CryptoLib: A C++ repository from dianfu

CryptoStream is a project which strips code related to CryptoInputStream/CryptoOutputStream from Hadoop to facilitate AES-NI based data encryption in other projects.

Features

Fast encryption/decryption
JNI-based implementation to achieve comparable performance to the native C++ version based on Openssl
Portable across various operating systems (currently only Linux); CryptoStream loads the library according to your machine environment (It looks system properties, os.name and os.arch).
Simple usage. Add the CryptoStream-(version).jar file to your classpath.
Apache License Version 2.0. Free for both commercial and non-commercial use.

Download

Release version: http://central.maven.org/maven2/com/intel/cryptostream/cryptostream/
Snapshot version (the latest beta version): https://oss.sonatype.org/content/repositories/snapshots/com/intel/cryptostream/cryptostream/

Using with Maven

CryptoStream is available from Maven's central repository: http://central.maven.org/maven2/com/intel/cryptostream/cryptostream

Add the following dependency to your pom.xml:

<dependency>
  <groupId>com.intel.cryptostream</groupId>
  <artifactId>cryptostream</artifactId>
  <version>0.0.1</version>
  <type>jar</type>
  <scope>compile</scope>
</dependency>

Using with sbt

libraryDependencies += "com.intel.cryptostream" % "cryptostream" % "0.0.1"

Usage

CryptoCodec codec = CryptoCodec.getInstance();
byte[] key = new byte[16];
byte[] iv = new byte[16];
int bufferSize = 4096;
String input = "hello world!";
byte[] decryptedData = new byte[1024];
// Encrypt
ByteArrayOutputStream os = new ByteArrayOutputStream();
CryptoOutputStream cos = new CryptoOutputStream(os, codec, bufferSize, key, iv);
cos.write(input.getBytes("UTF-8"));
cos.flush();
cos.close();

// Decrypt
CryptoInputStream cis = new CryptoInputStream(new ByteArrayInputStream(os.toByteArray()), codec, bufferSize, key, iv);
int decryptedLen = cis.read(decryptedData, 0, 1024);

Configuration

Currently, two crypto codec are supported: JceAesCtrCryptoCodec and OpensslAesCtrCryptoCodec, you can configure which codec to use as follows:

$ java -Dcryptostream.crypto.codec.classes.aes.ctr.nopadding=com.intel.cryptostream.OpensslAesCtrCryptoCodec Sample
$ java -Dcryptostream.crypto.codec.classes.aes.ctr.nopadding=com.intel.cryptostream.JceAesCtrCryptoCodec Sample

Building from the source code

Building from the source code is an option when your OS platform and CPU architecture is not supported. To build snappy-java, you need Git, JDK (1.6 or higher), g++ compiler (mingw in Windows) etc.

$ git clone https://github.com/dianfu/CryptoLib.git
$ cd CryptoLib
$ make

A file target/cryptostream-$(version).jar is the product additionally containing the native library built for your platform.

For developers

cryptostream uses sbt (simple build tool for Scala) as a build tool. Here is a simple usage

$ ./sbt            # enter sbt console
> ~test            # run tests upon source code change
> ~test-only *     # run tests that matches a given name pattern  
> publishM2        # publish jar to $HOME/.m2/repository
> package          # create jar file