How to unencrypt something

i encrypted something months ago it was just some data to stop my freind from finding it anyway i forgot i had it and i found it the other day and now ive forgotton how to encrypt and unencrypt so if anyone knows could they tell me.STOP
thanks dessa

Konnichiwa,

Best way is to use the same utility you used to encrypt it. You'll have to remember the password.

You can use Archive programs to encrypt something, a pro is that it will also consume less space. WinRar has a better encryption than WinZip. Be sure to use a strong password as there are password crackers for such archives. If you use over 10 characters, mix upper/lower case, digits and special signs, avoid dictionary words (any language), names of favourite pet and the like, then it will take many lifetimes with current hardware to crack such archives.
The tools will crack a password of some 5 characters in less than a few hours, sometimes within seconds. Each extra character adds *255 possibilities when the whole ASCI set's used.

Just open the archive like normal and it will ask for the password.

no i mean i encrypted an exe for a program i wrote. to stop my friend from using the Exe i encrypted the exe because you needed to change a certain line in the EXE to make it work so i encrypted it with an old program in a wild rush to clean my hard drive i deleleted the program so do you either know where i can get a new program or manually unencrypt it.
thanks dessa

Which program did you use to encrypt the Exe?
A new program of what?

There are many ways to encrypt something, different algorithms.

i used an old program i want a program that can memorize the active memory codes break it down to machine code and then i can crack it normally but i need a program to retrieve the active memory data. Do you know where i can find one.
thanks dessa

Sorry, I don't. But it may be of help if you tell us what you used to encrypt it.

i don't know anymore ive lost it and i don't know what it was called
thanks dessa

many years ago there was an explorer called Buckley,
he took a donkey and tried to cross the Simpson desert
- naturally he was never heard of again,

Thus the all australian expression "Buckley's Chance"
often used colloquially "you've got Buckley's mate"

and that is about how much chance you have without knowing what was used to encrypt in the first place...

no all i need is a program that can log the script as it goes through active memory as machine code. from machine code i can reassemble the program as it should be and change it back. what im asking is where can i get a program to do this.
thanks dessa