Hi Pramod,

Can you increase KAFKA_HEAP_OPTS to lets say -Xmx1G in the
kafka-console-producer.sh to see if that gets you further along please in
your testing?

Thanks!

/*******************************************
 Joe Stein
 Founder, Principal Consultant
 Big Data Open Source Security LLC
 http://www.stealth.ly
 Twitter: @allthingshadoop <http://www.twitter.com/allthingshadoop>
********************************************/


On Fri, Jul 18, 2014 at 10:24 AM, Pramod Deshmukh <dpram...@gmail.com>
wrote:

> Hello Raja/Joe,
> When I turn on security, i still get out of memory error on producer. Is
> this something to do with keys? Is there any other way I can connect to
> broker?
>
> *producer log*
> [2014-07-17 15:38:14,186] ERROR OOME with size 352518400 (kafka.network.
> BoundedByteBufferReceive)
> java.lang.OutOfMemoryError: Java heap space
>
> *broker log*
>
> INFO begin ssl handshake for localhost/127.0.0.1:50199//127.0.0.1:9092
>
>
>
>
>
> On Thu, Jul 17, 2014 at 6:07 PM, Pramod Deshmukh <dpram...@gmail.com>
> wrote:
>
> > Correct, I don't see any exceptions when i turn off security. Consumer is
> > able to consume the message.
> >
> > I still see warning for topic property.
> >
> > [2014-07-17 18:04:38,360] WARN Property topic is not valid
> > (kafka.utils.VerifiableProperties)
> >
> >
> >
> >
> >
> > On Thu, Jul 17, 2014 at 5:49 PM, Rajasekar Elango <
> rela...@salesforce.com>
> > wrote:
> >
> >> Can you try with turning off security to check if this error happens
> only
> >> on secure mode?
> >>
> >> Thanks,
> >> Raja.
> >>
> >>
> >>
> >>
> >> On Thu, Jul 17, 2014 at 3:51 PM, Pramod Deshmukh <dpram...@gmail.com>
> >> wrote:
> >>
> >> > Thanks Raja, it was helpful
> >> >
> >> > Now I am able to start zookeeper and broker in secure mode ready for
> SSL
> >> > handshake. I get *java.lang.OutOfMemoryError: Java heap space* on
> >> producer.
> >> >
> >> > I using the default configuration and keystore. Is there anything
> >> missing
> >> >
> >> > *Start broker:*
> >> >
> >> > *bin/kafka-server-start.sh config/server.properties*
> >> >
> >> >
> >> >
> >> > *broker.log:*
> >> >
> >> > [2014-07-17 15:34:46,281] INFO zookeeper state changed (SyncConnected)
> >> > (org.I0Itec.zkclient.ZkClient)
> >> >
> >> > [2014-07-17 15:34:46,523] INFO Loading log 'secure.test-0'
> >> > (kafka.log.LogManager)
> >> >
> >> > [2014-07-17 15:34:46,558] INFO Recovering unflushed segment 0 in log
> >> > secure.test-0. (kafka.log.Log)
> >> >
> >> > [2014-07-17 15:34:46,571] INFO Completed load of log secure.test-0
> with
> >> log
> >> > end offset 0 (kafka.log.Log)
> >> >
> >> > [2014-07-17 15:34:46,582] INFO Starting log cleanup with a period of
> >> 60000
> >> > ms. (kafka.log.LogManager)
> >> >
> >> > [2014-07-17 15:34:46,587] INFO Starting log flusher with a default
> >> period
> >> > of 9223372036854775807 ms. (kafka.log.LogManager)
> >> >
> >> > [2014-07-17 15:34:46,614] INFO Initializing secure authentication
> >> > (kafka.network.security.SecureAuth$)
> >> >
> >> > [2014-07-17 15:34:46,678] INFO Secure authentication initialization
> has
> >> > been successfully completed (kafka.network.security.SecureAuth$)
> >> >
> >> > [2014-07-17 15:34:46,691] INFO Awaiting socket connections on
> >> 0.0.0.0:9092
> >> > .
> >> > (kafka.network.Acceptor)
> >> >
> >> > [2014-07-17 15:34:46,692] INFO [Socket Server on Broker 0], Started
> >> > (kafka.network.SocketServer)
> >> >
> >> > [2014-07-17 15:34:46,794] INFO Will not load MX4J, mx4j-tools.jar is
> >> not in
> >> > the classpath (kafka.utils.Mx4jLoader$)
> >> >
> >> > [2014-07-17 15:34:46,837] INFO 0 successfully elected as leader
> >> > (kafka.server.ZookeeperLeaderElector)
> >> >
> >> > [2014-07-17 15:34:47,057] INFO Registered broker 0 at path
> >> /brokers/ids/0
> >> > with address 10.1.100.130:9092. (kafka.utils.ZkUtils$)
> >> >
> >> > [2014-07-17 15:34:47,059] INFO New leader is 0
> >> > (kafka.server.ZookeeperLeaderElector$LeaderChangeListener)
> >> >
> >> > *[2014-07-17 15:34:47,068] INFO [Kafka Server 0], started
> >> > (kafka.server.KafkaServer)*
> >> >
> >> > *[2014-07-17 15:34:47,383] INFO begin ssl handshake for
> >> > /10.1.100.130:9092//10.1.100.130:51685
> >> > <http://10.1.100.130:9092//10.1.100.130:51685>
> >> > (kafka.network.security.SSLSocketChannel)*
> >> >
> >> > *[2014-07-17 15:34:47,392] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51685//10.1.100.130:9092
> >> > <http://10.1.100.130/10.1.100.130:51685//10.1.100.130:9092>
> >> > (kafka.network.security.SSLSocketChannel)*
> >> >
> >> > *[2014-07-17 15:34:47,465] INFO finished ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51685//10.1.100.130:9092
> >> > <http://10.1.100.130/10.1.100.130:51685//10.1.100.130:9092>
> >> > (kafka.network.security.SSLSocketChannel)*
> >> >
> >> > *[2014-07-17 15:34:47,465] INFO finished ssl handshake for
> >> > /10.1.100.130:9092//10.1.100.130:51685
> >> > <http://10.1.100.130:9092//10.1.100.130:51685>
> >> > (kafka.network.security.SSLSocketChannel)*
> >> >
> >> > *[2014-07-17 15:34:47,617] INFO [ReplicaFetcherManager on broker 0]
> >> Removed
> >> > fetcher for partitions  (kafka.server.ReplicaFetcherManager)*
> >> >
> >> > *[2014-07-17 15:34:47,627] INFO [ReplicaFetcherManager on broker 0]
> >> Added
> >> > fetcher for partitions List() (kafka.server.ReplicaFetcherManager)*
> >> >
> >> > *[2014-07-17 15:34:47,656] INFO [ReplicaFetcherManager on broker 0]
> >> Removed
> >> > fetcher for partitions [secure.test,0]
> >> > (kafka.server.ReplicaFetcherManager)*
> >> >
> >> > [2014-07-17 15:37:15,970] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51689//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:16,075] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51690//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:16,434] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51691//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:16,530] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51692//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:16,743] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51693//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:16,834] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51694//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:17,043] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51695//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:17,137] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51696//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> > [2014-07-17 15:37:17,342] INFO begin ssl handshake for
> >> > 10.1.100.130/10.1.100.130:51697//10.1.100.130:9092
> >> > (kafka.network.security.SSLSocketChannel)
> >> >
> >> >
> >> > *Start producer*
> >> >
> >> > *bin/kafka-console-producer.sh --broker-list 10.1.100.130:9092:true
> >> > --topic
> >> > secure.test*
> >> >
> >> >
> >> > *producer.log:*
> >> >
> >> > bin/kafka-console-producer.sh --broker-list 10.1.100.130:9092:true
> >> --topic
> >> > secure.test
> >> >
> >> > [2014-07-17 15:37:46,889] WARN Property topic is not valid
> >> > (kafka.utils.VerifiableProperties)
> >> >
> >> > Hello Secure Kafka
> >> >
> >> > *[2014-07-17 15:38:14,186] ERROR OOME with size 352518400
> >> > (kafka.network.BoundedByteBufferReceive)*
> >> >
> >> > *java.lang.OutOfMemoryError: Java heap space*
> >> >
> >> > at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
> >> >
> >> > at java.nio.ByteBuffer.allocate(ByteBuffer.java:331)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.network.BoundedByteBufferReceive.byteBufferAllocate(BoundedByteBufferReceive.scala:80)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.network.BoundedByteBufferReceive.readFrom(BoundedByteBufferReceive.scala:63)
> >> >
> >> > at kafka.network.Receive$class.readCompletely(Transmission.scala:56)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.network.BoundedByteBufferReceive.readCompletely(BoundedByteBufferReceive.scala:29)
> >> >
> >> > at kafka.network.BlockingChannel.receive(BlockingChannel.scala:102)
> >> >
> >> > at kafka.producer.SyncProducer.liftedTree1$1(SyncProducer.scala:79)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:76)
> >> >
> >> > at kafka.producer.SyncProducer.send(SyncProducer.scala:117)
> >> >
> >> > at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:58)
> >> >
> >> > at
> >> >
> >>
> kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.DefaultEventHandler$$anonfun$handle$1.apply$mcV$sp(DefaultEventHandler.scala:67)
> >> >
> >> > at kafka.utils.Utils$.swallow(Utils.scala:172)
> >> >
> >> > at kafka.utils.Logging$class.swallowError(Logging.scala:106)
> >> >
> >> > at kafka.utils.Utils$.swallowError(Utils.scala:45)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:67)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:104)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.ProducerSendThread$$anonfun$processEvents$3.apply(ProducerSendThread.scala:87)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.ProducerSendThread$$anonfun$processEvents$3.apply(ProducerSendThread.scala:67)
> >> >
> >> > at scala.collection.immutable.Stream.foreach(Stream.scala:526)
> >> >
> >> > at
> >> >
> >> >
> >>
> kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:66)
> >> >
> >> > at
> >> kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:44)
> >> >
> >> >
> >> >
> >> > On Wed, Jul 16, 2014 at 6:07 PM, Rajasekar Elango <
> >> rela...@salesforce.com>
> >> > wrote:
> >> >
> >> > > Pramod,
> >> > >
> >> > >
> >> > > I presented secure kafka configuration and usage at last meet up. So
> >> hope
> >> > > this
> >> > > video recording <http://www.ustream.tv/recorded/48396701>would
> help.
> >> You
> >> > > can skip to about 59 min to jump to security talk.
> >> > >
> >> > > Thanks,
> >> > > Raja.
> >> > >
> >> > >
> >> > > On Wed, Jul 16, 2014 at 5:57 PM, Pramod Deshmukh <
> dpram...@gmail.com>
> >> > > wrote:
> >> > >
> >> > > > Hello Joe,
> >> > > >
> >> > > > Is there a configuration or example to test Kafka security piece?
> >> > > >
> >> > > > Thanks,
> >> > > >
> >> > > > Pramod
> >> > > >
> >> > > >
> >> > > > On Wed, Jul 16, 2014 at 5:20 PM, Pramod Deshmukh <
> >> dpram...@gmail.com>
> >> > > > wrote:
> >> > > >
> >> > > > > Thanks Joe,
> >> > > > >
> >> > > > > This branch works. I was able to proceed. I still had to set
> scala
> >> > > > version
> >> > > > > to 2.9.2 in kafka-run-class.sh.
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > On Wed, Jul 16, 2014 at 3:57 PM, Joe Stein <
> joe.st...@stealth.ly>
> >> > > wrote:
> >> > > > >
> >> > > > >> That is a very old branch.
> >> > > > >>
> >> > > > >> Here is a more up to date one
> >> > > > >> https://github.com/stealthly/kafka/tree/v0.8.2_KAFKA-1477
> >> (needs to
> >> > > be
> >> > > > >> updated to latest trunk might have a chance to-do that next
> >> week).
> >> > > > >>
> >> > > > >> You should be using gradle now as per the README.
> >> > > > >>
> >> > > > >> /*******************************************
> >> > > > >>  Joe Stein
> >> > > > >>  Founder, Principal Consultant
> >> > > > >>  Big Data Open Source Security LLC
> >> > > > >>  http://www.stealth.ly
> >> > > > >>  Twitter: @allthingshadoop <
> >> http://www.twitter.com/allthingshadoop>
> >> > > > >> ********************************************/
> >> > > > >>
> >> > > > >>
> >> > > > >> On Wed, Jul 16, 2014 at 3:49 PM, Pramod Deshmukh <
> >> > dpram...@gmail.com>
> >> > > > >> wrote:
> >> > > > >>
> >> > > > >> > Thanks Joe for this,
> >> > > > >> >
> >> > > > >> > I cloned this branch and tried to run zookeeper but I get
> >> > > > >> >
> >> > > > >> > Error: Could not find or load main class
> >> > > > >> > org.apache.zookeeper.server.quorum.QuorumPeerMain
> >> > > > >> >
> >> > > > >> >
> >> > > > >> > I see scala version is still set to 2.8.0
> >> > > > >> >
> >> > > > >> > if [ -z "$SCALA_VERSION" ]; then
> >> > > > >> >
> >> > > > >> >         SCALA_VERSION=2.8.0
> >> > > > >> >
> >> > > > >> > fi
> >> > > > >> >
> >> > > > >> >
> >> > > > >> >
> >> > > > >> > Then I installed sbt and scala and followed your instructions
> >> for
> >> > > > >> different
> >> > > > >> > scala versions. I was able to bring zookeeper up but brokers
> >> fail
> >> > to
> >> > > > >> start
> >> > > > >> > with error
> >> > > > >> >
> >> > > > >> > Error: Could not find or load main class kafka.Kafka
> >> > > > >> >
> >> > > > >> > I think I am doing something wrong. Can you please help me?
> >> > > > >> >
> >> > > > >> > Our current production setup is with 2.8.0 and want to stick
> to
> >> > it.
> >> > > > >> >
> >> > > > >> > Thanks,
> >> > > > >> >
> >> > > > >> > Pramod
> >> > > > >> >
> >> > > > >> >
> >> > > > >> > On Tue, Jun 3, 2014 at 3:57 PM, Joe Stein <
> >> joe.st...@stealth.ly>
> >> > > > wrote:
> >> > > > >> >
> >> > > > >> > > Hi,I wanted to re-ignite the discussion around Apache Kafka
> >> > > > Security.
> >> > > > >> >  This
> >> > > > >> > > is a huge bottleneck (non-starter in some cases) for a lot
> of
> >> > > > >> > organizations
> >> > > > >> > > (due to regulatory, compliance and other requirements).
> Below
> >> > are
> >> > > my
> >> > > > >> > > suggestions for specific changes in Kafka to accommodate
> >> > security
> >> > > > >> > > requirements.  This comes from what folks are doing "in the
> >> > wild"
> >> > > to
> >> > > > >> > > workaround and implement security with Kafka as it is today
> >> and
> >> > > also
> >> > > > >> > what I
> >> > > > >> > > have discovered from organizations about their blockers. It
> >> also
> >> > > > >> picks up
> >> > > > >> > > from the wiki (which I should have time to update later in
> >> the
> >> > > week
> >> > > > >> based
> >> > > > >> > > on the below and feedback from the thread).
> >> > > > >> > >
> >> > > > >> > > 1) Transport Layer Security (i.e. SSL)
> >> > > > >> > >
> >> > > > >> > > This also includes client authentication in addition to
> >> > in-transit
> >> > > > >> > security
> >> > > > >> > > layer.  This work has been picked up here
> >> > > > >> > > https://issues.apache.org/jira/browse/KAFKA-1477 and do
> >> > > appreciate
> >> > > > >> any
> >> > > > >> > > thoughts, comments, feedback, tomatoes, whatever for this
> >> patch.
> >> > >  It
> >> > > > >> is a
> >> > > > >> > > pickup from the fork of the work first done here
> >> > > > >> > > https://github.com/relango/kafka/tree/kafka_security.
> >> > > > >> > >
> >> > > > >> > > 2) Data encryption at rest.
> >> > > > >> > >
> >> > > > >> > > This is very important and something that can be
> facilitated
> >> > > within
> >> > > > >> the
> >> > > > >> > > wire protocol. It requires an additional map data structure
> >> for
> >> > > the
> >> > > > >> > > "encrypted [data encryption key]". With this map (either in
> >> your
> >> > > > >> object
> >> > > > >> > or
> >> > > > >> > > in the wire protocol) you can store the dynamically
> generated
> >> > > > >> symmetric
> >> > > > >> > key
> >> > > > >> > > (for each message) and then encrypt the data using that
> >> > > dynamically
> >> > > > >> > > generated key.  You then encrypt the encryption key using
> >> each
> >> > > > public
> >> > > > >> key
> >> > > > >> > > for whom is expected to be able to decrypt the encryption
> >> key to
> >> > > > then
> >> > > > >> > > decrypt the message.  For each public key encrypted
> symmetric
> >> > key
> >> > > > >> (which
> >> > > > >> > is
> >> > > > >> > > now the "encrypted [data encryption key]" along with which
> >> > public
> >> > > > key
> >> > > > >> it
> >> > > > >> > > was encrypted with for (so a map of [publicKey] =
> >> > > > >> > > encryptedDataEncryptionKey) as a chain.   Other patterns
> can
> >> be
> >> > > > >> > implemented
> >> > > > >> > > but this is a pretty standard digital enveloping [0]
> pattern
> >> > with
> >> > > > >> only 1
> >> > > > >> > > field added. Other patterns should be able to use that
> field
> >> > to-do
> >> > > > >> their
> >> > > > >> > > implementation too.
> >> > > > >> > >
> >> > > > >> > > 3) Non-repudiation and long term non-repudiation.
> >> > > > >> > >
> >> > > > >> > > Non-repudiation is proving data hasn't changed.  This is
> >> often
> >> > (if
> >> > > > not
> >> > > > >> > > always) done with x509 public certificates (chained to a
> >> > > certificate
> >> > > > >> > > authority).
> >> > > > >> > >
> >> > > > >> > > Long term non-repudiation is what happens when the
> >> certificates
> >> > of
> >> > > > the
> >> > > > >> > > certificate authority are expired (or revoked) and
> everything
> >> > ever
> >> > > > >> signed
> >> > > > >> > > (ever) with that certificate's public key then becomes "no
> >> > longer
> >> > > > >> > provable
> >> > > > >> > > as ever being authentic".  That is where RFC3126 [1] and
> >> RFC3161
> >> > > [2]
> >> > > > >> come
> >> > > > >> > > in (or worm drives [hardware], etc).
> >> > > > >> > >
> >> > > > >> > > For either (or both) of these it is an operation of the
> >> > encryptor
> >> > > to
> >> > > > >> > > sign/hash the data (with or without third party trusted
> >> timestap
> >> > > of
> >> > > > >> the
> >> > > > >> > > signing event) and encrypt that with their own private key
> >> and
> >> > > > >> distribute
> >> > > > >> > > the results (before and after encrypting if required) along
> >> with
> >> > > > their
> >> > > > >> > > public key. This structure is a bit more complex but
> >> feasible,
> >> > it
> >> > > > is a
> >> > > > >> > map
> >> > > > >> > > of digital signature formats and the chain of dig sig
> >> > > attestations.
> >> > > > >>  The
> >> > > > >> > > map's key being the method (i.e. CRC32, PKCS7 [3],
> XmlDigSig
> >> > [4])
> >> > > > and
> >> > > > >> > then
> >> > > > >> > > a list of map where that key is "purpose" of signature
> (what
> >> > your
> >> > > > >> > attesting
> >> > > > >> > > too).  As a sibling field to the list another field for
> "the
> >> > > > >> attester" as
> >> > > > >> > > bytes (e.g. their PKCS12 [5] for the map of PKCS7
> >> signatures).
> >> > > > >> > >
> >> > > > >> > > 4) Authorization
> >> > > > >> > >
> >> > > > >> > > We should have a policy of "404" for data, topics,
> partitions
> >> > > (etc)
> >> > > > if
> >> > > > >> > > authenticated connections do not have access.  In "secure
> >> mode"
> >> > > any
> >> > > > >> non
> >> > > > >> > > authenticated connections should get a "404" type message
> on
> >> > > > >> everything.
> >> > > > >> > > Knowing "something is there" is a security risk in many
> uses
> >> > > cases.
> >> > > > >>  So
> >> > > > >> > if
> >> > > > >> > > you don't have access you don't even see it.  Baking "that"
> >> into
> >> > > > Kafka
> >> > > > >> > > along with some interface for entitlement (access
> management)
> >> > > > systems
> >> > > > >> > > (pretty standard) is all that I think needs to be done to
> the
> >> > core
> >> > > > >> > project.
> >> > > > >> > >  I want to tackle item later in the year after summer after
> >> the
> >> > > > other
> >> > > > >> > three
> >> > > > >> > > are complete.
> >> > > > >> > >
> >> > > > >> > > I look forward to thoughts on this and anyone else
> >> interested in
> >> > > > >> working
> >> > > > >> > > with us on these items.
> >> > > > >> > >
> >> > > > >> > > [0]
> >> > > > >> > >
> >> > > > >> > >
> >> > > > >> >
> >> > > > >>
> >> > > >
> >> > >
> >> >
> >>
> http://www.emc.com/emc-plus/rsa-labs/standards-initiatives/what-is-a-digital-envelope.htm
> >> > > > >> > > [1] http://tools.ietf.org/html/rfc3126
> >> > > > >> > > [2] http://tools.ietf.org/html/rfc3161
> >> > > > >> > > [3]
> >> > > > >> > >
> >> > > > >> > >
> >> > > > >> >
> >> > > > >>
> >> > > >
> >> > >
> >> >
> >>
> http://www.emc.com/emc-plus/rsa-labs/standards-initiatives/pkcs-7-cryptographic-message-syntax-standar.htm
> >> > > > >> > > [4] http://en.wikipedia.org/wiki/XML_Signature
> >> > > > >> > > [5] http://en.wikipedia.org/wiki/PKCS_12
> >> > > > >> > >
> >> > > > >> > > /*******************************************
> >> > > > >> > >  Joe Stein
> >> > > > >> > >  Founder, Principal Consultant
> >> > > > >> > >  Big Data Open Source Security LLC
> >> > > > >> > >  http://www.stealth.ly
> >> > > > >> > >  Twitter: @allthingshadoop <
> >> > > http://www.twitter.com/allthingshadoop>
> >> > > > >> > > ********************************************/
> >> > > > >> > >
> >> > > > >> >
> >> > > > >>
> >> > > > >
> >> > > > >
> >> > > >
> >> > >
> >> > >
> >> > >
> >> > > --
> >> > > Thanks,
> >> > > Raja.
> >> > >
> >> >
> >>
> >>
> >>
> >> --
> >> Thanks,
> >> Raja.
> >>
> >
> >
>

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