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Alvo
is a tiny application with only 33 kBytes size, for Windows OS, which encrypt/decrypt any kind of files. It uses a safe and fast csprng algorithm
on stream cipher and erase files
permanently. Bellow is an explanation how it works.
A yellow in blue line means a file already encrypted by this application,
with a 2^473 bit key. You have only one possibility to decrypt the cipher text.
And the same plain text, can be encrypted in ~ 2^47 different ciphers, just
with the same key given by you. |
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The
program uses the follow keys: Up
arrow Move Up one file Down
arrow Move Down one file Insert Show/Hide key PageUp Move Up 17 files PageDw Move Down 17 files Home Go to first file End Go to last file Character Alphabetic selection Enter Choose file Del Delete a file Esc Backward until exit |
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Select a file using the above keys,
press Enter on e.g. OGALLERY_SLIDESHOW.MHT.
After that you can write your key to encrypt/decrypt the selected file. Write
the key simply by pressing the characters. The key must have 72 characters
long. As you write it you will see only (*). To show or hide the password use
Insert. After that press Enter and the file will be start to
encrypt/decrypt. |
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After the encrypt process, the
filename in green color, will be changed to yellow color, meaning the file
was encrypted by Alvo. To
decrypt a file choose a yellow color
file name and press Enter. Write the original key, press Enter again, and, if the key is
correct, the file is decrypted. To
erase a file press Del and confirm, pressing Del again. This will erase the file for
ever with no chances to be restored. If you want not to erase the file, press
any key. Esc will exit the program. |
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Warning: The
key is case sensitive and before
encrypt a file memorize it on contrary
you can loose it for ever. |
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Ribeiro Alvo