Crypto Provider implementation start

7 files changed, 375 insertions, 0 deletions

diff --git a/OpenPGP-Keychain/src/com/android/crypto/CryptoError.aidl b/OpenPGP-Keychain/src/com/android/crypto/CryptoError.aidl
new file mode 100644
index 000000000..d1b941212
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/CryptoError.aidl
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+ 
+package com.android.crypto;
+
+// Declare CryptoError so AIDL can find it and knows that it implements the parcelable protocol.
+parcelable CryptoError;
\ No newline at end of file
diff --git a/OpenPGP-Keychain/src/com/android/crypto/CryptoError.java b/OpenPGP-Keychain/src/com/android/crypto/CryptoError.java
new file mode 100644
index 000000000..9540f4f68
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/CryptoError.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+
+package com.android.crypto;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+public class CryptoError implements Parcelable {
+    int errorId;
+    String message;
+
+    public CryptoError() {
+    }
+
+    public CryptoError(int errorId, String message) {
+        this.errorId = errorId;
+        this.message = message;
+    }
+
+    public CryptoError(CryptoError b) {
+        this.errorId = b.errorId;
+        this.message = b.message;
+    }
+
+    public int getErrorId() {
+        return errorId;
+    }
+
+    public void setErrorId(int errorId) {
+        this.errorId = errorId;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(errorId);
+        dest.writeString(message);
+    }
+
+    public static final Creator<CryptoError> CREATOR = new Creator<CryptoError>() {
+        public CryptoError createFromParcel(final Parcel source) {
+            CryptoError error = new CryptoError();
+            error.errorId = source.readInt();
+            error.message = source.readString();
+            return error;
+        }
+
+        public CryptoError[] newArray(final int size) {
+            return new CryptoError[size];
+        }
+    };
+}
diff --git a/OpenPGP-Keychain/src/com/android/crypto/CryptoServiceConnection.java b/OpenPGP-Keychain/src/com/android/crypto/CryptoServiceConnection.java
new file mode 100644
index 000000000..4d659d344
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/CryptoServiceConnection.java
@@ -0,0 +1,73 @@
+package com.android.crypto;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.IBinder;
+import android.util.Log;
+
+public class CryptoServiceConnection {
+    private Context mApplicationContext;
+
+    private ICryptoService mService;
+    private boolean bound;
+    private String cryptoProviderPackageName;
+
+    private static final String TAG = "CryptoConnection";
+
+    public CryptoServiceConnection(Context context, String cryptoProviderPackageName) {
+        mApplicationContext = context.getApplicationContext();
+        this.cryptoProviderPackageName = cryptoProviderPackageName;
+    }
+
+    public ICryptoService getService() {
+        return mService;
+    }
+
+    private ServiceConnection mCryptoServiceConnection = new ServiceConnection() {
+        public void onServiceConnected(ComponentName name, IBinder service) {
+            mService = ICryptoService.Stub.asInterface(service);
+            Log.d(TAG, "connected to service");
+            bound = true;
+        }
+
+        public void onServiceDisconnected(ComponentName name) {
+            mService = null;
+            Log.d(TAG, "disconnected from service");
+            bound = false;
+        }
+    };
+
+    /**
+     * If not already bound, bind!
+     * 
+     * @return
+     */
+    public boolean bindToService() {
+        if (mService == null && !bound) { // if not already connected
+            try {
+                Log.d(TAG, "not bound yet");
+
+                Intent serviceIntent = new Intent();
+                serviceIntent.setAction("com.android.crypto.ICryptoService");
+                serviceIntent.setPackage(cryptoProviderPackageName); // TODO: test
+                mApplicationContext.bindService(serviceIntent, mCryptoServiceConnection,
+                        Context.BIND_AUTO_CREATE);
+
+                return true;
+            } catch (Exception e) {
+                Log.d(TAG, "Exception", e);
+                return false;
+            }
+        } else { // already connected
+            Log.d(TAG, "already bound... ");
+            return true;
+        }
+    }
+
+    public void unbindFromService() {
+        mApplicationContext.unbindService(mCryptoServiceConnection);
+    }
+
+}
diff --git a/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.aidl b/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.aidl
new file mode 100644
index 000000000..21862c497
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.aidl
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+ 
+package com.android.crypto;
+
+// Declare CryptoSignatureResult so AIDL can find it and knows that it implements the parcelable protocol.
+parcelable CryptoSignatureResult;
\ No newline at end of file
diff --git a/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.java b/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.java
new file mode 100644
index 000000000..87f5f43b5
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/CryptoSignatureResult.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+
+package com.android.crypto;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+public class CryptoSignatureResult implements Parcelable {
+    String signatureUserId;
+
+    boolean signature;
+    boolean signatureSuccess;
+    boolean signatureUnknown;
+
+    public CryptoSignatureResult() {
+
+    }
+
+    public CryptoSignatureResult(String signatureUserId, boolean signature,
+            boolean signatureSuccess, boolean signatureUnknown) {
+        this.signatureUserId = signatureUserId;
+
+        this.signature = signature;
+        this.signatureSuccess = signatureSuccess;
+        this.signatureUnknown = signatureUnknown;
+    }
+
+    public CryptoSignatureResult(CryptoSignatureResult b) {
+        this.signatureUserId = b.signatureUserId;
+
+        this.signature = b.signature;
+        this.signatureSuccess = b.signatureSuccess;
+        this.signatureUnknown = b.signatureUnknown;
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(signatureUserId);
+
+        dest.writeByte((byte) (signature ? 1 : 0));
+        dest.writeByte((byte) (signatureSuccess ? 1 : 0));
+        dest.writeByte((byte) (signatureUnknown ? 1 : 0));
+    }
+
+    public static final Creator<CryptoSignatureResult> CREATOR = new Creator<CryptoSignatureResult>() {
+        public CryptoSignatureResult createFromParcel(final Parcel source) {
+            CryptoSignatureResult vr = new CryptoSignatureResult();
+            vr.signatureUserId = source.readString();
+            vr.signature = source.readByte() == 1;
+            vr.signatureSuccess = source.readByte() == 1;
+            vr.signatureUnknown = source.readByte() == 1;
+            return vr;
+        }
+
+        public CryptoSignatureResult[] newArray(final int size) {
+            return new CryptoSignatureResult[size];
+        }
+    };
+}
diff --git a/OpenPGP-Keychain/src/com/android/crypto/ICryptoCallback.aidl b/OpenPGP-Keychain/src/com/android/crypto/ICryptoCallback.aidl
new file mode 100644
index 000000000..af6587c04
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/ICryptoCallback.aidl
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+
+package com.android.crypto;
+
+import com.android.crypto.CryptoSignatureResult;
+import com.android.crypto.CryptoError;
+
+interface ICryptoCallback {
+
+    oneway void onEncryptSignSuccess(in byte[] outputBytes);
+    
+    oneway void onDecryptVerifySuccess(in byte[] outputBytes, in CryptoSignatureResult signatureResult);
+
+
+    oneway void onError(in CryptoError error);
+    
+    oneway void onActivityRequired(in Intent intent);
+}
\ No newline at end of file
diff --git a/OpenPGP-Keychain/src/com/android/crypto/ICryptoService.aidl b/OpenPGP-Keychain/src/com/android/crypto/ICryptoService.aidl
new file mode 100644
index 000000000..05baa16e0
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/android/crypto/ICryptoService.aidl
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * 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.
+ */
+ 
+package com.android.crypto;
+
+import com.android.crypto.ICryptoCallback;
+
+/**
+ * All methods are oneway, which means they are asynchronous and non-blocking.
+ * Results are returned to the callback, which has to be implemented on client side.
+ */
+interface ICryptoService {
+       
+    /**
+     * Encrypt
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param encryptionKeyIds
+     *            Ids of public keys used for encryption
+     * @param handler
+     *            Results are returned to this Handler after successful encryption
+     */
+    oneway void encrypt(in byte[] inputBytes, in String[] encryptionUserIds, in ICryptoCallback callback);
+    
+    /**
+     * Encrypt and sign
+     *
+     * 
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param signatureKeyId
+     *            Key id of key to sign with
+     * @param handler
+     *            Results are returned to this Handler after successful encryption and signing
+     */
+    oneway void encryptAndSign(in byte[] inputBytes, in String[] encryptionUserIds, String signatureUserId, in ICryptoCallback callback);
+    
+    /**
+     * Sign
+     *
+     * 
+     * 
+     * @param inputBytes
+     *            Byte array you want to encrypt
+     * @param signatureId
+     *            
+     * @param handler
+     *            Results are returned to this Handler after successful encryption and signing
+     */
+    oneway void sign(in byte[] inputBytes, String signatureUserId, in ICryptoCallback callback);
+    
+    /**
+     * Decrypts and verifies given input bytes. If no signature is present this method
+     * will only decrypt.
+     * 
+     * @param inputBytes
+     *            Byte array you want to decrypt and verify
+     * @param handler
+     *            Handler where to return results to after successful encryption
+     */
+    oneway void decryptAndVerify(in byte[] inputBytes, in ICryptoCallback callback);    
+    
+}
\ No newline at end of file