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Would a HAIFA-construction based hash function like Argon2 resistant to length-extension attacks?

I say that Argon2 is HAIFA-based because BLAKE is, and Argon2 is based on BLAKE.

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  • $\begingroup$ I've unified the title and body on the answer's yes. $\endgroup$ – kelalaka Oct 15 '19 at 8:54
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Yes.

The HAIFA construct as introduced in A Framework for Iterative Hash Functions - HAIFA by Eli Biham and Orr Dunkelman is proposed with the explicit goal of eliminating various pitfalls of the classic Merkle-Damgaard construct.

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