Hash SHA1 String

[Patrick McDonogh]

Hi all,

I am trying to create a SHA1 hash of a String Object. I have got as far as getting a DigestMethod object but from here i have no idea how to hash the string. The code i am using to get the digest method is shown below.

String hashingString = "I want to be hashed";
String providerName = System.getProperty("jsr105Provider", "org.jcp.xml.dsig.internal.dom.XMLDSigRI");
XMLSignatureFactory factory =
XMLSignatureFactory.getInstance("DOM", (Provider) Class.forName(providerName).newInstance());

DigestMethod method = factory.newDigestMethod(DigestMethod.SHA1,null);

Does anyone know how to get a hash of this string?
Have i started off correctly?

Thankyou in advance for your help.

Patrick

[Ulf Dittmer]

Is there a particular reason you're using the XML-Security classes? Because the standard class libraries contain everything you need, along the following lines:

byte[] buffer = "I want to be hashed".getBytes();
 
MessageDigest algorithm = MessageDigest.getInstance("SHA-1");
 
algorithm.reset();
 
algorithm.update(buffer);
 
byte[] digest = algorithm.digest();