org.apache.spark.security

Class CryptoStreamUtils

Object

org.apache.spark.security.CryptoStreamUtils

public class CryptoStreamUtils
extends Object

A util class for manipulating IO encryption and decryption streams.

Constructor Summary

Constructors

Constructor and Description
CryptoStreamUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static String	COMMONS_CRYPTO_CONF_PREFIX()
static java.io.InputStream	createCryptoInputStream(java.io.InputStream is, SparkConf sparkConf, byte[] key) Helper method to wrap InputStream with CryptoInputStream for decryption.
static java.io.OutputStream	createCryptoOutputStream(java.io.OutputStream os, SparkConf sparkConf, byte[] key) Helper method to wrap OutputStream with CryptoOutputStream for encryption.
static byte[]	createKey(SparkConf conf) Creates a new encryption key.
static int	IV_LENGTH_IN_BYTES()
static String	SPARK_IO_ENCRYPTION_COMMONS_CONFIG_PREFIX()
static java.util.Properties	toCryptoConf(SparkConf conf) Get Commons-crypto configurations from Spark configurations identified by prefix.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CryptoStreamUtils

public CryptoStreamUtils()

Method Detail

IV_LENGTH_IN_BYTES

public static int IV_LENGTH_IN_BYTES()

SPARK_IO_ENCRYPTION_COMMONS_CONFIG_PREFIX

public static String SPARK_IO_ENCRYPTION_COMMONS_CONFIG_PREFIX()

COMMONS_CRYPTO_CONF_PREFIX

public static String COMMONS_CRYPTO_CONF_PREFIX()

createCryptoOutputStream

public static java.io.OutputStream createCryptoOutputStream(java.io.OutputStream os,
                                            SparkConf sparkConf,
                                            byte[] key)

Helper method to wrap OutputStream with CryptoOutputStream for encryption.

Parameters:

os - (undocumented)

sparkConf - (undocumented)

key - (undocumented)

Returns:

(undocumented)

createCryptoInputStream

public static java.io.InputStream createCryptoInputStream(java.io.InputStream is,
                                          SparkConf sparkConf,
                                          byte[] key)

Helper method to wrap InputStream with CryptoInputStream for decryption.

Parameters:

is - (undocumented)

sparkConf - (undocumented)

key - (undocumented)

Returns:

(undocumented)

toCryptoConf

public static java.util.Properties toCryptoConf(SparkConf conf)

Get Commons-crypto configurations from Spark configurations identified by prefix.

Parameters:

conf - (undocumented)

Returns:

(undocumented)

createKey

public static byte[] createKey(SparkConf conf)

Creates a new encryption key.

Parameters:

conf - (undocumented)

Returns:

(undocumented)