Signing Code with Sun's Java 2-III
keytool -import -alias newalias -trustcacerts -file response :import certificates from authorities.
keytool -export -alias keyname -file mycert : Export
jarsigner SignMe.jar keyname sign a jar file
jarsigner -verbose SignMe.jar keyname monitor signing process
jarsigner -verify Unknown.jar verify signing of a file
jarsigner -verify -verbose -certs Unknown.jar More detailed check.
keytool -import -alias analias -file acert : Import to run others signed programs