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Static-Memory-Hard Functions and Nonlinear Space-Time Tradeoffs via Pebbling
memory-hard functions pebbling space-time trade-offs
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2018/3/5
Pebble games were originally formulated to study time-space tradeoffs in computation, modeled by games played on directed acyclic graphs (DAGs). Close connections between pebbling and cryptography hav...
On the Depth-Robustness and Cumulative Pebbling Cost of Argon2i
Argon2i Memory Hard Functions Depth-Robustness
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2017/5/25
Argon2i is a data-independent memory hard function that won the password hashing competition. The password hashing algorithm has already been incorporated into several open source crypto libraries suc...
Explicit Optimal Binary Pebbling for One-Way Hash Chain Reversal
hash chains pebbling in-place algorithms
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2016/1/23
We present explicit optimal binary pebbling algorithms for reversing one-way hash chains. For a hash chain of length 2k , the number of hashes performed in each output round does not exceed dk/2e, ...