QuasarApp/qca
4
0
Fork 0
mirror of https://github.com/QuasarApp/qca.git synced 2025-05-06 15:59:34 +00:00
Code Issues Projects Releases Wiki Activity

Initial add of HMAC support for Botan provider

Browse Source 
Note that this has issues with long keys (more than 512 bytes). If you get
segfaults in set_key, then that is likely the problem. I've queried
Jack Lloyd about it, but no answer at this stage.

svn path=/trunk/kdesupport/qca/; revision=406446
This commit is contained in:
Brad Hards 2005-04-18 22:18:50 +00:00
parent 8da07f1232
commit a101cdeff6
1 changed files with 77 additions and 1 deletions

78
plugins/qca-botan/qca-botan.cpp

@ -1,6 +1,6 @@
/*
* Copyright (C) 2004 Justin Karneges
* Copyright (C) 2004 Brad Hards <bradh@frogmouth.net>
* Copyright (C) 2004-2005 Brad Hards <bradh@frogmouth.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -30,6 +30,7 @@
#include <botan/sha256.h>
#include <botan/sha_64.h>
#include <botan/rmd160.h>
#include <botan/hmac.h>
#include <stdlib.h>
@ -388,6 +389,63 @@ private:
Botan::RIPEMD_160 *hashObj;
};
#include <iostream>
class BotanHMACContext : public QCA::MACContext
{
public:
BotanHMACContext( QString hashName, QCA::Provider *p, const QString &type) : QCA::MACContext(p, type)
{
m_hashObj = new Botan::HMAC(hashName.toStdString());
if (0 == m_hashObj) {
std::cout << "null context object" << std::endl;
}
}
~BotanHMACContext()
{
}
void setup(const QCA::SymmetricKey &key)
{
// this often gets called with an empty key, because that is the default
// in the QCA MessageAuthenticationCode constructor. Botan doesn't like
// that happening.
if (key.size() > 0) {
m_hashObj->set_key( (const Botan::byte *)key.data(), key.size() );
}
}
Context *clone() const
{
return new BotanHMACContext(*this);
}
void clear()
{
m_hashObj->clear();
}
QCA::KeyLength keyLength() const
{
return anyKeyLength();
}
void update(const QSecureArray &a)
{
m_hashObj->update( (const Botan::byte*)a.data(), a.size() );
}
void final( QSecureArray *out)
{
out->resize( m_hashObj->OUTPUT_LENGTH );
m_hashObj->final( (Botan::byte *)out->data() );
}
protected:
Botan::HMAC *m_hashObj;
};
class botanProvider : public QCA::Provider
{
@ -415,6 +473,12 @@ public:
list += "sha384";
list += "sha512";
list += "ripemd160";
list += "hmac(md5)";
list += "hmac(sha1)";
list += "hmac(sha256)";
list += "hmac(sha384)";
list += "hmac(sha512)";
list += "hmac(ripemd160)";
return list;
}
@ -438,6 +502,18 @@ public:
return new BotanSHA512Context( this );
else if ( type == "ripemd160" )
return new BotanRIPEMD160Context( this );
else if ( type == "hmac(md5)" )
return new BotanHMACContext( QString("MD5"), this, type );
else if ( type == "hmac(sha1)" )
return new BotanHMACContext( QString("SHA-1"), this, type );
else if ( type == "hmac(sha256)" )
return new BotanHMACContext( QString("SHA-256"), this, type );
else if ( type == "hmac(sha384)" )
return new BotanHMACContext( QString("SHA-384"), this, type );
else if ( type == "hmac(sha512)" )
return new BotanHMACContext( QString("SHA-512"), this, type );
else if ( type == "hmac(ripemd160)" )
return new BotanHMACContext( QString("RIPEMD-160"), this, type );
else
return 0;
}