Date: Sun, 30 Jun 2019 18:01:23 +0200 From: Solar Designer <solar@...nwall.com> To: announce@...ts.openwall.com Subject: [openwall-announce] yespower 1.0.1 Hi, yespower is a proof-of-work (PoW) focused fork of yescrypt. While yescrypt is a password-based key derivation function (KDF) and password hashing scheme, and thus is meant for processing passwords, yespower is meant for processing trial inputs such as block headers (including nonces) in PoW-based blockchains. This is to announce a minor update of yespower released today as 1.0.1, and available on the project's homepage: https://www.openwall.com/yespower/ The changes are described in the included change log as follows: --- Changes made between 1.0.0 (2018/07/12) and 1.0.1 (2019/06/30). Fill the destination buffer with all set bits on error for fail-safety of the caller's "< target" check in case the caller neglects to check for errors. Simplified SMix2 for its final invocation with Nloop=2 in yespower 0.5. Revised the "XOR of yespower" tests to trigger duplicate index in the last SMix2 invocation in yespower 0.5 for N=2048 with at least one of the values of r being tested. This is needed to test that a proper kind of BlockMix is used in that special case, which would previously be left untested. Added x32 ABI support (x86-64 with 32-bit pointers). Added a bit more detail to the README on caching of the computed PoW hashes when integrating yespower in an altcoin based on Bitcoin Core. --- Alexander
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