Mike Pound
Computer scientist and Computerphile contributor specializing in cryptography and hashing; provides expert explanations on hash functions, collisions, rainbow tables, salting, and related cryptographic topics.
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Feb 2, 2026 • 51min
#535: Encryption vs Hashing: What's the real difference?
Dr. Mike Pound, computer scientist and Computerphile contributor who specializes in cryptography, explains why hashing is one-way while encryption is reversible. He covers hash properties like the avalanche effect and collisions. He also discusses rainbow tables, salting, SHA-2 vs SHA-3, length-extension attacks, and how hashing fits into signatures and integrity checks.
