use nextBytes instead of generateSeed. delete unused generatePassword

Author: uwemaurer

src/main/java/org/kopi/ebics/certificate/KeyUtil.java

@@ -61,16 +61,6 @@ public static KeyPair makeKeyPair(int keyLen) throws NoSuchAlgorithmException {
 
   }
 
-  /**
-   * Generates a random password
-   *
-   * @return the password
-   */
-  public static String generatePassword() {
-      String pwd = Base64.encodeBase64String(Utils.secureRandom.generateSeed(5));
-      return pwd.substring(0, pwd.length() - 2);
-  }
-
   /**
    * Returns the digest value of a given public key.
    *

src/main/java/org/kopi/ebics/utils/Utils.java

@@ -123,11 +123,17 @@ public static byte[] zip(byte[] toZip) throws EbicsException {
    * @return a random nonce.
    */
   public static byte[] generateNonce() {
-    return secureRandom.generateSeed(16);
+    return nextRandomBytes(16);
   }
 
   public static byte[] generateKey() {
-    return secureRandom.generateSeed(16);
+    return nextRandomBytes(16);
+  }
+
+  private static byte[] nextRandomBytes(int n) {
+    byte[] data = new byte[n];
+    secureRandom.nextBytes(data);
+    return data;
   }
 
   /**