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diff --git a/lang/cpp/src/encryptionresult.h b/lang/cpp/src/encryptionresult.h
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+/*
+  encryptionresult.h - wraps a gpgme sign result
+  Copyright (C) 2004 Klarälvdalens Datakonsult AB
+
+  This file is part of GPGME++.
+
+  GPGME++ is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  GPGME++ is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with GPGME++; see the file COPYING.LIB.  If not, write to the
+  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+*/
+
+#ifndef __GPGMEPP_ENCRYPTIONRESULT_H__
+#define __GPGMEPP_ENCRYPTIONRESULT_H__
+
+#include "gpgmefw.h"
+#include "result.h"
+#include "gpgmepp_export.h"
+
+#include <boost/shared_ptr.hpp>
+
+#include <vector>
+#include <iosfwd>
+
+namespace GpgME
+{
+
+class Error;
+class InvalidRecipient;
+
+class GPGMEPP_EXPORT EncryptionResult : public Result
+{
+public:
+    EncryptionResult();
+    EncryptionResult(gpgme_ctx_t ctx, int error);
+    EncryptionResult(gpgme_ctx_t ctx, const Error &error);
+    EncryptionResult(const Error &err);
+
+    const EncryptionResult &operator=(EncryptionResult other)
+    {
+        swap(other);
+        return *this;
+    }
+
+    void swap(EncryptionResult &other)
+    {
+        Result::swap(other);
+        using std::swap;
+        swap(this->d, other.d);
+    }
+
+    bool isNull() const;
+
+    unsigned int numInvalidRecipients() const;
+
+    InvalidRecipient invalidEncryptionKey(unsigned int index) const;
+    std::vector<InvalidRecipient> invalidEncryptionKeys() const;
+
+    class Private;
+private:
+    void init(gpgme_ctx_t ctx);
+    boost::shared_ptr<Private> d;
+};
+
+GPGMEPP_EXPORT std::ostream &operator<<(std::ostream &os, const EncryptionResult &result);
+
+class GPGMEPP_EXPORT InvalidRecipient
+{
+    friend class ::GpgME::EncryptionResult;
+    InvalidRecipient(const boost::shared_ptr<EncryptionResult::Private> &parent, unsigned int index);
+public:
+    InvalidRecipient();
+
+    const InvalidRecipient &operator=(InvalidRecipient other)
+    {
+        swap(other);
+        return *this;
+    }
+
+    void swap(InvalidRecipient &other)
+    {
+        using std::swap;
+        swap(this->d, other.d);
+    }
+
+    bool isNull() const;
+
+    const char *fingerprint() const;
+    Error reason() const;
+
+private:
+    boost::shared_ptr<EncryptionResult::Private> d;
+    unsigned int idx;
+};
+
+GPGMEPP_EXPORT std::ostream &operator<<(std::ostream &os, const InvalidRecipient &recipient);
+
+}
+
+GPGMEPP_MAKE_STD_SWAP_SPECIALIZATION(EncryptionResult)
+GPGMEPP_MAKE_STD_SWAP_SPECIALIZATION(InvalidRecipient)
+
+#endif // __GPGMEPP_ENCRYPTIONRESULT_H__