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diff --git a/third_party/libjingle/source/talk/base/sslidentity.h b/third_party/libjingle/source/talk/base/sslidentity.h
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+/*
+ * libjingle
+ * Copyright 2004--2008, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Handling of certificates and keypairs for SSLStreamAdapter's peer mode.
+
+#ifndef TALK_BASE_SSLIDENTITY_H__
+#define TALK_BASE_SSLIDENTITY_H__
+
+#include <string>
+
+namespace talk_base {
+
+// Abstract interface overridden by SSL library specific
+// implementations.
+
+// A somewhat opaque type used to encapsulate a certificate.
+// Wraps the SSL library's notion of a certificate, with reference counting.
+// The SSLCertificate object is pretty much immutable once created.
+// (The OpenSSL implementation only does reference counting and
+// possibly caching of intermediate results.)
+class SSLCertificate {
+ public:
+  // Parses and build a certificate from a PEM encoded string.
+  // Returns NULL on failure.
+  // The length of the string representation of the certificate is
+  // stored in *pem_length if it is non-NULL, and only if
+  // parsing was successful.
+  // Caller is responsible for freeing the returned object.
+  static SSLCertificate* FromPEMString(const std::string& pem_string,
+                                             int* pem_length);
+  virtual ~SSLCertificate() {}
+
+  // Returns a new SSLCertificate object instance wrapping the same
+  // underlying certificate.
+  // Caller is responsible for freeing the returned object.
+  virtual SSLCertificate* GetReference() = 0;
+
+  // Returns a PEM encoded string representation of the certificate.
+  virtual std::string ToPEMString() const = 0;
+};
+
+// Our identity in an SSL negotiation: a keypair and certificate (both
+// with the same public key).
+// This too is pretty much immutable once created.
+class SSLIdentity {
+ public:
+  // Generates an identity (keypair and self-signed certificate). If
+  // common_name is non-empty, it will be used for the certificate's
+  // subject and issuer name, otherwise a random string will be used.
+  // Returns NULL on failure.
+  // Caller is responsible for freeing the returned object.
+  static SSLIdentity* Generate(const std::string& common_name);
+
+  virtual ~SSLIdentity() {}
+
+  // Returns a new SSLIdentity object instance wrapping the same
+  // identity information.
+  // Caller is responsible for freeing the returned object.
+  virtual SSLIdentity* GetReference() = 0;
+
+  // Returns a temporary reference to the certificate.
+  virtual SSLCertificate& certificate() const = 0;
+};
+
+}  // namespace talk_base
+
+#endif  // TALK_BASE_SSLIDENTITY_H__