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, 141 deletions

diff --git a/cryptopp562/mqv.h b/cryptopp562/mqv.h
deleted file mode 100644
index 2683817..0000000
--- a/cryptopp562/mqv.h
+++ /dev/null
@@ -1,141 +0,0 @@
-#ifndef CRYPTOPP_MQV_H
-#define CRYPTOPP_MQV_H
-
-/** \file
-*/
-
-#include "gfpcrypt.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-//! _
-template <class GROUP_PARAMETERS, class COFACTOR_OPTION = CPP_TYPENAME GROUP_PARAMETERS::DefaultCofactorOption>
-class MQV_Domain : public AuthenticatedKeyAgreementDomain
-{
-public:
-	typedef GROUP_PARAMETERS GroupParameters;
-	typedef typename GroupParameters::Element Element;
-	typedef MQV_Domain<GROUP_PARAMETERS, COFACTOR_OPTION> Domain;
-
-	MQV_Domain() {}
-
-	MQV_Domain(const GroupParameters &params)
-		: m_groupParameters(params) {}
-
-	MQV_Domain(BufferedTransformation &bt)
-		{m_groupParameters.BERDecode(bt);}
-
-	template <class T1, class T2>
-	MQV_Domain(T1 v1, T2 v2)
-		{m_groupParameters.Initialize(v1, v2);}
-	
-	template <class T1, class T2, class T3>
-	MQV_Domain(T1 v1, T2 v2, T3 v3)
-		{m_groupParameters.Initialize(v1, v2, v3);}
-	
-	template <class T1, class T2, class T3, class T4>
-	MQV_Domain(T1 v1, T2 v2, T3 v3, T4 v4)
-		{m_groupParameters.Initialize(v1, v2, v3, v4);}
-
-	const GroupParameters & GetGroupParameters() const {return m_groupParameters;}
-	GroupParameters & AccessGroupParameters() {return m_groupParameters;}
-
-	CryptoParameters & AccessCryptoParameters() {return AccessAbstractGroupParameters();}
-
-	unsigned int AgreedValueLength() const {return GetAbstractGroupParameters().GetEncodedElementSize(false);}
-	unsigned int StaticPrivateKeyLength() const {return GetAbstractGroupParameters().GetSubgroupOrder().ByteCount();}
-	unsigned int StaticPublicKeyLength() const {return GetAbstractGroupParameters().GetEncodedElementSize(true);}
-
-	void GenerateStaticPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
-	{
-		Integer x(rng, Integer::One(), GetAbstractGroupParameters().GetMaxExponent());
-		x.Encode(privateKey, StaticPrivateKeyLength());
-	}
-
-	void GenerateStaticPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
-	{
-		const DL_GroupParameters<Element> &params = GetAbstractGroupParameters();
-		Integer x(privateKey, StaticPrivateKeyLength());
-		Element y = params.ExponentiateBase(x);
-		params.EncodeElement(true, y, publicKey);
-	}
-
-	unsigned int EphemeralPrivateKeyLength() const {return StaticPrivateKeyLength() + StaticPublicKeyLength();}
-	unsigned int EphemeralPublicKeyLength() const {return StaticPublicKeyLength();}
-
-	void GenerateEphemeralPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
-	{
-		const DL_GroupParameters<Element> &params = GetAbstractGroupParameters();
-		Integer x(rng, Integer::One(), params.GetMaxExponent());
-		x.Encode(privateKey, StaticPrivateKeyLength());
-		Element y = params.ExponentiateBase(x);
-		params.EncodeElement(true, y, privateKey+StaticPrivateKeyLength());
-	}
-
-	void GenerateEphemeralPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
-	{
-		memcpy(publicKey, privateKey+StaticPrivateKeyLength(), EphemeralPublicKeyLength());
-	}
-
-	bool Agree(byte *agreedValue,
-		const byte *staticPrivateKey, const byte *ephemeralPrivateKey, 
-		const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
-		bool validateStaticOtherPublicKey=true) const
-	{
-		try
-		{
-			const DL_GroupParameters<Element> &params = GetAbstractGroupParameters();
-			Element WW = params.DecodeElement(staticOtherPublicKey, validateStaticOtherPublicKey);
-			Element VV = params.DecodeElement(ephemeralOtherPublicKey, true);
-
-			Integer s(staticPrivateKey, StaticPrivateKeyLength());
-			Integer u(ephemeralPrivateKey, StaticPrivateKeyLength());
-			Element V = params.DecodeElement(ephemeralPrivateKey+StaticPrivateKeyLength(), false);
-
-			const Integer &r = params.GetSubgroupOrder();
-			Integer h2 = Integer::Power2((r.BitCount()+1)/2);
-			Integer e = ((h2+params.ConvertElementToInteger(V)%h2)*s+u) % r;
-			Integer tt = h2 + params.ConvertElementToInteger(VV) % h2;
-
-			if (COFACTOR_OPTION::ToEnum() == NO_COFACTOR_MULTIPLICTION)
-			{
-				Element P = params.ExponentiateElement(WW, tt);
-				P = m_groupParameters.MultiplyElements(P, VV);
-				Element R[2];
-				const Integer e2[2] = {r, e};
-				params.SimultaneousExponentiate(R, P, e2, 2);
-				if (!params.IsIdentity(R[0]) || params.IsIdentity(R[1]))
-					return false;
-				params.EncodeElement(false, R[1], agreedValue);
-			}
-			else
-			{
-				const Integer &k = params.GetCofactor();
-				if (COFACTOR_OPTION::ToEnum() == COMPATIBLE_COFACTOR_MULTIPLICTION)
-					e = ModularArithmetic(r).Divide(e, k);
-				Element P = m_groupParameters.CascadeExponentiate(VV, k*e, WW, k*(e*tt%r));
-				if (params.IsIdentity(P))
-					return false;
-				params.EncodeElement(false, P, agreedValue);
-			}
-		}
-		catch (DL_BadElement &)
-		{
-			return false;
-		}
-		return true;
-	}
-
-private:
-	DL_GroupParameters<Element> & AccessAbstractGroupParameters() {return m_groupParameters;}
-	const DL_GroupParameters<Element> & GetAbstractGroupParameters() const {return m_groupParameters;}
-
-	GroupParameters m_groupParameters;
-};
-
-//! Menezes-Qu-Vanstone in GF(p) with key validation, AKA <a href="http://www.weidai.com/scan-mirror/ka.html#MQV">MQV</a>
-typedef MQV_Domain<DL_GroupParameters_GFP_DefaultSafePrime> MQV;
-
-NAMESPACE_END
-
-#endif