blob: cc056e49efea94046e42feef7409556d4bb4863b [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/dsa.h>
#include <openssl/ec.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/rsa.h>
#include "base/memory/scoped_ptr.h"
namespace crypto {
// Simplistic helper that wraps a call to a deleter function. In a C++11 world,
// this would be std::function<>. An alternative would be to re-use
// base::internal::RunnableAdapter<>, but that's far too heavy weight.
template <typename Type, void (*Destroyer)(Type*)>
struct OpenSSLDestroyer {
typedef void AllowSelfReset;
void operator()(Type* ptr) const { Destroyer(ptr); }
template <typename PointerType, void (*Destroyer)(PointerType*)>
struct ScopedOpenSSL {
typedef scoped_ptr<PointerType, OpenSSLDestroyer<PointerType, Destroyer> >
struct OpenSSLFree {
void operator()(uint8_t* ptr) const { OPENSSL_free(ptr); }
// Several typedefs are provided for crypto-specific primitives, for
// short-hand and prevalence. Note that OpenSSL types related to X.509 are
// intentionally not included, as crypto/ does not generally deal with
// certificates or PKI.
typedef ScopedOpenSSL<BIGNUM, BN_free>::Type ScopedBIGNUM;
typedef ScopedOpenSSL<EC_KEY, EC_KEY_free>::Type ScopedEC_KEY;
typedef ScopedOpenSSL<BIO, BIO_free_all>::Type ScopedBIO;
typedef ScopedOpenSSL<DSA, DSA_free>::Type ScopedDSA;
typedef ScopedOpenSSL<ECDSA_SIG, ECDSA_SIG_free>::Type ScopedECDSA_SIG;
typedef ScopedOpenSSL<EC_KEY, EC_KEY_free>::Type ScopedEC_KEY;
typedef ScopedOpenSSL<EVP_MD_CTX, EVP_MD_CTX_destroy>::Type ScopedEVP_MD_CTX;
typedef ScopedOpenSSL<EVP_PKEY, EVP_PKEY_free>::Type ScopedEVP_PKEY;
typedef ScopedOpenSSL<EVP_PKEY_CTX, EVP_PKEY_CTX_free>::Type ScopedEVP_PKEY_CTX;
typedef ScopedOpenSSL<RSA, RSA_free>::Type ScopedRSA;
// The bytes must have been allocated with OPENSSL_malloc.
typedef scoped_ptr<uint8_t, OpenSSLFree> ScopedOpenSSLBytes;
} // namespace crypto