Add license information.

.gitignore

@@ -5,3 +5,4 @@ obj/
 build/
 .gradle/
 local.properties
+gradle.properties

README.md

@@ -1,28 +1,61 @@
+# curve25519-java
 
-# DO NOT USE THIS YET
+A Java Curve25519 implementation that is backed by native code when available, and
+pure Java when a native library is not available.
 
-## Generating a Curve25519 keypair:
+## Installing
+
+To use on Android:
+
+```
+dependencies {
+  compile 'org.whispersystems:curve25519-android:(latest version number here)'
+}
+```
+
+To use from pure Java:
+
+```
+<dependency>
+  <groupId>org.whispersystems</groupId>
+  <artifactId>curve25519-java</artifactId>
+  <version>(latest version number here)</version>
+</dependency>
+```
+
+The Android artifact is an AAR that contains an NDK-backed native implementation, while
+the Java artifact is a JAR that only contains the pure-Java Curve25519 provider.
+
+## Using
+
+### Generating a Curve25519 keypair:
 
 ```
 SecureRandom      secureRandom = SecureRandom.getInstance("SHA1PRNG");
-Curve25519KeyPair keyPair      = Curve25519.generateKeyPair();
+Curve25519KeyPair keyPair      = Curve25519.generateKeyPair(secureRandom);
 ```
 
-## Calculating a shared secret:
+### Calculating a shared secret:
 
 ```
 byte[] sharedSecret = Curve25519.calculateAgreement(publicKey, privateKey);
 ```
 
-## Calculating a signature:
+### Calculating a signature:
 
 ```
 SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
 byte[]       signature    = Curve25519.calculateSignature(secureRandom, privateKey, message);
 ```
 
-## Verifying a signature:
+### Verifying a signature:
 
 ```
 boolean validSignature = Curve25519.verifySignature(publicKey, message, signature);
-```
+```
+
+## License
+
+Copyright 2015 Open Whisper Systems
+
+Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html

android/build.gradle

@@ -73,6 +73,14 @@ uploadArchives {
                 developerConnection 'scm:git@github.com:WhisperSystems/curve25519-java.git'
             }
 
+            licenses {
+                license {
+                    name 'GPLv3'
+                    url 'https://www.gnu.org/licenses/gpl-3.0.txt'
+                    distribution 'repo'
+                }
+            }
+
             developers {
                 developer {
                     name 'Trevor Perrin'
@@ -92,3 +100,4 @@ task installArchives(type: Upload) {
         }
     }
 }
+

build.gradle

@@ -1,2 +1,4 @@
-ext.version_number = "0.1.3"
-ext.group_info     = "org.whispersystems"
+subprojects {
+    ext.version_number = "0.1.3"
+    ext.group_info     = "org.whispersystems"
+}

java/build.gradle

@@ -42,6 +42,14 @@ uploadArchives {
                 developerConnection 'scm:git@github.com:WhisperSystems/curve25519-java.git'
             }
 
+            licenses {
+                license {
+                    name 'GPLv3'
+                    url 'https://www.gnu.org/licenses/gpl-3.0.txt'
+                    distribution 'repo'
+                }
+            }
+
             developers {
                 developer {
                     name 'Trevor Perrin'
@@ -61,3 +69,22 @@ task installArchives(type: Upload) {
         }
     }
 }
+
+
+task packageJavadoc(type: Jar, dependsOn: 'javadoc') {
+    from javadoc.destinationDir
+    classifier = 'javadoc'
+}
+
+task packageSources(type: Jar) {
+    from sourceSets.main.allSource
+    classifier = 'sources'
+}
+
+artifacts {
+    archives(packageJavadoc) {
+        type = 'javadoc'
+    }
+
+    archives packageSources
+}

java/src/main/java/org/whispersystems/curve25519/Curve25519.java

@@ -1,3 +1,19 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.whispersystems.curve25519;
 
 import java.security.SecureRandom;

java/src/main/java/org/whispersystems/curve25519/Curve25519KeyPair.java

@@ -1,3 +1,19 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.whispersystems.curve25519;
 
 /**

java/src/main/java/org/whispersystems/curve25519/Curve25519Provider.java

@@ -1,3 +1,19 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.whispersystems.curve25519;
 
 interface Curve25519Provider {

java/src/main/java/org/whispersystems/curve25519/JavaCurve25519Provider.java

@@ -1,3 +1,19 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.whispersystems.curve25519;
 
 import org.whispersystems.curve25519.java.curve_sigs;

java/src/main/java/org/whispersystems/curve25519/NativeCurve25519Provider.java

@@ -1,3 +1,19 @@
+/**
+ * Copyright (C) 2015 Open Whisper Systems
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package org.whispersystems.curve25519;
 
 class NativeCurve25519Provider implements Curve25519Provider {