Re: file encryption and integrity check

2006-03-11 Thread Simon H. Garlick
On 2/22/06, Vladimir Doisan <[EMAIL PROTECTED]> wrote: > 512 MB backup file > GnuPG-64 | GnuPG-32 > --- > twofish (256)33.5s (15.3 mbps) | 32.2s (15.9 mbps) > aes (12

Re: file encryption and integrity check

2006-03-10 Thread Vladimir Doisan
Yes, I did exactly the same for my encrypted backups, only I chose Twofish due to speed advantage (TW256 - 16.2 mbps vs. AES256 - 12.6 mbps). With compression enabled - encryption speed was within 0.5 mbps across all ciphers at around 12 mbps. I did switch over to public key encryption last month.

Re: file encryption and integrity check

2006-03-10 Thread Vladimir Doisan
Yes, I did exactly the same for my encrypted backups, only I chose Twofish due to speed advantage (TW256 - 16.2 mbps vs. AES256 - 12.6 mbps). With compression enabled - encryption speed was within 0.5 mbps across all ciphers at around 12 mbps. I did switch over to public key encryption last month.

Re: file encryption and integrity check

2006-02-26 Thread Johan Wevers
David Shaw wrote: >This is correct. Of course, it's possible that GnuPG doesn't >recognize a particular kind of compression. If I recall, it looks for >bzip, gzip, and zip. A simple default test would be of course to check if the used compression algorithm could decrease the file size: this wou

Re: file encryption and integrity check

2006-02-22 Thread David Shaw
On Wed, Feb 22, 2006 at 05:49:40PM +1030, Alphax wrote: > Francesco Turco wrote: > > > i have disabled compression becouse files i have to encrypt are already > > compressed, and compression takes much more time then encryption. > > > > do you think it is a good choice? > > > > IIRC GnuPG will

Re: file encryption and integrity check

2006-02-21 Thread Alphax
Francesco Turco wrote: > i have disabled compression becouse files i have to encrypt are already > compressed, and compression takes much more time then encryption. > > do you think it is a good choice? > IIRC GnuPG will detect if data is compressed before it tries to compress it; if so, it won

Re: file encryption and integrity check

2006-02-21 Thread Francesco Turco
Roscoe ha scritto: Sure will. gpg -c is what you want. Make sure you are using a MDC, which means either using one of the 128bit blocksize ciphers (your gpg will probably use AES256 by default, which is good - gpg -vc to find out) or passing the --force-mdc option. so no need to hash files

Re: file encryption and integrity check

2006-02-20 Thread Eric
On Mon, 2006-02-20 at 17:46 +0100, Francesco Turco wrote: > i'd like to know if gnupg is a good choice for encrypting files with a > password and if it is possible to check if an encrypted file is > corrupted or not (integrity check). my goal is to burn some files on cds > and protect them both

Re: file encryption and integrity check

2006-02-20 Thread David Shaw
On Mon, Feb 20, 2006 at 05:46:29PM +0100, Francesco Turco wrote: > hello, > > i am very new with gnupg and cryptography in general. > > i'd like to know if gnupg is a good choice for encrypting files with a > password and if it is possible to check if an encrypted file is > corrupted or not (in

Re: file encryption and integrity check

2006-02-20 Thread Roscoe
Sure will. gpg -c is what you want. Make sure you are using a MDC, which means either using one of the 128bit blocksize ciphers (your gpg will probably use AES256 by default, which is good - gpg -vc to find out) or passing the --force-mdc option. If you want protection in the way of recovering

file encryption and integrity check

2006-02-20 Thread Francesco Turco
hello, i am very new with gnupg and cryptography in general. i'd like to know if gnupg is a good choice for encrypting files with a password and if it is possible to check if an encrypted file is corrupted or not (integrity check). my goal is to burn some files on cds and protect them both fr