned to reduce the risk
-// of reusing random numbers after state rollback (which may occur
-// when running in a virtual machine like VMware).
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-
-#include "randpool.h"
-#include "aes.h"
-#include "sha.h"
-#include "hrtimer.h"
-#include <time.h>
-
-NAMESPACE_BEGIN(CryptoPP)
-
-RandomPool::RandomPool()
-	: m_pCipher(new AES::Encryption), m_keySet(false)
-{
-	memset(m_key, 0, m_key.SizeInBytes());
-	memset(m_seed, 0, m_seed.SizeInBytes());
-}
-
-void RandomPool::IncorporateEntropy(const byte *input, size_t length)
-{
-	SHA256 hash;
-	hash.Update(m_key, 32);
-	hash.Update(input, length);
-	hash.Final(m_key);
-	m_keySet = false;
-}
-
-void RandomPool::GenerateIntoBufferedTransformation(BufferedTransformation &target, const std::string &channel, lword size)
-{
-	if (size > 0)
-	{
-		if (!m_keySet)
-			m_pCipher->SetKey(m_key, 32);
-
-		Timer timer;
-		TimerWord tw = timer.GetCurrentTimerValue();
-		CRYPTOPP_COMPILE_ASSERT(sizeof(tw) <= 16);
-		*(TimerWord *)m_seed.data() += tw;
-
-		time_t t = time(NULL);
-		CRYPTOPP_COMPILE_ASSERT(sizeof(t) <= 8);
-		*(time_t *)(m_seed.data()+8) += t;
-
-		do
-		{
-			m_pCipher->ProcessBlock(m_seed);
-			size_t len = UnsignedMin(16, size);
-			target.ChannelPut(channel, m_seed, len);
-			size -= len;
-		} while (size > 0);
-	}
-}
-
-NAMESPACE_END
-
-#endif