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java.lang.Object org.apache.hadoop.mapreduce.CryptoUtils
@InterfaceAudience.Private @InterfaceStability.Unstable public class CryptoUtils
This class provides utilities to make it easier to work with Cryptographic Streams. Specifically for dealing with encrypting intermediate data such MapReduce spill files.
Constructor Summary | |
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CryptoUtils()
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Method Summary | |
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static byte[] |
createIV(org.apache.hadoop.conf.Configuration conf)
This method creates and initializes an IV (Initialization Vector) |
static int |
cryptoPadding(org.apache.hadoop.conf.Configuration conf)
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static boolean |
isShuffleEncrypted(org.apache.hadoop.conf.Configuration conf)
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static org.apache.hadoop.fs.FSDataInputStream |
wrapIfNecessary(org.apache.hadoop.conf.Configuration conf,
org.apache.hadoop.fs.FSDataInputStream in)
Wraps a given FSDataInputStream with a CryptoInputStream. |
static org.apache.hadoop.fs.FSDataOutputStream |
wrapIfNecessary(org.apache.hadoop.conf.Configuration conf,
org.apache.hadoop.fs.FSDataOutputStream out)
Wraps a given FSDataOutputStream with a CryptoOutputStream. |
static InputStream |
wrapIfNecessary(org.apache.hadoop.conf.Configuration conf,
InputStream in,
long length)
Wraps a given InputStream with a CryptoInputStream. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CryptoUtils()
Method Detail |
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public static boolean isShuffleEncrypted(org.apache.hadoop.conf.Configuration conf)
public static byte[] createIV(org.apache.hadoop.conf.Configuration conf) throws IOException
conf
-
IOException
public static int cryptoPadding(org.apache.hadoop.conf.Configuration conf)
public static org.apache.hadoop.fs.FSDataOutputStream wrapIfNecessary(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FSDataOutputStream out) throws IOException
conf
- out
-
IOException
public static InputStream wrapIfNecessary(org.apache.hadoop.conf.Configuration conf, InputStream in, long length) throws IOException
conf
- in
- length
-
IOException
public static org.apache.hadoop.fs.FSDataInputStream wrapIfNecessary(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.FSDataInputStream in) throws IOException
conf
- in
-
IOException
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