1 files changed, 111 insertions, 0 deletions
diff --git a/pki/base/util/src/netscape/security/x509/X500Signer.java b/pki/base/util/src/netscape/security/x509/X500Signer.java
new file mode 100644
index 000000000..cd13c3359
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+++ b/pki/base/util/src/netscape/security/x509/X500Signer.java
@@ -0,0 +1,111 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package netscape.security.x509;
+
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.Signer;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * This class provides a binding between a Signature object and an
+ * authenticated X.500 name (from an X.509 certificate chain), which
+ * is needed in many public key signing applications.
+ *
+ * <P>The name of the signer is important, both because knowing it is the
+ * whole point of the signature, and because the associated X.509 certificate
+ * is always used to verify the signature.
+ *
+ * <P><em>The X.509 certificate chain is temporarily not associated with
+ * the signer, but this omission will be resolved.</em>
+ *
+ * @version 1.18
+ *
+ * @author David Brownell
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ */
+public final class X500Signer extends Signer
+{
+    /**
+     * Called for each chunk of the data being signed.  That
+     * is, you can present the data in many chunks, so that
+     * it doesn't need to be in a single sequential buffer.
+     *
+     * @param buf buffer holding the next chunk of the data to be signed
+     * @param offset starting point of to-be-signed data
+     * @param len how many bytes of data are to be signed
+     * @exception SignatureException on errors.
+     */
+    public void update(byte buf[], int offset, int len)
+    throws SignatureException {
+        sig.update (buf, offset, len);
+    }
+
+    /**
+     * Produces the signature for the data processed by update().
+     *
+     * @exception SignatureException on errors.
+     */
+    public byte[] sign() throws SignatureException {
+        return sig.sign();
+    }
+
+    /**
+     * Returns the algorithm used to sign.
+     */
+    public AlgorithmId 	getAlgorithmId() {
+        return algid;
+    }
+
+    /**
+     * Returns the name of the signing agent.
+     */
+    public X500Name	getSigner() {
+        return agent;
+    }
+
+    /*
+     * Constructs a binding between a signature and an X500 name
+     * from an X.509 certificate.
+     */
+    // package private  ----hmmmmm ?????
+    public X500Signer(Signature sig, X500Name agent) {
+	if (sig == null || agent == null)
+	    throw new IllegalArgumentException ("null parameter");
+
+	this.sig = sig;
+	this.agent = agent;
+
+	try {
+	  this.algid = AlgorithmId.getAlgorithmId(sig.getAlgorithm());
+          String alg = sig.getAlgorithm(); 
+          if( alg.equals("DSA") ) { 
+              alg = "SHA1withDSA"; 
+          } 
+          this.algid = AlgorithmId.getAlgorithmId(alg); 
+
+	} catch (NoSuchAlgorithmException e) {
+	    throw new RuntimeException("internal error! " + e.getMessage());
+	}
+    }
+    
+    private Signature	sig;
+    private X500Name	agent;		// XXX should be X509CertChain
+    private AlgorithmId	algid;
+}