DSE-CLI (command-line interface)
Copyright (c)2004 Dariusz Stanislawek
freezip(at)bigfoot,com
DSE is a file encryption program.
FEATURES
- extensively tested and widely accepted AES cipher
- disclosed implementation and source code
- excellent performance and no target file size limits
- secure use of system resources
- really small executable file
- self-contained and dependency-free
- installation-and-pollution-free
- freeware status and unrestricted distribution
USAGE
dse keyfile e|d source destination
Keyfile size is 32 bytes.
Encryption example: dse a:\my.key e d:\x\data.zip data.enc
Decryption example: dse my.key d data.enc c:\tmp\data.zip
To create a random-content key file type: dse keyfile
To create a key file from a password (max 32 char.) type: dse keyfile p
NOTES
Use double-quotes for file names with spaces.
DSE does not overwrite or delete existing files.
DSE does not verify precessed data. Encryption and decryption will always
succeed. Make sure to use a proper key and correct mode of operation.
Do not lose your random-content key file, save a backup copy of it on a
removable media.
Press Ctrl+C to abort processing, then manually delete leftover files.
The best performance is achieved when source and destination files are on
physically separate drives.
Beware of keyloggers if you create a key file from a password.
Do not forget to securely delete sensitive files.
MULTI-FILE PROCESSING
Create the following file and folder structure:
dse.exe
my.key
TMP\ (folder for processed files)
|
|-file-for-encryption
|-file-for-encryption
|-...
|-TMP\ (sub-folder for encrypted files)
then type on the command-line:
for %f in (tmp\*.*) do dse my.key e "%f" "tmp\%f"
IMPLEMENTATION
Cipher: AES (Rijndael)
Mode: CFB-128
Key: 256 bits
IV: 16 bytes
Max File Size: unlimited
Cipher File Structure: [IV = 16 random bytes] + [cipherdata]
Source code and a fully compatible Windows-GUI version are available from:
http://www.ozemail.com.au/~nulifetv/freezip/freeware/
http://freezip.cjb.net/freeware/
FREEWARE SOFTWARE
Free for private or business use. Free for distribution and publication,
but in unmodified package. It can be freely bundled with any product or
application. Individual permissions are not required and will not be given.
DISCLAIMER
=========================================================================
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=========================================================================
