libtransport.git Files · backends/twitter/libtwitcurl/HMAC_SHA1.cpp

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Location: libtransport.git/backends/twitter/libtwitcurl/HMAC_SHA1.cpp

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Vladimír Matěna

Fix double free in DummyConnectionServer

Do not create shared ptr from this as this lead to double free in
UserRegistryTest::login test. Shared ptr was needed to set event
owner in acceptConnection, actually it is never needed as events
are never filtered by owner. Thus it was removed and there is no
need to create shared ptr from this.

//******************************************************************************
//* HMAC_SHA1.cpp : Implementation of HMAC SHA1 algorithm
//*                 Comfort to RFC 2104
//*
//******************************************************************************
#include "HMAC_SHA1.h"
#include <iostream>
#include <memory>


void CHMAC_SHA1::HMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len, BYTE *digest)
{
	memset(SHA1_Key, 0, SHA1_BLOCK_SIZE);

	/* repeated 64 times for values in ipad and opad */
	memset(m_ipad, 0x36, sizeof(m_ipad));
	memset(m_opad, 0x5c, sizeof(m_opad));

	/* STEP 1 */
	if (key_len > SHA1_BLOCK_SIZE)
	{
		CSHA1::Reset();
		CSHA1::Update((UINT_8 *)key, key_len);
		CSHA1::Final();

		CSHA1::GetHash((UINT_8 *)SHA1_Key);
	}
	else
		memcpy(SHA1_Key, key, key_len);

	/* STEP 2 */
	for (size_t i=0; i<sizeof(m_ipad); i++)
	{
		m_ipad[i] ^= SHA1_Key[i];		
	}

	/* STEP 3 */
	memcpy(AppendBuf1, m_ipad, sizeof(m_ipad));
	memcpy(AppendBuf1 + sizeof(m_ipad), text, text_len);

	/* STEP 4 */
	CSHA1::Reset();
	CSHA1::Update((UINT_8 *)AppendBuf1, sizeof(m_ipad) + text_len);
	CSHA1::Final();

	CSHA1::GetHash((UINT_8 *)szReport);

	/* STEP 5 */
	for (size_t j=0; j<sizeof(m_opad); j++)
	{
		m_opad[j] ^= SHA1_Key[j];
	}

	/* STEP 6 */
	memcpy(AppendBuf2, m_opad, sizeof(m_opad));
	memcpy(AppendBuf2 + sizeof(m_opad), szReport, SHA1_DIGEST_LENGTH);

	/*STEP 7 */
	CSHA1::Reset();
	CSHA1::Update((UINT_8 *)AppendBuf2, sizeof(m_opad) + SHA1_DIGEST_LENGTH);
	CSHA1::Final();

	CSHA1::GetHash((UINT_8 *)digest);
}