Jakob Bohm jb-openssl-Ov0D3Su7/I/qt0dzr+a...@public.gmane.org writes:
[...]
As explained above, 192 bit DSA and ECDSA only works with 192 bit
hashes (and only one hash algorithm is allowed for each private/public
key pair).
You can use larger digests (SHA-512, for example), but the digest
On 10/18/2011 2:18 PM, Bruce Stephens wrote:
Jakob Bohmjb-openssl-Ov0D3Su7/I/qt0dzr+a...@public.gmane.org writes:
[...]
As explained above, 192 bit DSA and ECDSA only works with 192 bit
hashes (and only one hash algorithm is allowed for each private/public
key pair).
You can use larger
Jakob Bohm jb-openssl-Ov0D3Su7/I/qt0dzr+a...@public.gmane.org writes:
[...]
I did mention that in passing under my item 2 (where I mentioned use
of 192-bit-truncated-SHA-224 as one allowed 192 bit hash algorithm for
use with ECDSA-192).
OK, sorry, I missed that.
I don't remember if the
On 10/13/2011 7:17 PM, Dirk Menstermann wrote:
Hello Jakob,
On 12.10.2011 22:21, Jakob Bohm wrote:
I know that to sign, i have to take a hash of some document or message but,
theoretically, i could encrypt any document? The padding scheme would shrink
the message and them could reveal the
Thanks,
On 14.10.2011 13:16, Jakob Bohm wrote:
Unfortunately not, I am a security engineer, not a fully trained
cryptographer/cryptanalyst.
As an engineer I am aware that attacking an algorithm such as RSA is easier
the
more the
attacker knows or can control about the input, and that
Hello Jakob,
On 12.10.2011 22:21, Jakob Bohm wrote:
I know that to sign, i have to take a hash of some document or message but,
theoretically, i could encrypt any document? The padding scheme would shrink
the message and them could reveal the same message after deciphering?
The padding
On 10/8/2011 3:39 PM, Rick Lopes de Souza wrote:
Hi all,
This week i was in doubt to implemment some methods to sign using
OpenSSL. I know that RSA needs the hash algorithm to do the padding
scheme and ECDSA doesn't need.
ECDSA (and regular DSA) on the other hand needs a hash scheme
Hi all,
This week i was in doubt to implemment some methods to sign using OpenSSL. I
know that RSA needs the hash algorithm to do the padding scheme and ECDSA
doesn't need.
Another thing that i know is that RSA can only sign things that are smaller
than the size of the key used. I can imagine
On Sat, Oct 8, 2011 at 6:39 AM, Rick Lopes de Souza
dragonde...@gmail.com wrote:
Another thing that i know is that RSA can only sign things that are smaller
than the size of the key used.
No - you can sign a message of arbitrary length - a suitable message
digest is what is encrypted (well,
