What’s happening ‘inside’ encrypted Wifi networks?
Analyzing network connections with tools like Wireshark is usually straightforward if the traffic is accessible on a local interface. It’s...
security
Binary-level exploits — How to execute input data as machine code
Exploits can address any layer of an application. The most fundamental ones are those that target the binary level and...
Stack smashing prevention
Buffer overflows are common attack vectors that leverage missing checks of input data to overwrite program instructions. A rewarding program...
Cross-site scripting (XSS) demo
The following example demonstrates a cross-site scripting attack that manipulates a website to display the content of a stored cookie....
Step-by-step signature verification of X.509 certificates in Java
The Java code below demonstrates signature verification in a chain of X.509 certificates using cryptographic primitives (i.e. hash functions and ciphers)....
Encrypting web service demo in Java
The example below shows two simple crypto operations that are exposed via a web service interface. The approach is top-down,...