[dignifiedquire]

This was allowed in the rust-rsa crate directly before, which is why it was introduced in that commit.

[woodruffw]

Yep, I saw the upstream[1].

However, I misread this: I thought the padding was being done on the cleartext signing side, but this is padding of the signature itself. So there's some malleability here, but it isn't susceptible to DO'1985. I'll update my top-level comment.

[1]: https://github.com/RustCrypto/RSA/issues/272

[junon]

Glad people care to look, that's what matters.

[dignifiedquire]

Thanks, appreciate the careful check!