The key points from this module are:
Some applications of Cryptographic Hash Functions include:
Message Authentication Codes
The Merkle-Damgard Paradigm is a two-stage approach for designing collision-resistant hash functions.
Stage 1: Design a fixed-length collision-resistant compression function.
Stage 2: Design a collision-resistant hash function for arbitrary length messages.
Two approaches for the construction of fixed-length collision-resistant compression functions are:
Construction based on number-theoretic assumptions
Construction based on block ciphers
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