93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef MEDIA_BASE_REQUEST_SIGNER_H_
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#define MEDIA_BASE_REQUEST_SIGNER_H_
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#include <string>
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#include "packager/base/memory/scoped_ptr.h"
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namespace edash_packager {
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namespace media {
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class AesCbcEncryptor;
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class RsaPrivateKey;
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/// Abstract class used for signature generation.
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class RequestSigner {
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public:
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virtual ~RequestSigner();
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/// Generate signature for the input message.
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/// @param signature should not be NULL.
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/// @return true on success, false otherwise.
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virtual bool GenerateSignature(const std::string& message,
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std::string* signature) = 0;
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const std::string& signer_name() const { return signer_name_; }
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protected:
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explicit RequestSigner(const std::string& signer_name);
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private:
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std::string signer_name_;
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DISALLOW_COPY_AND_ASSIGN(RequestSigner);
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};
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/// AesRequestSigner uses AES-CBC signing.
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class AesRequestSigner : public RequestSigner {
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public:
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~AesRequestSigner() override;
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/// Create an AesSigner object from key and iv in hex.
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/// @return The created AesRequestSigner object on success, NULL otherwise.
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static AesRequestSigner* CreateSigner(const std::string& signer_name,
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const std::string& aes_key_hex,
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const std::string& iv_hex);
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/// RequestSigner implementation override.
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bool GenerateSignature(const std::string& message,
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std::string* signature) override;
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private:
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AesRequestSigner(const std::string& signer_name,
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scoped_ptr<AesCbcEncryptor> encryptor);
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scoped_ptr<AesCbcEncryptor> aes_cbc_encryptor_;
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DISALLOW_COPY_AND_ASSIGN(AesRequestSigner);
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};
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/// RsaRequestSigner uses RSA-PSS signing.
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class RsaRequestSigner : public RequestSigner {
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public:
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~RsaRequestSigner() override;
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/// Create an RsaSigner object using a DER encoded PKCS#1 RSAPrivateKey.
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/// @return The created RsaRequestSigner object on success, NULL otherwise.
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static RsaRequestSigner* CreateSigner(const std::string& signer_name,
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const std::string& pkcs1_rsa_key);
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/// RequestSigner implementation override.
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bool GenerateSignature(const std::string& message,
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std::string* signature) override;
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private:
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RsaRequestSigner(const std::string& signer_name,
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scoped_ptr<RsaPrivateKey> rsa_private_key);
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scoped_ptr<RsaPrivateKey> rsa_private_key_;
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DISALLOW_COPY_AND_ASSIGN(RsaRequestSigner);
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};
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} // namespace media
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} // namespace edash_packager
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#endif // MEDIA_BASE_REQUEST_SIGNER_H_
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