CSE 127: Lecture 6

The topics covered in this lecture are slammer and Differential Timing Analysis,

The Slammer Worm

Port 1434 buffer overflow vulnerability.

Differential Timing Analysis

We started on analyzing the modular exponentiation algorithm:

Integer modexp(Integer x, Bit e[], int k, Integer n)
{
	Integer y = 1, z = x;
	int	i;

	//                k-1       i
	// exponent e = sum   e[i] 2
	//                i=0
	for (i = 0; i < k; i++) {
		if (1 == e[i]) {
			y = y * z mod n;
		}
		z = z * z mod n;
	}
	return y;
}

Links

These are links additional security-related information. Exploring them is optional unless otherwise stated.

bsy+cse127.w03@cs.ucsd.edu, last updated Wed Jan 29 21:15:34 PST 2003. Copyright 2003 Bennet Yee.
email bsy.