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, 99 deletions

diff --git a/cryptopp562/blowfish.cpp b/cryptopp562/blowfish.cpp
deleted file mode 100644
index aaa637c..0000000
--- a/cryptopp562/blowfish.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-// blowfish.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-#include "blowfish.h"
-#include "misc.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-void Blowfish::Base::UncheckedSetKey(const byte *key_string, unsigned int keylength, const NameValuePairs &)
-{
-	AssertValidKeyLength(keylength);
-
-	unsigned i, j=0, k;
-	word32 data, dspace[2] = {0, 0};
-
-	memcpy(pbox, p_init, sizeof(p_init));
-	memcpy(sbox, s_init, sizeof(s_init));
-
-	// Xor key string into encryption key vector
-	for (i=0 ; i<ROUNDS+2 ; ++i)
-	{
-		data = 0 ;
-		for (k=0 ; k<4 ; ++k )
-			data = (data << 8) | key_string[j++ % keylength];
-		pbox[i] ^= data;
-	}
-
-	crypt_block(dspace, pbox);
-
-	for (i=0; i<ROUNDS; i+=2)
-		crypt_block(pbox+i, pbox+i+2);
-
-	crypt_block(pbox+ROUNDS, sbox);
-
-	for (i=0; i<4*256-2; i+=2)
-		crypt_block(sbox+i, sbox+i+2);
-
-	if (!IsForwardTransformation())
-		for (i=0; i<(ROUNDS+2)/2; i++)
-			std::swap(pbox[i], pbox[ROUNDS+1-i]);
-}
-
-// this version is only used to make pbox and sbox
-void Blowfish::Base::crypt_block(const word32 in[2], word32 out[2]) const
-{
-	word32 left = in[0];
-	word32 right = in[1];
-
-	const word32 *const s=sbox;
-	const word32 *p=pbox;
-
-	left ^= p[0];
-
-	for (unsigned i=0; i<ROUNDS/2; i++)
-	{
-		right ^= (((s[GETBYTE(left,3)] + s[256+GETBYTE(left,2)])
-			  ^ s[2*256+GETBYTE(left,1)]) + s[3*256+GETBYTE(left,0)])
-			  ^ p[2*i+1];
-
-		left ^= (((s[GETBYTE(right,3)] + s[256+GETBYTE(right,2)])
-			 ^ s[2*256+GETBYTE(right,1)]) + s[3*256+GETBYTE(right,0)])
-			 ^ p[2*i+2];
-	}
-
-	right ^= p[ROUNDS+1];
-
-	out[0] = right;
-	out[1] = left;
-}
-
-void Blowfish::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
-{
-	typedef BlockGetAndPut<word32, BigEndian> Block;
-
-	word32 left, right;
-	Block::Get(inBlock)(left)(right);
-
-	const word32 *const s=sbox;
-	const word32 *p=pbox;
-
-	left ^= p[0];
-
-	for (unsigned i=0; i<ROUNDS/2; i++)
-	{
-		right ^= (((s[GETBYTE(left,3)] + s[256+GETBYTE(left,2)])
-			  ^ s[2*256+GETBYTE(left,1)]) + s[3*256+GETBYTE(left,0)])
-			  ^ p[2*i+1];
-
-		left ^= (((s[GETBYTE(right,3)] + s[256+GETBYTE(right,2)])
-			 ^ s[2*256+GETBYTE(right,1)]) + s[3*256+GETBYTE(right,0)])
-			 ^ p[2*i+2];
-	}
-
-	right ^= p[ROUNDS+1];
-
-	Block::Put(xorBlock, outBlock)(right)(left);
-}
-
-NAMESPACE_END