Is ccrypt AES 256 bit crypto secure enough? Post: 302887067

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Special Forums Cybersecurity Is ccrypt AES 256 bit crypto secure enough? Post 302887067 by Perderabo on Wednesday 5th of February 2014 12:43:27 PM

02-05-2014

Administrator Emeritus

I have never heard of ccrypt and your link does not convince me that AES-256 is in use. I mostly use gpg for AES-256 bit encryption. Like this:

Code:

gpg -c --cipher-algo aes256 secret.txt

and to decrypt the file:

Code:

gpg secret.txt.gpg

Your link talks about using Rijndael, not AES. Read the AES page on wikipedia. Only 3 members of the Rijndael family are used in AES and all of them have a block size 128 bits. Your link says ccrypt is using a blocksize of 256 bits. I wonder if you have block size and key size confused? ccrypt may be good enough for your purposes, but based on your llink I will stay with gpg.

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gpg-error

gpg-error(1)							   User Commands						      gpg-error(1)

NAME

       gpg-error - Get the description for specified error numbers.

SYNOPSIS

       gpg-error errorno [...]

DESCRIPTION

       gpg-error is a tool that returns the description of specified error numbers.

OPERANDS

       The following operands are supported:

       errorno	Error numbers for which you want to get the description.

EXIT STATUS

       The following exit values are returned:

       0	Application exited successfully

       1	Application exited with failure

FILES

       The following files are used by this application:

       /usr/bin/gpg-error      Executable for gpg-error

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgpg-error		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gpg-error-config(1), libgpg-error(3), attributes(5)

       Written by Jeff Cai, Sun Microsystems Inc., 2008.

SunOS 5.11							    31 Jul 2008 						      gpg-error(1)