Implementation · VRAM-residency challenge · Draft
Technical detail
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- Hash. The test uses Argon2id in keyed mode, with a nonce-keyed BLAKE2b masking pass, at 1 pass, 1 lane and 1 MiB of working memory per instance 1.
- Answer. The outputs of the parallel instances are concatenated and reduced to one digest with a fast hash such as SHA-256 1.
- Timing. The wait before each challenge is drawn from Uniform(0, T_max). In the reported experiment, challenge times were drawn uniformly over 120 s 1.