Added tqca package to the sources tree. This module is from

the original qca-1.0 sources with the TQt layer added.
This resolves bug report 817.

3 files changed, 2136 insertions, 0 deletions

diff --git a/src/qca.cpp b/src/qca.cpp
new file mode 100644
index 0000000..7db8379
--- /dev/null
+++ b/src/qca.cpp
@@ -0,0 +1,1479 @@
+/*
+ * qca.cpp - Qt Cryptographic Architecture
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include"qca.h"
+
+#include<tqptrlist.h>
+#include<tqdir.h>
+#include<tqfileinfo.h>
+#include<tqstringlist.h>
+#include<tqlibrary.h>
+#include<tqtimer.h>
+#include<tqhostaddress.h>
+#include<tqapplication.h>
+#include<tqguardedptr.h>
+#include<stdlib.h>
+#include"qcaprovider.h"
+
+#if defined(Q_OS_WIN32)
+#define PLUGIN_EXT "dll"
+#elif defined(Q_OS_MAC)
+#define PLUGIN_EXT "dylib"
+#else
+#define PLUGIN_EXT "so"
+#endif
+
+using namespace TQCA;
+
+class ProviderItem
+{
+public:
+	TQCAProvider *p;
+	TQString fname;
+
+	static ProviderItem *load(const TQString &fname)
+	{
+		TQLibrary *lib = new TQLibrary(fname);
+		if(!lib->load()) {
+			delete lib;
+			return 0;
+		}
+		void *s = lib->resolve("createProvider");
+		if(!s) {
+			delete lib;
+			return 0;
+		}
+		TQCAProvider *(*createProvider)() = (TQCAProvider *(*)())s;
+		TQCAProvider *p = createProvider();
+		if(!p) {
+			delete lib;
+			return 0;
+		}
+		ProviderItem *i = new ProviderItem(lib, p);
+		i->fname = fname;
+		return i;
+	}
+
+	static ProviderItem *fromClass(TQCAProvider *p)
+	{
+		ProviderItem *i = new ProviderItem(0, p);
+		return i;
+	}
+
+	~ProviderItem()
+	{
+		delete p;
+		delete lib;
+	}
+
+	void ensureInit()
+	{
+		if(init_done)
+			return;
+		init_done = true;
+		p->init();
+	}
+
+private:
+	TQLibrary *lib;
+	bool init_done;
+
+	ProviderItem(TQLibrary *_lib, TQCAProvider *_p)
+	{
+		lib = _lib;
+		p = _p;
+		init_done = false;
+	}
+};
+
+static TQPtrList<ProviderItem> providerList;
+static bool qca_init = false;
+
+static bool plugin_have(const TQString &fname)
+{
+	TQPtrListIterator<ProviderItem> it(providerList);
+	for(ProviderItem *i; (i = it.current()); ++it) {
+		if(i->fname == fname)
+			return true;
+	}
+	return false;
+}
+
+static void plugin_scan()
+{
+	TQStringList dirs = TQApplication::libraryPaths();
+	for(TQStringList::ConstIterator it = dirs.begin(); it != dirs.end(); ++it) {
+		TQDir libpath(*it);
+		TQDir dir(libpath.filePath("crypto"));
+		if(!dir.exists())
+			continue;
+
+		TQStringList list = dir.entryList();
+		for(TQStringList::ConstIterator it = list.begin(); it != list.end(); ++it) {
+			TQFileInfo fi(dir.filePath(*it));
+			if(fi.isDir())
+				continue;
+			if(fi.extension() != PLUGIN_EXT)
+				continue;
+			TQString fname = fi.filePath();
+
+			// don't load the same plugin again!
+			if(plugin_have(fname))
+				continue;
+			//printf("f=[%s]\n", fname.latin1());
+
+			ProviderItem *i = ProviderItem::load(fname);
+			if(!i)
+				continue;
+			if(i->p->qcaVersion() != TQCA_PLUGIN_VERSION) {
+				delete i;
+				continue;
+			}
+
+			providerList.append(i);
+		}
+	}
+}
+
+static void plugin_addClass(TQCAProvider *p)
+{
+	ProviderItem *i = ProviderItem::fromClass(p);
+	providerList.prepend(i);
+}
+
+static void plugin_unloadall()
+{
+	providerList.clear();
+}
+
+static int plugin_caps()
+{
+	int caps = 0;
+	TQPtrListIterator<ProviderItem> it(providerList);
+	for(ProviderItem *i; (i = it.current()); ++it)
+		caps |= i->p->capabilities();
+	return caps;
+}
+
+TQString TQCA::arrayToHex(const TQByteArray &a)
+{
+	TQString out;
+	for(int n = 0; n < (int)a.size(); ++n) {
+		TQString str;
+		str.sprintf("%02x", (uchar)a[n]);
+		out.append(str);
+	}
+	return out;
+}
+
+TQByteArray TQCA::hexToArray(const TQString &str)
+{
+	TQByteArray out(str.length() / 2);
+	int at = 0;
+	for(int n = 0; n + 1 < (int)str.length(); n += 2) {
+		uchar a = str[n];
+		uchar b = str[n+1];
+		uchar c = ((a & 0x0f) << 4) + (b & 0x0f);
+		out[at++] = c;
+	}
+	return out;
+}
+
+void TQCA::init()
+{
+	if(qca_init)
+		return;
+	qca_init = true;
+	providerList.setAutoDelete(true);
+}
+
+bool TQCA::isSupported(int capabilities)
+{
+	init();
+
+	int caps = plugin_caps();
+	if(caps & capabilities)
+		return true;
+
+	// ok, try scanning for new stuff
+	plugin_scan();
+	caps = plugin_caps();
+	if(caps & capabilities)
+		return true;
+
+	return false;
+}
+
+void TQCA::insertProvider(TQCAProvider *p)
+{
+	plugin_addClass(p);
+}
+
+void TQCA::unloadAllPlugins()
+{
+	plugin_unloadall();
+}
+
+static void *getContext(int cap)
+{
+	init();
+
+	// this call will also trip a scan for new plugins if needed
+	if(!TQCA::isSupported(cap))
+		return 0;
+
+	TQPtrListIterator<ProviderItem> it(providerList);
+	for(ProviderItem *i; (i = it.current()); ++it) {
+		if(i->p->capabilities() & cap) {
+			i->ensureInit();
+			return i->p->context(cap);
+		}
+	}
+	return 0;
+}
+
+
+//----------------------------------------------------------------------------
+// Hash
+//----------------------------------------------------------------------------
+class Hash::Private
+{
+public:
+	Private()
+	{
+		c = 0;
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	void reset()
+	{
+		c->reset();
+	}
+
+	TQCA_HashContext *c;
+};
+
+Hash::Hash(TQCA_HashContext *c)
+{
+	d = new Private;
+	d->c = c;
+}
+
+Hash::Hash(const Hash &from)
+{
+	d = new Private;
+	*this = from;
+}
+
+Hash & Hash::operator=(const Hash &from)
+{
+	delete d->c;
+	d->c = from.d->c->clone();
+	return *this;
+}
+
+Hash::~Hash()
+{
+	delete d;
+}
+
+void Hash::clear()
+{
+	d->reset();
+}
+
+void Hash::update(const TQByteArray &a)
+{
+	d->c->update(a.data(), a.size());
+}
+
+TQByteArray Hash::final()
+{
+	TQByteArray buf;
+	d->c->final(&buf);
+	return buf;
+}
+
+
+//----------------------------------------------------------------------------
+// Cipher
+//----------------------------------------------------------------------------
+class Cipher::Private
+{
+public:
+	Private()
+	{
+		c = 0;
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	void reset()
+	{
+		dir = Encrypt;
+		key.resize(0);
+		iv.resize(0);
+		err = false;
+	}
+
+	TQCA_CipherContext *c;
+	int dir;
+	int mode;
+	TQByteArray key, iv;
+	bool err;
+};
+
+Cipher::Cipher(TQCA_CipherContext *c, int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+{
+	d = new Private;
+	d->c = c;
+	reset(dir, mode, key, iv, pad);
+}
+
+Cipher::Cipher(const Cipher &from)
+{
+	d = new Private;
+	*this = from;
+}
+
+Cipher & Cipher::operator=(const Cipher &from)
+{
+	delete d->c;
+	d->c = from.d->c->clone();
+	d->dir = from.d->dir;
+	d->mode = from.d->mode;
+	d->key = from.d->key.copy();
+	d->iv = from.d->iv.copy();
+	d->err = from.d->err;
+	return *this;
+}
+
+Cipher::~Cipher()
+{
+	delete d;
+}
+
+TQByteArray Cipher::dyn_generateKey(int size) const
+{
+	TQByteArray buf;
+	if(size != -1)
+		buf.resize(size);
+	else
+		buf.resize(d->c->keySize());
+	if(!d->c->generateKey(buf.data(), size))
+		return TQByteArray();
+	return buf;
+}
+
+TQByteArray Cipher::dyn_generateIV() const
+{
+	TQByteArray buf(d->c->blockSize());
+	if(!d->c->generateIV(buf.data()))
+		return TQByteArray();
+	return buf;
+}
+
+void Cipher::reset(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+{
+	d->reset();
+
+	d->dir = dir;
+	d->mode = mode;
+	d->key = key.copy();
+	d->iv = iv.copy();
+	if(!d->c->setup(d->dir, d->mode, d->key.isEmpty() ? 0: d->key.data(), d->key.size(), d->iv.isEmpty() ? 0 : d->iv.data(), pad)) {
+		d->err = true;
+		return;
+	}
+}
+
+bool Cipher::update(const TQByteArray &a)
+{
+	if(d->err)
+		return false;
+
+	if(!a.isEmpty()) {
+		if(!d->c->update(a.data(), a.size())) {
+			d->err = true;
+			return false;
+		}
+	}
+	return true;
+}
+
+TQByteArray Cipher::final(bool *ok)
+{
+	if(ok)
+		*ok = false;
+	if(d->err)
+		return TQByteArray();
+
+	TQByteArray out;
+	if(!d->c->final(&out)) {
+		d->err = true;
+		return TQByteArray();
+	}
+	if(ok)
+		*ok = true;
+	return out;
+}
+
+
+//----------------------------------------------------------------------------
+// SHA1
+//----------------------------------------------------------------------------
+SHA1::SHA1()
+:Hash((TQCA_HashContext *)getContext(CAP_SHA1))
+{
+}
+
+
+//----------------------------------------------------------------------------
+// SHA256
+//----------------------------------------------------------------------------
+SHA256::SHA256()
+:Hash((TQCA_HashContext *)getContext(CAP_SHA256))
+{
+}
+
+
+//----------------------------------------------------------------------------
+// MD5
+//----------------------------------------------------------------------------
+MD5::MD5()
+:Hash((TQCA_HashContext *)getContext(CAP_MD5))
+{
+}
+
+
+//----------------------------------------------------------------------------
+// BlowFish
+//----------------------------------------------------------------------------
+BlowFish::BlowFish(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+:Cipher((TQCA_CipherContext *)getContext(CAP_BlowFish), dir, mode, key, iv, pad)
+{
+}
+
+
+//----------------------------------------------------------------------------
+// TripleDES
+//----------------------------------------------------------------------------
+TripleDES::TripleDES(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+:Cipher((TQCA_CipherContext *)getContext(CAP_TripleDES), dir, mode, key, iv, pad)
+{
+}
+
+
+//----------------------------------------------------------------------------
+// AES128
+//----------------------------------------------------------------------------
+AES128::AES128(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+:Cipher((TQCA_CipherContext *)getContext(CAP_AES128), dir, mode, key, iv, pad)
+{
+}
+
+
+//----------------------------------------------------------------------------
+// AES256
+//----------------------------------------------------------------------------
+AES256::AES256(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad)
+:Cipher((TQCA_CipherContext *)getContext(CAP_AES256), dir, mode, key, iv, pad)
+{
+}
+
+
+//----------------------------------------------------------------------------
+// RSAKey
+//----------------------------------------------------------------------------
+class RSAKey::Private
+{
+public:
+	Private()
+	{
+		c = 0;
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	TQCA_RSAKeyContext *c;
+};
+
+RSAKey::RSAKey()
+{
+	d = new Private;
+	d->c = (TQCA_RSAKeyContext *)getContext(CAP_RSA);
+}
+
+RSAKey::RSAKey(const RSAKey &from)
+{
+	d = new Private;
+	*this = from;
+}
+
+RSAKey & RSAKey::operator=(const RSAKey &from)
+{
+	delete d->c;
+	d->c = from.d->c->clone();
+	return *this;
+}
+
+RSAKey::~RSAKey()
+{
+	delete d;
+}
+
+bool RSAKey::isNull() const
+{
+	return d->c->isNull();
+}
+
+bool RSAKey::havePublic() const
+{
+	return d->c->havePublic();
+}
+
+bool RSAKey::havePrivate() const
+{
+	return d->c->havePrivate();
+}
+
+TQByteArray RSAKey::toDER(bool publicOnly) const
+{
+	TQByteArray out;
+	if(!d->c->toDER(&out, publicOnly))
+		return TQByteArray();
+	return out;
+}
+
+bool RSAKey::fromDER(const TQByteArray &a)
+{
+	return d->c->createFromDER(a.data(), a.size());
+}
+
+TQString RSAKey::toPEM(bool publicOnly) const
+{
+	TQByteArray out;
+	if(!d->c->toPEM(&out, publicOnly))
+		return TQByteArray();
+
+	TQCString cs;
+	cs.resize(out.size()+1);
+	memcpy(cs.data(), out.data(), out.size());
+	return TQString::fromLatin1(cs);
+}
+
+bool RSAKey::fromPEM(const TQString &str)
+{
+	TQCString cs = str.latin1();
+	TQByteArray a(cs.length());
+	memcpy(a.data(), cs.data(), a.size());
+	return d->c->createFromPEM(a.data(), a.size());
+}
+
+bool RSAKey::fromNative(void *p)
+{
+	return d->c->createFromNative(p);
+}
+
+bool RSAKey::encrypt(const TQByteArray &a, TQByteArray *b, bool oaep) const
+{
+	TQByteArray out;
+	if(!d->c->encrypt(a, &out, oaep))
+		return false;
+	*b = out;
+	return true;
+}
+
+bool RSAKey::decrypt(const TQByteArray &a, TQByteArray *b, bool oaep) const
+{
+	TQByteArray out;
+	if(!d->c->decrypt(a, &out, oaep))
+		return false;
+	*b = out;
+	return true;
+}
+
+bool RSAKey::generate(unsigned int bits)
+{
+	return d->c->generate(bits);
+}
+
+
+//----------------------------------------------------------------------------
+// RSA
+//----------------------------------------------------------------------------
+RSA::RSA()
+{
+}
+
+RSA::~RSA()
+{
+}
+
+RSAKey RSA::key() const
+{
+	return v_key;
+}
+
+void RSA::setKey(const RSAKey &k)
+{
+	v_key = k;
+}
+
+bool RSA::encrypt(const TQByteArray &a, TQByteArray *b, bool oaep) const
+{
+	if(v_key.isNull())
+		return false;
+	return v_key.encrypt(a, b, oaep);
+}
+
+bool RSA::decrypt(const TQByteArray &a, TQByteArray *b, bool oaep) const
+{
+	if(v_key.isNull())
+		return false;
+	return v_key.decrypt(a, b, oaep);
+}
+
+RSAKey RSA::generateKey(unsigned int bits)
+{
+	RSAKey k;
+	k.generate(bits);
+	return k;
+}
+
+
+//----------------------------------------------------------------------------
+// Cert
+//----------------------------------------------------------------------------
+class Cert::Private
+{
+public:
+	Private()
+	{
+		c = 0;
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	TQCA_CertContext *c;
+};
+
+Cert::Cert()
+{
+	d = new Private;
+	d->c = (TQCA_CertContext *)getContext(CAP_X509);
+}
+
+Cert::Cert(const Cert &from)
+{
+	d = new Private;
+	*this = from;
+}
+
+Cert & Cert::operator=(const Cert &from)
+{
+	delete d->c;
+	d->c = from.d->c->clone();
+	return *this;
+}
+
+Cert::~Cert()
+{
+	delete d;
+}
+
+void Cert::fromContext(TQCA_CertContext *ctx)
+{
+	delete d->c;
+	d->c = ctx;
+}
+
+bool Cert::isNull() const
+{
+	return d->c->isNull();
+}
+
+TQString Cert::commonName() const
+{
+	CertProperties props = subject();
+	return props["CN"];
+}
+
+TQString Cert::serialNumber() const
+{
+	return d->c->serialNumber();
+}
+
+TQString Cert::subjectString() const
+{
+	return d->c->subjectString();
+}
+
+TQString Cert::issuerString() const
+{
+	return d->c->issuerString();
+}
+
+CertProperties Cert::subject() const
+{
+	TQValueList<TQCA_CertProperty> list = d->c->subject();
+	CertProperties props;
+	for(TQValueList<TQCA_CertProperty>::ConstIterator it = list.begin(); it != list.end(); ++it)
+		props[(*it).var] = (*it).val;
+	return props;
+}
+
+CertProperties Cert::issuer() const
+{
+	TQValueList<TQCA_CertProperty> list = d->c->issuer();
+	CertProperties props;
+	for(TQValueList<TQCA_CertProperty>::ConstIterator it = list.begin(); it != list.end(); ++it)
+		props[(*it).var] = (*it).val;
+	return props;
+}
+
+TQDateTime Cert::notBefore() const
+{
+	return d->c->notBefore();
+}
+
+TQDateTime Cert::notAfter() const
+{
+	return d->c->notAfter();
+}
+
+TQByteArray Cert::toDER() const
+{
+	TQByteArray out;
+	if(!d->c->toDER(&out))
+		return TQByteArray();
+	return out;
+}
+
+bool Cert::fromDER(const TQByteArray &a)
+{
+	return d->c->createFromDER(a.data(), a.size());
+}
+
+TQString Cert::toPEM() const
+{
+	TQByteArray out;
+	if(!d->c->toPEM(&out))
+		return TQByteArray();
+
+	TQCString cs;
+	cs.resize(out.size()+1);
+	memcpy(cs.data(), out.data(), out.size());
+	return TQString::fromLatin1(cs);
+}
+
+bool Cert::fromPEM(const TQString &str)
+{
+	TQCString cs = str.latin1();
+	TQByteArray a(cs.length());
+	memcpy(a.data(), cs.data(), a.size());
+	return d->c->createFromPEM(a.data(), a.size());
+}
+
+
+//----------------------------------------------------------------------------
+// TLS
+//----------------------------------------------------------------------------
+class TLS::Private
+{
+public:
+	Private()
+	{
+		c = (TQCA_TLSContext *)getContext(CAP_TLS);
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	void reset()
+	{
+		handshaken = false;
+		closing = false;
+		in.resize(0);
+		out.resize(0);
+		from_net.resize(0);
+		to_net.resize(0);
+		host = "";
+		hostMismatch = false;
+		cert = Cert();
+		bytesEncoded = 0;
+		tryMore = false;
+	}
+
+	void appendArray(TQByteArray *a, const TQByteArray &b)
+	{
+		int oldsize = a->size();
+		a->resize(oldsize + b.size());
+		memcpy(a->data() + oldsize, b.data(), b.size());
+	}
+
+	Cert cert;
+	TQCA_TLSContext *c;
+	TQByteArray in, out, to_net, from_net;
+	int bytesEncoded;
+	bool tryMore;
+	bool handshaken;
+	TQString host;
+	bool hostMismatch;
+	bool closing;
+
+	Cert ourCert;
+	RSAKey ourKey;
+	TQPtrList<TQCA_CertContext> store;
+};
+
+TLS::TLS(TQObject *parent)
+:TQObject(parent)
+{
+	d = new Private;
+}
+
+TLS::~TLS()
+{
+	delete d;
+}
+
+void TLS::setCertificate(const Cert &cert, const RSAKey &key)
+{
+	d->ourCert = cert;
+	d->ourKey = key;
+}
+
+void TLS::setCertificateStore(const TQPtrList<Cert> &store)
+{
+	// convert the cert list into a context list
+	d->store.clear();
+	TQPtrListIterator<Cert> it(store);
+	for(Cert *cert; (cert = it.current()); ++it)
+		d->store.append(cert->d->c);
+}
+
+void TLS::reset()
+{
+	d->reset();
+}
+
+bool TLS::startClient(const TQString &host)
+{
+	d->reset();
+	d->host = host;
+
+	if(!d->c->startClient(d->store, *d->ourCert.d->c, *d->ourKey.d->c))
+		return false;
+	TQTimer::singleShot(0, this, SLOT(update()));
+	return true;
+}
+
+bool TLS::startServer()
+{
+	d->reset();
+
+	if(!d->c->startServer(d->store, *d->ourCert.d->c, *d->ourKey.d->c))
+		return false;
+	TQTimer::singleShot(0, this, SLOT(update()));
+	return true;
+}
+
+void TLS::close()
+{
+	if(!d->handshaken || d->closing)
+		return;
+
+	d->closing = true;
+	TQTimer::singleShot(0, this, SLOT(update()));
+}
+
+bool TLS::isHandshaken() const
+{
+	return d->handshaken;
+}
+
+void TLS::write(const TQByteArray &a)
+{
+	d->appendArray(&d->out, a);
+	update();
+}
+
+TQByteArray TLS::read()
+{
+	TQByteArray a = d->in.copy();
+	d->in.resize(0);
+	return a;
+}
+
+void TLS::writeIncoming(const TQByteArray &a)
+{
+	d->appendArray(&d->from_net, a);
+	update();
+}
+
+TQByteArray TLS::readOutgoing()
+{
+	TQByteArray a = d->to_net.copy();
+	d->to_net.resize(0);
+	return a;
+}
+
+TQByteArray TLS::readUnprocessed()
+{
+	TQByteArray a = d->from_net.copy();
+	d->from_net.resize(0);
+	return a;
+}
+
+const Cert & TLS::peerCertificate() const
+{
+	return d->cert;
+}
+
+int TLS::certificateValidityResult() const
+{
+	if(d->hostMismatch)
+		return TQCA::TLS::HostMismatch;
+	else
+		return d->c->validityResult();
+}
+
+void TLS::update()
+{
+	bool force_read = false;
+	bool eof = false;
+	bool done = false;
+	TQGuardedPtr<TLS> self = this;
+
+	if(d->closing) {
+		TQByteArray a;
+		int r = d->c->shutdown(d->from_net, &a);
+		d->from_net.resize(0);
+		if(r == TQCA_TLSContext::Error) {
+			reset();
+			error(ErrHandshake);
+			return;
+		}
+		if(r == TQCA_TLSContext::Success) {
+			d->from_net = d->c->unprocessed().copy();
+			done = true;
+		}
+		d->appendArray(&d->to_net, a);
+	}
+	else {
+		if(!d->handshaken) {
+			TQByteArray a;
+			int r = d->c->handshake(d->from_net, &a);
+			d->from_net.resize(0);
+			if(r == TQCA_TLSContext::Error) {
+				reset();
+				error(ErrHandshake);
+				return;
+			}
+			d->appendArray(&d->to_net, a);
+			if(r == TQCA_TLSContext::Success) {
+				TQCA_CertContext *cc = d->c->peerCertificate();
+				if(cc && !d->host.isEmpty() && d->c->validityResult() == TQCA::TLS::Valid) {
+					if(!cc->matchesAddress(d->host))
+						d->hostMismatch = true;
+				}
+				d->cert.fromContext(cc);
+				d->handshaken = true;
+				handshaken();
+				if(!self)
+					return;
+
+				// there is a teeny tiny possibility that incoming data awaits.  let us get it.
+				force_read = true;
+			}
+		}
+
+		if(d->handshaken) {
+			if(!d->out.isEmpty() || d->tryMore) {
+				d->tryMore = false;
+				TQByteArray a;
+				int enc;
+				bool more = false;
+				bool ok = d->c->encode(d->out, &a, &enc);
+				eof = d->c->eof();
+				if(ok && enc < (int)d->out.size())
+					more = true;
+				d->out.resize(0);
+				if(!eof) {
+					if(!ok) {
+						reset();
+						error(ErrCrypt);
+						return;
+					}
+					d->bytesEncoded += enc;
+					if(more)
+						d->tryMore = true;
+					d->appendArray(&d->to_net, a);
+				}
+			}
+			if(!d->from_net.isEmpty() || force_read) {
+				TQByteArray a, b;
+				bool ok = d->c->decode(d->from_net, &a, &b);
+				eof = d->c->eof();
+				d->from_net.resize(0);
+				if(!ok) {
+					reset();
+					error(ErrCrypt);
+					return;
+				}
+				d->appendArray(&d->in, a);
+				d->appendArray(&d->to_net, b);
+			}
+
+			if(!d->in.isEmpty()) {
+				readyRead();
+				if(!self)
+					return;
+			}
+		}
+	}
+
+	if(!d->to_net.isEmpty()) {
+		int bytes = d->bytesEncoded;
+		d->bytesEncoded = 0;
+		readyReadOutgoing(bytes);
+		if(!self)
+			return;
+	}
+
+	if(eof) {
+		close();
+		if(!self)
+			return;
+		return;
+	}
+
+	if(d->closing && done) {
+		reset();
+		closed();
+	}
+}
+
+
+//----------------------------------------------------------------------------
+// SASL
+//----------------------------------------------------------------------------
+TQString saslappname = "qca";
+class SASL::Private
+{
+public:
+	Private()
+	{
+		c = (TQCA_SASLContext *)getContext(CAP_SASL);
+	}
+
+	~Private()
+	{
+		delete c;
+	}
+
+	void setSecurityProps()
+	{
+		c->setSecurityProps(noPlain, noActive, noDict, noAnon, reqForward, reqCreds, reqMutual, ssfmin, ssfmax, ext_authid, ext_ssf);
+	}
+
+	// security opts
+	bool noPlain, noActive, noDict, noAnon, reqForward, reqCreds, reqMutual;
+	int ssfmin, ssfmax;
+	TQString ext_authid;
+	int ext_ssf;
+
+	bool tried;
+	TQCA_SASLContext *c;
+	TQHostAddress localAddr, remoteAddr;
+	int localPort, remotePort;
+	TQByteArray stepData;
+	bool allowCSF;
+	bool first, server;
+
+	TQByteArray inbuf, outbuf;
+};
+
+SASL::SASL(TQObject *parent)
+:TQObject(parent)
+{
+	d = new Private;
+	reset();
+}
+
+SASL::~SASL()
+{
+	delete d;
+}
+
+void SASL::setAppName(const TQString &name)
+{
+	saslappname = name;
+}
+
+void SASL::reset()
+{
+	d->localPort = -1;
+	d->remotePort = -1;
+
+	d->noPlain = false;
+	d->noActive = false;
+	d->noDict = false;
+	d->noAnon = false;
+	d->reqForward = false;
+	d->reqCreds = false;
+	d->reqMutual = false;
+	d->ssfmin = 0;
+	d->ssfmax = 0;
+	d->ext_authid = "";
+	d->ext_ssf = 0;
+
+	d->inbuf.resize(0);
+	d->outbuf.resize(0);
+
+	d->c->reset();
+}
+
+int SASL::errorCondition() const
+{
+	return d->c->errorCond();
+}
+
+void SASL::setAllowPlain(bool b)
+{
+	d->noPlain = !b;
+}
+
+void SASL::setAllowAnonymous(bool b)
+{
+	d->noAnon = !b;
+}
+
+void SASL::setAllowActiveVulnerable(bool b)
+{
+	d->noActive = !b;
+}
+
+void SASL::setAllowDictionaryVulnerable(bool b)
+{
+	d->noDict = !b;
+}
+
+void SASL::setRequireForwardSecrecy(bool b)
+{
+	d->reqForward = b;
+}
+
+void SASL::setRequirePassCredentials(bool b)
+{
+	d->reqCreds = b;
+}
+
+void SASL::setRequireMutualAuth(bool b)
+{
+	d->reqMutual = b;
+}
+
+void SASL::setMinimumSSF(int x)
+{
+	d->ssfmin = x;
+}
+
+void SASL::setMaximumSSF(int x)
+{
+	d->ssfmax = x;
+}
+
+void SASL::setExternalAuthID(const TQString &authid)
+{
+	d->ext_authid = authid;
+}
+
+void SASL::setExternalSSF(int x)
+{
+	d->ext_ssf = x;
+}
+
+void SASL::setLocalAddr(const TQHostAddress &addr, Q_UINT16 port)
+{
+	d->localAddr = addr;
+	d->localPort = port;
+}
+
+void SASL::setRemoteAddr(const TQHostAddress &addr, Q_UINT16 port)
+{
+	d->remoteAddr = addr;
+	d->remotePort = port;
+}
+
+bool SASL::startClient(const TQString &service, const TQString &host, const TQStringList &mechlist, bool allowClientSendFirst)
+{
+	TQCA_SASLHostPort la, ra;
+	if(d->localPort != -1) {
+		la.addr = d->localAddr;
+		la.port = d->localPort;
+	}
+	if(d->remotePort != -1) {
+		ra.addr = d->remoteAddr;
+		ra.port = d->remotePort;
+	}
+
+	d->allowCSF = allowClientSendFirst;
+	d->c->setCoreProps(service, host, d->localPort != -1 ? &la : 0, d->remotePort != -1 ? &ra : 0);
+	d->setSecurityProps();
+
+	if(!d->c->clientStart(mechlist))
+		return false;
+	d->first = true;
+	d->server = false;
+	d->tried = false;
+	TQTimer::singleShot(0, this, SLOT(tryAgain()));
+	return true;
+}
+
+bool SASL::startServer(const TQString &service, const TQString &host, const TQString &realm, TQStringList *mechlist)
+{
+	TQCA_SASLHostPort la, ra;
+	if(d->localPort != -1) {
+		la.addr = d->localAddr;
+		la.port = d->localPort;
+	}
+	if(d->remotePort != -1) {
+		ra.addr = d->remoteAddr;
+		ra.port = d->remotePort;
+	}
+
+	d->c->setCoreProps(service, host, d->localPort != -1 ? &la : 0, d->remotePort != -1 ? &ra : 0);
+	d->setSecurityProps();
+
+	if(!d->c->serverStart(realm, mechlist, saslappname))
+		return false;
+	d->first = true;
+	d->server = true;
+	d->tried = false;
+	return true;
+}
+
+void SASL::putServerFirstStep(const TQString &mech)
+{
+	int r = d->c->serverFirstStep(mech, 0);
+	handleServerFirstStep(r);
+}
+
+void SASL::putServerFirstStep(const TQString &mech, const TQByteArray &clientInit)
+{
+	int r = d->c->serverFirstStep(mech, &clientInit);
+	handleServerFirstStep(r);
+}
+
+void SASL::handleServerFirstStep(int r)
+{
+	if(r == TQCA_SASLContext::Success)
+		authenticated();
+	else if(r == TQCA_SASLContext::Continue)
+		nextStep(d->c->result());
+	else if(r == TQCA_SASLContext::AuthCheck)
+		tryAgain();
+	else
+		error(ErrAuth);
+}
+
+void SASL::putStep(const TQByteArray &stepData)
+{
+	d->stepData = stepData.copy();
+	tryAgain();
+}
+
+void SASL::setUsername(const TQString &user)
+{
+	d->c->setClientParams(&user, 0, 0, 0);
+}
+
+void SASL::setAuthzid(const TQString &authzid)
+{
+	d->c->setClientParams(0, &authzid, 0, 0);
+}
+
+void SASL::setPassword(const TQString &pass)
+{
+	d->c->setClientParams(0, 0, &pass, 0);
+}
+
+void SASL::setRealm(const TQString &realm)
+{
+	d->c->setClientParams(0, 0, 0, &realm);
+}
+
+void SASL::continueAfterParams()
+{
+	tryAgain();
+}
+
+void SASL::continueAfterAuthCheck()
+{
+	tryAgain();
+}
+
+void SASL::tryAgain()
+{
+	int r;
+
+	if(d->server) {
+		if(!d->tried) {
+			r = d->c->nextStep(d->stepData);
+			d->tried = true;
+		}
+		else {
+			r = d->c->tryAgain();
+		}
+
+		if(r == TQCA_SASLContext::Error) {
+			error(ErrAuth);
+			return;
+		}
+		else if(r == TQCA_SASLContext::Continue) {
+			d->tried = false;
+			nextStep(d->c->result());
+			return;
+		}
+		else if(r == TQCA_SASLContext::AuthCheck) {
+			authCheck(d->c->username(), d->c->authzid());
+			return;
+		}
+	}
+	else {
+		if(d->first) {
+			if(!d->tried) {
+				r = d->c->clientFirstStep(d->allowCSF);
+				d->tried = true;
+			}
+			else
+				r = d->c->tryAgain();
+
+			if(r == TQCA_SASLContext::Error) {
+				error(ErrAuth);
+				return;
+			}
+			else if(r == TQCA_SASLContext::NeedParams) {
+				//d->tried = false;
+				TQCA_SASLNeedParams np = d->c->clientParamsNeeded();
+				needParams(np.user, np.authzid, np.pass, np.realm);
+				return;
+			}
+
+			TQString mech = d->c->mech();
+			const TQByteArray *clientInit = d->c->clientInit();
+
+			d->first = false;
+			d->tried = false;
+			clientFirstStep(mech, clientInit);
+		}
+		else {
+			if(!d->tried) {
+				r = d->c->nextStep(d->stepData);
+				d->tried = true;
+			}
+			else
+				r = d->c->tryAgain();
+
+			if(r == TQCA_SASLContext::Error) {
+				error(ErrAuth);
+				return;
+			}
+			else if(r == TQCA_SASLContext::NeedParams) {
+				//d->tried = false;
+				TQCA_SASLNeedParams np = d->c->clientParamsNeeded();
+				needParams(np.user, np.authzid, np.pass, np.realm);
+				return;
+			}
+			d->tried = false;
+			//else if(r == TQCA_SASLContext::Continue) {
+				nextStep(d->c->result());
+			//	return;
+			//}
+		}
+	}
+
+	if(r == TQCA_SASLContext::Success)
+		authenticated();
+	else if(r == TQCA_SASLContext::Error)
+		error(ErrAuth);
+}
+
+int SASL::ssf() const
+{
+	return d->c->security();
+}
+
+void SASL::write(const TQByteArray &a)
+{
+	TQByteArray b;
+	if(!d->c->encode(a, &b)) {
+		error(ErrCrypt);
+		return;
+	}
+	int oldsize = d->outbuf.size();
+	d->outbuf.resize(oldsize + b.size());
+	memcpy(d->outbuf.data() + oldsize, b.data(), b.size());
+	readyReadOutgoing(a.size());
+}
+
+TQByteArray SASL::read()
+{
+	TQByteArray a = d->inbuf.copy();
+	d->inbuf.resize(0);
+	return a;
+}
+
+void SASL::writeIncoming(const TQByteArray &a)
+{
+	TQByteArray b;
+	if(!d->c->decode(a, &b)) {
+		error(ErrCrypt);
+		return;
+	}
+	int oldsize = d->inbuf.size();
+	d->inbuf.resize(oldsize + b.size());
+	memcpy(d->inbuf.data() + oldsize, b.data(), b.size());
+	readyRead();
+}
+
+TQByteArray SASL::readOutgoing()
+{
+	TQByteArray a = d->outbuf.copy();
+	d->outbuf.resize(0);
+	return a;
+}
diff --git a/src/qca.h b/src/qca.h
new file mode 100644
index 0000000..11a8b92
--- /dev/null
+++ b/src/qca.h
@@ -0,0 +1,466 @@
+/*
+ * qca.h - Qt Cryptographic Architecture
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef TQCA_H
+#define TQCA_H
+
+#include<tqstring.h>
+#include<tqcstring.h>
+#include<tqdatetime.h>
+#include<tqmap.h>
+#include<tqptrlist.h>
+#include<tqobject.h>
+
+#ifdef Q_OS_WIN32
+#  ifndef TQCA_STATIC
+#    ifdef TQCA_MAKEDLL
+#      define TQCA_EXPORT __declspec(dllexport)
+#    else
+#      define TQCA_EXPORT __declspec(dllimport)
+#    endif
+#  endif
+#endif
+#ifndef TQCA_EXPORT
+#define TQCA_EXPORT
+#endif
+
+#ifdef Q_OS_WIN32
+#  ifdef TQCA_PLUGIN_DLL
+#    define TQCA_PLUGIN_EXPORT extern "C" __declspec(dllexport)
+#  else
+#    define TQCA_PLUGIN_EXPORT extern "C" __declspec(dllimport)
+#  endif
+#endif
+#ifndef TQCA_PLUGIN_EXPORT
+#define TQCA_PLUGIN_EXPORT extern "C"
+#endif
+
+class TQHostAddress;
+class TQStringList;
+
+class TQCAProvider;
+class TQCA_HashContext;
+class TQCA_CipherContext;
+class TQCA_CertContext;
+
+namespace TQCA
+{
+	enum {
+		CAP_SHA1      = 0x0001,
+		CAP_SHA256    = 0x0002,
+		CAP_MD5       = 0x0004,
+		CAP_BlowFish  = 0x0008,
+		CAP_TripleDES = 0x0010,
+		CAP_AES128    = 0x0020,
+		CAP_AES256    = 0x0040,
+		CAP_RSA       = 0x0080,
+		CAP_X509      = 0x0100,
+		CAP_TLS       = 0x0200,
+		CAP_SASL      = 0x0400
+	};
+
+	enum {
+		CBC = 0x0001,
+		CFB = 0x0002
+	};
+
+	enum {
+		Encrypt = 0x0001,
+		Decrypt = 0x0002
+	};
+
+	TQCA_EXPORT void init();
+	TQCA_EXPORT bool isSupported(int capabilities);
+	TQCA_EXPORT void insertProvider(TQCAProvider *);
+	TQCA_EXPORT void unloadAllPlugins();
+
+	TQCA_EXPORT TQString arrayToHex(const TQByteArray &);
+	TQCA_EXPORT TQByteArray hexToArray(const TQString &);
+
+	class TQCA_EXPORT Hash
+	{
+	public:
+		Hash(const Hash &);
+		Hash & operator=(const Hash &);
+		~Hash();
+
+		void clear();
+		void update(const TQByteArray &a);
+		TQByteArray final();
+
+	protected:
+		Hash(TQCA_HashContext *);
+
+	private:
+		class Private;
+		Private *d;
+	};
+
+	template <class T>
+	class TQCA_EXPORT HashStatic
+	{
+	public:
+		HashStatic<T>() {}
+
+		static TQByteArray hash(const TQByteArray &a)
+		{
+			T obj;
+			obj.update(a);
+			return obj.final();
+		}
+
+		static TQByteArray hash(const TQCString &cs)
+		{
+			TQByteArray a(cs.length());
+			memcpy(a.data(), cs.data(), a.size());
+			return hash(a);
+		}
+
+		static TQString hashToString(const TQByteArray &a)
+		{
+			return arrayToHex(hash(a));
+		}
+
+		static TQString hashToString(const TQCString &cs)
+		{
+			return arrayToHex(hash(cs));
+		}
+	};
+
+	class TQCA_EXPORT Cipher
+	{
+	public:
+		Cipher(const Cipher &);
+		Cipher & operator=(const Cipher &);
+		~Cipher();
+
+		TQByteArray dyn_generateKey(int size=-1) const;
+		TQByteArray dyn_generateIV() const;
+		void reset(int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad=true);
+		bool update(const TQByteArray &a);
+		TQByteArray final(bool *ok=0);
+
+	protected:
+		Cipher(TQCA_CipherContext *, int dir, int mode, const TQByteArray &key, const TQByteArray &iv, bool pad);
+
+	private:
+		class Private;
+		Private *d;
+	};
+
+	template <class T>
+	class TQCA_EXPORT CipherStatic
+	{
+	public:
+		CipherStatic<T>() {}
+
+		static TQByteArray generateKey(int size=-1)
+		{
+			T obj;
+			return obj.dyn_generateKey(size);
+		}
+
+		static TQByteArray generateIV()
+		{
+			T obj;
+			return obj.dyn_generateIV();
+		}
+	};
+
+	class TQCA_EXPORT SHA1 : public Hash, public HashStatic<SHA1>
+	{
+	public:
+		SHA1();
+	};
+
+	class TQCA_EXPORT SHA256 : public Hash, public HashStatic<SHA256>
+	{
+	public:
+		SHA256();
+	};
+
+	class TQCA_EXPORT MD5 : public Hash, public HashStatic<MD5>
+	{
+	public:
+		MD5();
+	};
+
+	class TQCA_EXPORT BlowFish : public Cipher, public CipherStatic<BlowFish>
+	{
+	public:
+		BlowFish(int dir=Encrypt, int mode=CBC, const TQByteArray &key=TQByteArray(), const TQByteArray &iv=TQByteArray(), bool pad=true);
+	};
+
+	class TQCA_EXPORT TripleDES : public Cipher, public CipherStatic<TripleDES>
+	{
+	public:
+		TripleDES(int dir=Encrypt, int mode=CBC, const TQByteArray &key=TQByteArray(), const TQByteArray &iv=TQByteArray(), bool pad=true);
+	};
+
+	class TQCA_EXPORT AES128 : public Cipher, public CipherStatic<AES128>
+	{
+	public:
+		AES128(int dir=Encrypt, int mode=CBC, const TQByteArray &key=TQByteArray(), const TQByteArray &iv=TQByteArray(), bool pad=true);
+	};
+
+	class TQCA_EXPORT AES256 : public Cipher, public CipherStatic<AES256>
+	{
+	public:
+		AES256(int dir=Encrypt, int mode=CBC, const TQByteArray &key=TQByteArray(), const TQByteArray &iv=TQByteArray(), bool pad=true);
+	};
+
+	class RSA;
+	class TQCA_EXPORT RSAKey
+	{
+	public:
+		RSAKey();
+		RSAKey(const RSAKey &from);
+		RSAKey & operator=(const RSAKey &from);
+		~RSAKey();
+
+		bool isNull() const;
+		bool havePublic() const;
+		bool havePrivate() const;
+
+		TQByteArray toDER(bool publicOnly=false) const;
+		bool fromDER(const TQByteArray &a);
+
+		TQString toPEM(bool publicOnly=false) const;
+		bool fromPEM(const TQString &);
+
+		// only call if you know what you are doing
+		bool fromNative(void *);
+
+	private:
+		class Private;
+		Private *d;
+
+		friend class RSA;
+		friend class TLS;
+		bool encrypt(const TQByteArray &a, TQByteArray *out, bool oaep) const;
+		bool decrypt(const TQByteArray &a, TQByteArray *out, bool oaep) const;
+		bool generate(unsigned int bits);
+	};
+
+	class TQCA_EXPORT RSA
+	{
+	public:
+		RSA();
+		~RSA();
+
+		RSAKey key() const;
+		void setKey(const RSAKey &);
+
+		bool encrypt(const TQByteArray &a, TQByteArray *out, bool oaep=false) const;
+		bool decrypt(const TQByteArray &a, TQByteArray *out, bool oaep=false) const;
+
+		static RSAKey generateKey(unsigned int bits);
+
+	private:
+		RSAKey v_key;
+	};
+
+	typedef TQMap<TQString, TQString> CertProperties;
+	class TQCA_EXPORT Cert
+	{
+	public:
+		Cert();
+		Cert(const Cert &);
+		Cert & operator=(const Cert &);
+		~Cert();
+
+		bool isNull() const;
+
+		TQString commonName() const;
+		TQString serialNumber() const;
+		TQString subjectString() const;
+		TQString issuerString() const;
+		CertProperties subject() const;
+		CertProperties issuer() const;
+		TQDateTime notBefore() const;
+		TQDateTime notAfter() const;
+
+		TQByteArray toDER() const;
+		bool fromDER(const TQByteArray &a);
+
+		TQString toPEM() const;
+		bool fromPEM(const TQString &);
+
+	private:
+		class Private;
+		Private *d;
+
+		friend class TLS;
+		void fromContext(TQCA_CertContext *);
+	};
+
+	class TQCA_EXPORT TLS : public TQObject
+	{
+		Q_OBJECT
+	public:
+		enum Validity {
+			NoCert,
+			Valid,
+			HostMismatch,
+			Rejected,
+			Untrusted,
+			SignatureFailed,
+			InvalidCA,
+			InvalidPurpose,
+			SelfSigned,
+			Revoked,
+			PathLengthExceeded,
+			Expired,
+			Unknown
+		};
+		enum Error { ErrHandshake, ErrCrypt };
+
+		TLS(TQObject *parent=0);
+		~TLS();
+
+		void setCertificate(const Cert &cert, const RSAKey &key);
+		void setCertificateStore(const TQPtrList<Cert> &store);  // note: store must persist
+
+		void reset();
+		bool startClient(const TQString &host="");
+		bool startServer();
+		void close();
+		bool isHandshaken() const;
+
+		// plain (application side)
+		void write(const TQByteArray &a);
+		TQByteArray read();
+
+		// encoded (socket side)
+		void writeIncoming(const TQByteArray &a);
+		TQByteArray readOutgoing();
+		TQByteArray readUnprocessed();
+
+		// cert related
+		const Cert & peerCertificate() const;
+		int certificateValidityResult() const;
+
+	signals:
+		void handshaken();
+		void readyRead();
+		void readyReadOutgoing(int plainBytes);
+		void closed();
+		void error(int);
+
+	private slots:
+		void update();
+
+	private:
+		class Private;
+		Private *d;
+	};
+
+	class TQCA_EXPORT SASL : public TQObject
+	{
+		Q_OBJECT
+	public:
+		enum Error { ErrAuth, ErrCrypt };
+		enum ErrorCond {
+			NoMech,
+			BadProto,
+			BadServ,
+			BadAuth,
+			NoAuthzid,
+			TooWeak,
+			NeedEncrypt,
+			Expired,
+			Disabled,
+			NoUser,
+			RemoteUnavail
+		};
+		SASL(TQObject *parent=0);
+		~SASL();
+
+		static void setAppName(const TQString &name);
+
+		void reset();
+		int errorCondition() const;
+
+		// options
+		void setAllowPlain(bool);
+		void setAllowAnonymous(bool);
+		void setAllowActiveVulnerable(bool);
+		void setAllowDictionaryVulnerable(bool);
+		void setRequireForwardSecrecy(bool);
+		void setRequirePassCredentials(bool);
+		void setRequireMutualAuth(bool);
+
+		void setMinimumSSF(int);
+		void setMaximumSSF(int);
+		void setExternalAuthID(const TQString &authid);
+		void setExternalSSF(int);
+
+		void setLocalAddr(const TQHostAddress &addr, TQ_UINT16 port);
+		void setRemoteAddr(const TQHostAddress &addr, TQ_UINT16 port);
+
+		// initialize
+		bool startClient(const TQString &service, const TQString &host, const TQStringList &mechlist, bool allowClientSendFirst=true);
+		bool startServer(const TQString &service, const TQString &host, const TQString &realm, TQStringList *mechlist);
+
+		// authentication
+		void putStep(const TQByteArray &stepData);
+		void putServerFirstStep(const TQString &mech);
+		void putServerFirstStep(const TQString &mech, const TQByteArray &clientInit);
+		void setUsername(const TQString &user);
+		void setAuthzid(const TQString &auth);
+		void setPassword(const TQString &pass);
+		void setRealm(const TQString &realm);
+		void continueAfterParams();
+		void continueAfterAuthCheck();
+
+		// security layer
+		int ssf() const;
+		void write(const TQByteArray &a);
+		TQByteArray read();
+		void writeIncoming(const TQByteArray &a);
+		TQByteArray readOutgoing();
+
+	signals:
+		// for authentication
+		void clientFirstStep(const TQString &mech, const TQByteArray *clientInit);
+		void nextStep(const TQByteArray &stepData);
+		void needParams(bool user, bool authzid, bool pass, bool realm);
+		void authCheck(const TQString &user, const TQString &authzid);
+		void authenticated();
+
+		// for security layer
+		void readyRead();
+		void readyReadOutgoing(int plainBytes);
+
+		// error
+		void error(int);
+
+	private slots:
+		void tryAgain();
+
+	private:
+		class Private;
+		Private *d;
+
+		void handleServerFirstStep(int r);
+	};
+};
+
+#endif
diff --git a/src/qcaprovider.h b/src/qcaprovider.h
new file mode 100644
index 0000000..1b8277b
--- /dev/null
+++ b/src/qcaprovider.h
@@ -0,0 +1,191 @@
+/*
+ * qcaprovider.h - QCA Plugin API
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef TQCAPROVIDER_H
+#define TQCAPROVIDER_H
+
+#include<tqglobal.h>
+#include<tqstring.h>
+#include<tqdatetime.h>
+#include<tqobject.h>
+#include<tqhostaddress.h>
+#include"qca.h"
+
+#define TQCA_PLUGIN_VERSION 1
+
+class TQCAProvider
+{
+public:
+	TQCAProvider() {}
+	virtual ~TQCAProvider() {}
+
+	virtual void init()=0;
+	virtual int qcaVersion() const=0;
+	virtual int capabilities() const=0;
+	virtual void *context(int cap)=0;
+};
+
+class TQCA_HashContext
+{
+public:
+	virtual ~TQCA_HashContext() {}
+
+	virtual TQCA_HashContext *clone()=0;
+	virtual void reset()=0;
+	virtual void update(const char *in, unsigned int len)=0;
+	virtual void final(TQByteArray *out)=0;
+};
+
+class TQCA_CipherContext
+{
+public:
+	virtual ~TQCA_CipherContext() {}
+
+	virtual TQCA_CipherContext *clone()=0;
+	virtual int keySize()=0;
+	virtual int blockSize()=0;
+	virtual bool generateKey(char *out, int keysize=-1)=0;
+	virtual bool generateIV(char *out)=0;
+
+	virtual bool setup(int dir, int mode, const char *key, int keysize, const char *iv, bool pad)=0;
+	virtual bool update(const char *in, unsigned int len)=0;
+	virtual bool final(TQByteArray *out)=0;
+};
+
+class TQCA_RSAKeyContext
+{
+public:
+	virtual ~TQCA_RSAKeyContext() {}
+
+	virtual TQCA_RSAKeyContext *clone() const=0;
+	virtual bool isNull() const=0;
+	virtual bool havePublic() const=0;
+	virtual bool havePrivate() const=0;
+	virtual bool createFromDER(const char *in, unsigned int len)=0;
+	virtual bool createFromPEM(const char *in, unsigned int len)=0;
+	virtual bool createFromNative(void *in)=0;
+	virtual bool generate(unsigned int bits)=0;
+	virtual bool toDER(TQByteArray *out, bool publicOnly)=0;
+	virtual bool toPEM(TQByteArray *out, bool publicOnly)=0;
+
+	virtual bool encrypt(const TQByteArray &in, TQByteArray *out, bool oaep)=0;
+	virtual bool decrypt(const TQByteArray &in, TQByteArray *out, bool oaep)=0;
+};
+
+struct TQCA_CertProperty
+{
+	TQString var;
+	TQString val;
+};
+
+class TQCA_CertContext
+{
+public:
+	virtual ~TQCA_CertContext() {}
+
+	virtual TQCA_CertContext *clone() const=0;
+	virtual bool isNull() const=0;
+	virtual bool createFromDER(const char *in, unsigned int len)=0;
+	virtual bool createFromPEM(const char *in, unsigned int len)=0;
+	virtual bool toDER(TQByteArray *out)=0;
+	virtual bool toPEM(TQByteArray *out)=0;
+
+	virtual TQString serialNumber() const=0;
+	virtual TQString subjectString() const=0;
+	virtual TQString issuerString() const=0;
+	virtual TQValueList<TQCA_CertProperty> subject() const=0;
+	virtual TQValueList<TQCA_CertProperty> issuer() const=0;
+	virtual TQDateTime notBefore() const=0;
+	virtual TQDateTime notAfter() const=0;
+	virtual bool matchesAddress(const TQString &realHost) const=0;
+};
+
+class TQCA_TLSContext
+{
+public:
+	enum Result { Success, Error, Continue };
+	virtual ~TQCA_TLSContext() {}
+
+	virtual void reset()=0;
+	virtual bool startClient(const TQPtrList<TQCA_CertContext> &store, const TQCA_CertContext &cert, const TQCA_RSAKeyContext &key)=0;
+	virtual bool startServer(const TQPtrList<TQCA_CertContext> &store, const TQCA_CertContext &cert, const TQCA_RSAKeyContext &key)=0;
+
+	virtual int handshake(const TQByteArray &in, TQByteArray *out)=0;
+	virtual int shutdown(const TQByteArray &in, TQByteArray *out)=0;
+	virtual bool encode(const TQByteArray &plain, TQByteArray *to_net, int *encoded)=0;
+	virtual bool decode(const TQByteArray &from_net, TQByteArray *plain, TQByteArray *to_net)=0;
+	virtual bool eof() const=0;
+	virtual TQByteArray unprocessed()=0;
+
+	virtual TQCA_CertContext *peerCertificate() const=0;
+	virtual int validityResult() const=0;
+};
+
+struct TQCA_SASLHostPort
+{
+	TQHostAddress addr;
+	Q_UINT16 port;
+};
+
+struct TQCA_SASLNeedParams
+{
+	bool user, authzid, pass, realm;
+};
+
+class TQCA_SASLContext
+{
+public:
+	enum Result { Success, Error, NeedParams, AuthCheck, Continue };
+	virtual ~TQCA_SASLContext() {}
+
+	// common
+	virtual void reset()=0;
+	virtual void setCoreProps(const TQString &service, const TQString &host, TQCA_SASLHostPort *local, TQCA_SASLHostPort *remote)=0;
+	virtual void setSecurityProps(bool noPlain, bool noActive, bool noDict, bool noAnon, bool reqForward, bool reqCreds, bool reqMutual, int ssfMin, int ssfMax, const TQString &_ext_authid, int _ext_ssf)=0;
+	virtual int security() const=0;
+	virtual int errorCond() const=0;
+
+	// init / first step
+	virtual bool clientStart(const TQStringList &mechlist)=0;
+	virtual int clientFirstStep(bool allowClientSendFirst)=0;
+	virtual bool serverStart(const TQString &realm, TQStringList *mechlist, const TQString &name)=0;
+	virtual int serverFirstStep(const TQString &mech, const TQByteArray *in)=0;
+
+	// get / set params
+	virtual TQCA_SASLNeedParams clientParamsNeeded() const=0;
+	virtual void setClientParams(const TQString *user, const TQString *authzid, const TQString *pass, const TQString *realm)=0;
+	virtual TQString username() const=0;
+	virtual TQString authzid() const=0;
+
+	// continue steps
+	virtual int nextStep(const TQByteArray &in)=0;
+	virtual int tryAgain()=0;
+
+	// results
+	virtual TQString mech() const=0;
+	virtual const TQByteArray *clientInit() const=0;
+	virtual TQByteArray result() const=0;
+
+	// security layer
+	virtual bool encode(const TQByteArray &in, TQByteArray *out)=0;
+	virtual bool decode(const TQByteArray &in, TQByteArray *out)=0;
+};
+
+#endif