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/*
* Copyright 2020 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_BORINGSSL_CERTIFICATE_H_
#define RTC_BASE_BORINGSSL_CERTIFICATE_H_
#include <openssl/ossl_typ.h>
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include "absl/strings/string_view.h"
#include "rtc_base/buffer.h"
#include "rtc_base/ssl_certificate.h"
#include "rtc_base/ssl_identity.h"
namespace rtc {
class OpenSSLKeyPair;
// BoringSSLCertificate encapsulates a BoringSSL CRYPTO_BUFFER object holding a
// certificate, which is also reference counted inside the BoringSSL library.
// This offers binary size and memory improvements over the OpenSSL X509
// object.
class BoringSSLCertificate final : public SSLCertificate {
public:
explicit BoringSSLCertificate(bssl::UniquePtr<CRYPTO_BUFFER> cert_buffer);
static std::unique_ptr<BoringSSLCertificate> Generate(
OpenSSLKeyPair* key_pair,
const SSLIdentityParams& params);
static std::unique_ptr<BoringSSLCertificate> FromPEMString(
absl::string_view pem_string);
~BoringSSLCertificate() override;
BoringSSLCertificate(const BoringSSLCertificate&) = delete;
BoringSSLCertificate& operator=(const BoringSSLCertificate&) = delete;
std::unique_ptr<SSLCertificate> Clone() const override;
CRYPTO_BUFFER* cert_buffer() const { return cert_buffer_.get(); }
std::string ToPEMString() const override;
void ToDER(Buffer* der_buffer) const override;
bool operator==(const BoringSSLCertificate& other) const;
bool operator!=(const BoringSSLCertificate& other) const;
// Compute the digest of the certificate given `algorithm`.
bool ComputeDigest(absl::string_view algorithm,
unsigned char* digest,
size_t size,
size_t* length) const override;
// Compute the digest of a certificate as a CRYPTO_BUFFER.
static bool ComputeDigest(const CRYPTO_BUFFER* cert_buffer,
absl::string_view algorithm,
unsigned char* digest,
size_t size,
size_t* length);
bool GetSignatureDigestAlgorithm(std::string* algorithm) const override;
int64_t CertificateExpirationTime() const override;
private:
// A handle to the DER encoded certificate data.
bssl::UniquePtr<CRYPTO_BUFFER> cert_buffer_;
};
} // namespace rtc
#endif // RTC_BASE_BORINGSSL_CERTIFICATE_H_
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