How to encrypter & decrypter .DAT file

[krangsak]

How to decrypt characterdata.dat, stage.dat & itemdata.dat to .txt file?

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Ex.
Itemdata:

// 12 entries

Name Dual
Delay 600
Single False
Tooltip This item can be used dual firing of any weapon. The delay is longer than normal but it gives double damage to enemy.
Name Teleport
Delay 100
Single False
Tooltip Can teleport to the point where object of teleport item is fell.
Name Dual+
Delay 250
Single False
Tooltip Same as Dual item but can fire different two weapons and delay shorter than Dual.
Name @ZFxE:
Delay 0
Single False
Tooltip
Name Blood
Delay 0
Single True
Tooltip Use 8% of user's energy can give 33% additional damage to enemy.
Name Energy up 1
Delay 100
Single True
Tooltip Add little energy and life forms have 5% bonus healing effect.
Name Energy up 2
Delay 300
Single False
Tooltip Add 25% of maximum energy and life forms have 5% bonus healing effect.
Name Team Teleport
Delay 50
Single False
Tooltip Change position with team member who has the least power. It makes to loose turn but delay is very short.
Name Change Wind
Delay 150
Single True
Tooltip Make wind's direction to backward. It has heavy delay so need to quick judge and shooting.
Name Power up
Delay 150
Single True
Tooltip This item adding 33% cannonball power and it has shorter delay than Dual.
Name Thunder
Delay 200
Single False
Tooltip It makes to occur lighting the area where cannonball is fell. It is very powerful when the electrical attack is efficient.
Name Bunge shot
Delay 50
Single True
Tooltip Give 25% more damages to bury enemy. It is very powerful on time uses but need to control delay wisely.

[MentaL]