wanproxy/crypto/crypto_encryption.cc

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2015-08-31 12:01:44 +00:00
/*
* Copyright (c) 2011-2012 Juli Mallett. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <common/registrar.h>
#include <crypto/crypto_encryption.h>
namespace {
struct MethodRegistrarKey;
typedef Registrar<MethodRegistrarKey, const CryptoEncryption::Method *> MethodRegistrar;
}
CryptoEncryption::Method::Method(const std::string& name)
: name_(name)
{
MethodRegistrar::instance()->enter(this);
}
const CryptoEncryption::Method *
CryptoEncryption::Method::method(CryptoEncryption::Cipher cipher)
{
std::set<const CryptoEncryption::Method *> method_set = MethodRegistrar::instance()->enumerate();
std::set<const CryptoEncryption::Method *>::const_iterator it;
for (it = method_set.begin(); it != method_set.end(); ++it) {
const CryptoEncryption::Method *m = *it;
std::set<CryptoEncryption::Cipher> cipher_set = m->ciphers();
if (cipher_set.find(cipher) == cipher_set.end())
continue;
return (*it);
}
ERROR("/crypto/encryption/method") << "Could not find a method for cipher: " << cipher;
return (NULL);
}
std::ostream&
operator<< (std::ostream& os, CryptoEncryption::Algorithm algorithm)
{
switch (algorithm) {
case CryptoEncryption::TripleDES:
return (os << "3DES");
case CryptoEncryption::AES128:
return (os << "AES128");
case CryptoEncryption::AES192:
return (os << "AES192");
case CryptoEncryption::AES256:
return (os << "AES256");
case CryptoEncryption::Blowfish:
return (os << "Blowfish");
case CryptoEncryption::CAST:
return (os << "CAST");
case CryptoEncryption::IDEA:
return (os << "IDEA");
case CryptoEncryption::RC4:
return (os << "RC4");
}
NOTREACHED("/crypto/encryption");
}
std::ostream&
operator<< (std::ostream& os, CryptoEncryption::Mode mode)
{
switch (mode) {
case CryptoEncryption::CBC:
return (os << "CBC");
case CryptoEncryption::CTR:
return (os << "CTR");
case CryptoEncryption::Stream:
return (os << "Stream");
}
NOTREACHED("/crypto/encryption");
}
std::ostream&
operator<< (std::ostream& os, CryptoEncryption::Cipher cipher)
{
return (os << cipher.first << "/" << cipher.second);
}