Network and Computer Security, Lecture 5 - MIT … · 6.857 Computer and Network Security Lecture 5 Admin: Problem Set #1 due in Lecture 6 Problem Set #2 out Lecture 6 Next lecture

6857 Computer and Network Security Lecture 5

Admin Problem Set 1 due in Lecture 6 Problem Set 2 out Lecture 6 Next lecture by TA (secret sharing and bitcoin) Submit passwords (not real ones) for problem set 2

Project Ideas ldquoFormat-Transforming Encryptionrdquo Shrimpton 2014 Real-World Crypto talk Also see httpsfteproxyorg

Today Crypto hash functions applications and constructions Applications

o Signatures o Commitments o Merkle trees o Payword o Hash-cash

Construction o Merkle-Damgard o Sponge function

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