
Arranging your SSL websites for very cautious people
Suppose that you have a very valuable SSL certificate (for example,you are a bank) and a rather complex application (for example, you aredoing online banking). You want to limit the damage of a compromiseas much as possible and especially you do not want to have the highvalue SSL certificate compromised, because that would be a gold mine forsophisticated attackers.
Here is one approach to this problem that has recently struck me:
- your application runs on your pool of servers as usual, but each of
賈樟柯和杜海濱(有更動)
賈樟柯和杜海濱的座談昨天爆滿(這種時候我竟然沒帶相機!)。希望今天的首場放映也能告捷。兩部都是優美沉穩、寵辱不驚的片子。
(去年看《無用》時,片子播到一半,同伴忍不住轉過頭來跟我說,怎麼可以這麼好看呢。
(去年看《無用》時,片子播到一半,同伴忍不住轉過頭來跟我說,怎麼可以這麼好看呢。
Another consequence of the Debian OpenSSL security bug
Here is another consequence of the Debian OpenSSL security bug that I did not hearabout (or realize) until recently: it lets an attacker steal any ofyour SSL certificates that were created with the broken (weak) OpenSSLversions. This includes signed certificates, with all that thatentails .
How the attacker does it is simple. They get your actual certificatesimply by connecting to your SSL-protected service (such as yourwebsite); the SSL protocol exchange necessarily sends them a copy ofyour certificate, complete with
今晚狂掃金!
黃金突跌(現價$875)因為美元overnight LIBOR升至10%,其效果和加息一樣,令美匯高開,金價大跌。
這是千載難逢的入金契機,因為若Bailout plan work out, LIBOR會回落,到時黃金就會升。
假如bailout plan doesn't work out at all, 黃金會發揮它的"資金天
這是千載難逢的入金契機,因為若Bailout plan work out, LIBOR會回落,到時黃金就會升。
假如bailout plan doesn't work out at all, 黃金會發揮它的"資金天
Using Python to find out what cipher a SSL server is using
I have a new-found interest in finding outwhat ciphers various SSL servers around here are using in some easy andconvenient way. Doing this in Perl is easy (there's an example here ), but I prefer Python.I'd normally use pyOpenSSL , my favorite Python OpenSSL module , butunfortunately it doesn't (currently) have an interface to thenecessary 'get the connection's cipher' OpenSSL routine, andthere's no visible substitute for it.
(While the .get
The consequences of your SSL certificate getting compromised
Suppose that your web server's SSL certificate's private key iscompromised and stolen by an attacker. Further suppose that you detectthis and replace the compromised certificate with a new one. Now, here'sa question: what damage can the attacker still do with their stolencertificate?
- they can impersonate your web server. In theory they can only do thisuntil their stolen certificate expires; in practice, I think that manyusers ignore 'expired certificate' errors because they are relativelycommon.
(SSL certificate
「 政 治 失 敗 」 之 後 轉 而 歸 咎 「 市 場 失 敗 」