Re: Encryption Solution

[Roscoe <eocsor () gmail com>]

On Thu, Jan 22, 2009 at 3:08 AM, Tom Ritter <tom () ritter vg> wrote:
> You may be able to get around this by using a stream cipher - I
> actually can't recall any literature I've seen on using stream ciphers
> to get around the error propagation issues with block ciphers now that
> I think about it... so if anyone knows anything about that, please
> reply to me or the list.

As stream cipher decryption is just a XOR of the ciphertext with the
generated keystream, a flipped bit in the ciphertext will result in a
single flipped bit in the plaintext.

You do have the option to use block ciphers in the same manner as
stream ciphers, eg: CTR mode.


I'd personally either use openssl or gpg, with as Oliver suggested par2.
(perfering gpg unless it showed an unacceptable performance hit over
using openssl)


-- Roscoe