Summary for Week 7

• Lecture 8: We discussed a digital signature scheme based on RSA. We also discussing hash functions and its properties, such as one-way and collision resistance. We discussed the Merkle-Damagrad construction for iterated hash functions, and covered the specific hash function MD-5.
  Date: Tu, 10/12/2010.
• Lecture 9: We discussed keyed hash functions or MACs. We described a specific MAC construction called HMAC, which takes a hash function (such as MD5) and allows us to use as a MAC.
  Date: Th, 10/14/2010.