code: public static String calculateSHA1(String string) {
  		MessageDigest md = null;
  		try {
  			md = MessageDigest.getInstance("SHA-1");
  		} catch (NoSuchAlgorithmException e) {
  			QuickUtils.log.e("NoSuchAlgorithmException", e);
  		}
  		try {
  			md.update(string.getBytes("iso-8859-1"), 0, string.length());
  		} catch (UnsupportedEncodingException e) {
  			QuickUtils.log.e("UnsupportedEncodingException", e);
  
  		}
  		byte[] sha1hash = md.digest();
  		return convertToHex(sha1hash);
  	}
docs: Calculate the SHA-1 of a given String
  
  @param string
  String to be SHA1'ed
  @return SHA1'ed String