Query - Does JSSE library implement the Ciphers or Algorithms of a SSL protocol ?

Seán Coffey sean.coffey at oracle.com
Wed Jun 1 08:20:50 UTC 2016


The JDK pulls crypto operations from different providers to complete 
operations (like TLS handshakes). The jsse.jar file is primarily tasked 
with handling TLS operations but will call into other providers (jars) 
where necessary. That's all controlled by the security provider framework.

If you're interested in seeing exactly what providers are in use, you 
can use the -Djava.security.debug=provider property. It'll print that 
information in verbose detail. That extra output is available in 7u80, 
8u40 and later JDKs : https://bugs.openjdk.java.net/browse/JDK-8056026

Regards,
Sean.

On 01/06/2016 09:06, Ayaskant Swain wrote:
> Hi All,
>
> My question was not specific to those two cipher suites that I had 
> pasted in my query. I had just pasted them as examples. Rather my 
> question was generic.
>
> I want to know which library or packages in JDK implement the 
> Algorithms/Ciphers that are used for SSL communication?
>
> If java provides the implementation of those cryptographic Algos 
> through the *java.security , java.net.ssl & javax.crypto* packages 
> then what is the role of the *jsse.jar* library that ships in as part 
> of the *JAVA_HOME/ jre/lib* directory?
>
> I could clearly see the *jsse.jar *has classes like *Handshaker.class, 
> SSLContextImpl.class, HandShakeMessage.class* inside the 
> sun.security.ssl package which do the actual SSL Handshake. There are 
> many more classes inside this package.
>
> So wanted clarification on this.
>
> Thanks
> Ayas
>
> On Wed, Jun 1, 2016 at 1:22 PM, Seán Coffey <sean.coffey at oracle.com 
> <mailto:sean.coffey at oracle.com>> wrote:
>
>
>     On 01/06/2016 03:42, Jim Manico wrote:
>>
>>     I think this is the right answer.
>>
>>     From
>>     https://stackoverflow.com/questions/27323858/java-6-ecdhe-cipher-suite-support
>>
>>     The SSL/TLS implementation "JSSE" in Java 1.6 and later supports
>>     ECDHE suites*IF there is an available (JCE) provider*for needed
>>     ECC primitives.*Java 1.6 OOTB does NOT*include such an ECC
>>     provider, but you can add one.*Java 7 and 8 do*include SunECC
>>     provider.
>>
>     I don't believe Ayaskant's query was specific to ECC. In any case,
>     the above answer isn't accurate. ECC support is available OOTB in JDK
>     6 for Solaris. It's provided via the SunPKCS11 provider. SunEC
>     provider was added in JDK 7:
>     http://docs.oracle.com/javase/7/docs/technotes/guides/security/SunProviders.html#SunEC
>
>     regards,
>     Sean.
>>
>>     - Jim
>>
>>
>>     On 5/29/16 8:02 PM, Ayaskant Swain wrote:
>>>     Hi,
>>>
>>>     Can anyone please help me know about this - Does JSSE library
>>>     implement the Ciphers or Algorithms of a SSL protocol ? I see
>>>     the jsse.jar library shipped with the JDK. I read the the Oracle
>>>     document about JSSE -
>>>     http://docs.oracle.com/javase/8/docs/technotes/guides/security/jsse/JSSERefGuide.html#Introduction
>>>
>>>     So my question is - does the JSSE implement the Ciphers or
>>>     Algorithms that are used for a successful SSL handshake , server
>>>     authentication, data integrity & data confidentiality
>>>     (Application data encryption).
>>>
>>>     Example of cipher suites -
>>>     *TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 or
>>>     **TLS_DHE_RSA_WITH_AES_128_GCM_SHA256*
>>>     *
>>>     *
>>>     So is the coding of the above ciphers have been done in the JSSE
>>>     library?
>>>
>>>     Thanks
>>>     Ayaskant
>>>     Bangalore
>>
>
>

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