From 69a00984472c59d94df49c92279e44b115db284d Mon Sep 17 00:00:00 2001 From: Zesc Date: Fri, 27 Sep 2024 00:06:12 +0200 Subject: [PATCH] fix internal hyperlink --- opsec/steghide/index.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/opsec/steghide/index.html b/opsec/steghide/index.html index 2db9762..3441628 100644 --- a/opsec/steghide/index.html +++ b/opsec/steghide/index.html @@ -127,7 +127,7 @@ d56d71ecadf2137be09d8b1d35c6c042 output.pdf

Changing the encryption

-

As you've seen, steghide needs a passphrase to embed and extract data. (Note: using an empty passphrase can lead to issues extracting.) This passphrase is used to both encrypt your file before embedding and to seed the PRNG by which it selects pixel positions for embedding data. By default, it uses AES-128. You should not rely on steghide for securing your data cryptographically (see the introduction to steganography), and when in doubt you can separately encrypt the file before embedding, but you may still want to change the used algorithm. For this, simply use -e algorithm mode. You can list all available modes with steghide encinfo. So as example, to embed our previous picture using AES-256 in cipher feedback mode, you would use this:

+

As you've seen, steghide needs a passphrase to embed and extract data. (Note: using an empty passphrase can lead to issues extracting.) This passphrase is used to both encrypt your file before embedding and to seed the PRNG by which it selects pixel positions for embedding data. By default, it uses AES-128. You should not rely on steghide for securing your data cryptographically (see the introduction to steganography), and when in doubt you can separately encrypt the file before embedding, but you may still want to change the used algorithm. For this, simply use -e algorithm mode. You can list all available modes with steghide encinfo. So as example, to embed our previous picture using AES-256 in cipher feedback mode, you would use this:

$ steghide embed -cf apod20240824.jpg -ef bitcoin.pdf -e rijandael-256 cfb