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// Copyright (C) 2014-2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <cryptolink/cryptolink.h>
#include <cryptolink/crypto_rng.h>
#include <cryptolink/crypto_hash.h>
#include <cryptolink/crypto_hmac.h>
#include <openssl/crypto.h>
#include <openssl/rand.h>
namespace isc {
namespace cryptolink {
// For OpenSSL, we use the CryptoLink class object in RAII style
class CryptoLinkImpl {
};
CryptoLink::~CryptoLink() {
}
/// \brief OpenSSL implementation of RNG.
class RNGImpl : public RNG {
public:
RNGImpl() { }
~RNGImpl() { }
private:
std::vector<uint8_t> random(size_t len) {
std::vector<uint8_t> data;
if (len > 0) {
data.resize(len);
if (RAND_bytes(&data[0], len) != 1) {
isc_throw(isc::cryptolink::LibraryError,
"OpenSSL RAND_bytes() failed");
}
}
return (data);
}
};
void
CryptoLink::initialize(CryptoLink& c) {
if (!c.impl_) {
try {
c.impl_.reset(new CryptoLinkImpl());
} catch (const std::exception &ex) {
// Should never happen
isc_throw(InitializationError,
"Error during OpenSSL initialization:" << ex.what());
} catch (...) {
// Should never happen
isc_throw(InitializationError,
"Error during OpenSSL initialization");
}
}
if (!c.rng_) {
try {
c.rng_.reset(new RNGImpl());
} catch (const std::exception &ex) {
// Should never happen
isc_throw(InitializationError,
"Error during OpenSSL RNG initialization:" << ex.what());
} catch (...) {
// Should never happen
isc_throw(InitializationError,
"Error during OpenSSL RNG initialization");
}
}
}
std::string
CryptoLink::getVersion() {
return (SSLeay_version(SSLEAY_VERSION));
}
} // namespace cryptolink
} // namespace isc
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