Cryptographic hash function: Difference between revisions

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The last block processed should also be unambiguously [[Padding (cryptography)|length padded]]; this is crucial to the security of this construction. This construction is called the [[Merkle–Damgård construction]]. Most common classical hash functions, including [[SHA-1]] and [[MD5]], take this form.
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=== Wide pipe versus narrow pipe <span class="anchor" id="wide pipe"></span><span class="anchor" id="narrow pipe"></span> ===