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May
13
awarded  Yearling
Apr
25
comment Why clients offer handshaking with SSL 2.0 protocol
Sun/Oracle/OpenJDK Java has had support for "SSLv2Hello" for a long time (without actual support for SSLv2), and it was used by default until Java 7.
Apr
25
revised Why different key exhange techniques for ssl key exchange?
deleted 6 characters in body
Apr
25
comment Why different key exhange techniques for ssl key exchange?
@armb yes, I meant DH parameters in the sense used in the specification (i.e. ServerDHParams). Indeed, not everything needs to change, just X and therefore dh_Ys.
Apr
3
comment What certificates are needed for multi-level subdomains?
What a CA says in its marketing material should be interpreted with caution. How names are verified doesn't depend on them, but on the client implementations and how they follow the specifications. When read closely, this sentence could mean that they'd issue a cert with a SAN for *.digicert.com and another SAN for server1.sub.mail.digicert.com, not necessarily that the cert will allow any subdomain at any level once issued.
Mar
19
comment Certificate Chains When Importing Signed CSR Response
Just a detail, shouldn't the chain be the other way around, from EEC to root, when it's sent? ("Each following certificate MUST directly certify the one preceding it.")
Mar
19
answered Could I delete .csr files when the key is signed by CA
Mar
19
answered Security of JVM for Server
Mar
15
comment What is ASN.1 usage in SSL protocl and What's the risk of using it?
@user20883, ASN.1 is used for encoding the certificate. It doesn't have much to do with the way the rest of the TLS connection works. The main issues with ASN.1 are about implementation bugs regarding the certificate verification (and host name verification). For the rest about SSL/TLS, you should read this question. In short, the usage of ASN.1 is part of the server authentication, which is essential for securing the connection. Using just encryption isn't enough. Btw, the pre master key is encrypted with RSA, not the session keys.
Mar
15
comment Key authentication with ssl
@SmitJohnth, you can indeed use self-signed client certs (although I'd still verify the server cert the traditional PKI way), but this may require a bit of tweaking, since most frameworks expect a PKI model. In most cases, you may have to implement your own trust evaluation with the SSL/TLS stack, or disable it and do it within your application. Make sure your customisations eventually perform some form of verification (e.g. against a fixed list of public keys) before considering the client to be authenticated, from the application's point of view.
Mar
13
awarded  certificates
Dec
20
awarded  Nice Answer
Dec
11
comment How do I prevent this type of SQL injection attack?
@Jeff, the issue isn't really related to the encoding, rather it has to do with the fact the (decoded) parameter contains a quote, and isn't escaped.
Dec
11
revised openssl, create RC4-SHA certificate
added 135 characters in body
Dec
11
answered openssl, create RC4-SHA certificate
Nov
28
comment Safe to make a VPN connection over coffee shop WIFI?
It seems to some default configuration of some PPTP implementations have encryption as optional by default. As usual, good configuration is key.
Nov
28
comment Safe to make a VPN connection over coffee shop WIFI?
@AJHenderson, I think part of the problem in this article comes from the confusion between HTTPS and SSL. Not all SSL-based VPNs use HTTPS (i.e. are meant to be used from the browser), for example OpenVPN. If this particular VPN technology relies on pointing a browser to an HTTPS page, the usual protection mechanisms apply: more specifically, the user need to check they're indeed using HTTPS (or HTST can be used, when possible).
Nov
28
answered Safe to make a VPN connection over coffee shop WIFI?
Nov
28
comment How secure is aSSL (javascript)? Does it effectively mimic SSL?
Well, it could be OK to protect against eavesdropping perhaps, but it will be useless as far as protecting against MITM is concerned, however much work you put into it.
Nov
27
answered Client Certificate in SSL HandShake insecure?