From 5494fc310acf0aabb9d828451331e44483eb21c7 Mon Sep 17 00:00:00 2001
From: Malfurious <m@lfurio.us>
Date: Mon, 21 Oct 2024 11:09:00 -0400
Subject: Remove Crypto++ library

The tracked version of Crypto++ is going on 10 years old and doesn't
always compile properly on modern tooling.

This removes the entire subdirectory as well as references to files in
the build script.  Due to the number of files touched by this commit, I
opt to add its replacement in the next commit.

Signed-off-by: Malfurious <m@lfurio.us>
---
 cryptopp562/oaep.cpp | 97 ----------------------------------------------------
 1 file changed, 97 deletions(-)
 delete mode 100644 cryptopp562/oaep.cpp

(limited to 'cryptopp562/oaep.cpp')

diff --git a/cryptopp562/oaep.cpp b/cryptopp562/oaep.cpp
deleted file mode 100644
index 1d474be..0000000
--- a/cryptopp562/oaep.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-// oaep.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-
-#include "oaep.h"
-#include <functional>
-
-NAMESPACE_BEGIN(CryptoPP)
-
-// ********************************************************
-
-size_t OAEP_Base::MaxUnpaddedLength(size_t paddedLength) const
-{
-	return SaturatingSubtract(paddedLength/8, 1+2*DigestSize());
-}
-
-void OAEP_Base::Pad(RandomNumberGenerator &rng, const byte *input, size_t inputLength, byte *oaepBlock, size_t oaepBlockLen, const NameValuePairs &parameters) const
-{
-	assert (inputLength <= MaxUnpaddedLength(oaepBlockLen));
-
-	// convert from bit length to byte length
-	if (oaepBlockLen % 8 != 0)
-	{
-		oaepBlock[0] = 0;
-		oaepBlock++;
-	}
-	oaepBlockLen /= 8;
-
-	std::auto_ptr<HashTransformation> pHash(NewHash());
-	const size_t hLen = pHash->DigestSize();
-	const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;
-	byte *const maskedSeed = oaepBlock;
-	byte *const maskedDB = oaepBlock+seedLen;
-
-	ConstByteArrayParameter encodingParameters;
-	parameters.GetValue(Name::EncodingParameters(), encodingParameters);
-
-	// DB = pHash || 00 ... || 01 || M
-	pHash->CalculateDigest(maskedDB, encodingParameters.begin(), encodingParameters.size());
-	memset(maskedDB+hLen, 0, dbLen-hLen-inputLength-1);
-	maskedDB[dbLen-inputLength-1] = 0x01;
-	memcpy(maskedDB+dbLen-inputLength, input, inputLength);
-
-	rng.GenerateBlock(maskedSeed, seedLen);
-	std::auto_ptr<MaskGeneratingFunction> pMGF(NewMGF());
-	pMGF->GenerateAndMask(*pHash, maskedDB, dbLen, maskedSeed, seedLen);
-	pMGF->GenerateAndMask(*pHash, maskedSeed, seedLen, maskedDB, dbLen);
-}
-
-DecodingResult OAEP_Base::Unpad(const byte *oaepBlock, size_t oaepBlockLen, byte *output, const NameValuePairs &parameters) const
-{
-	bool invalid = false;
-
-	// convert from bit length to byte length
-	if (oaepBlockLen % 8 != 0)
-	{
-		invalid = (oaepBlock[0] != 0) || invalid;
-		oaepBlock++;
-	}
-	oaepBlockLen /= 8;
-
-	std::auto_ptr<HashTransformation> pHash(NewHash());
-	const size_t hLen = pHash->DigestSize();
-	const size_t seedLen = hLen, dbLen = oaepBlockLen-seedLen;
-
-	invalid = (oaepBlockLen < 2*hLen+1) || invalid;
-
-	SecByteBlock t(oaepBlock, oaepBlockLen);
-	byte *const maskedSeed = t;
-	byte *const maskedDB = t+seedLen;
-
-	std::auto_ptr<MaskGeneratingFunction> pMGF(NewMGF());
-	pMGF->GenerateAndMask(*pHash, maskedSeed, seedLen, maskedDB, dbLen);
-	pMGF->GenerateAndMask(*pHash, maskedDB, dbLen, maskedSeed, seedLen);
-
-	ConstByteArrayParameter encodingParameters;
-	parameters.GetValue(Name::EncodingParameters(), encodingParameters);
-
-	// DB = pHash' || 00 ... || 01 || M
-	byte *M = std::find(maskedDB+hLen, maskedDB+dbLen, 0x01);
-	invalid = (M == maskedDB+dbLen) || invalid;
-	invalid = (std::find_if(maskedDB+hLen, M, std::bind2nd(std::not_equal_to<byte>(), 0)) != M) || invalid;
-	invalid = !pHash->VerifyDigest(maskedDB, encodingParameters.begin(), encodingParameters.size()) || invalid;
-
-	if (invalid)
-		return DecodingResult();
-
-	M++;
-	memcpy(output, M, maskedDB+dbLen-M);
-	return DecodingResult(maskedDB+dbLen-M);
-}
-
-NAMESPACE_END
-
-#endif
-- 
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