TLS Triple Handshakes

2014-03-04 Thread Fedor Brunner
protect against this attack if the session caching is disabled? SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF) Is it necessary to disable resumption using a different function? Kind regards, Fedor Brunner -BEGIN PGP SIGNATURE

Re: Preference of 3DES over AES-128

2013-12-18 Thread Fedor Brunner
On 05.12.2013 20:15, Viktor Dukhovni wrote: > On Wed, Dec 04, 2013 at 01:29:09PM +0100, Fedor Brunner wrote: > >> The default cipher settings in OpenSSL prefer 3DES over AES-128. In >> general, Triple DES with three independent keys has a key length of 168 >> bits, bu

Preference of 3DES over AES-128

2013-12-04 Thread Fedor Brunner
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Hi all, the default cipher settings in OpenSSL prefer 3DES over AES-128. In general, Triple DES with three independent keys has a key length of 168 bits, but due to the meet-in-the-middle attack, the effective security it provides is only 112 bits

DH parameters distributed with OpenSSL

2013-11-07 Thread Fedor Brunner
Hello, there are two sets of DH parameters, is there a difference? ./crypto/dh/dh2048.pem ./crypto/dh/dh512.pem ./crypto/dh/dh192.pem ./crypto/dh/dh4096.pem ./crypto/dh/dh1024.pem ./apps/dh2048.pem ./apps/dh512.pem ./apps/dh4096.pem ./apps/dh1024.pem In DH parameters in ./apps there reference to

DH parameters distributed with OpenSSL

2013-11-07 Thread Fedor Brunner
Hello, there are two sets of DH parameters, that is the difference? ./crypto/dh/dh2048.pem ./crypto/dh/dh512.pem ./crypto/dh/dh192.pem ./crypto/dh/dh4096.pem ./crypto/dh/dh1024.pem ./apps/dh2048.pem ./apps/dh512.pem ./apps/dh4096.pem ./apps/dh1024.pem In DH parameters in ./apps there reference to