# Steganography Software F5
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This package is meant to demonstrate a new steganographic algorithm. It
is a very preliminary version to embed files into true colour BMP, GIF,
or JPEG images. To have secure steganography choose a good passphrase.
It is also recommended to scan a new carrier image in true colour BMP format
for every new steganographic message. Delete the carrier BMP after you
created the lossy compressed steganogram.
The attacks presented on the third Workshop on Information Hiding are not
successful with F5.
http://wwwrn.inf.tu-dresden.de/~westfeld/attacks.html
## How to run
To run this software you need a Java runtime environment. There are two
shell scripts to demonstrate what you can do with this software:
e (stands for encrypt)
This is the embedding script merging the two files bandits.bmp and
bin.noise to one single file bandits.jpg. This JPEG image is the data
to delivered. The receiver of this file can extract the hidden message
using the second script
d (stands for decrypt)
which extracts a file output.txt from bandits.jpg. Output.txt and
bin.noise are equal.
To run this software from a DOS prompt you have e.bat and d.bat. To run
it with Microsoft's c:\windows\jview.exe you have ms_e.bat and ms_d.bat.
I make no warranty about the usability of this code. It is for
educational purposes and should be regarded as such.
Best regards,
Andreas Westfeld
westfeld@inf.tu-dresden.de
http://www.inf.tu-dresden.de/~aw4
Branch Notes
HuffmanDecode.java
Fixed an issues with it hanging if given a progressive JPEG. This is what
was causing that "Nf weder 1 noch 3" error. Now just throws IOException.
JpegEncoder.java and Embed,java
Changed the default comment to throw off suspicion. Now lies and claims to
be the product of a popular PHP jpeg lib.
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F5-steganography图片隐写工具,带使用方法,内含CTF群及所有工具包
共41个文件
class:13个
java:9个
txt:7个
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2022-11-29
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F5-steganography-master带使用方法(含CTF所有工具).zip (41个子文件)
F5-steganography-master带使用方法(含CTF所有工具)
F5-steganography-master使用方法(含CTF所有工具).docx 565KB
F5-steganography-master
1.jpg 17KB
license.txt 316B
image
Bmp.class 3KB
Bmp.java 2KB
james
Huffman.class 7KB
license.txt 1KB
IJGreadme.txt 19KB
version.txt 373B
JpegEncoder.class 10KB
JpegEncoder.java 58KB
Jpeg.java 5KB
JpegInfo.class 4KB
DCT.class 5KB
readme.md 2KB
Embed.java 5KB
gpl.txt 18KB
lopez.bmp 184KB
Embed.class 5KB
crypt
F5Random.java 666B
F5Random.class 665B
Permutation.java 913B
Permutation.class 516B
d.bat 62B
output.txt 33B
Extract.java 6KB
ms_d.bat 63B
d 94B
ortega
HuffTable.java 5KB
HuffmanDecode.class 11KB
HuffmanDecode.java 20KB
HuffTable.class 2KB
bin.noise 213B
java
security
SecureRandomSpi.class 341B
Extract.class 4KB
Makefile 373B
ms_e.bat 104B
sun
security
provider
SecureRandom.class 2KB
usehelp.txt 33B
e.bat 103B
e 109B
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