Add net/android/keystore.h

net/android/keystore.h

+// Copyright (c) 2013 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.
+
+#ifndef NET_ANDROID_KEYSTORE_H
+#define NET_ANDROID_KEYSTORE_H
+
+#include <jni.h>
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/string_piece.h"
+#include "net/base/net_export.h"
+#include "net/base/ssl_client_cert_type.h"
+
+// Avoid including OpenSSL headers here.
+typedef struct evp_pkey_st EVP_PKEY;
+
+// Misc classes to access the Android platform KeyStore.
+
+namespace net {
+namespace android {
+
+// Define a list of constants describing private key types. The
+// values are shared with Java through org.chromium.net.PrivateKeyType.
+// Example: PRIVATE_KEY_TYPE_RSA.
+enum PrivateKeyType {
+#define DEFINE_PRIVATE_KEY_TYPE(name,value)  PRIVATE_KEY_TYPE_ ## name = value,
+#include "net/android/private_key_type_list.h"
+#undef DEFINE_PRIVATE_KEY_TYPE
+};
+
+// Compute the signature of a given message, using a private key.
+// This is used to implement OpenSSL's client certificate signing
+// callback, so must end up implementing the same thing than

[agl, 2013/01/30 14:28:53]

s/than/as/

[digit1, 2013/01/31 17:44:30]

Done.

+// RSA_sign() / DSA_sign() / ECDSA_sign(), depending on the key
+// type.
+//
+// |private_key| is a JNI reference for the private key.
+// |message| is the input message.

[agl, 2013/01/30 14:28:53]

ditto with the comment around |message| - prehashed? pre-PKCS#1 encoded?

[digit1, 2013/01/31 17:44:30]

I've clarified the comment. Thanks.

+// |signature| will receive the signature on success.
+// Returns true on success, false on failure.
+//
+bool SignWithPrivateKey(
+    jobject private_key,
+    const base::StringPiece& message,
+    std::vector<uint8>* signature);
+
+
+// Return the PrivateKeyType of a given private key.
+// |private_key| is a JNI reference for the private key.
+// Returns a PrivateKeyType, while will be CLIENT_CERT_INVALID_TYPE
+// on error.
+PrivateKeyType GetPrivateKeyType(jobject private_key);
+
+// Returns a handle to the system EVP_PKEY object used to back a given
+// private_key object. This must *only* be used for RSA private keys
+// on Android < 4.2. Technically, this is only guaranteed to work if
+// the system image contains a vanilla implementation of the Java
+// API frameworks based on Harmony + OpenSSL.
+//
+// |private_key| is a JNI reference for the private key.
+// Returns an EVP_PKEY* handle, or NULL in case of error.
+//
+// Note: Despite its name and return type, this function doesn't know
+//       anything about OpenSSL, it just type-casts a system pointer that
+//       is passed as an int through JNI. As such, it never increments
+//       the returned key's reference count.
+EVP_PKEY* GetOpenSSLSystemHandleForPrivateKey(jobject private_key);
+
+// Register JNI methods
+NET_EXPORT bool RegisterKeyStore(JNIEnv* env);
+
+}  // namespace android
+}  // namespace net
+
+#endif  // NET_ANDROID_KEYSTORE_H