Collision-Resistance — CISSP Practice Questions
Collision resistance is a required property of a cryptographically secure hash function, meaning it must be computationally infeasible to find any two distinct inputs that produce the same digest output. The CISSP exam connects collision resistance to the security of digital signatures, certificate fingerprinting, and software integrity verification, since a collision could allow a malicious payload to carry a trusted hash. Candidates should understand that collision resistance is a stronger property than pre-image resistance, and that discovering practical collisions in an algorithm (as happened with MD5 and SHA-1) forces migration to stronger alternatives. Algorithm deprecation decisions in enterprise environments are a direct downstream consequence of collision resistance failures.