Summary: 16 instances, 16 unique

Text	Count
// identity (a * 2²⁵⁵ + b = a * 19 + b) to the l4 carry. TODO inline	1
// TODO: RFC4880 5.2.1 permits signatures	1
// TODO: Consider making it configurable or an exp backoff?	1
// TODO: delete once the compiler does a reliably	1
// TODO: Consider moving this to x/crypto/acme/internal/acmetest for acme tests as well.	1
// TODO: SHAKE support	1
// TODO: maybe rewrite this whole piece using sync.Once	1
// TODO: we have two of these in OpenPGP packages alone. This probably needs	1
// TODO: warn about skipped unsupported/unreadable keys	1
// TODO: RFC 4880 5.2.3.15 defines revocation keys.	1
// TODO: Check the user account key against a ca.accountKeys?	1
// TODO: support selecting ECDSA.	1
// TODO: rotate dr.key at some point?	1
// TODO: cache error results?	1
// TODO: check the token.	1
// TODO: Verify nonce header for all POST requests.	1