unpublished cryptographic algorithms. The specification is secret
and confidential. It uses the SMS4 block cipher, which is secret and
patented. [*]
It's been declassified in January 2006.
The SMS4 cipher specification -
http://www.oscca.gov.cn/UpFile/200621016423197990.pdf
Ruptor
unpublished cryptographic algorithms. The specification is secret
and confidential. It uses the SMS4 block cipher, which is secret and
patented. [*]
On Mon, 12 Jun 2006, David Wagner wrote:
As far as I can tell, WAPI (the Chinese proposal) uses proprietary
unpublished cryptographic algorithms. The specification is secret and
confidential. It uses the SMS4 block cipher, which is secret and
patented. [*]
According to a legal friend who
The whole WAPI situation is much more complicated than the secrecy or
openness of the SMS4 algorithm. For the view from IEEE 802.11, see
http://grouper.ieee.org/groups/802/11/WAPI/wapi-documents.html.
Generally speaking, China seems to like 802.16 (WiMax), which is based
on the cell phone model
What kind of problems do people run into when they try to make
cryptographic algorithms that reduce to problems of known complexity?
I'm expecting that the literature is full of such attempts, and one
could probably spend a lifetime reading up on them, but I have other
plans and would appreciate
| What kind of problems do people run into when they try to make
| cryptographic algorithms that reduce to problems of known complexity?
| I'm expecting that the literature is full of such attempts, and one
| could probably spend a lifetime reading up on them, but I have other
| plans and would
