When we set wrong ITERATION value (too big number or string) then we get NumberFormatException. ----------------------------------------------------------------------------------------------- Key: ELY-1058 URL: https://issues.jboss.org/browse/ELY-1058 Project: WildFly Elytron Issue Type: Bug Reporter: Hynek Švábek Assignee: Ilia Vassilev When we set wrong ITERATION value (too big number or string) then we get NumberFormatException. I expect here some meaningful message about what we expected -> e.g. integer value and its maximum value. {code} java -jar wildfly-elytron-tool.jar mask -x secret_password -i 2301145145644 -s 12用戶 java.lang.NumberFormatException: For input string: "2301145145644" {code} {code} java -jar wildfly-elytron-tool.jar mask -x secret_password -i 230sd644 -s 12用戶 java.lang.NumberFormatException: For input string: "230sd644" {code}