Need to create Digital Signature & Encrypt the File

[Former Member]

Hi Experts,

I have an requirement, I need to create a module in which I need to pass four values (Namely signing key, signing algorithm, encyption key and encryption algorithm) through parameters as inputs. Based on these parameters, I need to create the signature for the input xml file and I have to encrypted the file. Please Guide me. Give some useful links, documents or codes to how to do this. Help me in this regard.

Thanks in Advance,

Venkatesh.K

[Former Member · Accepted solution]

Have a look at the Java cryptographic arhictecture and start from there

http://java.sun.com/j2se/1.4.2/docs/guide/security/CryptoSpec.html

Start with that, and do some google searches

Note that SAP Java AS is using the IAIK security library(http://jce.iaik.tugraz.at/) on top of Java cryptographic arhictecture and therefore will support more cryptographic algorithms

Regards

Dagfinn

[Former Member · Accepted solution]

Hi Venkatesh,

The use of SsfDataSMIME class is the same as for SsfDataXML because both implement the same interface ISsfData. The only differences between them are the construction methods.

To create a instance from SsfDataSMIME class you have to pass two arguments: the (MIME) message itself, as InputStream or MimeMessage object, and the context of the (MIME) message that can be null.

After that you can sign and/or encrypt the (MIME) message the same way, using the same methods, like you did for SsfDataXML object.

Hope it helps.

Please reward if so.

Regards

Alexandre

[Former Member · Accepted solution]

Hi Alexandre,

Could you tell me in which Java package are these classes and interfaces implemented?

I cannot find the ISsfData interface and the SsfDataXML class anywhere.

Many thanks,

Aldo

[Former Member · Accepted solution]

Hi Aldo,

The java packages where this classes and interfaces are implemented are:

- com.sap.security.api.ssf

- com.sap.security.core.server.ssf

You can find this in the jar file tc_sec_ssf.jar.

Also look the following SAP Help link [Secure Store and Forward Mechanism (SSF)|http://help.sap.com/saphelp_nw2004s/helpdata/en/4d/bf6f77a2c5446a86e0152f1b309db6/frameset.htm]

Please reward if helpful.

Regards

Alexandre

[Former Member · Accepted solution]

Hi Alexandre,

Thanks very much! I wish I could give you points for this as you solved my issue.

If you are interested place the same answer in here:

and I will assign you the points.

Best regards,

Aldo