In KDC.java test there is a simple contract that when a password ends with a digit, the keys generated should have a key version number as this digit. Sometimes, the randomPassword() method does return such a password and the test gets confused.

BTW, it's with this bug that I know the following characters are all digits, cool.

HEX DECIMAL CHAR
1099 4249 ¿
17e3 6115 ¿
aa51 43601 ¿