Hi, my dad is an ophtalmologist (as if that gives me any credibility) who refuses to perform or recommend Lasik, RK, or any of the other corrective eye surgeries. A couple of thoughts:
First, I think it's somewhat irresponsible of Slashdot to be hosting this discussion; we're nerds here, not docs.
Second, the risks are pretty high. Less than 40% of recipients are corrected to 20/20 vision, and even those who get full 20/20 visual acuity often have problems with ghost images, starburst, and halos. Just as megahertz is a poor way to judge machine speed, visual acuity fails to capture the important details of vision.
I'd hold off for a few more years. I wear contacts, and it kind of sucks, but you've only got the one pair of eyes.
2. Are there any import restrictions for strong crypto?
Not in the US. There are international versions of some packages (SSLeay/OpenSSL, pgp, ssh) that are somewhat faster or more featureful because of RSA patent restrictions, but that's a different issue. Some other countries restrict the import or even use of crypto; Russia and France were the paradigmatic examples, but the situation in France has been improving of late.
I believe the RSA patent expires the 20th of September, 2000. Less than a year away...
Hmm? I have no problems cutting and pasting between an xterm, gvim, netscape, or just about anything else. This sounds bizarre to me, but I don't have emacs installed to test with. Sometimes you need to use the right-menu paste option in Netscape and sometimes the center button.
Bruce Schneier's Applied Cryptography is the place to start. Mostly pre-calculus and some number theory, pretty straightforward stuff. Some abstract algebra is used on occasion. Sumner
The MAC address section of IPv6 is used mostly for locally addressable destinations. It makes an easier job for routers to figure out whether to route the packet.
It is stripped off (or obfuscated) by a router when sending packets out into the big bad internet.
What makes you think that? "Seperating Identifiers and Locators in Addresses: an Analysis of the GSE Proposal for IPv6" (draft-ietf-ipngwg-esd-analysis-04.txt) says:
"In contrast, connections in GSE are identified by the ESDs rather than full IPv6 addresses. That is, connections are identified uniquely by the tuple: (srcESD, dstESD, srcport, dstport). Consequently, when demultiplexing incoming packets to their proper end point, TCP would ignore the Routing Stuff portions of addresses."
etc. Basically, the RG portion of the IPv6 address can be stripped, but the ESD (which contains the MAC address) can't.
I'm not convinced it's a privacy concern -- witness the "Privacy Extensions for Stateless Address Autoconfiguration in IPv6" draft -- but it sure doesn't seem that the ESD can be stripped.
Slashdot Mirror
Hi, my dad is an ophtalmologist (as if that gives me any credibility) who refuses to perform or recommend Lasik, RK, or any of the other corrective eye surgeries. A couple of thoughts:
First, I think it's somewhat irresponsible of Slashdot to be hosting this discussion; we're nerds here, not docs.
Second, the risks are pretty high. Less than 40% of recipients are corrected to 20/20 vision, and even those who get full 20/20 visual acuity often have problems with ghost images, starburst, and halos. Just as megahertz is a poor way to judge machine speed, visual acuity fails to capture the important details of vision.
I'd hold off for a few more years. I wear contacts, and it kind of sucks, but you've only got the one pair of eyes.
Sumner
Schneier has mentioned in sci.crypt that he's less enamored by IDEA than he used to be.
2. Are there any import restrictions for strong crypto?
Not in the US. There are international versions of some packages (SSLeay/OpenSSL, pgp, ssh) that are somewhat faster or more featureful because of RSA patent restrictions, but that's a different issue. Some other countries restrict the import or even use of crypto; Russia and France were the paradigmatic examples, but the situation in France has been improving of late.
I believe the RSA patent expires the 20th of September, 2000. Less than a year away...
Sumner
Hmm? I have no problems cutting and pasting between an xterm, gvim, netscape, or just about anything else. This sounds bizarre to me, but I don't have emacs installed to test with. Sometimes you need to use the right-menu paste option in Netscape and sometimes the center button.
Sumner
Bruce Schneier's Applied Cryptography is the place to start. Mostly pre-calculus and some number theory, pretty straightforward stuff. Some abstract algebra is used on occasion. Sumner
The MAC address section of IPv6 is used mostly for locally addressable destinations. It makes an easier job for routers to figure out whether to route the packet.
It is stripped off (or obfuscated) by a router when sending packets out into the big bad internet.
What makes you think that? "Seperating Identifiers and Locators in Addresses: an Analysis of the GSE Proposal for IPv6" (draft-ietf-ipngwg-esd-analysis-04.txt) says:
"In contrast, connections in GSE are identified by the ESDs rather than full IPv6 addresses. That is, connections are identified uniquely by the tuple: (srcESD, dstESD, srcport, dstport). Consequently, when demultiplexing incoming packets to their proper end point, TCP would ignore the Routing Stuff portions of addresses."
etc. Basically, the RG portion of the IPv6 address can be stripped, but the ESD (which contains the MAC address) can't.
I'm not convinced it's a privacy concern -- witness the "Privacy Extensions for Stateless Address Autoconfiguration in IPv6" draft -- but it sure doesn't seem that the ESD can be stripped.
Sumner