RSCH

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@99 d688527b-c9ab-4aba-bd8d-4036d912da1d

1 files changed, 50 insertions, 0 deletions

diff --git a/id.server/src/at/gv/egovernment/moa/id/auth/builder/BPKBuilder.java b/id.server/src/at/gv/egovernment/moa/id/auth/builder/BPKBuilder.java
new file mode 100644
index 000000000..706d0a39a
--- /dev/null
+++ b/id.server/src/at/gv/egovernment/moa/id/auth/builder/BPKBuilder.java
@@ -0,0 +1,50 @@
+package at.gv.egovernment.moa.id.auth.builder;
+
+import java.security.MessageDigest;
+
+import at.gv.egovernment.moa.id.BuildException;
+import at.gv.egovernment.moa.util.Base64Utils;
+
+/**
+ * Builder for the BPK, as defined in
+ * <code>&quot;Ableitung f&uml;r die bereichsspezifische Personenkennzeichnung&quot;</code>
+ * version <code>1.0.1</code> from <code>&quot;reference.e-government.gv.at&quot;</code>.
+ *  
+ * @author Paul Ivancsics
+ * @version $Id$
+ */
+public class BPKBuilder {
+
+  /**
+   * Builds the BPK from given parameters. 
+   * @param identificationValue Base64 encoded "Stammzahl" 
+   * @param target "Verfahrensname"; will be transformed to lower case
+   * @return PBK in a BASE64 encoding
+   * @throws BuildException while building the BPK
+   */
+  public String buildBPK(String identificationValue, String target) 
+    throws BuildException {
+    
+    if (identificationValue == null || identificationValue.length() == 0 
+      || target == null || target.length() == 0)
+      throw new BuildException(
+        "builder.00", 
+        new Object[] {"BPK", 
+          "Unvollständige Parameterangaben: identificationValue=" + identificationValue + 
+          ",target=" + target});
+    String basisbegriff = identificationValue + "+" + target;
+    try {
+      MessageDigest md = MessageDigest.getInstance("SHA-1");
+      byte[] hash = md.digest(basisbegriff.getBytes("ISO-8859-1"));
+      String hashBase64 = Base64Utils.encode(hash);
+      return hashBase64;
+    }
+    catch (Exception ex) {
+      throw new BuildException(
+        "builder.00", 
+        new Object[] {"BPK", ex.toString()}, 
+        ex);
+    }
+  }
+
+}