parameterized codinghelper with hash method

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@366 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 19 insertions, 9 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/tools/CodingHelper.java b/src/main/java/at/knowcenter/wag/egov/egiz/tools/CodingHelper.java
index fe0cfcb..ce46e68 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/tools/CodingHelper.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/tools/CodingHelper.java
@@ -197,22 +197,24 @@ public class CodingHelper
     }

   }

 

+  // dferbas

   /**

-   * This method builds an SHA-1 hash value of a given byte array.

+   * This method builds an  hash value of a given byte array.

    * 

    * @param data

    *          the byte array to build the hash value for

+   * @param hashAlg hash algorithm for {@link MessageDigest} e.g. "SHA-1" 

    * @return the calculated hash value as a byte array

    * @see MessageDigest

    */

-  public static byte[] buildDigest(byte[] data)

-  {

-    MessageDigest sha_1 = null;

+  public static byte[] buildDigest(byte[] data, String hashAlg)

+  {    

+    MessageDigest digester = null;

     try

     {

-      sha_1 = MessageDigest.getInstance("SHA-1");

-      sha_1.update(data);

-      return sha_1.digest();

+      digester = MessageDigest.getInstance(hashAlg);

+      digester.update(data);

+      return digester.digest();

     }

     catch (NoSuchAlgorithmException e)

     {

@@ -220,11 +222,19 @@ public class CodingHelper
     }

   }

 

-  public static byte[] buildDigest(DataSource input) throws IOException

+  // dferbas

+  /**

+   * This method builds an  hash value of a given byte array.

+   * @param input

+   * @param hashAlg hashAlg hash algorithm for {@link MessageDigest} e.g. "SHA-1"

+   * @return the calculated hash value as a byte array

+   * @throws IOException

+   */

+  public static byte[] buildDigest(DataSource input, String hashAlg) throws IOException

   {

     // PERF: digesting needs data source.

     byte [] data = DataSourceHelper.convertDataSourceToByteArray(input);

-    return buildDigest(data);

+    return buildDigest(data, hashAlg);

   }

   

   /**