Commits on Sep 18, 2024

1. Update BBS to match new draft specs …

   Both
   https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-bbs-signatures-06
   and
   https://datatracker.ietf.org/doc/html/draft-kalos-bbs-blind-signatures-01
   have been recently released.  They mostly change the hashing ordering of
   things. Though, the blind spec also now includes a fully fledged
   `BlindProofVerify` and dropped `get_disclosed_data`, and blinded
   messages are hashed using a new sequence of generators.
   
   While updating the test fixtures I've ensured that they're all being
   used, some were not included. There were a couple that were
   `#[ignore]`'d, but actually worked just fine, so I've enabled them.
   The tests using the fixtures were all very formulaic, so I've tried to
   condense them using macros.

   

   jeddenlea committed Sep 18, 2024
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2. Avoid Vec allocation for i2osp …

   In the vast majority of cases, we essentially want i2osp to act like
   `to_be_bytes`. But, it does help to actually express things in a manner
   consistent with the specs.  So, this makes i2osp a function with a const
   generic parameter to control the size of the returned array.  It remains
   as flexible as it was, but in the vast majority of cases where a usize
   is turned into an 8-byte array, this compiles down to just a byte swap.

   

   jeddenlea committed Sep 18, 2024
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