Converting hex string to bytes? 1

[piquazhang]

Hello! I am trying to test an encryption algorithm, and I am given a string of plain text in hexadecimal "14 00 00 24 ..."
and also a key in hexadecimal. The program I am using takes a key file and a plaintext file, and displays the cipher text on the screen.

Is there a simple UNIX command that takes a hexidecimal string and allows me to pipe the output to a file?

Thanks for your help!
Susan

 

[Annihilannic]

If you pipe your hex dump through this script it should do it:

[tt]perl -e 'while (<STDIN>) { split ; foreach (@_) { printf(&quot;%c&quot;,int) } }'[/tt]

Annihilannic.

 

[Annihilannic]

Oops. That converts decimal ASCII values to binary. This should do what you want:

[tt]perl -e 'while (<STDIN>) { split ; foreach (@_) { printf(&quot;%c&quot;,hex) } }'[/tt]

Annihilannic.