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This repository contains an implementation of the SPHINCS+ signature framework as described in

Test vectors for WOTS+, FORS, and SPHINCS+ can be found in their respective folders. The tests themselves can be found in the Go test files, while the expected signatures can then be found in the expected_signature folders. The test vectors cover the 24 named variants described in the specification that are instantiated using either SHA-256 or SHAKE256. The test that checks if the output matches the expected signature is called testSignFixed, and it is a subtest that is run for each of the named variants.