1 files changed, 85 insertions, 0 deletions
diff --git a/drm/libdrmframework/plugins/forward-lock/internal-format/common/FwdLockGlue.h b/drm/libdrmframework/plugins/forward-lock/internal-format/common/FwdLockGlue.h
new file mode 100644
index 0000000..f36f6ea
--- /dev/null
+++ b/drm/libdrmframework/plugins/forward-lock/internal-format/common/FwdLockGlue.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __FWDLOCKGLUE_H__
+#define __FWDLOCKGLUE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Generates the specified number of cryptographically secure random bytes.
+ *
+ * @param[out] pBuffer A reference to the buffer that should receive the random data.
+ * @param[in] numBytes The number of random bytes to generate.
+ *
+ * @return A Boolean value indicating whether the operation was successful.
+ */
+int FwdLockGlue_GetRandomNumber(void *pBuffer, size_t numBytes);
+
+/**
+ * Performs initialization of the key-encryption key. Should be called once during startup to
+ * facilitate encryption and decryption of session keys.
+ *
+ * @return A Boolean value indicating whether the operation was successful.
+ */
+int FwdLockGlue_InitializeKeyEncryption();
+
+/**
+ * Returns the length of the encrypted key, given the length of the plaintext key.
+ *
+ * @param[in] plaintextKeyLength The length in bytes of the plaintext key.
+ *
+ * @return The length in bytes of the encrypted key.
+ */
+size_t FwdLockGlue_GetEncryptedKeyLength(size_t plaintextKeyLength);
+
+/**
+ * Encrypts the given session key using a key-encryption key unique to this device.
+ *
+ * @param[in] pPlaintextKey A reference to the buffer containing the plaintext key.
+ * @param[in] plaintextKeyLength The length in bytes of the plaintext key.
+ * @param[out] pEncryptedKey A reference to the buffer containing the encrypted key.
+ * @param[in] encryptedKeyLength The length in bytes of the encrypted key.
+ *
+ * @return A Boolean value indicating whether the operation was successful.
+ */
+int FwdLockGlue_EncryptKey(const void *pPlaintextKey,
+                           size_t plaintextKeyLength,
+                           void *pEncryptedKey,
+                           size_t encryptedKeyLength);
+
+/**
+ * Decrypts the given session key using a key-encryption key unique to this device.
+ *
+ * @param[in] pEncryptedKey A reference to the buffer containing the encrypted key.
+ * @param[in] encryptedKeyLength The length in bytes of the encrypted key.
+ * @param[out] pDecryptedKey A reference to the buffer containing the decrypted key.
+ * @param[in] decryptedKeyLength The length in bytes of the decrypted key.
+ *
+ * @return A Boolean value indicating whether the operation was successful.
+ */
+int FwdLockGlue_DecryptKey(const void *pEncryptedKey,
+                           size_t encryptedKeyLength,
+                           void *pDecryptedKey,
+                           size_t decryptedKeyLength);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __FWDLOCKGLUE_H__