How to change the alias of a key within a keystore?
It is possible to duplicate a key in a keystore with the keyclone command of keytool:
keytool -keyclone -alias "your-very-very-long-alias" -dest "new-alias" -keypass keypass -new new_keypass -keystore /path/to/keystore -storepass storepassThe changealias command changes the alias for an existing entry:
keytool -changealias -alias "your-very-very-long-alias" -destalias "new-alias" -keypass keypass -keystore /path/to/keystore -storepass storepassFor those that want to be prompted to enter password just remove the respective password flags (changealias example):
keytool -changealias -alias "your-very-very-long-alias" -destalias "new-alias" -keystore "/path/to/keystore"