Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdenetwork@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 357 insertions, 0 deletions

diff --git a/kopete/protocols/jabber/libiris/cutestuff/util/cipher.cpp b/kopete/protocols/jabber/libiris/cutestuff/util/cipher.cpp
new file mode 100644
index 00000000..3e2f3a15
--- /dev/null
+++ b/kopete/protocols/jabber/libiris/cutestuff/util/cipher.cpp
@@ -0,0 +1,357 @@
+/*
+ * cipher.cpp - Simple wrapper to 3DES,AES128/256 CBC ciphers
+ * 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"cipher.h"
+
+#include<openssl/evp.h>
+#include<openssl/rsa.h>
+#include"bytestream.h"
+#include"qrandom.h"
+
+static bool lib_encryptArray(const EVP_CIPHER *type, const QByteArray &buf, const QByteArray &key, const QByteArray &iv, bool pad, QByteArray *out)
+{
+	QByteArray result(buf.size()+type->block_size);
+	int len;
+	EVP_CIPHER_CTX c;
+
+	unsigned char *ivp = NULL;
+	if(!iv.isEmpty())
+		ivp = (unsigned char *)iv.data();
+	EVP_CIPHER_CTX_init(&c);
+	//EVP_CIPHER_CTX_set_padding(&c, pad ? 1: 0);
+	if(!EVP_EncryptInit_ex(&c, type, NULL, (unsigned char *)key.data(), ivp))
+		return false;
+	if(!EVP_EncryptUpdate(&c, (unsigned char *)result.data(), &len, (unsigned char *)buf.data(), buf.size()))
+		return false;
+	result.resize(len);
+	if(pad) {
+		QByteArray last(type->block_size);
+		if(!EVP_EncryptFinal_ex(&c, (unsigned char *)last.data(), &len))
+			return false;
+		last.resize(len);
+		ByteStream::appendArray(&result, last);
+	}
+
+	memset(&c, 0, sizeof(EVP_CIPHER_CTX));
+	*out = result;
+	return true;
+}
+
+static bool lib_decryptArray(const EVP_CIPHER *type, const QByteArray &buf, const QByteArray &key, const QByteArray &iv, bool pad, QByteArray *out)
+{
+	QByteArray result(buf.size()+type->block_size);
+	int len;
+	EVP_CIPHER_CTX c;
+
+	unsigned char *ivp = NULL;
+	if(!iv.isEmpty())
+		ivp = (unsigned char *)iv.data();
+	EVP_CIPHER_CTX_init(&c);
+	//EVP_CIPHER_CTX_set_padding(&c, pad ? 1: 0);
+	if(!EVP_DecryptInit_ex(&c, type, NULL, (unsigned char *)key.data(), ivp))
+		return false;
+	if(!pad) {
+		if(!EVP_EncryptUpdate(&c, (unsigned char *)result.data(), &len, (unsigned char *)buf.data(), buf.size()))
+			return false;
+	}
+	else {
+		if(!EVP_DecryptUpdate(&c, (unsigned char *)result.data(), &len, (unsigned char *)buf.data(), buf.size()))
+			return false;
+	}
+	result.resize(len);
+	if(pad) {
+		QByteArray last(type->block_size);
+		if(!EVP_DecryptFinal_ex(&c, (unsigned char *)last.data(), &len))
+			return false;
+		last.resize(len);
+		ByteStream::appendArray(&result, last);
+	}
+
+	memset(&c, 0, sizeof(EVP_CIPHER_CTX));
+	*out = result;
+	return true;
+}
+
+static bool lib_generateKeyIV(const EVP_CIPHER *type, const QByteArray &data, const QByteArray &salt, QByteArray *key, QByteArray *iv)
+{
+	QByteArray k, i;
+	unsigned char *kp = 0;
+	unsigned char *ip = 0;
+	if(key) {
+		k.resize(type->key_len);
+		kp = (unsigned char *)k.data();
+	}
+	if(iv) {
+		i.resize(type->iv_len);
+		ip = (unsigned char *)i.data();
+	}
+	if(!EVP_BytesToKey(type, EVP_sha1(), (unsigned char *)salt.data(), (unsigned char *)data.data(), data.size(), 1, kp, ip))
+		return false;
+	if(key)
+		*key = k;
+	if(iv)
+		*iv = i;
+	return true;
+}
+
+static const EVP_CIPHER * typeToCIPHER(Cipher::Type t)
+{
+	if(t == Cipher::TripleDES)
+		return EVP_des_ede3_cbc();
+	else if(t == Cipher::AES_128)
+		return EVP_aes_128_cbc();
+	else if(t == Cipher::AES_256)
+		return EVP_aes_256_cbc();
+	else
+		return 0;
+}
+
+Cipher::Key Cipher::generateKey(Type t)
+{
+	Key k;
+	const EVP_CIPHER *type = typeToCIPHER(t);
+	if(!type)
+		return k;
+	QByteArray out;
+	if(!lib_generateKeyIV(type, QRandom::randomArray(128), QRandom::randomArray(2), &out, 0))
+		return k;
+	k.setType(t);
+	k.setData(out);
+	return k;
+}
+
+QByteArray Cipher::generateIV(Type t)
+{
+	const EVP_CIPHER *type = typeToCIPHER(t);
+	if(!type)
+		return QByteArray();
+	QByteArray out;
+	if(!lib_generateKeyIV(type, QCString("Get this man an iv!"), QByteArray(), 0, &out))
+		return QByteArray();
+	return out;
+}
+
+int Cipher::ivSize(Type t)
+{
+	const EVP_CIPHER *type = typeToCIPHER(t);
+	if(!type)
+		return -1;
+	return type->iv_len;
+}
+
+QByteArray Cipher::encrypt(const QByteArray &buf, const Key &key, const QByteArray &iv, bool pad, bool *ok)
+{
+	if(ok)
+		*ok = false;
+	const EVP_CIPHER *type = typeToCIPHER(key.type());
+	if(!type)
+		return QByteArray();
+	QByteArray out;
+	if(!lib_encryptArray(type, buf, key.data(), iv, pad, &out))
+		return QByteArray();
+
+	if(ok)
+		*ok = true;
+	return out;
+}
+
+QByteArray Cipher::decrypt(const QByteArray &buf, const Key &key, const QByteArray &iv, bool pad, bool *ok)
+{
+	if(ok)
+		*ok = false;
+	const EVP_CIPHER *type = typeToCIPHER(key.type());
+	if(!type)
+		return QByteArray();
+	QByteArray out;
+	if(!lib_decryptArray(type, buf, key.data(), iv, pad, &out))
+		return QByteArray();
+
+	if(ok)
+		*ok = true;
+	return out;
+}
+
+
+class RSAKey::Private
+{
+public:
+	Private() {}
+
+	RSA *rsa;
+	int ref;
+};
+
+RSAKey::RSAKey()
+{
+	d = 0;
+}
+
+RSAKey::RSAKey(const RSAKey &from)
+{
+	d = 0;
+	*this = from;
+}
+
+RSAKey & RSAKey::operator=(const RSAKey &from)
+{
+	free();
+
+	if(from.d) {
+		d = from.d;
+		++d->ref;
+	}
+
+	return *this;
+}
+
+RSAKey::~RSAKey()
+{
+	free();
+}
+
+bool RSAKey::isNull() const
+{
+	return d ? false: true;
+}
+
+void * RSAKey::data() const
+{
+	if(d)
+		return (void *)d->rsa;
+	else
+		return 0;
+}
+
+void RSAKey::setData(void *p)
+{
+	free();
+
+	if(p) {
+		d = new Private;
+		d->ref = 1;
+		d->rsa = (RSA *)p;
+	}
+}
+
+void RSAKey::free()
+{
+	if(!d)
+		return;
+
+	--d->ref;
+	if(d->ref <= 0) {
+		RSA_free(d->rsa);
+		delete d;
+	}
+	d = 0;
+}
+
+RSAKey generateRSAKey()
+{
+	RSA *rsa = RSA_generate_key(1024, RSA_F4, NULL, NULL);
+	RSAKey key;
+	if(rsa)
+		key.setData(rsa);
+	return key;
+}
+
+QByteArray encryptRSA(const QByteArray &buf, const RSAKey &key, bool *ok)
+{
+	if(ok)
+		*ok = false;
+
+	int size = RSA_size((RSA *)key.data());
+	int flen = buf.size();
+	if(flen >= size - 11)
+		flen = size - 11;
+	QByteArray result(size);
+	unsigned char *from = (unsigned char *)buf.data();
+	unsigned char *to = (unsigned char *)result.data();
+	int r = RSA_public_encrypt(flen, from, to, (RSA *)key.data(), RSA_PKCS1_PADDING);
+	if(r == -1)
+		return QByteArray();
+	result.resize(r);
+
+	if(ok)
+		*ok = true;
+	return result;
+}
+
+QByteArray decryptRSA(const QByteArray &buf, const RSAKey &key, bool *ok)
+{
+	if(ok)
+		*ok = false;
+
+	int size = RSA_size((RSA *)key.data());
+	int flen = buf.size();
+	QByteArray result(size);
+	unsigned char *from = (unsigned char *)buf.data();
+	unsigned char *to = (unsigned char *)result.data();
+	int r = RSA_private_decrypt(flen, from, to, (RSA *)key.data(), RSA_PKCS1_PADDING);
+	if(r == -1)
+		return QByteArray();
+	result.resize(r);
+
+	if(ok)
+		*ok = true;
+	return result;
+}
+
+QByteArray encryptRSA2(const QByteArray &buf, const RSAKey &key, bool *ok)
+{
+	if(ok)
+		*ok = false;
+
+	int size = RSA_size((RSA *)key.data());
+	int flen = buf.size();
+	if(flen >= size - 41)
+		flen = size - 41;
+	QByteArray result(size);
+	unsigned char *from = (unsigned char *)buf.data();
+	unsigned char *to = (unsigned char *)result.data();
+	int r = RSA_public_encrypt(flen, from, to, (RSA *)key.data(), RSA_PKCS1_OAEP_PADDING);
+	if(r == -1)
+		return QByteArray();
+	result.resize(r);
+
+	if(ok)
+		*ok = true;
+	return result;
+}
+
+QByteArray decryptRSA2(const QByteArray &buf, const RSAKey &key, bool *ok)
+{
+	if(ok)
+		*ok = false;
+
+	int size = RSA_size((RSA *)key.data());
+	int flen = buf.size();
+	QByteArray result(size);
+	unsigned char *from = (unsigned char *)buf.data();
+	unsigned char *to = (unsigned char *)result.data();
+	int r = RSA_private_decrypt(flen, from, to, (RSA *)key.data(), RSA_PKCS1_OAEP_PADDING);
+	if(r == -1)
+		return QByteArray();
+	result.resize(r);
+
+	if(ok)
+		*ok = true;
+	return result;
+}