Computer Steganography cipher application Windows 95/98/ME/NT/ 4.X/2000/XP S-Tools v4.00 1996 Freeware - Not downward compatible For concealing cipher text within a digital data PICTURE file or in an Audio file (some Audio file .WAV files are in a Format that are not understood by S-Tools) To Install: 1. Install S-Tools4 Steganography: http://www.cspltd.ndirect.co.uk/windows/encrypt.htm (S-Tools v4.00) http://popularshareware.com/ See: Security & Encryption - Steganography 1.50 2. Agree to a PASSPHRASE (case-sensitive) and to an Encryption Algorithm (IDEA is a 128 Bit). Send the 29 character PASSPHRASE by U.S. Mail not by Email. Selecting to Compress files adds to security. Note: PASSPHRASE: with a MD5: scrambles the PASSPHRASE, generating the IDEA cryptography key. For Max security use: a PASSPHRASE of 29 random, nonsense combination of characters. And a picture not previously distributed. (The IDEA Algorithm was an AES cipher candidate). To Conceal (encrypt) cipher Text in a Picture: 1. Open S-Tools program 2. Click File, Click Properties, Select Enable Compression, Click OK 3. Open Note Pad 4. Write your message in Note Pad 5. Save Note Pad data as ie.: HIDDEN.TXT 6. Save Note Pad data to Desktop 7. Close Note Pad 8. Drag a PICTURE.BMP or .GIF file from Desktop, DROP onto S-Tools 9. Drag Note Pad's HIDDEN.TXT file, DROP onto PICTURE.BMP or .GIF in S-Tools 10. In the Security Dialog Box: Type PASSPHRASE & Verify PASSPHRASE; agreed to between Sender & Email Receiver Select algorithm ie.:IDEA Click OK - Click OK 11. Right Click on HIDDEN Data PICTURE 12. Save as: ie. Type: PICTURE.BMP or PICTURE.GIF Note: You must type the file name with extension .BMP or GIF 13. Email PICTURE (with hidden text message) as an Email Attachment. To REVEAL (decrypt) Text in a PICTURE: 1. Open S-Tools 2. Save Email Attachment (PICTURE) to Desktop 3. Drag Attachment onto S-Tools 4. Right Click on PICTURE 5. Click REVEAL 6. Type in an agreed to PASSPHRASE & Verify PASSPHRASE & select algorithm 7. Click OK 8. Revealed Archive box - Right Click on TXT File 9. Click on SAVE AS 10. Type .TXT Note: You must type .txt file extension to file name 11. Click Save - (Save in Desktop) 12. Click on Saved Desktop TEXT File to read Revealed Message To Process .WAV files for S-Tools: 1. Select WINAMP v2.80 2. Select OPTIONS MENU 3. Select PLAY 4. Select File.wav to convert 5. Click OPEN A WIN File formatted as PCM 8000Hz, 8bps is installed on Desktop Steganography Info: www.cryptobola.com/index.htm www.stegoarchive.com/ www.rugeley.demon.co.uk/security/encrypt.htm www.geocities.com/Paris/9955/stego.htm http://dir.yahoo.com/Computers_and_Internet/Security_and_Encryption/ http://niels.xtdnet/stego/ IDEA Key is secure against a Brute-Force computer attack @ 1 Billion a Sec, till the Sun Nova time. Pixel image elements per pixel: 8 - 16 - 24 bits Resolution 1600 x 1200 1.92 Med Bit Image Joe Mettle sends: 2004