hey guys...

I'm working on a little project, or not so little, that works over encryptions and compressions.

I'd like to get all your ideas on how you guys encrypt your files.

I need to form a database of all kinds of encryptions and know exacly how they work. It can be unreversible encryptions (such as MD5), simple encryptions (such as changing or incrementing an ascii value), compression (such as rar, zip or ace format), etc.

I don't have much information right now about anything, what I need for each encryptions/compressions:

- How it gets encrypted (formulas, hash manipulations, etc)
- The exact file format (for instance how the headers/footer are hashed, where is the password hash, what each hash corresponds to)
- What are the factors involved in the encryption(word lenght, ascii char, file size,
- Is it a reversible encryption?
- If the encryption has a unique header to recognize it, indicating it would be appreciated...!
- If the encryption is very complex, how to decrypt would be appreciated...


If you guys have a good website referer I'd also appreciate, and if you help by giving code I can give you full credit in my program... (the program is not for lucrative goals, but for experimentation, which is why I can only offer name credit).

Thanks in advance,