diff --git a/drm/libmediadrm/Crypto.cpp b/drm/libmediadrm/Crypto.cpp
new file mode 100644
index 0000000..79633cb
--- /dev/null
+++ b/drm/libmediadrm/Crypto.cpp
@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "Crypto"
+#include <utils/Log.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+#include <binder/IMemory.h>
+#include <media/Crypto.h>
+#include <media/hardware/CryptoAPI.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AString.h>
+#include <media/stagefright/foundation/hexdump.h>
+#include <media/stagefright/MediaErrors.h>
+
+namespace android {
+
+KeyedVector<Vector<uint8_t>, String8> Crypto::mUUIDToLibraryPathMap;
+KeyedVector<String8, wp<SharedLibrary> > Crypto::mLibraryPathToOpenLibraryMap;
+Mutex Crypto::mMapLock;
+
+static bool operator<(const Vector<uint8_t> &lhs, const Vector<uint8_t> &rhs) {
+    if (lhs.size() < rhs.size()) {
+        return true;
+    } else if (lhs.size() > rhs.size()) {
+        return false;
+    }
+
+    return memcmp((void *)lhs.array(), (void *)rhs.array(), rhs.size()) < 0;
+}
+
+Crypto::Crypto()
+    : mInitCheck(NO_INIT),
+      mFactory(NULL),
+      mPlugin(NULL) {
+}
+
+Crypto::~Crypto() {
+    delete mPlugin;
+    mPlugin = NULL;
+    closeFactory();
+}
+
+void Crypto::closeFactory() {
+    delete mFactory;
+    mFactory = NULL;
+    mLibrary.clear();
+}
+
+status_t Crypto::initCheck() const {
+    return mInitCheck;
+}
+
+/*
+ * Search the plugins directory for a plugin that supports the scheme
+ * specified by uuid
+ *
+ * If found:
+ *    mLibrary holds a strong pointer to the dlopen'd library
+ *    mFactory is set to the library's factory method
+ *    mInitCheck is set to OK
+ *
+ * If not found:
+ *    mLibrary is cleared and mFactory are set to NULL
+ *    mInitCheck is set to an error (!OK)
+ */
+void Crypto::findFactoryForScheme(const uint8_t uuid[16]) {
+
+    closeFactory();
+
+    // lock static maps
+    Mutex::Autolock autoLock(mMapLock);
+
+    // first check cache
+    Vector<uint8_t> uuidVector;
+    uuidVector.appendArray(uuid, sizeof(uuid[0]) * 16);
+    ssize_t index = mUUIDToLibraryPathMap.indexOfKey(uuidVector);
+    if (index >= 0) {
+        if (loadLibraryForScheme(mUUIDToLibraryPathMap[index], uuid)) {
+            mInitCheck = OK;
+            return;
+        } else {
+            ALOGE("Failed to load from cached library path!");
+            mInitCheck = ERROR_UNSUPPORTED;
+            return;
+        }
+    }
+
+    // no luck, have to search
+    String8 dirPath("/vendor/lib/mediadrm");
+    String8 pluginPath;
+
+    DIR* pDir = opendir(dirPath.string());
+    if (pDir) {
+        struct dirent* pEntry;
+        while ((pEntry = readdir(pDir))) {
+
+            pluginPath = dirPath + "/" + pEntry->d_name;
+
+            if (pluginPath.getPathExtension() == ".so") {
+
+                if (loadLibraryForScheme(pluginPath, uuid)) {
+                    mUUIDToLibraryPathMap.add(uuidVector, pluginPath);
+                    mInitCheck = OK;
+                    closedir(pDir);
+                    return;
+                }
+            }
+        }
+
+        closedir(pDir);
+    }
+
+    // try the legacy libdrmdecrypt.so
+    pluginPath = "libdrmdecrypt.so";
+    if (loadLibraryForScheme(pluginPath, uuid)) {
+        mUUIDToLibraryPathMap.add(uuidVector, pluginPath);
+        mInitCheck = OK;
+        return;
+    }
+
+    mInitCheck = ERROR_UNSUPPORTED;
+}
+
+bool Crypto::loadLibraryForScheme(const String8 &path, const uint8_t uuid[16]) {
+
+    // get strong pointer to open shared library
+    ssize_t index = mLibraryPathToOpenLibraryMap.indexOfKey(path);
+    if (index >= 0) {
+        mLibrary = mLibraryPathToOpenLibraryMap[index].promote();
+    } else {
+        index = mLibraryPathToOpenLibraryMap.add(path, NULL);
+    }
+
+    if (!mLibrary.get()) {
+        mLibrary = new SharedLibrary(path);
+        if (!*mLibrary) {
+            ALOGE("loadLibraryForScheme failed:%s", mLibrary->lastError());
+            return false;
+        }
+
+        mLibraryPathToOpenLibraryMap.replaceValueAt(index, mLibrary);
+    }
+
+    typedef CryptoFactory *(*CreateCryptoFactoryFunc)();
+
+    CreateCryptoFactoryFunc createCryptoFactory =
+        (CreateCryptoFactoryFunc)mLibrary->lookup("createCryptoFactory");
+
+    if (createCryptoFactory == NULL ||
+        (mFactory = createCryptoFactory()) == NULL ||
+        !mFactory->isCryptoSchemeSupported(uuid)) {
+        ALOGE("createCryptoFactory failed:%s", mLibrary->lastError());
+        closeFactory();
+        return false;
+    }
+    return true;
+}
+
+bool Crypto::isCryptoSchemeSupported(const uint8_t uuid[16]) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mFactory && mFactory->isCryptoSchemeSupported(uuid)) {
+        return true;
+    }
+
+    findFactoryForScheme(uuid);
+    return (mInitCheck == OK);
+}
+
+status_t Crypto::createPlugin(
+        const uint8_t uuid[16], const void *data, size_t size) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mPlugin != NULL) {
+        return -EINVAL;
+    }
+
+    if (!mFactory || !mFactory->isCryptoSchemeSupported(uuid)) {
+        findFactoryForScheme(uuid);
+    }
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    return mFactory->createPlugin(uuid, data, size, &mPlugin);
+}
+
+status_t Crypto::destroyPlugin() {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    if (mPlugin == NULL) {
+        return -EINVAL;
+    }
+
+    delete mPlugin;
+    mPlugin = NULL;
+
+    return OK;
+}
+
+bool Crypto::requiresSecureDecoderComponent(const char *mime) const {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    if (mPlugin == NULL) {
+        return -EINVAL;
+    }
+
+    return mPlugin->requiresSecureDecoderComponent(mime);
+}
+
+ssize_t Crypto::decrypt(
+        DestinationType dstType,
+        const uint8_t key[16],
+        const uint8_t iv[16],
+        CryptoPlugin::Mode mode,
+        const CryptoPlugin::Pattern &pattern,
+        const sp<IMemory> &sharedBuffer, size_t offset,
+        const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
+        void *dstPtr,
+        AString *errorDetailMsg) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck != OK) {
+        return mInitCheck;
+    }
+
+    if (mPlugin == NULL) {
+        return -EINVAL;
+    }
+
+    const void *srcPtr = static_cast<uint8_t *>(sharedBuffer->pointer()) + offset;
+
+    return mPlugin->decrypt(
+            dstType != kDestinationTypeVmPointer,
+            key, iv, mode, pattern, srcPtr, subSamples, numSubSamples, dstPtr,
+            errorDetailMsg);
+}
+
+void Crypto::notifyResolution(uint32_t width, uint32_t height) {
+    Mutex::Autolock autoLock(mLock);
+
+    if (mInitCheck == OK && mPlugin != NULL) {
+        mPlugin->notifyResolution(width, height);
+    }
+}
+
+status_t Crypto::setMediaDrmSession(const Vector<uint8_t> &sessionId) {
+    Mutex::Autolock autoLock(mLock);
+
+    status_t result = NO_INIT;
+    if (mInitCheck == OK && mPlugin != NULL) {
+        result = mPlugin->setMediaDrmSession(sessionId);
+    }
+    return result;
+}
+
+}  // namespace android